Severe Storms

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0805 PM CDT Sun Jun 30 2024 Valid 010100Z - 011200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR PORTIONS OF THE MID-ATLANTIC AND PARTS OF CENTRAL/EASTERN MONTANA AND FAR WESTERN NORTH DAKOTA... ...SUMMARY... Scattered storms capable of wind damage will continue for a few more hours in parts of the Mid-Atlantic. Isolated large hail and severe/damaging winds remain possible this evening in parts of central/eastern Montana into perhaps far western North Dakota. ...Mid-Atlantic... Convection has largely moved offshore, though scattered storms still remain across parts of the Mid-Atlantic. Modest mid-level lapse rates and around 35-40 kts of effective shear (sampled by the 00Z IAD sounding) suggest damaging wind gusts and isolated large hail will remain possible into at least the mid evening. ...Montana/western North Dakota... A mid-level trough continues to move across the northern Rockies. Convection continues to develop within the terrain areas of western Montana. Storms have generally struggled to maintain intensity, however. MLCIN remains present in eastern Montana and western North Dakota. The overall longevity of convection, as well as coverage, remains uncertain. An increase in the low-level jet this evening could help maintain some activity into the mid/late evening. Severe/damaging winds and isolated large hail are the main risks. ...Central High Plains Vicinity... Continued stronger flow across the Rockies around the upper-level ridge will continue to foster scattered strong to severe storms this evening. The strongest storms will likely be in parts of eastern Colorado where low 60s F dewpoints remain. Large hail and severe winds are possible with this activity. ...Arizona... Scattered storms have developed within an area of strong heating in southeastern Arizona. An MCV evident on visible satellite also has likely aided in convective development and modest organization this afternoon/evening. A few strong/severe wind gusts remain possible. Convection/outflow may try to push westward toward Phoenix where temperatures remain in the low 100s F. ..Wendt.. 07/01/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0805 PM CDT Sun Jun 30 2024 Valid 010100Z - 011200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR PORTIONS OF THE MID-ATLANTIC AND PARTS OF CENTRAL/EASTERN MONTANA AND FAR WESTERN NORTH DAKOTA... ...SUMMARY... Scattered storms capable of wind damage will continue for a few more hours in parts of the Mid-Atlantic. Isolated large hail and severe/damaging winds remain possible this evening in parts of central/eastern Montana into perhaps far western North Dakota. ...Mid-Atlantic... Convection has largely moved offshore, though scattered storms still remain across parts of the Mid-Atlantic. Modest mid-level lapse rates and around 35-40 kts of effective shear (sampled by the 00Z IAD sounding) suggest damaging wind gusts and isolated large hail will remain possible into at least the mid evening. ...Montana/western North Dakota... A mid-level trough continues to move across the northern Rockies. Convection continues to develop within the terrain areas of western Montana. Storms have generally struggled to maintain intensity, however. MLCIN remains present in eastern Montana and western North Dakota. The overall longevity of convection, as well as coverage, remains uncertain. An increase in the low-level jet this evening could help maintain some activity into the mid/late evening. Severe/damaging winds and isolated large hail are the main risks. ...Central High Plains Vicinity... Continued stronger flow across the Rockies around the upper-level ridge will continue to foster scattered strong to severe storms this evening. The strongest storms will likely be in parts of eastern Colorado where low 60s F dewpoints remain. Large hail and severe winds are possible with this activity. ...Arizona... Scattered storms have developed within an area of strong heating in southeastern Arizona. An MCV evident on visible satellite also has likely aided in convective development and modest organization this afternoon/evening. A few strong/severe wind gusts remain possible. Convection/outflow may try to push westward toward Phoenix where temperatures remain in the low 100s F. ..Wendt.. 07/01/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0805 PM CDT Sun Jun 30 2024 Valid 010100Z - 011200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR PORTIONS OF THE MID-ATLANTIC AND PARTS OF CENTRAL/EASTERN MONTANA AND FAR WESTERN NORTH DAKOTA... ...SUMMARY... Scattered storms capable of wind damage will continue for a few more hours in parts of the Mid-Atlantic. Isolated large hail and severe/damaging winds remain possible this evening in parts of central/eastern Montana into perhaps far western North Dakota. ...Mid-Atlantic... Convection has largely moved offshore, though scattered storms still remain across parts of the Mid-Atlantic. Modest mid-level lapse rates and around 35-40 kts of effective shear (sampled by the 00Z IAD sounding) suggest damaging wind gusts and isolated large hail will remain possible into at least the mid evening. ...Montana/western North Dakota... A mid-level trough continues to move across the northern Rockies. Convection continues to develop within the terrain areas of western Montana. Storms have generally struggled to maintain intensity, however. MLCIN remains present in eastern Montana and western North Dakota. The overall longevity of convection, as well as coverage, remains uncertain. An increase in the low-level jet this evening could help maintain some activity into the mid/late evening. Severe/damaging winds and isolated large hail are the main risks. ...Central High Plains Vicinity... Continued stronger flow across the Rockies around the upper-level ridge will continue to foster scattered strong to severe storms this evening. The strongest storms will likely be in parts of eastern Colorado where low 60s F dewpoints remain. Large hail and severe winds are possible with this activity. ...Arizona... Scattered storms have developed within an area of strong heating in southeastern Arizona. An MCV evident on visible satellite also has likely aided in convective development and modest organization this afternoon/evening. A few strong/severe wind gusts remain possible. Convection/outflow may try to push westward toward Phoenix where temperatures remain in the low 100s F. ..Wendt.. 07/01/2024 Read more

