SPC Jun 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

2 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 PM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TEXAS TO SOUTHERN WISCONSIN... ...SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ...Texas to the Great Lakes... A southern stream upper shortwave trough over the southern/central High Plains will merge with the northern stream shortwave trough over the northern Plains on Tuesday as both features develop eastward toward the MS Valley. As this occurs, southwesterly flow aloft will increase from the Mid-MS Valley to the Great Lakes, with weaker west/southwesterly deep-layer flow extending southwestward into the southern Plains. At the surface, a cold front extending from northwest WI into central KS will develop east/southeast through the period, becoming positioned from northern lower MI to central TX by Wednesday morning. A 40-50 kt southwesterly low-level jet from the southern Plains into the Great Lakes region will maintain a plume of rich boundary layer moisture from OK/TX into WI ahead of the surface front. However, cloud cover may limit stronger heating with northward extent from the Mid-MS Valley into WI. As a result, stronger instability will likely remain confined from southwest MO into parts of OK/TX. Additionally, warm 500 mb temperatures will result in poor lapse rates. Nevertheless, sufficient MLCAPE and effective shear magnitudes around 25-35 kt will support isolated to widely scattered severe storm potential from northeast MO into WI. Further south from central/eastern KS/OK into southwest MO and southward into parts of TX, stronger instability will be present, but vertical shear will be more modest. As a result, storm mode may be somewhat messy with initial cells becoming clusters quickly. As the surface cold front develops southeast through the late afternoon and evening, some linear segments could also develop. Damaging gusts and hail appear to be the most probable storm hazards at this time. ..Leitman.. 06/01/2025 Read more

SPC Jun 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

2 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 PM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TEXAS TO SOUTHERN WISCONSIN... ...SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ...Texas to the Great Lakes... A southern stream upper shortwave trough over the southern/central High Plains will merge with the northern stream shortwave trough over the northern Plains on Tuesday as both features develop eastward toward the MS Valley. As this occurs, southwesterly flow aloft will increase from the Mid-MS Valley to the Great Lakes, with weaker west/southwesterly deep-layer flow extending southwestward into the southern Plains. At the surface, a cold front extending from northwest WI into central KS will develop east/southeast through the period, becoming positioned from northern lower MI to central TX by Wednesday morning. A 40-50 kt southwesterly low-level jet from the southern Plains into the Great Lakes region will maintain a plume of rich boundary layer moisture from OK/TX into WI ahead of the surface front. However, cloud cover may limit stronger heating with northward extent from the Mid-MS Valley into WI. As a result, stronger instability will likely remain confined from southwest MO into parts of OK/TX. Additionally, warm 500 mb temperatures will result in poor lapse rates. Nevertheless, sufficient MLCAPE and effective shear magnitudes around 25-35 kt will support isolated to widely scattered severe storm potential from northeast MO into WI. Further south from central/eastern KS/OK into southwest MO and southward into parts of TX, stronger instability will be present, but vertical shear will be more modest. As a result, storm mode may be somewhat messy with initial cells becoming clusters quickly. As the surface cold front develops southeast through the late afternoon and evening, some linear segments could also develop. Damaging gusts and hail appear to be the most probable storm hazards at this time. ..Leitman.. 06/01/2025 Read more

SPC Jun 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

2 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 PM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TEXAS TO SOUTHERN WISCONSIN... ...SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ...Texas to the Great Lakes... A southern stream upper shortwave trough over the southern/central High Plains will merge with the northern stream shortwave trough over the northern Plains on Tuesday as both features develop eastward toward the MS Valley. As this occurs, southwesterly flow aloft will increase from the Mid-MS Valley to the Great Lakes, with weaker west/southwesterly deep-layer flow extending southwestward into the southern Plains. At the surface, a cold front extending from northwest WI into central KS will develop east/southeast through the period, becoming positioned from northern lower MI to central TX by Wednesday morning. A 40-50 kt southwesterly low-level jet from the southern Plains into the Great Lakes region will maintain a plume of rich boundary layer moisture from OK/TX into WI ahead of the surface front. However, cloud cover may limit stronger heating with northward extent from the Mid-MS Valley into WI. As a result, stronger instability will likely remain confined from southwest MO into parts of OK/TX. Additionally, warm 500 mb temperatures will result in poor lapse rates. Nevertheless, sufficient MLCAPE and effective shear magnitudes around 25-35 kt will support isolated to widely scattered severe storm potential from northeast MO into WI. Further south from central/eastern KS/OK into southwest MO and southward into parts of TX, stronger instability will be present, but vertical shear will be more modest. As a result, storm mode may be somewhat messy with initial cells becoming clusters quickly. As the surface cold front develops southeast through the late afternoon and evening, some linear segments could also develop. Damaging gusts and hail appear to be the most probable storm hazards at this time. ..Leitman.. 06/01/2025 Read more

