SPC Apr 12, 2024 0600 UTC Day 2 Convective Outlook

1 year 4 months ago
SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1254 AM CDT Fri Apr 12 2024 Valid 131200Z - 141200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS IN CENTRAL OR... ...SUMMARY... Isolated severe hail is possible across central Oregon between about 2 to 8 PM MDT on Saturday. ...OR... An amplified mid/upper low just off the central CA coast will dampen as it gradually wobbles inland near the Bay Area into the Central Valley by early Sunday. The initially meridional and fast mid-level jet east of the low will weaken somewhat as it flattens to a southwesterly orientation across south CA into the eastern Great Basin. Mid-level flow will become more backed and subside somewhat across the Northwest relative to Friday. But within the exit region of the mid-level jet, inland surface cyclogenesis will occur in the northwest NV/southeast OR vicinity. To the north of this cyclone, moderate elongation of the hodograph is anticipated with a sufficient wind profile to sustain a supercell or two. 00Z CAMs are fairly consistent with this signal across the central OR vicinity. Despite MLCAPE holding at or below 500 J/kg, isolated severe hail will be possible from mid-afternoon to early evening. ...Great Lakes... Poleward low-level moisture return from the western Gulf will become more pervasive across the central states on Saturday as a surface anticyclone drifts east in the northeast Gulf. This will occur beneath an increasingly broad elevated mixed layer. By Saturday night, strengthening low-level warm theta-e advection should yield at least isolated, highly elevated convection across northern WI and parts of MI. Available CAM guidance in this time frame is generally more sparse with coverage relative to convectively parameterized guidance. It seems likely that bulk of elevated convection will remain north-northeast of capping from the elevated mixed layer until perhaps close to the end of the period. MUCAPE should largely remain weak with only modest effective shear in the cloud-bearing layer. Small hail is possible with overall thunder probabilities from 10-20 percent. ...Central Great Plains... Guidance is consistent with indicating a minor mid-level impulse drifting east from the southern Rockies into KS/NE on Saturday, impinging on the full latitude mid-level ridge across the Great Plains. Rather deeply mixed thermodynamic profiles with LCL heights approaching 600 mb are expected within the modified moisture return ahead of a weak surface trough/dryline. 00Z CAMs outside of the HRRR are fairly consistent in simulating convective development with the HRW-FV3 the most aggressive of the HREF members. MLCAPE should be meager at most, but a locally strong gust from the high-based, low-topped convection is possible given such large DCAPE. ..Grams.. 04/12/2024 Read more

SPC Apr 12, 2024 0600 UTC Day 2 Convective Outlook

1 year 4 months ago
SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1254 AM CDT Fri Apr 12 2024 Valid 131200Z - 141200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS IN CENTRAL OR... ...SUMMARY... Isolated severe hail is possible across central Oregon between about 2 to 8 PM MDT on Saturday. ...OR... An amplified mid/upper low just off the central CA coast will dampen as it gradually wobbles inland near the Bay Area into the Central Valley by early Sunday. The initially meridional and fast mid-level jet east of the low will weaken somewhat as it flattens to a southwesterly orientation across south CA into the eastern Great Basin. Mid-level flow will become more backed and subside somewhat across the Northwest relative to Friday. But within the exit region of the mid-level jet, inland surface cyclogenesis will occur in the northwest NV/southeast OR vicinity. To the north of this cyclone, moderate elongation of the hodograph is anticipated with a sufficient wind profile to sustain a supercell or two. 00Z CAMs are fairly consistent with this signal across the central OR vicinity. Despite MLCAPE holding at or below 500 J/kg, isolated severe hail will be possible from mid-afternoon to early evening. ...Great Lakes... Poleward low-level moisture return from the western Gulf will become more pervasive across the central states on Saturday as a surface anticyclone drifts east in the northeast Gulf. This will occur beneath an increasingly broad elevated mixed layer. By Saturday night, strengthening low-level warm theta-e advection should yield at least isolated, highly elevated convection across northern WI and parts of MI. Available CAM guidance in this time frame is generally more sparse with coverage relative to convectively parameterized guidance. It seems likely that bulk of elevated convection will remain north-northeast of capping from the elevated mixed layer until perhaps close to the end of the period. MUCAPE should largely remain weak with only modest effective shear in the cloud-bearing layer. Small hail is possible with overall thunder probabilities from 10-20 percent. ...Central Great Plains... Guidance is consistent with indicating a minor mid-level impulse drifting east from the southern Rockies into KS/NE on Saturday, impinging on the full latitude mid-level ridge across the Great Plains. Rather deeply mixed thermodynamic profiles with LCL heights approaching 600 mb are expected within the modified moisture return ahead of a weak surface trough/dryline. 00Z CAMs outside of the HRRR are fairly consistent in simulating convective development with the HRW-FV3 the most aggressive of the HREF members. MLCAPE should be meager at most, but a locally strong gust from the high-based, low-topped convection is possible given such large DCAPE. ..Grams.. 04/12/2024 Read more

