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WW 0472 Status Updates
STATUS FOR WATCH 0472 HAS NOT BEEN ISSUED YET Read more

WW 472 SEVERE TSTM MA RI CW 270155Z - 270600Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 472 NWS Storm Prediction Center Norman OK 955 PM EDT Wed Jun 26 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and Eastern Massachusetts Rhode Island Coastal Waters * Effective this Wednesday night and Thursday morning from 955 PM until 200 AM EDT. * Primary threats include... Scattered damaging wind gusts to 65 mph possible SUMMARY...An organized squall line will continue east-northeast across southern New England through the late evening and early overnight. Widely scattered strong to severe gusts (50-65 mph) will be possible with the more intense thunderstorm cores and embedded surges in the squall line. The severe thunderstorm watch area is approximately along and 45 statute miles north and south of a line from 40 miles southwest of Worcester MA to 15 miles east southeast of New Bedford MA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU2). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for 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. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 467...WW 468...WW 469...WW 470...WW 471... AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 55 knots. A few cumulonimbi with maximum tops to 400. Mean storm motion vector 24045. ...Smith Read more

WW 0471 Status Updates
STATUS REPORT ON WW 471 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 S MRB TO 30 NW DCA TO 35 SSW CXY. ..GOSS..06/27/24 ATTN...WFO...LWX...PHI... STATUS REPORT FOR WS 471 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS DCC001-270240- DC . DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE DISTRICT OF COLUMBIA MDC003-005-009-011-013-015-017-025-027-029-031-033-035-041-510- 270240- MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL BALTIMORE CALVERT CAROLINE CARROLL CECIL CHARLES HARFORD HOWARD KENT MONTGOMERY PRINCE GEORGES QUEEN ANNE'S TALBOT MARYLAND INDEPENDENT CITIES INCLUDED ARE BALTIMORE CITY Read more

WW 0469 Status Updates
STATUS REPORT ON WW 469 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 W ABE TO 25 N EWR TO 10 SSE POU TO 25 SSW PSF. ..GOSS..06/27/24 ATTN...WFO...OKX...BOX...ALY...PHI... STATUS REPORT FOR WS 469 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS CTC001-003-005-007-009-011-013-015-270240- CT . CONNECTICUT COUNTIES INCLUDED ARE FAIRFIELD HARTFORD LITCHFIELD MIDDLESEX NEW HAVEN NEW LONDON TOLLAND WINDHAM NJC003-005-007-013-015-017-019-021-023-025-027-029-031-035-039- 041-270240- NJ . NEW JERSEY COUNTIES INCLUDED ARE BERGEN BURLINGTON CAMDEN ESSEX GLOUCESTER HUDSON HUNTERDON MERCER MIDDLESEX MONMOUTH MORRIS OCEAN PASSAIC SOMERSET UNION WARREN NYC005-047-059-061-081-085-087-103-119-270240- Read more

WW 0467 Status Updates
STATUS REPORT ON WW 467 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNW LOZ TO 15 N JKL TO 30 S PKB TO 30 SSE LBE. ..GOSS..06/27/24 ATTN...WFO...JKL...RLX...PBZ... STATUS REPORT FOR WS 467 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KYC025-051-071-095-109-115-119-121-125-127-131-133-153-159-189- 193-195-199-203-270240- KY . KENTUCKY COUNTIES INCLUDED ARE BREATHITT CLAY FLOYD HARLAN JACKSON JOHNSON KNOTT KNOX LAUREL LAWRENCE LESLIE LETCHER MAGOFFIN MARTIN OWSLEY PERRY PIKE PULASKI ROCKCASTLE VAC027-051-270240- VA . VIRGINIA COUNTIES INCLUDED ARE BUCHANAN DICKENSON WVC001-005-007-011-013-015-019-021-033-035-039-041-043-045-047- 049-059-067-075-077-079-081-083-087-091-093-097-099-101-109- Read more

