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WW 0517 Status Updates
STATUS REPORT ON WW 517 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 W CXY TO 30 NE IPT TO 25 E BGM TO 30 SE UCA TO 40 S SLK TO 15 ENE BTV TO 25 SSE EFK. ..LEITMAN..07/11/24 ATTN...WFO...ALY...BUF...BGM...BTV...CTP...PBZ... STATUS REPORT FOR WT 517 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NYC001-025-031-035-041-057-077-083-091-093-095-113-115-110140- NY . NEW YORK COUNTIES INCLUDED ARE ALBANY DELAWARE ESSEX FULTON HAMILTON MONTGOMERY OTSEGO RENSSELAER SARATOGA SCHENECTADY SCHOHARIE WARREN WASHINGTON PAC037-043-069-079-093-107-113-115-127-131-110140- PA . PENNSYLVANIA COUNTIES INCLUDED ARE COLUMBIA DAUPHIN LACKAWANNA LUZERNE MONTOUR SCHUYLKILL SULLIVAN SUSQUEHANNA WAYNE WYOMING VTC001-005-007-017-021-023-027-110140- Read more

WW 0517 Status Updates
STATUS REPORT ON WW 517 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 W CXY TO 30 NE IPT TO 25 E BGM TO 30 SE UCA TO 40 S SLK TO 15 ENE BTV TO 25 SSE EFK. ..LEITMAN..07/11/24 ATTN...WFO...ALY...BUF...BGM...BTV...CTP...PBZ... STATUS REPORT FOR WT 517 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NYC001-025-031-035-041-057-077-083-091-093-095-113-115-110140- NY . NEW YORK COUNTIES INCLUDED ARE ALBANY DELAWARE ESSEX FULTON HAMILTON MONTGOMERY OTSEGO RENSSELAER SARATOGA SCHENECTADY SCHOHARIE WARREN WASHINGTON PAC037-043-069-079-093-107-113-115-127-131-110140- PA . PENNSYLVANIA COUNTIES INCLUDED ARE COLUMBIA DAUPHIN LACKAWANNA LUZERNE MONTOUR SCHUYLKILL SULLIVAN SUSQUEHANNA WAYNE WYOMING VTC001-005-007-017-021-023-027-110140- Read more

WW 0517 Status Updates
STATUS REPORT ON WW 517 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 W CXY TO 30 NE IPT TO 25 E BGM TO 30 SE UCA TO 40 S SLK TO 15 ENE BTV TO 25 SSE EFK. ..LEITMAN..07/11/24 ATTN...WFO...ALY...BUF...BGM...BTV...CTP...PBZ... STATUS REPORT FOR WT 517 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NYC001-025-031-035-041-057-077-083-091-093-095-113-115-110140- NY . NEW YORK COUNTIES INCLUDED ARE ALBANY DELAWARE ESSEX FULTON HAMILTON MONTGOMERY OTSEGO RENSSELAER SARATOGA SCHENECTADY SCHOHARIE WARREN WASHINGTON PAC037-043-069-079-093-107-113-115-127-131-110140- PA . PENNSYLVANIA COUNTIES INCLUDED ARE COLUMBIA DAUPHIN LACKAWANNA LUZERNE MONTOUR SCHUYLKILL SULLIVAN SUSQUEHANNA WAYNE WYOMING VTC001-005-007-017-021-023-027-110140- Read more

WW 517 TORNADO NY PA VT LE LO 101605Z - 110100Z
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 517 NWS Storm Prediction Center Norman OK 1205 PM EDT Wed Jul 10 2024 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Upstate New York Northern and Central Pennsylvania Vermont Lake Erie Lake Ontario * Effective this Wednesday afternoon and evening from 1205 PM until 900 PM EDT. * Primary threats include... A few tornadoes likely Scattered damaging wind gusts to 70 mph possible SUMMARY...A moist air mass along and south of a warm front, and strong atmospheric winds associated with the remnants of Beryl, will influence storms capable of tornadoes and wind damage this afternoon through early/mid-evening. The tornado watch area is approximately along and 90 statute miles north and south of a line from 25 miles west southwest of Bradford PA to 25 miles south southeast of Burlington VT. 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. && AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 24025. ...Guyer Read more