SPC Apr 12, 2024 0600 UTC Day 2 Convective Outlook

1 year 4 months ago
SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1254 AM CDT Fri Apr 12 2024 Valid 131200Z - 141200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS IN CENTRAL OR... ...SUMMARY... Isolated severe hail is possible across central Oregon between about 2 to 8 PM MDT on Saturday. ...OR... An amplified mid/upper low just off the central CA coast will dampen as it gradually wobbles inland near the Bay Area into the Central Valley by early Sunday. The initially meridional and fast mid-level jet east of the low will weaken somewhat as it flattens to a southwesterly orientation across south CA into the eastern Great Basin. Mid-level flow will become more backed and subside somewhat across the Northwest relative to Friday. But within the exit region of the mid-level jet, inland surface cyclogenesis will occur in the northwest NV/southeast OR vicinity. To the north of this cyclone, moderate elongation of the hodograph is anticipated with a sufficient wind profile to sustain a supercell or two. 00Z CAMs are fairly consistent with this signal across the central OR vicinity. Despite MLCAPE holding at or below 500 J/kg, isolated severe hail will be possible from mid-afternoon to early evening. ...Great Lakes... Poleward low-level moisture return from the western Gulf will become more pervasive across the central states on Saturday as a surface anticyclone drifts east in the northeast Gulf. This will occur beneath an increasingly broad elevated mixed layer. By Saturday night, strengthening low-level warm theta-e advection should yield at least isolated, highly elevated convection across northern WI and parts of MI. Available CAM guidance in this time frame is generally more sparse with coverage relative to convectively parameterized guidance. It seems likely that bulk of elevated convection will remain north-northeast of capping from the elevated mixed layer until perhaps close to the end of the period. MUCAPE should largely remain weak with only modest effective shear in the cloud-bearing layer. Small hail is possible with overall thunder probabilities from 10-20 percent. ...Central Great Plains... Guidance is consistent with indicating a minor mid-level impulse drifting east from the southern Rockies into KS/NE on Saturday, impinging on the full latitude mid-level ridge across the Great Plains. Rather deeply mixed thermodynamic profiles with LCL heights approaching 600 mb are expected within the modified moisture return ahead of a weak surface trough/dryline. 00Z CAMs outside of the HRRR are fairly consistent in simulating convective development with the HRW-FV3 the most aggressive of the HREF members. MLCAPE should be meager at most, but a locally strong gust from the high-based, low-topped convection is possible given such large DCAPE. ..Grams.. 04/12/2024 Read more