SPC Jun 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

2 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 PM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TEXAS TO SOUTHERN WISCONSIN... ...SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ...Texas to the Great Lakes... A southern stream upper shortwave trough over the southern/central High Plains will merge with the northern stream shortwave trough over the northern Plains on Tuesday as both features develop eastward toward the MS Valley. As this occurs, southwesterly flow aloft will increase from the Mid-MS Valley to the Great Lakes, with weaker west/southwesterly deep-layer flow extending southwestward into the southern Plains. At the surface, a cold front extending from northwest WI into central KS will develop east/southeast through the period, becoming positioned from northern lower MI to central TX by Wednesday morning. A 40-50 kt southwesterly low-level jet from the southern Plains into the Great Lakes region will maintain a plume of rich boundary layer moisture from OK/TX into WI ahead of the surface front. However, cloud cover may limit stronger heating with northward extent from the Mid-MS Valley into WI. As a result, stronger instability will likely remain confined from southwest MO into parts of OK/TX. Additionally, warm 500 mb temperatures will result in poor lapse rates. Nevertheless, sufficient MLCAPE and effective shear magnitudes around 25-35 kt will support isolated to widely scattered severe storm potential from northeast MO into WI. Further south from central/eastern KS/OK into southwest MO and southward into parts of TX, stronger instability will be present, but vertical shear will be more modest. As a result, storm mode may be somewhat messy with initial cells becoming clusters quickly. As the surface cold front develops southeast through the late afternoon and evening, some linear segments could also develop. Damaging gusts and hail appear to be the most probable storm hazards at this time. ..Leitman.. 06/01/2025 Read more

SPC Jun 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

2 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 PM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TEXAS TO SOUTHERN WISCONSIN... ...SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ...Texas to the Great Lakes... A southern stream upper shortwave trough over the southern/central High Plains will merge with the northern stream shortwave trough over the northern Plains on Tuesday as both features develop eastward toward the MS Valley. As this occurs, southwesterly flow aloft will increase from the Mid-MS Valley to the Great Lakes, with weaker west/southwesterly deep-layer flow extending southwestward into the southern Plains. At the surface, a cold front extending from northwest WI into central KS will develop east/southeast through the period, becoming positioned from northern lower MI to central TX by Wednesday morning. A 40-50 kt southwesterly low-level jet from the southern Plains into the Great Lakes region will maintain a plume of rich boundary layer moisture from OK/TX into WI ahead of the surface front. However, cloud cover may limit stronger heating with northward extent from the Mid-MS Valley into WI. As a result, stronger instability will likely remain confined from southwest MO into parts of OK/TX. Additionally, warm 500 mb temperatures will result in poor lapse rates. Nevertheless, sufficient MLCAPE and effective shear magnitudes around 25-35 kt will support isolated to widely scattered severe storm potential from northeast MO into WI. Further south from central/eastern KS/OK into southwest MO and southward into parts of TX, stronger instability will be present, but vertical shear will be more modest. As a result, storm mode may be somewhat messy with initial cells becoming clusters quickly. As the surface cold front develops southeast through the late afternoon and evening, some linear segments could also develop. Damaging gusts and hail appear to be the most probable storm hazards at this time. ..Leitman.. 06/01/2025 Read more