WW 0518 Status Updates
STATUS REPORT ON WW 518 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 E RIC TO 30 SE CHO TO 15 SE BWI TO 10 ENE CXY. ..LEITMAN..07/11/24 ATTN...WFO...LWX...CTP...AKQ...RNK... STATUS REPORT FOR WS 518 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MDC003-015-017-025-033-110140- MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL CECIL CHARLES HARFORD PRINCE GEORGES PAC071-075-110140- PA . PENNSYLVANIA COUNTIES INCLUDED ARE LANCASTER LEBANON VAC033-085-099-177-630-110140- VA . VIRGINIA COUNTIES INCLUDED ARE CAROLINE HANOVER KING GEORGE SPOTSYLVANIA Read more

WW 0518 Status Updates
STATUS REPORT ON WW 518 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 E RIC TO 30 SE CHO TO 15 SE BWI TO 10 ENE CXY. ..LEITMAN..07/11/24 ATTN...WFO...LWX...CTP...AKQ...RNK... STATUS REPORT FOR WS 518 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MDC003-015-017-025-033-110140- MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL CECIL CHARLES HARFORD PRINCE GEORGES PAC071-075-110140- PA . PENNSYLVANIA COUNTIES INCLUDED ARE LANCASTER LEBANON VAC033-085-099-177-630-110140- VA . VIRGINIA COUNTIES INCLUDED ARE CAROLINE HANOVER KING GEORGE SPOTSYLVANIA Read more

WW 0518 Status Updates
STATUS REPORT ON WW 518 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 E RIC TO 30 SE CHO TO 15 SE BWI TO 10 ENE CXY. ..LEITMAN..07/11/24 ATTN...WFO...LWX...CTP...AKQ...RNK... STATUS REPORT FOR WS 518 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MDC003-015-017-025-033-110140- MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL CECIL CHARLES HARFORD PRINCE GEORGES PAC071-075-110140- PA . PENNSYLVANIA COUNTIES INCLUDED ARE LANCASTER LEBANON VAC033-085-099-177-630-110140- VA . VIRGINIA COUNTIES INCLUDED ARE CAROLINE HANOVER KING GEORGE SPOTSYLVANIA Read more

WW 0518 Status Updates
STATUS REPORT ON WW 518 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 E RIC TO 30 SE CHO TO 15 SE BWI TO 10 ENE CXY. ..LEITMAN..07/11/24 ATTN...WFO...LWX...CTP...AKQ...RNK... STATUS REPORT FOR WS 518 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MDC003-015-017-025-033-110140- MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL CECIL CHARLES HARFORD PRINCE GEORGES PAC071-075-110140- PA . PENNSYLVANIA COUNTIES INCLUDED ARE LANCASTER LEBANON VAC033-085-099-177-630-110140- VA . VIRGINIA COUNTIES INCLUDED ARE CAROLINE HANOVER KING GEORGE SPOTSYLVANIA Read more

