Severe Storms

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0215 AM CDT Mon Jun 30 2025 Valid 301200Z - 011200Z ...Synopsis... Across the US, sub-tropical ridging will build over the Plains, keeping stronger flow aloft displaced to the north while an upper low will overspread portions of the West Coast. Ahead of the low, breezy southerly winds will advect monsoon moisture northward into parts of CA and OR. Dry thunderstorms and dry/breezy conditions appear likely to support elevated fire-weather potential across the Northwest and Great Basin today. ...Northwest... Weak ascent from an approaching upper trough will allow for isolated to widely scattered thunderstorms across northern CA and southern OR through tonight. Strong heating and dry sub-cloud layers with steep lapse rates below 500mb will support a mixed wet/dry thunderstorm environment capable of occasional dry lightning strikes. Additionally, erratic outflow winds are likely near storms. The increased potential for dry lightning atop receptive fuels, warrants continuation of IsodryT probabilities where fire starts are possible. ...Great Basin... Beneath the upper ridge, very hot surface temperatures are expected over parts of NV and western UT. Southerly surface winds may gust to 15-20 mph through the afternoon, concurrent with widespread RH values below 15%. The presence of breezy low-level winds and the hot/dry conditions will overlap with a progressively drier and receptive fuels across NV. This could support a few hours of elevated fire-weather potential through this evening. ..Lyons.. 06/30/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0215 AM CDT Mon Jun 30 2025 Valid 301200Z - 011200Z ...Synopsis... Across the US, sub-tropical ridging will build over the Plains, keeping stronger flow aloft displaced to the north while an upper low will overspread portions of the West Coast. Ahead of the low, breezy southerly winds will advect monsoon moisture northward into parts of CA and OR. Dry thunderstorms and dry/breezy conditions appear likely to support elevated fire-weather potential across the Northwest and Great Basin today. ...Northwest... Weak ascent from an approaching upper trough will allow for isolated to widely scattered thunderstorms across northern CA and southern OR through tonight. Strong heating and dry sub-cloud layers with steep lapse rates below 500mb will support a mixed wet/dry thunderstorm environment capable of occasional dry lightning strikes. Additionally, erratic outflow winds are likely near storms. The increased potential for dry lightning atop receptive fuels, warrants continuation of IsodryT probabilities where fire starts are possible. ...Great Basin... Beneath the upper ridge, very hot surface temperatures are expected over parts of NV and western UT. Southerly surface winds may gust to 15-20 mph through the afternoon, concurrent with widespread RH values below 15%. The presence of breezy low-level winds and the hot/dry conditions will overlap with a progressively drier and receptive fuels across NV. This could support a few hours of elevated fire-weather potential through this evening. ..Lyons.. 06/30/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0215 AM CDT Mon Jun 30 2025 Valid 301200Z - 011200Z ...Synopsis... Across the US, sub-tropical ridging will build over the Plains, keeping stronger flow aloft displaced to the north while an upper low will overspread portions of the West Coast. Ahead of the low, breezy southerly winds will advect monsoon moisture northward into parts of CA and OR. Dry thunderstorms and dry/breezy conditions appear likely to support elevated fire-weather potential across the Northwest and Great Basin today. ...Northwest... Weak ascent from an approaching upper trough will allow for isolated to widely scattered thunderstorms across northern CA and southern OR through tonight. Strong heating and dry sub-cloud layers with steep lapse rates below 500mb will support a mixed wet/dry thunderstorm environment capable of occasional dry lightning strikes. Additionally, erratic outflow winds are likely near storms. The increased potential for dry lightning atop receptive fuels, warrants continuation of IsodryT probabilities where fire starts are possible. ...Great Basin... Beneath the upper ridge, very hot surface temperatures are expected over parts of NV and western UT. Southerly surface winds may gust to 15-20 mph through the afternoon, concurrent with widespread RH values below 15%. The presence of breezy low-level winds and the hot/dry conditions will overlap with a progressively drier and receptive fuels across NV. This could support a few hours of elevated fire-weather potential through this evening. ..Lyons.. 