SPC Jun 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

2 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 PM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TEXAS TO SOUTHERN WISCONSIN... ...SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ...Texas to the Great Lakes... A southern stream upper shortwave trough over the southern/central High Plains will merge with the northern stream shortwave trough over the northern Plains on Tuesday as both features develop eastward toward the MS Valley. As this occurs, southwesterly flow aloft will increase from the Mid-MS Valley to the Great Lakes, with weaker west/southwesterly deep-layer flow extending southwestward into the southern Plains. At the surface, a cold front extending from northwest WI into central KS will develop east/southeast through the period, becoming positioned from northern lower MI to central TX by Wednesday morning. A 40-50 kt southwesterly low-level jet from the southern Plains into the Great Lakes region will maintain a plume of rich boundary layer moisture from OK/TX into WI ahead of the surface front. However, cloud cover may limit stronger heating with northward extent from the Mid-MS Valley into WI. As a result, stronger instability will likely remain confined from southwest MO into parts of OK/TX. Additionally, warm 500 mb temperatures will result in poor lapse rates. Nevertheless, sufficient MLCAPE and effective shear magnitudes around 25-35 kt will support isolated to widely scattered severe storm potential from northeast MO into WI. Further south from central/eastern KS/OK into southwest MO and southward into parts of TX, stronger instability will be present, but vertical shear will be more modest. As a result, storm mode may be somewhat messy with initial cells becoming clusters quickly. As the surface cold front develops southeast through the late afternoon and evening, some linear segments could also develop. Damaging gusts and hail appear to be the most probable storm hazards at this time. ..Leitman.. 06/01/2025 Read more

SPC Jun 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

2 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 PM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TEXAS TO SOUTHERN WISCONSIN... ...SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ...Texas to the Great Lakes... A southern stream upper shortwave trough over the southern/central High Plains will merge with the northern stream shortwave trough over the northern Plains on Tuesday as both features develop eastward toward the MS Valley. As this occurs, southwesterly flow aloft will increase from the Mid-MS Valley to the Great Lakes, with weaker west/southwesterly deep-layer flow extending southwestward into the southern Plains. At the surface, a cold front extending from northwest WI into central KS will develop east/southeast through the period, becoming positioned from northern lower MI to central TX by Wednesday morning. A 40-50 kt southwesterly low-level jet from the southern Plains into the Great Lakes region will maintain a plume of rich boundary layer moisture from OK/TX into WI ahead of the surface front. However, cloud cover may limit stronger heating with northward extent from the Mid-MS Valley into WI. As a result, stronger instability will likely remain confined from southwest MO into parts of OK/TX. Additionally, warm 500 mb temperatures will result in poor lapse rates. Nevertheless, sufficient MLCAPE and effective shear magnitudes around 25-35 kt will support isolated to widely scattered severe storm potential from northeast MO into WI. Further south from central/eastern KS/OK into southwest MO and southward into parts of TX, stronger instability will be present, but vertical shear will be more modest. As a result, storm mode may be somewhat messy with initial cells becoming clusters quickly. As the surface cold front develops southeast through the late afternoon and evening, some linear segments could also develop. Damaging gusts and hail appear to be the most probable storm hazards at this time. ..Leitman.. 06/01/2025 Read more

SPC Jun 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

2 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 PM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TEXAS TO SOUTHERN WISCONSIN... ...SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ...Texas to the Great Lakes... A southern stream upper shortwave trough over the southern/central High Plains will merge with the northern stream shortwave trough over the northern Plains on Tuesday as both features develop eastward toward the MS Valley. As this occurs, southwesterly flow aloft will increase from the Mid-MS Valley to the Great Lakes, with weaker west/southwesterly deep-layer flow extending southwestward into the southern Plains. At the surface, a cold front extending from northwest WI into central KS will develop east/southeast through the period, becoming positioned from northern lower MI to central TX by Wednesday morning. A 40-50 kt southwesterly low-level jet from the southern Plains into the Great Lakes region will maintain a plume of rich boundary layer moisture from OK/TX into WI ahead of the surface front. However, cloud cover may limit stronger heating with northward extent from the Mid-MS Valley into WI. As a result, stronger instability will likely remain confined from southwest MO into parts of OK/TX. Additionally, warm 500 mb temperatures will result in poor lapse rates. Nevertheless, sufficient MLCAPE and effective shear magnitudes around 25-35 kt will support isolated to widely scattered severe storm potential from northeast MO into WI. Further south from central/eastern KS/OK into southwest MO and southward into parts of TX, stronger instability will be present, but vertical shear will be more modest. As a result, storm mode may be somewhat messy with initial cells becoming clusters quickly. As the surface cold front develops southeast through the late afternoon and evening, some linear segments could also develop. Damaging gusts and hail appear to be the most probable storm hazards at this time. ..Leitman.. 06/01/2025 Read more