WW 0467 Status Updates
STATUS REPORT ON WW 467 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNW LOZ TO 15 N JKL TO 30 S PKB TO 30 SSE LBE. ..GOSS..06/27/24 ATTN...WFO...JKL...RLX...PBZ... STATUS REPORT FOR WS 467 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KYC025-051-071-095-109-115-119-121-125-127-131-133-153-159-189- 193-195-199-203-270240- KY . KENTUCKY COUNTIES INCLUDED ARE BREATHITT CLAY FLOYD HARLAN JACKSON JOHNSON KNOTT KNOX LAUREL LAWRENCE LESLIE LETCHER MAGOFFIN MARTIN OWSLEY PERRY PIKE PULASKI ROCKCASTLE VAC027-051-270240- VA . VIRGINIA COUNTIES INCLUDED ARE BUCHANAN DICKENSON WVC001-005-007-011-013-015-019-021-033-035-039-041-043-045-047- 049-059-067-075-077-079-081-083-087-091-093-097-099-101-109- Read more

WW 0467 Status Updates
STATUS REPORT ON WW 467 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNW LOZ TO 15 N JKL TO 30 S PKB TO 30 SSE LBE. ..GOSS..06/27/24 ATTN...WFO...JKL...RLX...PBZ... STATUS REPORT FOR WS 467 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KYC025-051-071-095-109-115-119-121-125-127-131-133-153-159-189- 193-195-199-203-270240- KY . KENTUCKY COUNTIES INCLUDED ARE BREATHITT CLAY FLOYD HARLAN JACKSON JOHNSON KNOTT KNOX LAUREL LAWRENCE LESLIE LETCHER MAGOFFIN MARTIN OWSLEY PERRY PIKE PULASKI ROCKCASTLE VAC027-051-270240- VA . VIRGINIA COUNTIES INCLUDED ARE BUCHANAN DICKENSON WVC001-005-007-011-013-015-019-021-033-035-039-041-043-045-047- 049-059-067-075-077-079-081-083-087-091-093-097-099-101-109- Read more

WW 0467 Status Updates
STATUS REPORT ON WW 467 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNW LOZ TO 15 N JKL TO 30 S PKB TO 30 SSE LBE. ..GOSS..06/27/24 ATTN...WFO...JKL...RLX...PBZ... STATUS REPORT FOR WS 467 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KYC025-051-071-095-109-115-119-121-125-127-131-133-153-159-189- 193-195-199-203-270240- KY . KENTUCKY COUNTIES INCLUDED ARE BREATHITT CLAY FLOYD HARLAN JACKSON JOHNSON KNOTT KNOX LAUREL LAWRENCE LESLIE LETCHER MAGOFFIN MARTIN OWSLEY PERRY PIKE PULASKI ROCKCASTLE VAC027-051-270240- VA . VIRGINIA COUNTIES INCLUDED ARE BUCHANAN DICKENSON WVC001-005-007-011-013-015-019-021-033-035-039-041-043-045-047- 049-059-067-075-077-079-081-083-087-091-093-097-099-101-109- Read more

WW 467 SEVERE TSTM KY OH PA VA WV 262030Z - 270200Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 467 NWS Storm Prediction Center Norman OK 430 PM EDT Wed Jun 26 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Eastern Kentucky Southeast Ohio Southwest Pennsylvania Southwest Virginia West Virginia * Effective this Wednesday afternoon and evening from 430 PM until 1000 PM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph likely Scattered large hail events to 1 inch in diameter possible SUMMARY...Thunderstorms are expected to increase in coverage this afternoon from southwest Pennsylvania into eastern Kentucky and track eastward across the watch area. The strongest cells will pose a risk of locally damaging wind gusts. The severe thunderstorm watch area is approximately along and 75 statute miles east and west of a line from 35 miles south of Jackson KY to 35 miles northeast of Pittsburgh PA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for 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. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 464...WW 465...WW 466... AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27030. ...Hart Read more

WW 0468 Status Updates
STATUS REPORT ON WW 468 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..WENDT..06/27/24 ATTN...WFO...BOI...PIH...MSO... STATUS REPORT FOR WS 468 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IDC001-005-011-013-015-023-025-027-037-039-045-047-053-059-063- 067-075-077-085-270240- ID . IDAHO COUNTIES INCLUDED ARE ADA BANNOCK BINGHAM BLAINE BOISE BUTTE CAMAS CANYON CUSTER ELMORE GEM GOODING JEROME LEMHI LINCOLN MINIDOKA PAYETTE POWER VALLEY 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