WW 0492 Status Updates
STATUS REPORT ON WW 492 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SE BTM TO 25 WSW 3HT TO 30 W LWT. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1501 ..WEINMAN..07/01/24 ATTN...WFO...TFX...BYZ... STATUS REPORT FOR WS 492 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MTC027-031-037-045-057-065-067-095-097-107-111-010140- MT . MONTANA COUNTIES INCLUDED ARE FERGUS GALLATIN GOLDEN VALLEY JUDITH BASIN MADISON MUSSELSHELL PARK STILLWATER SWEET GRASS WHEATLAND YELLOWSTONE 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 0491 Status Updates
STATUS REPORT ON WW 491 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NE RDU TO 35 SE CHO TO 15 NNW CHO. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1500 ..WEINMAN..07/01/24 ATTN...WFO...LWX...PHI...AKQ...RAH...RNK... STATUS REPORT FOR WS 491 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS DEC001-005-010140- DE . DELAWARE COUNTIES INCLUDED ARE KENT SUSSEX DCC001-010140- DC . DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE DISTRICT OF COLUMBIA MDC003-005-009-011-013-015-017-019-021-025-027-029-031-033-035- 037-039-041-045-047-510-010140- MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL BALTIMORE CALVERT Read more

WW 0491 Status Updates
STATUS REPORT ON WW 491 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NE RDU TO 35 SE CHO TO 15 NNW CHO. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1500 ..WEINMAN..07/01/24 ATTN...WFO...LWX...PHI...AKQ...RAH...RNK... STATUS REPORT FOR WS 491 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS DEC001-005-010140- DE . DELAWARE COUNTIES INCLUDED ARE KENT SUSSEX DCC001-010140- DC . DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE DISTRICT OF COLUMBIA MDC003-005-009-011-013-015-017-019-021-025-027-029-031-033-035- 037-039-041-045-047-510-010140- MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL BALTIMORE CALVERT Read more

WW 0491 Status Updates
STATUS REPORT ON WW 491 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NE RDU TO 35 SE CHO TO 15 NNW CHO. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1500 ..WEINMAN..07/01/24 ATTN...WFO...LWX...PHI...AKQ...RAH...RNK... STATUS REPORT FOR WS 491 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS DEC001-005-010140- DE . DELAWARE COUNTIES INCLUDED ARE KENT SUSSEX DCC001-010140- DC . DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE DISTRICT OF COLUMBIA MDC003-005-009-011-013-015-017-019-021-025-027-029-031-033-035- 037-039-041-045-047-510-010140- MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL BALTIMORE CALVERT Read more

WW 0491 Status Updates
STATUS REPORT ON WW 491 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NE RDU TO 35 SE CHO TO 15 NNW CHO. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1500 ..WEINMAN..07/01/24 ATTN...WFO...LWX...PHI...AKQ...RAH...RNK... STATUS REPORT FOR WS 491 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS DEC001-005-010140- DE . DELAWARE COUNTIES INCLUDED ARE KENT SUSSEX DCC001-010140- DC . DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE DISTRICT OF COLUMBIA MDC003-005-009-011-013-015-017-019-021-025-027-029-031-033-035- 037-039-041-045-047-510-010140- MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL BALTIMORE CALVERT Read more