SPC Jun 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

2 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 PM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TEXAS TO SOUTHERN WISCONSIN... ...SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ...Texas to the Great Lakes... A southern stream upper shortwave trough over the southern/central High Plains will merge with the northern stream shortwave trough over the northern Plains on Tuesday as both features develop eastward toward the MS Valley. As this occurs, southwesterly flow aloft will increase from the Mid-MS Valley to the Great Lakes, with weaker west/southwesterly deep-layer flow extending southwestward into the southern Plains. At the surface, a cold front extending from northwest WI into central KS will develop east/southeast through the period, becoming positioned from northern lower MI to central TX by Wednesday morning. A 40-50 kt southwesterly low-level jet from the southern Plains into the Great Lakes region will maintain a plume of rich boundary layer moisture from OK/TX into WI ahead of the surface front. However, cloud cover may limit stronger heating with northward extent from the Mid-MS Valley into WI. As a result, stronger instability will likely remain confined from southwest MO into parts of OK/TX. Additionally, warm 500 mb temperatures will result in poor lapse rates. Nevertheless, sufficient MLCAPE and effective shear magnitudes around 25-35 kt will support isolated to widely scattered severe storm potential from northeast MO into WI. Further south from central/eastern KS/OK into southwest MO and southward into parts of TX, stronger instability will be present, but vertical shear will be more modest. As a result, storm mode may be somewhat messy with initial cells becoming clusters quickly. As the surface cold front develops southeast through the late afternoon and evening, some linear segments could also develop. Damaging gusts and hail appear to be the most probable storm hazards at this time. ..Leitman.. 06/01/2025 Read more

SPC Jun 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

2 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 PM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TEXAS TO SOUTHERN WISCONSIN... ...SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ...Texas to the Great Lakes... A southern stream upper shortwave trough over the southern/central High Plains will merge with the northern stream shortwave trough over the northern Plains on Tuesday as both features develop eastward toward the MS Valley. As this occurs, southwesterly flow aloft will increase from the Mid-MS Valley to the Great Lakes, with weaker west/southwesterly deep-layer flow extending southwestward into the southern Plains. At the surface, a cold front extending from northwest WI into central KS will develop east/southeast through the period, becoming positioned from northern lower MI to central TX by Wednesday morning. A 40-50 kt southwesterly low-level jet from the southern Plains into the Great Lakes region will maintain a plume of rich boundary layer moisture from OK/TX into WI ahead of the surface front. However, cloud cover may limit stronger heating with northward extent from the Mid-MS Valley into WI. As a result, stronger instability will likely remain confined from southwest MO into parts of OK/TX. Additionally, warm 500 mb temperatures will result in poor lapse rates. Nevertheless, sufficient MLCAPE and effective shear magnitudes around 25-35 kt will support isolated to widely scattered severe storm potential from northeast MO into WI. Further south from central/eastern KS/OK into southwest MO and southward into parts of TX, stronger instability will be present, but vertical shear will be more modest. As a result, storm mode may be somewhat messy with initial cells becoming clusters quickly. As the surface cold front develops southeast through the late afternoon and evening, some linear segments could also develop. Damaging gusts and hail appear to be the most probable storm hazards at this time. ..Leitman.. 06/01/2025 Read more