06/30/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0215 AM CDT Mon Jun 30 2025 Valid 301200Z - 011200Z ...Synopsis... Across the US, sub-tropical ridging will build over the Plains, keeping stronger flow aloft displaced to the north while an upper low will overspread portions of the West Coast. Ahead of the low, breezy southerly winds will advect monsoon moisture northward into parts of CA and OR. Dry thunderstorms and dry/breezy conditions appear likely to support elevated fire-weather potential across the Northwest and Great Basin today. ...Northwest... Weak ascent from an approaching upper trough will allow for isolated to widely scattered thunderstorms across northern CA and southern OR through tonight. Strong heating and dry sub-cloud layers with steep lapse rates below 500mb will support a mixed wet/dry thunderstorm environment capable of occasional dry lightning strikes. Additionally, erratic outflow winds are likely near storms. The increased potential for dry lightning atop receptive fuels, warrants continuation of IsodryT probabilities where fire starts are possible. ...Great Basin... Beneath the upper ridge, very hot surface temperatures are expected over parts of NV and western UT. Southerly surface winds may gust to 15-20 mph through the afternoon, concurrent with widespread RH values below 15%. The presence of breezy low-level winds and the hot/dry conditions will overlap with a progressively drier and receptive fuels across NV. This could support a few hours of elevated fire-weather potential through this evening. ..Lyons.. 06/30/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0215 AM CDT Mon Jun 30 2025 Valid 301200Z - 011200Z ...Synopsis... Across the US, sub-tropical ridging will build over the Plains, keeping stronger flow aloft displaced to the north while an upper low will overspread portions of the West Coast. Ahead of the low, breezy southerly winds will advect monsoon moisture northward into parts of CA and OR. Dry thunderstorms and dry/breezy conditions appear likely to support elevated fire-weather potential across the Northwest and Great Basin today. ...Northwest... Weak ascent from an approaching upper trough will allow for isolated to widely scattered thunderstorms across northern CA and southern OR through tonight. Strong heating and dry sub-cloud layers with steep lapse rates below 500mb will support a mixed wet/dry thunderstorm environment capable of occasional dry lightning strikes. Additionally, erratic outflow winds are likely near storms. The increased potential for dry lightning atop receptive fuels, warrants continuation of IsodryT probabilities where fire starts are possible. ...Great Basin... Beneath the upper ridge, very hot surface temperatures are expected over parts of NV and western UT. Southerly surface winds may gust to 15-20 mph through the afternoon, concurrent with widespread RH values below 15%. The presence of breezy low-level winds and the hot/dry conditions will overlap with a progressively drier and receptive fuels across NV. This could support a few hours of elevated fire-weather potential through this evening. ..Lyons.. 06/30/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0215 AM CDT Mon Jun 30 2025 Valid 301200Z - 011200Z ...Synopsis... Across the US, sub-tropical ridging will build over the Plains, keeping stronger flow aloft displaced to the north while an upper low will overspread portions of the West Coast. Ahead of the low, breezy southerly winds will advect monsoon moisture northward into parts of CA and OR. Dry thunderstorms and dry/breezy conditions appear likely to support elevated fire-weather potential across the Northwest and Great Basin today. ...Northwest... Weak ascent from an approaching upper trough will allow for isolated to widely scattered thunderstorms across northern CA and southern OR through tonight. Strong heating and dry sub-cloud layers with steep lapse rates below 500mb will support a mixed wet/dry thunderstorm environment capable of occasional dry lightning strikes. Additionally, erratic outflow winds are likely near storms. The increased potential for dry lightning atop receptive fuels, warrants continuation of IsodryT probabilities where fire starts are possible. ...Great Basin... Beneath the upper ridge, very hot surface temperatures are expected over parts of NV and western UT. Southerly surface winds may gust to 15-20 mph through the afternoon, concurrent with widespread RH values below 15%. The presence of breezy low-level winds and the hot/dry conditions will overlap with a progressively drier and receptive fuels across NV. This could support a few hours of elevated fire-weather potential through this evening. ..Lyons.. 