WW 0468 Status Updates
STATUS REPORT ON WW 468 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..WENDT..06/27/24 ATTN...WFO...BOI...PIH...MSO... STATUS REPORT FOR WS 468 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IDC001-005-011-013-015-023-025-027-037-039-045-047-053-059-063- 067-075-077-085-270240- ID . IDAHO COUNTIES INCLUDED ARE ADA BANNOCK BINGHAM BLAINE BOISE BUTTE CAMAS CANYON CUSTER ELMORE GEM GOODING JEROME LEMHI LINCOLN MINIDOKA PAYETTE POWER VALLEY 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

WW 0468 Status Updates
STATUS REPORT ON WW 468 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..WENDT..06/27/24 ATTN...WFO...BOI...PIH...MSO... STATUS REPORT FOR WS 468 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IDC001-005-011-013-015-023-025-027-037-039-045-047-053-059-063- 067-075-077-085-270240- ID . IDAHO COUNTIES INCLUDED ARE ADA BANNOCK BINGHAM BLAINE BOISE BUTTE CAMAS CANYON CUSTER ELMORE GEM GOODING JEROME LEMHI LINCOLN MINIDOKA PAYETTE POWER VALLEY 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

WW 0468 Status Updates
STATUS REPORT ON WW 468 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..WENDT..06/27/24 ATTN...WFO...BOI...PIH...MSO... STATUS REPORT FOR WS 468 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IDC001-005-011-013-015-023-025-027-037-039-045-047-053-059-063- 067-075-077-085-270240- ID . IDAHO COUNTIES INCLUDED ARE ADA BANNOCK BINGHAM BLAINE BOISE BUTTE CAMAS CANYON CUSTER ELMORE GEM GOODING JEROME LEMHI LINCOLN MINIDOKA PAYETTE POWER VALLEY 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

WW 468 SEVERE TSTM ID 262145Z - 270300Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 468 NWS Storm Prediction Center Norman OK 345 PM MDT Wed Jun 26 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southern and Central Idaho * Effective this Wednesday afternoon and evening from 345 PM until 900 PM MDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Widely scattered to scattered strong to severe thunderstorms are forecast to continue to develop this afternoon and persist into the evening across southern and central Idaho. A few of the stronger storms may evolve into weak supercells. The more intense thunderstorms will be potentially capable of severe gusts (60-70 mph) and large hail (1 to 1.5 inches in diameter). The severe thunderstorm watch area is approximately along and 85 statute miles north and south of a line from 35 miles northwest of Boise ID to 60 miles south of Monida MT. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU8). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for 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. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 464...WW 466...WW 467... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 400. Mean storm motion vector 25025. ...Smith Read more

MD 1442 CONCERNING SEVERE THUNDERSTORM WATCH 467... FOR WEST VIRGINIA/EASTERN KENTUCKY
Mesoscale Discussion 1442 NWS Storm Prediction Center Norman OK 0821 PM CDT Wed Jun 26 2024 Areas affected...West Virginia/eastern Kentucky Concerning...Severe Thunderstorm Watch 467... Valid 270121Z - 270145Z The severe weather threat for Severe Thunderstorm Watch 467 continues. SUMMARY...Local severe risk -- mainly in the form of a strong wind gust or two -- may continue for a couple more hours, but new WW issuance will not be required beyond the scheduled 27/02Z expiration of WW 467. DISCUSSION...Latest radar loop shows scattered thunderstorms ongoing across the central Appalachians region ahead of the advancing cold front. At this point, storms appear to have weakened, and should remain largely sub-severe the remainder of the evening. While some risk for a damaging gust or two may persist in the near term, threat beyond 27/02Z appears likely to be minimal -- thus not requiring new WW consideration. ..Goss.. 06/27/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LWX...RNK...PBZ...RLX...MRX...JKL... LAT...LON 37238140 36748332 37708324 39338114 39537990 39237942 38448001 37238140 Read more