SPC Jun 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

2 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 PM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TEXAS TO SOUTHERN WISCONSIN... ...SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ...Texas to the Great Lakes... A southern stream upper shortwave trough over the southern/central High Plains will merge with the northern stream shortwave trough over the northern Plains on Tuesday as both features develop eastward toward the MS Valley. As this occurs, southwesterly flow aloft will increase from the Mid-MS Valley to the Great Lakes, with weaker west/southwesterly deep-layer flow extending southwestward into the southern Plains. At the surface, a cold front extending from northwest WI into central KS will develop east/southeast through the period, becoming positioned from northern lower MI to central TX by Wednesday morning. A 40-50 kt southwesterly low-level jet from the southern Plains into the Great Lakes region will maintain a plume of rich boundary layer moisture from OK/TX into WI ahead of the surface front. However, cloud cover may limit stronger heating with northward extent from the Mid-MS Valley into WI. As a result, stronger instability will likely remain confined from southwest MO into parts of OK/TX. Additionally, warm 500 mb temperatures will result in poor lapse rates. Nevertheless, sufficient MLCAPE and effective shear magnitudes around 25-35 kt will support isolated to widely scattered severe storm potential from northeast MO into WI. Further south from central/eastern KS/OK into southwest MO and southward into parts of TX, stronger instability will be present, but vertical shear will be more modest. As a result, storm mode may be somewhat messy with initial cells becoming clusters quickly. As the surface cold front develops southeast through the late afternoon and evening, some linear segments could also develop. Damaging gusts and hail appear to be the most probable storm hazards at this time. ..Leitman.. 06/01/2025 Read more

SPC Jun 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

2 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 PM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TEXAS TO SOUTHERN WISCONSIN... ...SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ...Texas to the Great Lakes... A southern stream upper shortwave trough over the southern/central High Plains will merge with the northern stream shortwave trough over the northern Plains on Tuesday as both features develop eastward toward the MS Valley. As this occurs, southwesterly flow aloft will increase from the Mid-MS Valley to the Great Lakes, with weaker west/southwesterly deep-layer flow extending southwestward into the southern Plains. At the surface, a cold front extending from northwest WI into central KS will develop east/southeast through the period, becoming positioned from northern lower MI to central TX by Wednesday morning. A 40-50 kt southwesterly low-level jet from the southern Plains into the Great Lakes region will maintain a plume of rich boundary layer moisture from OK/TX into WI ahead of the surface front. However, cloud cover may limit stronger heating with northward extent from the Mid-MS Valley into WI. As a result, stronger instability will likely remain confined from southwest MO into parts of OK/TX. Additionally, warm 500 mb temperatures will result in poor lapse rates. Nevertheless, sufficient MLCAPE and effective shear magnitudes around 25-35 kt will support isolated to widely scattered severe storm potential from northeast MO into WI. Further south from central/eastern KS/OK into southwest MO and southward into parts of TX, stronger instability will be present, but vertical shear will be more modest. As a result, storm mode may be somewhat messy with initial cells becoming clusters quickly. As the surface cold front develops southeast through the late afternoon and evening, some linear segments could also develop. Damaging gusts and hail appear to be the most probable storm hazards at this time. ..Leitman.. 06/01/2025 Read more

SPC Jun 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

2 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 PM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TEXAS TO SOUTHERN WISCONSIN... ...SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ...Texas to the Great Lakes... A southern stream upper shortwave trough over the southern/central High Plains will merge with the northern stream shortwave trough over the northern Plains on Tuesday as both features develop eastward toward the MS Valley. As this occurs, southwesterly flow aloft will increase from the Mid-MS Valley to the Great Lakes, with weaker west/southwesterly deep-layer flow extending southwestward into the southern Plains. At the surface, a cold front extending from northwest WI into central KS will develop east/southeast through the period, becoming positioned from northern lower MI to central TX by Wednesday morning. A 40-50 kt southwesterly low-level jet from the southern Plains into the Great Lakes region will maintain a plume of rich boundary layer moisture from OK/TX into WI ahead of the surface front. However, cloud cover may limit stronger heating with northward extent from the Mid-MS Valley into WI. As a result, stronger instability will likely remain confined from southwest MO into parts of OK/TX. Additionally, warm 500 mb temperatures will result in poor lapse rates. Nevertheless, sufficient MLCAPE and effective shear magnitudes around 25-35 kt will support isolated to widely scattered severe storm potential from northeast MO into WI. Further south from central/eastern KS/OK into southwest MO and southward into parts of TX, stronger instability will be present, but vertical shear will be more modest. As a result, storm mode may be somewhat messy with initial cells becoming clusters quickly. As the surface cold front develops southeast through the late afternoon and evening, some linear segments could also develop. Damaging gusts and hail appear to be the most probable storm hazards at this time. ..Leitman.. 06/01/2025 Read more