06/30/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0215 AM CDT Mon Jun 30 2025 Valid 301200Z - 011200Z ...Synopsis... Across the US, sub-tropical ridging will build over the Plains, keeping stronger flow aloft displaced to the north while an upper low will overspread portions of the West Coast. Ahead of the low, breezy southerly winds will advect monsoon moisture northward into parts of CA and OR. Dry thunderstorms and dry/breezy conditions appear likely to support elevated fire-weather potential across the Northwest and Great Basin today. ...Northwest... Weak ascent from an approaching upper trough will allow for isolated to widely scattered thunderstorms across northern CA and southern OR through tonight. Strong heating and dry sub-cloud layers with steep lapse rates below 500mb will support a mixed wet/dry thunderstorm environment capable of occasional dry lightning strikes. Additionally, erratic outflow winds are likely near storms. The increased potential for dry lightning atop receptive fuels, warrants continuation of IsodryT probabilities where fire starts are possible. ...Great Basin... Beneath the upper ridge, very hot surface temperatures are expected over parts of NV and western UT. Southerly surface winds may gust to 15-20 mph through the afternoon, concurrent with widespread RH values below 15%. The presence of breezy low-level winds and the hot/dry conditions will overlap with a progressively drier and receptive fuels across NV. This could support a few hours of elevated fire-weather potential through this evening. ..Lyons.. 06/30/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0215 AM CDT Mon Jun 30 2025 Valid 301200Z - 011200Z ...Synopsis... Across the US, sub-tropical ridging will build over the Plains, keeping stronger flow aloft displaced to the north while an upper low will overspread portions of the West Coast. Ahead of the low, breezy southerly winds will advect monsoon moisture northward into parts of CA and OR. Dry thunderstorms and dry/breezy conditions appear likely to support elevated fire-weather potential across the Northwest and Great Basin today. ...Northwest... Weak ascent from an approaching upper trough will allow for isolated to widely scattered thunderstorms across northern CA and southern OR through tonight. Strong heating and dry sub-cloud layers with steep lapse rates below 500mb will support a mixed wet/dry thunderstorm environment capable of occasional dry lightning strikes. Additionally, erratic outflow winds are likely near storms. The increased potential for dry lightning atop receptive fuels, warrants continuation of IsodryT probabilities where fire starts are possible. ...Great Basin... Beneath the upper ridge, very hot surface temperatures are expected over parts of NV and western UT. Southerly surface winds may gust to 15-20 mph through the afternoon, concurrent with widespread RH values below 15%. The presence of breezy low-level winds and the hot/dry conditions will overlap with a progressively drier and receptive fuels across NV. This could support a few hours of elevated fire-weather potential through this evening. ..Lyons.. 06/30/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0215 AM CDT Mon Jun 30 2025 Valid 301200Z - 011200Z ...Synopsis... Across the US, sub-tropical ridging will build over the Plains, keeping stronger flow aloft displaced to the north while an upper low will overspread portions of the West Coast. Ahead of the low, breezy southerly winds will advect monsoon moisture northward into parts of CA and OR. Dry thunderstorms and dry/breezy conditions appear likely to support elevated fire-weather potential across the Northwest and Great Basin today. ...Northwest... Weak ascent from an approaching upper trough will allow for isolated to widely scattered thunderstorms across northern CA and southern OR through tonight. Strong heating and dry sub-cloud layers with steep lapse rates below 500mb will support a mixed wet/dry thunderstorm environment capable of occasional dry lightning strikes. Additionally, erratic outflow winds are likely near storms. The increased potential for dry lightning atop receptive fuels, warrants continuation of IsodryT probabilities where fire starts are possible. ...Great Basin... Beneath the upper ridge, very hot surface temperatures are expected over parts of NV and western UT. Southerly surface winds may gust to 15-20 mph through the afternoon, concurrent with widespread RH values below 15%. The presence of breezy low-level winds and the hot/dry conditions will overlap with a progressively drier and receptive fuels across NV. This could support a few hours of elevated fire-weather potential through this evening. ..Lyons.. 