WW 0470 Status Updates
STATUS REPORT ON WW 470 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1441 ..WENDT..06/27/24 ATTN...WFO...OUN...FWD... STATUS REPORT FOR WS 470 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS OKC013-033-055-057-065-067-085-095-141-270240- OK . OKLAHOMA COUNTIES INCLUDED ARE BRYAN COTTON GREER HARMON JACKSON JEFFERSON LOVE MARSHALL TILLMAN TXC077-097-147-155-181-197-337-485-487-270240- TX . TEXAS COUNTIES INCLUDED ARE CLAY COOKE FANNIN FOARD GRAYSON HARDEMAN MONTAGUE WICHITA WILBARGER 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 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0809 PM CDT Wed Jun 26 2024 Valid 270100Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE OHIO VALLEY...NORTHEAST...RED RIVER VALLEY...AND FRONT RANGE... ...SUMMARY... Clusters of thunderstorms accompanied by potentially damaging wind gusts and sporadic hail are possible into tonight from the Ohio Valley into the northern Mid Atlantic, the Red River Vicinity, and to the lee of the Front Range and Sangre de Cristo Mountains. ...01z Update Western US... An upper trough over the Western US will continue to deepen as it emerges over the Great Basin and southern Rockies while a strong ridge builds over the western High Plains. Ongoing isolated storms over parts of the eastern Great Basin have shown steady organization with a few supercell structures noted. Sufficient buoyancy and moderate deep-layer shear will be accompanied by intensifying upper-level support from the trough approaching this evening. With fairly sustained support into the early overnight period, the risk for damaging gusts and sporadic hail may continue for several more hours tonight, even as instability wanes. MRGL level-1 risk has been expanded over parts of ID, WY, UT and NV. ...Red River Valley Vicinity... Vigorous thunderstorm development has been noted along a remnant outflow boundary stretching from the TX Panhandle through the Red River Valley. South of this boundary, an oppressively warm and moist air mass is supporting large buoyancy (MLCAPE of 2500-3000 J/kg) beneath enhanced northerly flow aloft. Sufficient for supercells and organized multicell clusters, (30-35 kt EBWD) additional storm development/organization appears probable this evening despite relatively warm mid-level temperatures. Damaging winds appear to be the most likely threat, given 20+ degree temperature/dewpoint spreads and dry mid-level air. However, severe hail will also be possible with the stronger updrafts, especially any sustained rotating ones. Some upscale growth into a southward moving cluster is also possible later this evening with a risk for damaging winds into north TX. The level-2 SLGT risk area was expanded west along the Red River Valley to better encompass the threat this evening. ...Southeast US into the Northeast... Several clusters of severe thunderstorms are ongoing over parts of the Southeast, OH Valley and into the Northeast CONUS. So far this evening, these clusters have shown organization with self propagating cold pools and linear structures owing to modest, but increasing deep-layer shear beneath a broad trough over the Great Lakes. Several of these more organized clusters are ongoing near the KY/TN border, western PA southern New England. Despite the loss of diurnal heating, residual buoyancy and sufficient deep-layer shear should remain supportive of strong to severe storms this evening. Damaging gusts appear likely to remain a threat for a few more hours, though sporadic hail and a tornado or two are also possible. ...Front Range... Widely scattered clusters of strong to severe storms are ongoing from southern WY to southern CO this evening. Weak forcing for ascent from a subtle impulse rounding the top of a building ridge will gradually decrease in strength this evening. Still, relatively moist surface conditions, dewpoints in the mid to upper 50s, will likely support isolated thunderstorms into tonight. Damaging winds and isolated hail are the most likely threat, especially with any more persistent clusters. ..Lyons.. 06/27/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0809 PM CDT Wed Jun 26 2024 Valid 270100Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE OHIO VALLEY...NORTHEAST...RED RIVER VALLEY...AND FRONT RANGE... ...SUMMARY... Clusters of thunderstorms accompanied by potentially damaging wind gusts and sporadic hail are possible into tonight from the Ohio Valley into the northern Mid Atlantic, the Red River Vicinity, and to the lee of the Front Range and Sangre de Cristo Mountains. ...01z Update Western US... An upper trough over the Western US will continue to deepen as it emerges over the Great Basin and southern Rockies while a strong ridge builds over the western High Plains. Ongoing isolated storms over parts of the eastern Great Basin have shown steady organization with a