SPC Apr 12, 2024 0600 UTC Day 2 Convective Outlook

1 year 4 months ago
SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1254 AM CDT Fri Apr 12 2024 Valid 131200Z - 141200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS IN CENTRAL OR... ...SUMMARY... Isolated severe hail is possible across central Oregon between about 2 to 8 PM MDT on Saturday. ...OR... An amplified mid/upper low just off the central CA coast will dampen as it gradually wobbles inland near the Bay Area into the Central Valley by early Sunday. The initially meridional and fast mid-level jet east of the low will weaken somewhat as it flattens to a southwesterly orientation across south CA into the eastern Great Basin. Mid-level flow will become more backed and subside somewhat across the Northwest relative to Friday. But within the exit region of the mid-level jet, inland surface cyclogenesis will occur in the northwest NV/southeast OR vicinity. To the north of this cyclone, moderate elongation of the hodograph is anticipated with a sufficient wind profile to sustain a supercell or two. 00Z CAMs are fairly consistent with this signal across the central OR vicinity. Despite MLCAPE holding at or below 500 J/kg, isolated severe hail will be possible from mid-afternoon to early evening. ...Great Lakes... Poleward low-level moisture return from the western Gulf will become more pervasive across the central states on Saturday as a surface anticyclone drifts east in the northeast Gulf. This will occur beneath an increasingly broad elevated mixed layer. By Saturday night, strengthening low-level warm theta-e advection should yield at least isolated, highly elevated convection across northern WI and parts of MI. Available CAM guidance in this time frame is generally more sparse with coverage relative to convectively parameterized guidance. It seems likely that bulk of elevated convection will remain north-northeast of capping from the elevated mixed layer until perhaps close to the end of the period. MUCAPE should largely remain weak with only modest effective shear in the cloud-bearing layer. Small hail is possible with overall thunder probabilities from 10-20 percent. ...Central Great Plains... Guidance is consistent with indicating a minor mid-level impulse drifting east from the southern Rockies into KS/NE on Saturday, impinging on the full latitude mid-level ridge across the Great Plains. Rather deeply mixed thermodynamic profiles with LCL heights approaching 600 mb are expected within the modified moisture return ahead of a weak surface trough/dryline. 00Z CAMs outside of the HRRR are fairly consistent in simulating convective development with the HRW-FV3 the most aggressive of the HREF members. MLCAPE should be meager at most, but a locally strong gust from the high-based, low-topped convection is possible given such large DCAPE. ..Grams.. 04/12/2024 Read more

SPC Apr 12, 2024 0600 UTC Day 2 Convective Outlook

1 year 4 months ago
SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1254 AM CDT Fri Apr 12 2024 Valid 131200Z - 141200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS IN CENTRAL OR... ...SUMMARY... Isolated severe hail is possible across central Oregon between about 2 to 8 PM MDT on Saturday. ...OR... An amplified mid/upper low just off the central CA coast will dampen as it gradually wobbles inland near the Bay Area into the Central Valley by early Sunday. The initially meridional and fast mid-level jet east of the low will weaken somewhat as it flattens to a southwesterly orientation across south CA into the eastern Great Basin. Mid-level flow will become more backed and subside somewhat across the Northwest relative to Friday. But within the exit region of the mid-level jet, inland surface cyclogenesis will occur in the northwest NV/southeast OR vicinity. To the north of this cyclone, moderate elongation of the hodograph is anticipated with a sufficient wind profile to sustain a supercell or two. 00Z CAMs are fairly consistent with this signal across the central OR vicinity. Despite MLCAPE holding at or below 500 J/kg, isolated severe hail will be possible from mid-afternoon to early evening. ...Great Lakes... Poleward low-level moisture return from the western Gulf will become more pervasive across the central states on Saturday as a surface anticyclone drifts east in the northeast Gulf. This will occur beneath an increasingly broad elevated mixed layer. By Saturday night, strengthening low-level warm theta-e advection should yield at least isolated, highly elevated convection across northern WI and parts of MI. Available CAM guidance in this time frame is generally more sparse with coverage relative to convectively parameterized guidance. It seems likely that bulk of elevated convection will remain north-northeast of capping from the elevated mixed layer until perhaps close to the end of the period. MUCAPE should largely remain weak with only modest effective shear in the cloud-bearing layer. Small hail is possible with overall thunder probabilities from 10-20 percent. ...Central Great Plains... Guidance is consistent with indicating a minor mid-level impulse drifting east from the southern Rockies into KS/NE on Saturday, impinging on the full latitude mid-level ridge across the Great Plains. Rather deeply mixed thermodynamic profiles with LCL heights approaching 600 mb are expected within the modified moisture return ahead of a weak surface trough/dryline. 00Z CAMs outside of the HRRR are fairly consistent in simulating convective development with the HRW-FV3 the most aggressive of the HREF members. MLCAPE should be meager at most, but a locally strong gust from the high-based, low-topped convection is possible given such large DCAPE. ..Grams.. 04/12/2024 Read more