06/30/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0215 AM CDT Mon Jun 30 2025 Valid 301200Z - 011200Z ...Synopsis... Across the US, sub-tropical ridging will build over the Plains, keeping stronger flow aloft displaced to the north while an upper low will overspread portions of the West Coast. Ahead of the low, breezy southerly winds will advect monsoon moisture northward into parts of CA and OR. Dry thunderstorms and dry/breezy conditions appear likely to support elevated fire-weather potential across the Northwest and Great Basin today. ...Northwest... Weak ascent from an approaching upper trough will allow for isolated to widely scattered thunderstorms across northern CA and southern OR through tonight. Strong heating and dry sub-cloud layers with steep lapse rates below 500mb will support a mixed wet/dry thunderstorm environment capable of occasional dry lightning strikes. Additionally, erratic outflow winds are likely near storms. The increased potential for dry lightning atop receptive fuels, warrants continuation of IsodryT probabilities where fire starts are possible. ...Great Basin... Beneath the upper ridge, very hot surface temperatures are expected over parts of NV and western UT. Southerly surface winds may gust to 15-20 mph through the afternoon, concurrent with widespread RH values below 15%. The presence of breezy low-level winds and the hot/dry conditions will overlap with a progressively drier and receptive fuels across NV. This could support a few hours of elevated fire-weather potential through this evening. ..Lyons.. 06/30/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

WW 0480 Status Updates
STATUS REPORT ON WW 480 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SSW LBF TO 5 SSE LBF TO 30 NE LBF TO 35 ESE BUB. ..BROYLES..06/30/25 ATTN...WFO...GLD...GID...LBF... STATUS REPORT FOR WS 480 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC039-065-089-123-137-141-147-163-183-300740- KS . KANSAS COUNTIES INCLUDED ARE DECATUR GRAHAM JEWELL MITCHELL NORTON OSBORNE PHILLIPS ROOKS SMITH NEC001-019-035-041-047-059-061-063-065-073-079-081-083-085-087- 093-099-111-121-129-137-145-163-169-175-181-300740- NE . NEBRASKA COUNTIES INCLUDED ARE ADAMS BUFFALO CLAY CUSTER DAWSON FILLMORE FRANKLIN FRONTIER FURNAS GOSPER HALL HAMILTON HARLAN HAYES HITCHCOCK HOWARD KEARNEY LINCOLN MERRICK NUCKOLLS PHELPS RED WILLOW SHERMAN THAYER VALLEY WEBSTER Read more

SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1256 AM CDT Mon Jun 30 2025 Valid 011200Z - 021200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE MID-ATLANTIC... ...SUMMARY... Scattered strong to severe storms are possible across parts of the Mid-Atlantic into the Northeast on Tuesday afternoon/evening. An isolated severe storm may also occur over parts of the central High Plains. ...Synopsis... A mid-level trough will traverse from the Great Lakes to the Northeast on Tuesday. At the surface, a cold front will move from the Great Lakes/Ohio Valley to the Appalachians during the day and eventually into the Atlantic by the late evening. ...Carolinas to the Northeast... A very moist airmass will be in place ahead of the cold front on Tuesday. Moderate instability is expected to develop across the region as the boundary layer warms during the afternoon. Mid-level flow will only be around 20 knots across southern Virginia into the Carolinas. Therefore, while a few stronger storms may result in damaging wind gusts, overall storm organization is expected to be limited. From northern Virginia into the Northeast, stronger mid-level flow (40 to 45 knots) will support greater storm organization. The best overlap between the sufficient shear and greatest instability will be across northern Virginia into eastern Pennsylvania and New Jersey. A very moist profile will support water-loaded downdrafts capable of damaging wind producing microbursts. A more organized linear segment will likely result in a greater severe weather threat in the Mid-Atlantic region. A conditionally greater severe weather threat is possible farther northeast across Vermont/New Hampshire and vicinity. If 1500+ J/kg MLCAPE can develop across this region, more substantial severe weather is possible given the stronger shear and closer proximity to the surface low across southeast Canada. ..Bentley.. 06/30/2025 Read more

SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1256 AM CDT Mon Jun 30 2025 Valid 011200Z - 021200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE MID-ATLANTIC... ...SUMMARY... Scattered strong to severe storms are possible across parts of the Mid-Atlantic into the Northeast on Tuesday afternoon/evening. An isolated severe storm may also occur over parts of the central High Plains. ...Synopsis... A mid-level trough will traverse from the Great Lakes to the Northeast on Tuesday. At the surface, a cold front will move from the Great Lakes/Ohio Valley to the Appalachians during the day and eventually into the Atlantic by the late evening. ...Carolinas to the Northeast... A very moist airmass will be in place ahead of the cold front on Tuesday. Moderate instability is expected to develop across the region as the boundary layer warms during