WW 518 SEVERE TSTM DC MD PA VA WV CW 101740Z - 110200Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 518 NWS Storm Prediction Center Norman OK 140 PM EDT Wed Jul 10 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of District Of Columbia Maryland Southern Pennsylvania Virginia Far Eastern West Virginia Coastal Waters * Effective this Wednesday afternoon and evening from 140 PM until 1000 PM EDT. * Primary threats include... Scattered damaging wind gusts to 65 mph likely A tornado or two possible SUMMARY...Scattered storms will continue to develop and intensify across the region, with the most sustained storms potentially focused across southern Pennsylvania, interior Maryland, into northern/central Virginia. Damaging winds will be the most common severe concern. The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 50 miles northeast of Hagerstown MD to 40 miles east southeast of Lynchburg VA. 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 517... 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 550. Mean storm motion vector 24025. ...Guyer Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0742 PM CDT Wed Jul 10 2024 Valid 110100Z - 111200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM EASTERN PA TO NORTHERN NH... ...SUMMARY... A couple tornadoes along with scattered damaging winds remain possible this evening, over a portion of the Upper Mid-Atlantic States into western New England. ...01Z Update... A broken convective swath, consisting of mainly semi-discrete cells and short-linear clusters, should persist for a couple more hours from parts of the Mid-Atlantic States into western New England. Rich low-level moisture, characterized by low to mid 70s surface dew points, may support a relatively slow decay to convective vigor through late evening. Low-level wind profiles will subside more quickly from south to north tonight. This will yield a spatially diminishing threat away from the surface warm front, especially overnight. In the southeast NE/Lower MO Valley vicinity, the bulk of afternoon convection has waned. But regenerative updrafts along the western portion of the effective composite outflow/front may support an isolated severe hail and marginally severe wind threat for a couple more hours. ..Grams.. 07/11/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0742 PM CDT Wed Jul 10 2024 Valid 110100Z - 111200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM EASTERN PA TO NORTHERN NH... ...SUMMARY... A couple tornadoes along with scattered damaging winds remain possible this evening, over a portion of the Upper Mid-Atlantic States into western New England. ...01Z Update... A broken convective swath, consisting of mainly semi-discrete cells and short-linear clusters, should persist for a couple more hours from parts of the Mid-Atlantic States into western New England. Rich low-level moisture, characterized by low to mid 70s surface dew points, may support a relatively slow decay to convective vigor through late evening. Low-level wind profiles will subside more quickly from south to north tonight. This will yield a spatially diminishing threat away from the surface warm front, especially overnight. In the southeast NE/Lower MO Valley vicinity, the bulk of afternoon convection has waned. But regenerative updrafts along the western portion of the effective composite outflow/front may support an isolated severe hail and marginally severe wind threat for a couple more hours. ..Grams.. 07/11/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0742 PM CDT Wed Jul 10 2024 Valid 110100Z - 111200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM EASTERN PA TO NORTHERN NH... ...SUMMARY... A couple tornadoes along with scattered damaging winds remain possible this evening, over a portion of the Upper Mid-Atlantic States into western New England. ...01Z Update... A broken convective swath, consisting of mainly semi-discrete cells and short-linear clusters, should persist for a couple more hours from parts of the Mid-Atlantic States into western New England. Rich low-level moisture, characterized by low to mid 70s surface dew points, may support a relatively slow decay to convective vigor through late evening. Low-level wind profiles will subside more quickly from south to north tonight. This will yield a spatially diminishing threat away from the surface warm front, especially overnight. In the southeast NE/Lower MO Valley vicinity, the bulk of afternoon convection has waned. But regenerative updrafts along the western portion of the effective composite outflow/front may support an isolated severe hail and marginally severe wind threat for a couple more hours. ..Grams.. 07/11/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0742 PM CDT Wed Jul 10 2024 Valid 110100Z - 111200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM EASTERN PA TO NORTHERN NH... ...SUMMARY... A couple tornadoes along with scattered damaging winds remain possible this evening, over a portion of the Upper Mid-Atlantic States into western New England. ...01Z Update... A broken convective swath, consisting of mainly semi-discrete cells and short-linear clusters, should persist for a couple more hours from parts of the Mid-Atlantic States into western New England. Rich low-level moisture, characterized by low to mid 70s surface dew points, may support a relatively slow decay to convective vigor through late evening. Low-level wind profiles will subside more quickly from south to north tonight. This will yield a spatially diminishing threat away from the surface warm front, especially overnight. In the southeast NE/Lower MO Valley vicinity, the bulk of afternoon convection has waned. But regenerative updrafts along the western portion of the effective composite outflow/front may support an isolated severe hail and marginally severe wind threat for a couple more hours. ..Grams.. 07/11/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0742 PM CDT Wed Jul 10 2024 Valid 110100Z - 111200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM EASTERN PA TO NORTHERN NH... ...SUMMARY... A couple tornadoes along with scattered damaging winds remain possible this evening, over a portion of the Upper Mid-Atlantic States into western New England. ...01Z Update... A broken convective swath, consisting of mainly semi-discrete cells and short-linear clusters, should persist for a couple more hours from parts of the Mid-Atlantic States into western New England. Rich low-level moisture, characterized by low to mid 70s surface dew points, may support a relatively slow decay to convective vigor through late evening. Low-level wind profiles will subside more quickly from south to north tonight. This will yield a spatially diminishing threat away from the surface warm front, especially overnight. In the southeast NE/Lower MO Valley vicinity, the bulk of afternoon convection has waned. But regenerative updrafts along the western portion of the effective composite outflow/front may support an isolated severe hail and marginally severe wind threat for a couple more hours. ..Grams.. 07/11/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0742 PM CDT Wed Jul 10 2024 Valid 110100Z - 111200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM EASTERN PA TO NORTHERN NH... ...SUMMARY... A couple tornadoes along with scattered damaging winds remain possible this evening, over a portion of the Upper Mid-Atlantic States into western New England. ...01Z Update... A broken convective swath, consisting of mainly semi-discrete cells and short-linear clusters, should persist for a couple more hours from parts of the Mid-Atlantic States into western New England. Rich low-level moisture, characterized by low to mid 70s surface dew points, may support a relatively slow decay to convective vigor through late evening. Low-level wind profiles will subside more quickly from south to north tonight. This will yield a spatially diminishing threat away from the surface warm front, especially overnight. In the southeast NE/Lower MO Valley vicinity, the bulk of afternoon convection has waned. But regenerative updrafts along the western portion of the effective composite outflow/front may support an isolated severe hail and marginally severe wind threat for a couple more hours. ..Grams.. 07/11/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0742 PM CDT Wed Jul 10 2024 Valid 110100Z - 111200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM EASTERN PA TO NORTHERN NH... ...SUMMARY... A couple tornadoes along with scattered damaging winds remain possible this evening, over a portion of the Upper Mid-Atlantic States into western New England. ...01Z Update... A broken convective swath, consisting of mainly semi-discrete cells and short-linear clusters, should persist for a couple more hours from parts of the Mid-Atlantic States into western New England. Rich low-level moisture, characterized by low to mid 70s surface dew points, may support a relatively slow decay to convective vigor through late evening. Low-level wind profiles will subside more quickly from south to north tonight. This will yield a spatially diminishing threat away from the surface warm front, especially overnight. In the southeast NE/Lower MO Valley vicinity, the bulk of afternoon convection has waned. But regenerative updrafts along the western portion of the effective composite outflow/front may support an isolated severe hail and marginally severe wind threat for a couple more hours. ..Grams.. 07/11/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0742 PM CDT Wed Jul 10 2024 Valid 110100Z - 111200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM EASTERN PA TO NORTHERN NH... ...SUMMARY... A couple tornadoes along with scattered damaging winds remain possible this evening, over a portion of the Upper Mid-Atlantic States into western New England. ...01Z Update... A broken convective swath, consisting of mainly semi-discrete cells and short-linear clusters, should persist for a couple more hours from parts of the Mid-Atlantic States into western New England. Rich low-level moisture, characterized by low to mid 70s surface dew points, may support a relatively slow decay to convective vigor through late evening. Low-level wind profiles will subside more quickly from south to north tonight. This will yield a spatially diminishing threat away from the surface warm front, especially overnight. In the southeast NE/Lower MO Valley vicinity, the bulk of afternoon convection has waned. But regenerative updrafts along the western portion of the effective composite outflow/front may support an isolated severe hail and marginally severe wind threat for a couple more hours. ..Grams.. 07/11/2024 Read more