SPC MD 427

1 year 4 months ago
MD 0427 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR NORTHEAST NORTH CAROLINA...SOUTHEAST VIRGINIA
Mesoscale Discussion 0427 NWS Storm Prediction Center Norman OK 1036 PM CDT Thu Apr 11 2024 Areas affected...Northeast North Carolina...Southeast Virginia Concerning...Severe potential...Watch unlikely Valid 120336Z - 120600Z Probability of Watch Issuance...20 percent SUMMARY...An isolated severe threat may continue for a few more hours across parts of northeastern North Carolina and southeast Virginia. The threat should be too marginal for weather watch issuance. DISCUSSION...An upper-level trough is currently moving through the southern Appalachians according to water vapor imagery. Ahead of the trough, the RAP is analyzing a 60 to 70 knot low-level jet from eastern North Carolina into southeastern Virginia. Thunderstorms are developing to the west of the low-level jet in a strongly sheared environment, where 0-6 km shear is 50 to 60 knots and 0-3 km storm-relative helicity is around 350 m2/s2, according to the Raleigh WSR-88D VWP. This should support an isolated tornado threat with low-topped supercells. An isolated wind-damage threat will also be possible. However, the storms will continue to move northeastward toward the coast where instability is considerably weaker. The boundary layer will also continue to cool contributing to a more stable airmass. This should result in a severe threat becoming more marginal with time. ..Broyles/Thompson.. 04/12/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...AKQ...MHX...RAH... LAT...LON 36957584 37187643 36857723 36257799 35827838 35587837 35397817 35307780 35397698 35757626 36067583 36437566 36957584 Read more

SPC Apr 12, 2024 0600 UTC Day 1 Convective Outlook

1 year 4 months ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1225 AM CDT Fri Apr 12 2024 Valid 121200Z - 131200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE NORTHERN INTER MOUNTAIN REGION... ...SUMMARY... A few marginally severe wind gusts and hail are possible over northern Nevada, eastern Oregon, and western Idaho during the late afternoon to early evening. ...Northern Inter Mountain Region... Upper low is forecast to settle southeast toward the northern CA Coast late in the day1 period. This evolution will ensure short-wave ridging holds across the northern Rockies, effectively suppressing any appreciable large-scale ascent. Even so, some moistening is expected across this region, albeit meager, as meridional flow across northern CA/eastern OR will encourage PW values to exceed 0.50 inch within a warm-advection regime. Latest model guidance suggests some boundary-layer heating will contribute to weak buoyancy within a strongly sheared environment. Isolated-scattered convection is expected to develop across northwestern NV/eastern OR extending into the northern Rockies of western MT by late afternoon. Forecast soundings suggest gusty winds may accompany some of this convection, and marginally severe hail may also be noted with the most robust updrafts. Boundary-layer cooling should result in weakening convection during the mid-evening hours. ..Darrow/Lyons.. 04/12/2024 Read more

SPC Apr 12, 2024 0600 UTC Day 1 Convective Outlook

1 year 4 months ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1225 AM CDT Fri Apr 12 2024 Valid 121200Z - 131200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE NORTHERN INTER MOUNTAIN REGION... ...SUMMARY... A few marginally severe wind gusts and hail are possible over northern Nevada, eastern Oregon, and western Idaho during the late afternoon to early evening. ...Northern Inter Mountain Region... Upper low is forecast to settle southeast toward the northern CA Coast late in the day1 period. This evolution will ensure short-wave ridging holds across the northern Rockies, effectively suppressing any appreciable large-scale ascent. Even so, some moistening is expected across this region, albeit meager, as meridional flow across northern CA/eastern OR will encourage PW values to exceed 0.50 inch within a warm-advection regime. Latest model guidance suggests some boundary-layer heating will contribute to weak buoyancy within a strongly sheared environment. Isolated-scattered convection is expected to develop across northwestern NV/eastern OR extending into the northern Rockies of western MT by late afternoon. Forecast soundings suggest gusty winds may accompany some of this convection, and marginally severe hail may also be noted with the most robust updrafts. Boundary-layer cooling should result in weakening convection during the mid-evening hours. ..Darrow/Lyons.. 04/12/2024 Read more