the afternoon. Mid-level flow will only be around 20 knots across southern Virginia into the Carolinas. Therefore, while a few stronger storms may result in damaging wind gusts, overall storm organization is expected to be limited. From northern Virginia into the Northeast, stronger mid-level flow (40 to 45 knots) will support greater storm organization. The best overlap between the sufficient shear and greatest instability will be across northern Virginia into eastern Pennsylvania and New Jersey. A very moist profile will support water-loaded downdrafts capable of damaging wind producing microbursts. A more organized linear segment will likely result in a greater severe weather threat in the Mid-Atlantic region. A conditionally greater severe weather threat is possible farther northeast across Vermont/New Hampshire and vicinity. If 1500+ J/kg MLCAPE can develop across this region, more substantial severe weather is possible given the stronger shear and closer proximity to the surface low across southeast Canada. ..Bentley.. 06/30/2025 Read more

SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1256 AM CDT Mon Jun 30 2025 Valid 011200Z - 021200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE MID-ATLANTIC... ...SUMMARY... Scattered strong to severe storms are possible across parts of the Mid-Atlantic into the Northeast on Tuesday afternoon/evening. An isolated severe storm may also occur over parts of the central High Plains. ...Synopsis... A mid-level trough will traverse from the Great Lakes to the Northeast on Tuesday. At the surface, a cold front will move from the Great Lakes/Ohio Valley to the Appalachians during the day and eventually into the Atlantic by the late evening. ...Carolinas to the Northeast... A very moist airmass will be in place ahead of the cold front on Tuesday. Moderate instability is expected to develop across the region as the boundary layer warms during the afternoon. Mid-level flow will only be around 20 knots across southern Virginia into the Carolinas. Therefore, while a few stronger storms may result in damaging wind gusts, overall storm organization is expected to be limited. From northern Virginia into the Northeast, stronger mid-level flow (40 to 45 knots) will support greater storm organization. The best overlap between the sufficient shear and greatest instability will be across northern Virginia into eastern Pennsylvania and New Jersey. A very moist profile will support water-loaded downdrafts capable of damaging wind producing microbursts. A more organized linear segment will likely result in a greater severe weather threat in the Mid-Atlantic region. A conditionally greater severe weather threat is possible farther northeast across Vermont/New Hampshire and vicinity. If 1500+ J/kg MLCAPE can develop across this region, more substantial severe weather is possible given the stronger shear and closer proximity to the surface low across southeast Canada. ..Bentley.. 06/30/2025 Read more

SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1256 AM CDT Mon Jun 30 2025 Valid 011200Z - 021200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE MID-ATLANTIC... ...SUMMARY... Scattered strong to severe storms are possible across parts of the Mid-Atlantic into the Northeast on Tuesday afternoon/evening. An isolated severe storm may also occur over parts of the central High Plains. ...Synopsis... A mid-level trough will traverse from the Great Lakes to the Northeast on Tuesday. At the surface, a cold front will move from the Great Lakes/Ohio Valley to the Appalachians during the day and eventually into the Atlantic by the late evening. ...Carolinas to the Northeast... A very moist airmass will be in place ahead of the cold front on Tuesday. Moderate instability is expected to develop across the region as the boundary layer warms during the afternoon. Mid-level flow will only be around 20 knots across southern Virginia into the Carolinas. Therefore, while a few stronger storms may result in damaging wind gusts, overall storm organization is expected to be limited. From northern Virginia into the Northeast, stronger mid-level flow (40 to 45 knots) will support greater storm organization. The best overlap between the sufficient shear and greatest instability will be across northern Virginia into eastern Pennsylvania and New Jersey. A very moist profile will support water-loaded downdrafts capable of damaging wind producing microbursts. A more organized linear segment will likely result in a greater severe weather threat in the Mid-Atlantic region. A conditionally greater severe weather threat is possible farther northeast across Vermont/New Hampshire and vicinity. If 1500+ J/kg MLCAPE can develop across this region, more substantial severe weather is possible given the stronger shear and closer proximity to the surface low across southeast Canada. ..Bentley.. 06/30/2025 Read more

SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1256 AM CDT Mon Jun 30 2025 Valid 011200Z - 021200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE MID-ATLANTIC... ...SUMMARY... Scattered strong to severe storms are possible across parts of the Mid-Atlantic into the Northeast on Tuesday afternoon/evening. An isolated severe storm may also occur over parts of the central High Plains. ...Synopsis... A mid-level trough will traverse from the Great Lakes to the Northeast on Tuesday. At the surface, a cold front will move from the Great Lakes/Ohio Valley to the Appalachians during the day and eventually into the Atlantic by the late evening. ...Carolinas to the Northeast... A very moist airmass will be in place ahead of the cold front on Tuesday. Moderate instability is expected to develop across the region as the boundary layer warms during the afternoon. Mid-level flow will only be around 20 knots across southern Virginia into the Carolinas. Therefore, while a few stronger storms may result in damaging wind gusts, overall storm organization is expected to be limited. From northern Virginia into the Northeast, stronger mid-level flow (40 to 45 knots) will support greater storm organization. The best overlap between the sufficient shear and greatest instability will be across northern Virginia into eastern Pennsylvania and New Jersey. A very moist profile will support water-loaded downdrafts capable of damaging wind producing microbursts. A more organized linear segment will likely result in a greater severe weather threat in the Mid-Atlantic region. A conditionally greater severe weather threat is possible farther northeast across Vermont/New Hampshire and vicinity. If 1500+ J/kg MLCAPE can develop across this region, more substantial severe weather is possible given the stronger shear and closer proximity to the surface low across southeast Canada. ..Bentley.. 06/30/2025 Read more

SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1256 AM CDT Mon Jun 30 2025 Valid 011200Z - 021200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE MID-ATLANTIC... ...SUMMARY... Scattered strong to severe storms are possible across parts of the Mid-Atlantic into the Northeast on Tuesday afternoon/evening. An isolated severe storm may also occur over parts of the central High Plains. ...Synopsis... A mid-level trough will traverse from the Great Lakes to the Northeast on Tuesday. At the surface, a cold front will move from the Great Lakes/Ohio Valley to the Appalachians during the day and eventually into the Atlantic by the late evening. ...Carolinas to the Northeast... A very moist airmass will be in place ahead of the cold front on Tuesday. Moderate instability is expected to develop across the region as the boundary layer warms during the afternoon. Mid-level flow will only be around 20 knots across southern Virginia into the Carolinas. Therefore, while a few stronger storms may result in damaging wind gusts, overall storm organization is expected to be limited. From northern Virginia into the Northeast, stronger mid-level flow (40 to 45 knots) will support greater storm organization. The best overlap between the sufficient shear and greatest instability will be across northern Virginia into eastern Pennsylvania and New Jersey. A very moist profile will support water-loaded downdrafts capable of damaging wind producing microbursts. A more organized linear segment will likely result in a greater severe weather threat in the Mid-Atlantic region. A conditionally greater severe weather threat is possible farther northeast across Vermont/New Hampshire and vicinity. If 1500+ J/kg MLCAPE can develop across this region, more substantial severe weather is possible given the stronger shear and closer proximity to the surface low across southeast Canada. ..Bentley.. 06/30/2025 Read more

SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1256 AM CDT Mon Jun 30 2025 Valid 011200Z - 021200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE MID-ATLANTIC... ...SUMMARY... Scattered strong to severe storms are possible across parts of the Mid-Atlantic into the Northeast on Tuesday afternoon/evening. An isolated severe storm may also occur over parts of the central High Plains. ...Synopsis... A mid-level trough will traverse from the Great Lakes to the Northeast on Tuesday. At the surface, a cold front will move from the Great Lakes/Ohio Valley to the Appalachians during the day and eventually into the Atlantic by the late evening. ...Carolinas to the Northeast... A very moist airmass will be in place ahead of the cold front on Tuesday. Moderate instability is expected to develop across the region as the boundary layer warms during the afternoon. Mid-level flow will only be around 20 knots across