few supercell structures noted. Sufficient buoyancy and moderate deep-layer shear will be accompanied by intensifying upper-level support from the trough approaching this evening. With fairly sustained support into the early overnight period, the risk for damaging gusts and sporadic hail may continue for several more hours tonight, even as instability wanes. MRGL level-1 risk has been expanded over parts of ID, WY, UT and NV. ...Red River Valley Vicinity... Vigorous thunderstorm development has been noted along a remnant outflow boundary stretching from the TX Panhandle through the Red River Valley. South of this boundary, an oppressively warm and moist air mass is supporting large buoyancy (MLCAPE of 2500-3000 J/kg) beneath enhanced northerly flow aloft. Sufficient for supercells and organized multicell clusters, (30-35 kt EBWD) additional storm development/organization appears probable this evening despite relatively warm mid-level temperatures. Damaging winds appear to be the most likely threat, given 20+ degree temperature/dewpoint spreads and dry mid-level air. However, severe hail will also be possible with the stronger updrafts, especially any sustained rotating ones. Some upscale growth into a southward moving cluster is also possible later this evening with a risk for damaging winds into north TX. The level-2 SLGT risk area was expanded west along the Red River Valley to better encompass the threat this evening. ...Southeast US into the Northeast... Several clusters of severe thunderstorms are ongoing over parts of the Southeast, OH Valley and into the Northeast CONUS. So far this evening, these clusters have shown organization with self propagating cold pools and linear structures owing to modest, but increasing deep-layer shear beneath a broad trough over the Great Lakes. Several of these more organized clusters are ongoing near the KY/TN border, western PA southern New England. Despite the loss of diurnal heating, residual buoyancy and sufficient deep-layer shear should remain supportive of strong to severe storms this evening. Damaging gusts appear likely to remain a threat for a few more hours, though sporadic hail and a tornado or two are also possible. ...Front Range... Widely scattered clusters of strong to severe storms are ongoing from southern WY to southern CO this evening. Weak forcing for ascent from a subtle impulse rounding the top of a building ridge will gradually decrease in strength this evening. Still, relatively moist surface conditions, dewpoints in the mid to upper 50s, will likely support isolated thunderstorms into tonight. Damaging winds and isolated hail are the most likely threat, especially with any more persistent clusters. ..Lyons.. 06/27/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0809 PM CDT Wed Jun 26 2024 Valid 270100Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE OHIO VALLEY...NORTHEAST...RED RIVER VALLEY...AND FRONT RANGE... ...SUMMARY... Clusters of thunderstorms accompanied by potentially damaging wind gusts and sporadic hail are possible into tonight from the Ohio Valley into the northern Mid Atlantic, the Red River Vicinity, and to the lee of the Front Range and Sangre de Cristo Mountains. ...01z Update Western US... An upper trough over the Western US will continue to deepen as it emerges over the Great Basin and southern Rockies while a strong ridge builds over the western High Plains. Ongoing isolated storms over parts of the eastern Great Basin have shown steady organization with a few supercell structures noted. Sufficient buoyancy and moderate deep-layer shear will be accompanied by intensifying upper-level support from the trough approaching this evening. With fairly sustained support into the early overnight period, the risk for damaging gusts and sporadic hail may continue for several more hours tonight, even as instability wanes. MRGL level-1 risk has been expanded over parts of ID, WY, UT and NV. ...Red River Valley Vicinity... Vigorous thunderstorm development has been noted along a remnant outflow boundary stretching from the TX Panhandle through the Red River Valley. South of this boundary, an oppressively warm and moist air mass is supporting large buoyancy (MLCAPE of 2500-3000 J/kg) beneath enhanced northerly flow aloft. Sufficient for supercells and organized multicell clusters, (30-35 kt EBWD) additional storm development/organization appears probable this evening despite relatively warm mid-level temperatures. Damaging winds appear to be the most likely threat, given 20+ degree temperature/dewpoint spreads and dry mid-level air. However, severe hail will also be possible with the stronger updrafts, especially any sustained rotating ones. Some upscale growth into a southward moving cluster is also possible later this evening with a risk for damaging winds into north TX. The level-2 SLGT risk area was expanded west