MD 1576 CONCERNING TORNADO WATCH 517... FOR PORTIONS OF SOUTHERN NY...EASTERN PA...AND NORTHERN NJ
Mesoscale Discussion 1576 NWS Storm Prediction Center Norman OK 0617 PM CDT Wed Jul 10 2024 Areas affected...portions of southern NY...eastern PA...and northern NJ Concerning...Tornado Watch 517... Valid 102317Z - 110045Z The severe weather threat for Tornado Watch 517 continues. SUMMARY...Severe thunderstorms will continue to pose a risk for a couple of tornadoes and isolated damaging gusts the next couple of hours across Tornado Watch 517. DISCUSSION...A mix of discrete supercells and line segments are ongoing this evening across parts of southern/central NY into central/eastern PA. This activity should continue to track northeast at around 35 kt over the next few hours, with additional storm development possible a bit further west along the synoptic cold front. A moist and unstable airmass with favorable vertical shear is in place and will aid in continued severe potential in the short term across Tornado Watch 517. A gradual decrease in instability and more favorable vertical shear is noted with eastern extent into parts of southern NY, far eastern PA, NJ and southern New England. Storm intensity is expected to gradually wane with eastward extent through the evening as the boundary-layer nocturnally stabilizes. A downstream watch is not expected at this time. However, if needed, local watch extensions may be considered for parts of WFOs BGM and ALY as convection nears the watch boundary by 01z. ..Leitman.. 07/10/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...OKX...ALY...PHI...BGM...CTP... LAT...LON 42167655 42927543 43027540 43107433 42797367 42517340 41987357 41627384 41047445 40267592 40267690 40307738 40567774 41177735 42167655 Read more