SPC Day 2 Fire Weather Outlook

2 months 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0109 PM CDT Sun Jun 01 2025 Valid 021200Z - 031200Z ...NO CRITICAL AREAS... The previous forecast remains on track with no changes needed. Latest forecast guidance continues to suggest fire weather potential will be limited across the country. Locally elevated conditions remain possible across southeast ID and adjacent portions of northern UT as well as the southern High Plains, but only modestly dry fuels and rain/thunderstorm chances should mitigate fire concerns for these regions (respectively). See the previous discussion below for additional details. ..Moore.. 06/01/2025 .PREV DISCUSSION... /ISSUED 1259 AM CDT Sun Jun 01 2025/ ...Synopsis... The main portion of cyclonic flow aloft will stay within the northern tier of the CONUS. The upper cyclone in the Southwest will continue east into the southern High Plains. Off the southern California coast, another upper cyclone will slowly drift southeastward. A surface front will push into the central/southern Great Basin. Fire weather concerns for most areas should remain low. Thunderstorms are probable in the Southwest, but PW values will be high enough to mitigate lightning ignition concerns. Dry northwesterly winds are possible in parts of the northern Great Basin. Locally elevated conditions are possible, but fuels are only marginally receptive currently and winds will also be marginal. With a surface low moving into northern California, dry northerly winds could reach 15-20 mph during the morning in parts of the Sacramento Valley. Fuels are only starting to cure and the strongest winds will be offset from the lowest RH. Locally elevated conditions are possible, however. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

2 months 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0109 PM CDT Sun Jun 01 2025 Valid 021200Z - 031200Z ...NO CRITICAL AREAS... The previous forecast remains on track with no changes needed. Latest forecast guidance continues to suggest fire weather potential will be limited across the country. Locally elevated conditions remain possible across southeast ID and adjacent portions of northern UT as well as the southern High Plains, but only modestly dry fuels and rain/thunderstorm chances should mitigate fire concerns for these regions (respectively). See the previous discussion below for additional details. ..Moore.. 06/01/2025 .PREV DISCUSSION... /ISSUED 1259 AM CDT Sun Jun 01 2025/ ...Synopsis... The main portion of cyclonic flow aloft will stay within the northern tier of the CONUS. The upper cyclone in the Southwest will continue east into the southern High Plains. Off the southern California coast, another upper cyclone will slowly drift southeastward. A surface front will push into the central/southern Great Basin. Fire weather concerns for most areas should remain low. Thunderstorms are probable in the Southwest, but PW values will be high enough to mitigate lightning ignition concerns. Dry northwesterly winds are possible in parts of the northern Great Basin. Locally elevated conditions are possible, but fuels are only marginally receptive currently and winds will also be marginal. With a surface low moving into northern California, dry northerly winds could reach 15-20 mph during the morning in parts of the Sacramento Valley. Fuels are only starting to cure and the strongest winds will be offset from the lowest RH. Locally elevated conditions are possible, however. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