southern Virginia into the Carolinas. Therefore, while a few stronger storms may result in damaging wind gusts, overall storm organization is expected to be limited. From northern Virginia into the Northeast, stronger mid-level flow (40 to 45 knots) will support greater storm organization. The best overlap between the sufficient shear and greatest instability will be across northern Virginia into eastern Pennsylvania and New Jersey. A very moist profile will support water-loaded downdrafts capable of damaging wind producing microbursts. A more organized linear segment will likely result in a greater severe weather threat in the Mid-Atlantic region. A conditionally greater severe weather threat is possible farther northeast across Vermont/New Hampshire and vicinity. If 1500+ J/kg MLCAPE can develop across this region, more substantial severe weather is possible given the stronger shear and closer proximity to the surface low across southeast Canada. ..Bentley.. 06/30/2025 Read more

SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1256 AM CDT Mon Jun 30 2025 Valid 011200Z - 021200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE MID-ATLANTIC... ...SUMMARY... Scattered strong to severe storms are possible across parts of the Mid-Atlantic into the Northeast on Tuesday afternoon/evening. An isolated severe storm may also occur over parts of the central High Plains. ...Synopsis... A mid-level trough will traverse from the Great Lakes to the Northeast on Tuesday. At the surface, a cold front will move from the Great Lakes/Ohio Valley to the Appalachians during the day and eventually into the Atlantic by the late evening. ...Carolinas to the Northeast... A very moist airmass will be in place ahead of the cold front on Tuesday. Moderate instability is expected to develop across the region as the boundary layer warms during the afternoon. Mid-level flow will only be around 20 knots across southern Virginia into the Carolinas. Therefore, while a few stronger storms may result in damaging wind gusts, overall storm organization is expected to be limited. From northern Virginia into the Northeast, stronger mid-level flow (40 to 45 knots) will support greater storm organization. The best overlap between the sufficient shear and greatest instability will be across northern Virginia into eastern Pennsylvania and New Jersey. A very moist profile will support water-loaded downdrafts capable of damaging wind producing microbursts. A more organized linear segment will likely result in a greater severe weather threat in the Mid-Atlantic region. A conditionally greater severe weather threat is possible farther northeast across Vermont/New Hampshire and vicinity. If 1500+ J/kg MLCAPE can develop across this region, more substantial severe weather is possible given the stronger shear and closer proximity to the surface low across southeast Canada. ..Bentley.. 06/30/2025 Read more

SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1256 AM CDT Mon Jun 30 2025 Valid 011200Z - 021200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE MID-ATLANTIC... ...SUMMARY... Scattered strong to severe storms are possible across parts of the Mid-Atlantic into the Northeast on Tuesday afternoon/evening. An isolated severe storm may also occur over parts of the central High Plains. ...Synopsis... A mid-level trough will traverse from the Great Lakes to the Northeast on Tuesday. At the surface, a cold front will move from the Great Lakes/Ohio Valley to the Appalachians during the day and eventually into the Atlantic by the late evening. ...Carolinas to the Northeast... A very moist airmass will be in place ahead of the cold front on Tuesday. Moderate instability is expected to develop across the region as the boundary layer warms during the afternoon. Mid-level flow will only be around 20 knots across southern Virginia into the Carolinas. Therefore, while a few stronger storms may result in damaging wind gusts, overall storm organization is expected to be limited. From northern Virginia into the Northeast, stronger mid-level flow (40 to 45 knots) will support greater storm organization. The best overlap between the sufficient shear and greatest instability will be across northern Virginia into eastern Pennsylvania and New Jersey. A very moist profile will support water-loaded downdrafts capable of damaging wind producing microbursts. A more organized linear segment will likely result in a greater severe weather threat in the Mid-Atlantic region. A conditionally greater severe weather threat is possible farther northeast across Vermont/New Hampshire and vicinity. If 1500+ J/kg MLCAPE can develop across this region, more substantial severe weather is possible given the stronger shear and closer proximity to the surface low across southeast Canada. ..Bentley.. 06/30/2025 Read more