WW 0519 Status Updates
STATUS REPORT ON WW 519 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 W LNK TO 10 SW SDA TO 40 WSW LWD TO 50 NW COU TO 30 NNW COU. ..LYONS..07/11/24 ATTN...WFO...DMX...OAX...DVN...TOP...EAX...LSX... STATUS REPORT FOR WS 519 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC071-110140- IA . IOWA COUNTIES INCLUDED ARE FREMONT KSC013-043-131-110140- KS . KANSAS COUNTIES INCLUDED ARE BROWN DONIPHAN NEMAHA MOC003-005-021-049-063-075-087-147-110140- MO . MISSOURI COUNTIES INCLUDED ARE ANDREW ATCHISON BUCHANAN CLINTON DEKALB GENTRY HOLT NODAWAY Read more

MD 1576 CONCERNING TORNADO WATCH 517... FOR PORTIONS OF SOUTHERN NY...EASTERN PA...AND NORTHERN NJ
Mesoscale Discussion 1576 NWS Storm Prediction Center Norman OK 0617 PM CDT Wed Jul 10 2024 Areas affected...portions of southern NY...eastern PA...and northern NJ Concerning...Tornado Watch 517... Valid 102317Z - 110045Z The severe weather threat for Tornado Watch 517 continues. SUMMARY...Severe thunderstorms will continue to pose a risk for a couple of tornadoes and isolated damaging gusts the next couple of hours across Tornado Watch 517. DISCUSSION...A mix of discrete supercells and line segments are ongoing this evening across parts of southern/central NY into central/eastern PA. This activity should continue to track northeast at around 35 kt over the next few hours, with additional storm development possible a bit further west along the synoptic cold front. A moist and unstable airmass with favorable vertical shear is in place and will aid in continued severe potential in the short term across Tornado Watch 517. A gradual decrease in instability and more favorable vertical shear is noted with eastern extent into parts of southern NY, far eastern PA, NJ and southern New England. Storm intensity is expected to gradually wane with eastward extent through the evening as the boundary-layer nocturnally stabilizes. A downstream watch is not expected at this time. However, if needed, local watch extensions may be considered for parts of WFOs BGM and ALY as convection nears the watch boundary by 01z. ..Leitman.. 07/10/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...OKX...ALY...PHI...BGM...CTP... LAT...LON 42167655 42927543 43027540 43107433 42797367 42517340 41987357 41627384 41047445 40267592 40267690 40307738 40567774 41177735 42167655 Read more