SPC Apr 12, 2024 0600 UTC Day 1 Convective Outlook

1 year 4 months ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1225 AM CDT Fri Apr 12 2024 Valid 121200Z - 131200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE NORTHERN INTER MOUNTAIN REGION... ...SUMMARY... A few marginally severe wind gusts and hail are possible over northern Nevada, eastern Oregon, and western Idaho during the late afternoon to early evening. ...Northern Inter Mountain Region... Upper low is forecast to settle southeast toward the northern CA Coast late in the day1 period. This evolution will ensure short-wave ridging holds across the northern Rockies, effectively suppressing any appreciable large-scale ascent. Even so, some moistening is expected across this region, albeit meager, as meridional flow across northern CA/eastern OR will encourage PW values to exceed 0.50 inch within a warm-advection regime. Latest model guidance suggests some boundary-layer heating will contribute to weak buoyancy within a strongly sheared environment. Isolated-scattered convection is expected to develop across northwestern NV/eastern OR extending into the northern Rockies of western MT by late afternoon. Forecast soundings suggest gusty winds may accompany some of this convection, and marginally severe hail may also be noted with the most robust updrafts. Boundary-layer cooling should result in weakening convection during the mid-evening hours. ..Darrow/Lyons.. 04/12/2024 Read more

SPC Apr 12, 2024 0600 UTC Day 1 Convective Outlook

1 year 4 months ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1225 AM CDT Fri Apr 12 2024 Valid 121200Z - 131200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE NORTHERN INTER MOUNTAIN REGION... ...SUMMARY... A few marginally severe wind gusts and hail are possible over northern Nevada, eastern Oregon, and western Idaho during the late afternoon to early evening. ...Northern Inter Mountain Region... Upper low is forecast to settle southeast toward the northern CA Coast late in the day1 period. This evolution will ensure short-wave ridging holds across the northern Rockies, effectively suppressing any appreciable large-scale ascent. Even so, some moistening is expected across this region, albeit meager, as meridional flow across northern CA/eastern OR will encourage PW values to exceed 0.50 inch within a warm-advection regime. Latest model guidance suggests some boundary-layer heating will contribute to weak buoyancy within a strongly sheared environment. Isolated-scattered convection is expected to develop across northwestern NV/eastern OR extending into the northern Rockies of western MT by late afternoon. Forecast soundings suggest gusty winds may accompany some of this convection, and marginally severe hail may also be noted with the most robust updrafts. Boundary-layer cooling should result in weakening convection during the mid-evening hours. ..Darrow/Lyons.. 04/12/2024 Read more

SPC Apr 12, 2024 0600 UTC Day 1 Convective Outlook

1 year 4 months ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1225 AM CDT Fri Apr 12 2024 Valid 121200Z - 131200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE NORTHERN INTER MOUNTAIN REGION... ...SUMMARY... A few marginally severe wind gusts and hail are possible over northern Nevada, eastern Oregon, and western Idaho during the late afternoon to early evening. ...Northern Inter Mountain Region... Upper low is forecast to settle southeast toward the northern CA Coast late in the day1 period. This evolution will ensure short-wave ridging holds across the northern Rockies, effectively suppressing any appreciable large-scale ascent. Even so, some moistening is expected across this region, albeit meager, as meridional flow across northern CA/eastern OR will encourage PW values to exceed 0.50 inch within a warm-advection regime. Latest model guidance suggests some boundary-layer heating will contribute to weak buoyancy within a strongly sheared environment. Isolated-scattered convection is expected to develop across northwestern NV/eastern OR extending into the northern Rockies of western MT by late afternoon. Forecast soundings suggest gusty winds may accompany some of this convection, and marginally severe hail may also be noted with the most robust updrafts. Boundary-layer cooling should result in weakening convection during the mid-evening hours. ..Darrow/Lyons.. 04/12/2024 Read more