2 months 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0109 PM CDT Sun Jun 01 2025 Valid 021200Z - 031200Z ...NO CRITICAL AREAS... The previous forecast remains on track with no changes needed. Latest forecast guidance continues to suggest fire weather potential will be limited across the country. Locally elevated conditions remain possible across southeast ID and adjacent portions of northern UT as well as the southern High Plains, but only modestly dry fuels and rain/thunderstorm chances should mitigate fire concerns for these regions (respectively). See the previous discussion below for additional details. ..Moore.. 06/01/2025 .PREV DISCUSSION... /ISSUED 1259 AM CDT Sun Jun 01 2025/ ...Synopsis... The main portion of cyclonic flow aloft will stay within the northern tier of the CONUS. The upper cyclone in the Southwest will continue east into the southern High Plains. Off the southern California coast, another upper cyclone will slowly drift southeastward. A surface front will push into the central/southern Great Basin. Fire weather concerns for most areas should remain low. Thunderstorms are probable in the Southwest, but PW values will be high enough to mitigate lightning ignition concerns. Dry northwesterly winds are possible in parts of the northern Great Basin. Locally elevated conditions are possible, but fuels are only marginally receptive currently and winds will also be marginal. With a surface low moving into northern California, dry northerly winds could reach 15-20 mph during the morning in parts of the Sacramento Valley. Fuels are only starting to cure and the strongest winds will be offset from the lowest RH. Locally elevated conditions are possible, however. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

2 months 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0109 PM CDT Sun Jun 01 2025 Valid 021200Z - 031200Z ...NO CRITICAL AREAS... The previous forecast remains on track with no changes needed. Latest forecast guidance continues to suggest fire weather potential will be limited across the country. Locally elevated conditions remain possible across southeast ID and adjacent portions of northern UT as well as the southern High Plains, but only modestly dry fuels and rain/thunderstorm chances should mitigate fire concerns for these regions (respectively). See the previous discussion below for additional details. ..Moore.. 06/01/2025 .PREV DISCUSSION... /ISSUED 1259 AM CDT Sun Jun 01 2025/ ...Synopsis... The main portion of cyclonic flow aloft will stay within the northern tier of the CONUS. The upper cyclone in the Southwest will continue east into the southern High Plains. Off the southern California coast, another upper cyclone will slowly drift southeastward. A surface front will push into the central/southern Great Basin. Fire weather concerns for most areas should remain low. Thunderstorms are probable in the Southwest, but PW values will be high enough to mitigate lightning ignition concerns. Dry northwesterly winds are possible in parts of the northern Great Basin. Locally elevated conditions are possible, but fuels are only marginally receptive currently and winds will also be marginal. With a surface low moving into northern California, dry northerly winds could reach 15-20 mph during the morning in parts of the Sacramento Valley. Fuels are only starting to cure and the strongest winds will be offset from the lowest RH. Locally elevated conditions are possible, however. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

2 months 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0109 PM CDT Sun Jun 01 2025 Valid 021200Z - 031200Z ...NO CRITICAL AREAS... The previous forecast remains on track with no changes needed. Latest forecast guidance continues to suggest fire weather potential will be limited across the country. Locally elevated conditions remain possible across southeast ID and adjacent portions of northern UT as well as the southern High Plains, but only modestly dry fuels and rain/thunderstorm chances should mitigate fire concerns for these regions (respectively). See the previous discussion below for additional details. ..Moore.. 06/01/2025 .PREV DISCUSSION... /ISSUED 1259 AM CDT Sun Jun 01 2025/ ...Synopsis... The main portion of cyclonic flow aloft will stay within the northern tier of the CONUS. The upper cyclone in the Southwest will continue east into the southern High Plains. Off the southern California coast, another upper cyclone will slowly drift southeastward. A surface front will push into the central/southern Great Basin. Fire weather concerns for most areas should remain low. Thunderstorms are probable in the Southwest, but PW values will be high enough to mitigate lightning ignition concerns. Dry northwesterly winds are possible in parts of the northern Great Basin. Locally elevated conditions are possible, but fuels are only marginally receptive currently and winds will also be marginal. With a surface low moving into northern California, dry northerly winds could reach 15-20 mph during the morning in parts of the Sacramento Valley. Fuels are only starting to cure and the strongest winds will be offset from the lowest RH. Locally elevated conditions are possible, however. ...Please see www.spc.noaa.gov/fire for graphic product... Read more