WW 0491 Status Updates
STATUS REPORT ON WW 491 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NE RDU TO 35 SE CHO TO 15 NNW CHO. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1500 ..WEINMAN..07/01/24 ATTN...WFO...LWX...PHI...AKQ...RAH...RNK... STATUS REPORT FOR WS 491 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS DEC001-005-010140- DE . DELAWARE COUNTIES INCLUDED ARE KENT SUSSEX DCC001-010140- DC . DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE DISTRICT OF COLUMBIA MDC003-005-009-011-013-015-017-019-021-025-027-029-031-033-035- 037-039-041-045-047-510-010140- MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL BALTIMORE CALVERT Read more

WW 0491 Status Updates
STATUS REPORT ON WW 491 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NE RDU TO 35 SE CHO TO 15 NNW CHO. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1500 ..WEINMAN..07/01/24 ATTN...WFO...LWX...PHI...AKQ...RAH...RNK... STATUS REPORT FOR WS 491 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS DEC001-005-010140- DE . DELAWARE COUNTIES INCLUDED ARE KENT SUSSEX DCC001-010140- DC . DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE DISTRICT OF COLUMBIA MDC003-005-009-011-013-015-017-019-021-025-027-029-031-033-035- 037-039-041-045-047-510-010140- MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL BALTIMORE CALVERT Read more

WW 491 SEVERE TSTM DC DE MD NC NJ VA CW 301920Z - 010300Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 491 NWS Storm Prediction Center Norman OK 320 PM EDT Sun Jun 30 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of District Of Columbia Central and Southern Delaware Central and Eastern Maryland Northern North Carolina Southern New Jersey Northern, Central, and Eastern Virginia Coastal Waters * Effective this Sunday afternoon and evening from 320 PM until 1100 PM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph likely Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Thunderstorms are expected to continue developing while posing a threat for mainly scattered damaging winds as they move east-southeastward this afternoon and evening. The strongest gusts may reach 55-70 mph on a localized basis. Isolated hail up to 1-1.5 inches in diameter may also occur with the strongest thunderstorms. The severe thunderstorm watch area is approximately along and 90 statute miles east and west of a line from 40 miles north northwest of Dover DE to 15 miles southeast of Roanoke Rapids NC. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). 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 489...WW 490... 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 500. Mean storm motion vector 28030. ...Gleason Read more

WW 0490 Status Updates
STATUS REPORT ON WW 490 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW EEN TO 10 ESE AUG TO 50 S HUL. ..WEINMAN..06/30/24 ATTN...WFO...GYX...CAR...BTV... STATUS REPORT FOR WS 490 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MEC001-005-009-013-015-023-027-029-031-302240- ME . MAINE COUNTIES INCLUDED ARE ANDROSCOGGIN CUMBERLAND HANCOCK KNOX LINCOLN SAGADAHOC WALDO WASHINGTON YORK NHC001-005-011-013-015-017-019-302240- NH . NEW HAMPSHIRE COUNTIES INCLUDED ARE BELKNAP CHESHIRE HILLSBOROUGH MERRIMACK ROCKINGHAM STRAFFORD SULLIVAN ANZ050-051-052-150-151-152-153-154-302240- CW . ADJACENT COASTAL WATERS INCLUDED ARE Read more

WW 0490 Status Updates
STATUS REPORT ON WW 490 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW EEN TO 10 ESE AUG TO 50 S HUL. ..WEINMAN..06/30/24 ATTN...WFO...GYX...CAR...BTV... STATUS REPORT FOR WS 490 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MEC001-005-009-013-015-023-027-029-031-302240- ME . MAINE COUNTIES INCLUDED ARE ANDROSCOGGIN CUMBERLAND HANCOCK KNOX LINCOLN SAGADAHOC WALDO WASHINGTON YORK NHC001-005-011-013-015-017-019-302240- NH . NEW HAMPSHIRE COUNTIES INCLUDED ARE BELKNAP CHESHIRE HILLSBOROUGH MERRIMACK ROCKINGHAM STRAFFORD SULLIVAN ANZ050-051-052-150-151-152-153-154-302240- CW . ADJACENT COASTAL WATERS INCLUDED ARE Read more

WW 0490 Status Updates
STATUS REPORT ON WW 490 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW EEN TO 10 ESE AUG TO 50 S HUL. ..WEINMAN..06/30/24 ATTN...WFO...GYX...CAR...BTV... STATUS REPORT FOR WS 490 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MEC001-005-009-013-015-023-027-029-031-302240- ME . MAINE COUNTIES INCLUDED ARE ANDROSCOGGIN CUMBERLAND HANCOCK KNOX LINCOLN SAGADAHOC WALDO WASHINGTON YORK NHC001-005-011-013-015-017-019-302240- NH . NEW HAMPSHIRE COUNTIES INCLUDED ARE BELKNAP CHESHIRE HILLSBOROUGH MERRIMACK ROCKINGHAM STRAFFORD SULLIVAN ANZ050-051-052-150-151-152-153-154-302240- CW . ADJACENT COASTAL WATERS INCLUDED ARE Read more