SPC Apr 12, 2024 0600 UTC Day 1 Convective Outlook

1 year 4 months ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1225 AM CDT Fri Apr 12 2024 Valid 121200Z - 131200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE NORTHERN INTER MOUNTAIN REGION... ...SUMMARY... A few marginally severe wind gusts and hail are possible over northern Nevada, eastern Oregon, and western Idaho during the late afternoon to early evening. ...Northern Inter Mountain Region... Upper low is forecast to settle southeast toward the northern CA Coast late in the day1 period. This evolution will ensure short-wave ridging holds across the northern Rockies, effectively suppressing any appreciable large-scale ascent. Even so, some moistening is expected across this region, albeit meager, as meridional flow across northern CA/eastern OR will encourage PW values to exceed 0.50 inch within a warm-advection regime. Latest model guidance suggests some boundary-layer heating will contribute to weak buoyancy within a strongly sheared environment. Isolated-scattered convection is expected to develop across northwestern NV/eastern OR extending into the northern Rockies of western MT by late afternoon. Forecast soundings suggest gusty winds may accompany some of this convection, and marginally severe hail may also be noted with the most robust updrafts. Boundary-layer cooling should result in weakening convection during the mid-evening hours. ..Darrow/Lyons.. 04/12/2024 Read more

SPC Apr 12, 2024 0600 UTC Day 1 Convective Outlook

1 year 4 months ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1225 AM CDT Fri Apr 12 2024 Valid 121200Z - 131200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE NORTHERN INTER MOUNTAIN REGION... ...SUMMARY... A few marginally severe wind gusts and hail are possible over northern Nevada, eastern Oregon, and western Idaho during the late afternoon to early evening. ...Northern Inter Mountain Region... Upper low is forecast to settle southeast toward the northern CA Coast late in the day1 period. This evolution will ensure short-wave ridging holds across the northern Rockies, effectively suppressing any appreciable large-scale ascent. Even so, some moistening is expected across this region, albeit meager, as meridional flow across northern CA/eastern OR will encourage PW values to exceed 0.50 inch within a warm-advection regime. Latest model guidance suggests some boundary-layer heating will contribute to weak buoyancy within a strongly sheared environment. Isolated-scattered convection is expected to develop across northwestern NV/eastern OR extending into the northern Rockies of western MT by late afternoon. Forecast soundings suggest gusty winds may accompany some of this convection, and marginally severe hail may also be noted with the most robust updrafts. Boundary-layer cooling should result in weakening convection during the mid-evening hours. ..Darrow/Lyons.. 04/12/2024 Read more

SPC Tornado Watch 107 Status Reports

1 year 4 months ago
WW 0107 Status Updates
STATUS REPORT ON WW 107 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..LYONS..04/12/24 ATTN...WFO...LWX...AKQ... STATUS REPORT FOR WT 107 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS VAC003-007-047-049-065-075-079-109-111-113-117-135-137-145-147- 177-540-630-120340- VA . VIRGINIA COUNTIES INCLUDED ARE ALBEMARLE AMELIA CULPEPER CUMBERLAND FLUVANNA GOOCHLAND GREENE LOUISA LUNENBURG MADISON MECKLENBURG NOTTOWAY ORANGE POWHATAN PRINCE EDWARD SPOTSYLVANIA VIRGINIA INDEPENDENT CITIES INCLUDED ARE CHARLOTTESVILLE FREDERICKSBURG THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

SPC Tornado Watch 107 Status Reports

1 year 4 months ago
WW 0107 Status Updates
STATUS REPORT ON WW 107 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..LYONS..04/12/24 ATTN...WFO...LWX...AKQ... STATUS REPORT FOR WT 107 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS VAC003-007-047-049-065-075-079-109-111-113-117-135-137-145-147- 177-540-630-120340- VA . VIRGINIA COUNTIES INCLUDED ARE ALBEMARLE AMELIA CULPEPER CUMBERLAND FLUVANNA GOOCHLAND GREENE LOUISA LUNENBURG MADISON MECKLENBURG NOTTOWAY ORANGE POWHATAN PRINCE EDWARD SPOTSYLVANIA VIRGINIA INDEPENDENT CITIES INCLUDED ARE CHARLOTTESVILLE FREDERICKSBURG THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