along the Red River Valley to better encompass the threat this evening. ...Southeast US into the Northeast... Several clusters of severe thunderstorms are ongoing over parts of the Southeast, OH Valley and into the Northeast CONUS. So far this evening, these clusters have shown organization with self propagating cold pools and linear structures owing to modest, but increasing deep-layer shear beneath a broad trough over the Great Lakes. Several of these more organized clusters are ongoing near the KY/TN border, western PA southern New England. Despite the loss of diurnal heating, residual buoyancy and sufficient deep-layer shear should remain supportive of strong to severe storms this evening. Damaging gusts appear likely to remain a threat for a few more hours, though sporadic hail and a tornado or two are also possible. ...Front Range... Widely scattered clusters of strong to severe storms are ongoing from southern WY to southern CO this evening. Weak forcing for ascent from a subtle impulse rounding the top of a building ridge will gradually decrease in strength this evening. Still, relatively moist surface conditions, dewpoints in the mid to upper 50s, will likely support isolated thunderstorms into tonight. Damaging winds and isolated hail are the most likely threat, especially with any more persistent clusters. ..Lyons.. 06/27/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0809 PM CDT Wed Jun 26 2024 Valid 270100Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE OHIO VALLEY...NORTHEAST...RED RIVER VALLEY...AND FRONT RANGE... ...SUMMARY... Clusters of thunderstorms accompanied by potentially damaging wind gusts and sporadic hail are possible into tonight from the Ohio Valley into the northern Mid Atlantic, the Red River Vicinity, and to the lee of the Front Range and Sangre de Cristo Mountains. ...01z Update Western US... An upper trough over the Western US will continue to deepen as it emerges over the Great Basin and southern Rockies while a strong ridge builds over the western High Plains. Ongoing isolated storms over parts of the eastern Great Basin have shown steady organization with a few supercell structures noted. Sufficient buoyancy and moderate deep-layer shear will be accompanied by intensifying upper-level support from the trough approaching this evening. With fairly sustained support into the early overnight period, the risk for damaging gusts and sporadic hail may continue for several more hours tonight, even as instability wanes. MRGL level-1 risk has been expanded over parts of ID, WY, UT and NV. ...Red River Valley Vicinity... Vigorous thunderstorm development has been noted along a remnant outflow boundary stretching from the TX Panhandle through the Red River Valley. South of this boundary, an oppressively warm and moist air mass is supporting large buoyancy (MLCAPE of 2500-3000 J/kg) beneath enhanced northerly flow aloft. Sufficient for supercells and organized multicell clusters, (30-35 kt EBWD) additional storm development/organization appears probable this evening despite relatively warm mid-level temperatures. Damaging winds appear to be the most likely threat, given 20+ degree temperature/dewpoint spreads and dry mid-level air. However, severe hail will also be possible with the stronger updrafts, especially any sustained rotating ones. Some upscale growth into a southward moving cluster is also possible later this evening with a risk for damaging winds into north TX. The level-2 SLGT risk area was expanded west along the Red River Valley to better encompass the threat this evening. ...Southeast US into the Northeast... Several clusters of severe thunderstorms are ongoing over parts of the Southeast, OH Valley and into the Northeast CONUS. So far this evening, these clusters have shown organization with self propagating cold pools and linear structures owing to modest, but increasing deep-layer shear beneath a broad trough over the Great Lakes. Several of these more organized clusters are ongoing near the KY/TN border, western PA southern New England. Despite the loss of diurnal heating, residual buoyancy and sufficient deep-layer shear should remain supportive of strong to severe storms this evening. Damaging gusts appear likely to remain a threat for a few more hours, though sporadic hail and a tornado or two are also possible. ...Front Range... Widely scattered clusters of strong to severe storms are ongoing from southern WY to southern CO this evening. Weak forcing for ascent from a subtle impulse rounding the top of a building ridge will gradually decrease in strength this evening. Still, relatively moist surface conditions, dewpoints in the mid to upper 50s, will likely support isolated thunderstorms into tonight. Damaging winds and isolated hail are the most likely threat, especially with any more persistent clusters. ..Lyons.. 06/27/2024 Read more