WW 0490 Status Updates
STATUS REPORT ON WW 490 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW EEN TO 10 ESE AUG TO 50 S HUL. ..WEINMAN..06/30/24 ATTN...WFO...GYX...CAR...BTV... STATUS REPORT FOR WS 490 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MEC001-005-009-013-015-023-027-029-031-302240- ME . MAINE COUNTIES INCLUDED ARE ANDROSCOGGIN CUMBERLAND HANCOCK KNOX LINCOLN SAGADAHOC WALDO WASHINGTON YORK NHC001-005-011-013-015-017-019-302240- NH . NEW HAMPSHIRE COUNTIES INCLUDED ARE BELKNAP CHESHIRE HILLSBOROUGH MERRIMACK ROCKINGHAM STRAFFORD SULLIVAN ANZ050-051-052-150-151-152-153-154-302240- CW . ADJACENT COASTAL WATERS INCLUDED ARE Read more

WW 0490 Status Updates
STATUS REPORT ON WW 490 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW EEN TO 10 ESE AUG TO 50 S HUL. ..WEINMAN..06/30/24 ATTN...WFO...GYX...CAR...BTV... STATUS REPORT FOR WS 490 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MEC001-005-009-013-015-023-027-029-031-302240- ME . MAINE COUNTIES INCLUDED ARE ANDROSCOGGIN CUMBERLAND HANCOCK KNOX LINCOLN SAGADAHOC WALDO WASHINGTON YORK NHC001-005-011-013-015-017-019-302240- NH . NEW HAMPSHIRE COUNTIES INCLUDED ARE BELKNAP CHESHIRE HILLSBOROUGH MERRIMACK ROCKINGHAM STRAFFORD SULLIVAN ANZ050-051-052-150-151-152-153-154-302240- CW . ADJACENT COASTAL WATERS INCLUDED ARE Read more

No Mesoscale Discussions are in effect as of Sun Jun 30 23:52:11 UTC 2024.

WW 0491 Status Updates
STATUS REPORT ON WW 491 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..WEINMAN..06/30/24 ATTN...WFO...LWX...PHI...AKQ...RAH...RNK... STATUS REPORT FOR WS 491 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS DEC001-005-010040- DE . DELAWARE COUNTIES INCLUDED ARE KENT SUSSEX DCC001-010040- DC . DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE DISTRICT OF COLUMBIA MDC003-005-009-011-013-015-017-019-021-025-027-029-031-033-035- 037-039-041-045-047-510-010040- MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL BALTIMORE CALVERT CAROLINE CARROLL CECIL CHARLES DORCHESTER FREDERICK HARFORD HOWARD KENT Read more

WW 491 SEVERE TSTM DC DE MD NC NJ VA CW 301920Z - 010300Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 491 NWS Storm Prediction Center Norman OK 320 PM EDT Sun Jun 30 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of District Of Columbia Central and Southern Delaware Central and Eastern Maryland Northern North Carolina Southern New Jersey Northern, Central, and Eastern Virginia Coastal Waters * Effective this Sunday afternoon and evening from 320 PM until 1100 PM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph likely Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Thunderstorms are expected to continue developing while posing a threat for mainly scattered damaging winds as they move east-southeastward this afternoon and evening. The strongest gusts may reach 55-70 mph on a localized basis. Isolated hail up to 1-1.5 inches in diameter may also occur with the strongest thunderstorms. The severe thunderstorm watch area is approximately along and 90 statute miles east and west of a line from 40 miles north northwest of Dover DE to 15 miles southeast of Roanoke Rapids NC. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). 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 489...WW 490... 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 500. Mean storm motion vector 28030. ...Gleason Read more

WW 0492 Status Updates
STATUS REPORT ON WW 492 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 E BTM TO 30 WSW 3HT TO 45 W LWT. ..WEINMAN..06/30/24 ATTN...WFO...TFX...BYZ... STATUS REPORT FOR WS 492 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MTC027-031-037-045-057-065-067-095-097-107-111-010040- MT . MONTANA COUNTIES INCLUDED ARE FERGUS GALLATIN GOLDEN VALLEY JUDITH BASIN MADISON MUSSELSHELL PARK STILLWATER SWEET GRASS WHEATLAND YELLOWSTONE 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