SPC Tornado Watch 107 Status Reports

1 year 4 months ago
WW 0107 Status Updates
STATUS REPORT ON WW 107 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..LYONS..04/12/24 ATTN...WFO...LWX...AKQ... STATUS REPORT FOR WT 107 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS VAC003-007-047-049-065-075-079-109-111-113-117-135-137-145-147- 177-540-630-120340- VA . VIRGINIA COUNTIES INCLUDED ARE ALBEMARLE AMELIA CULPEPER CUMBERLAND FLUVANNA GOOCHLAND GREENE LOUISA LUNENBURG MADISON MECKLENBURG NOTTOWAY ORANGE POWHATAN PRINCE EDWARD SPOTSYLVANIA VIRGINIA INDEPENDENT CITIES INCLUDED ARE CHARLOTTESVILLE FREDERICKSBURG THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

SPC Tornado Watch 107

1 year 4 months ago
WW 107 TORNADO VA 120205Z - 120500Z
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 107 NWS Storm Prediction Center Norman OK 1005 PM EDT Thu Apr 11 2024 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Central Virginia * Effective this Thursday night and Friday morning from 1005 PM until 100 AM EDT. * Primary threats include... A couple tornadoes possible Isolated damaging wind gusts to 65 mph possible SUMMARY...A line of storms with a history of wind damage will spread northeastward for the next 2-3 hours before weakening. A couple of tornadoes will also be possible with embedded circulations in the line. The tornado watch area is approximately along and 30 statute miles east and west of a line from 30 miles east northeast of Charlottesville VA to 60 miles south southwest of Charlottesville VA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. && OTHER WATCH INFORMATION...CONTINUE...WW 106... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0.5 inches. Extreme turbulence and surface wind gusts to 55 knots. A few cumulonimbi with maximum tops to 400. Mean storm motion vector 22040. ...Thompson Read more

SPC Tornado Watch 106 Status Reports

1 year 4 months ago
WW 0106 Status Updates
STATUS REPORT ON WW 106 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 E DAN TO 15 ENE DAN TO 25 SSW SHD. WW 106 WILL BE ALLOWED TO EXPIRE AT 120300Z. ..LYONS..04/12/24 ATTN...WFO...GSP...RNK...RAH... STATUS REPORT FOR WT 106 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS VAC011-029-037-083-120300- VA . VIRGINIA COUNTIES INCLUDED ARE APPOMATTOX BUCKINGHAM CHARLOTTE HALIFAX THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

SPC Tornado Watch 106 Status Reports

1 year 4 months ago
WW 0106 Status Updates
STATUS REPORT ON WW 106 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 E DAN TO 15 ENE DAN TO 25 SSW SHD. WW 106 WILL BE ALLOWED TO EXPIRE AT 120300Z. ..LYONS..04/12/24 ATTN...WFO...GSP...RNK...RAH... STATUS REPORT FOR WT 106 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS VAC011-029-037-083-120300- VA . VIRGINIA COUNTIES INCLUDED ARE APPOMATTOX BUCKINGHAM CHARLOTTE HALIFAX THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

SPC Tornado Watch 106 Status Reports

1 year 4 months ago
WW 0106 Status Updates
STATUS REPORT ON WW 106 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 E DAN TO 15 ENE DAN TO 25 SSW SHD. WW 106 WILL BE ALLOWED TO EXPIRE AT 120300Z. ..LYONS..04/12/24 ATTN...WFO...GSP...RNK...RAH... STATUS REPORT FOR WT 106 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS VAC011-029-037-083-120300- VA . VIRGINIA COUNTIES INCLUDED ARE APPOMATTOX BUCKINGHAM CHARLOTTE HALIFAX THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more