Tag: spc

Official

SPC Apr 15, 2025 Day 4-8 Severe Weather Outlook

Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0358 AM CDT Tue Apr 15 2025 Valid 181200Z - 231200Z ...DISCUSSION... An active severe weather pattern expected through at least this weekend, before predictability diminishes early next week. ...D4/Friday... Guidance remains consistent with a broad swath of strong mid-level southwesterlies from the southern High Plains to the Great Lakes, downstream of a longwave trough from northern ON to the Lower CO Valley. This will overlap a similarly oriented surface front. In response to increasing mid-level height falls, a surface cyclone should track across the central Great
Official

SPC Apr 15, 2025 0730 UTC Day 3 Severe Thunderstorm Outlook

SPC 0730Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0221 AM CDT Tue Apr 15 2025 Valid 171200Z - 181200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN IA/NORTHERN MO/EASTERN NE... ...SUMMARY... Scattered severe thunderstorms, with a primary threat of large hail, are possible on Thursday evening/night, centered on eastern Nebraska, northern Missouri, and Iowa. ...Synopsis... A longwave trough, consisting of multiple embedded shortwave impulses, will become established from the southern Prairie Provinces across the West to off the Baja CA coast. Peak surface cyclone amplitude is expected over western KS on Thursday
Official

SPC Severe Thunderstorm Watch 138 Status Reports

WW 0138 Status Updates STATUS REPORT ON WW 138 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 ESE SDF TO 30 NE LEX TO 55 WNW HTS TO 25 WSW UNI TO 20 SW PKB TO 10 SSE PKB TO 35 ESE PKB TO 40 WNW EKN TO 30 NW EKN TO 25 S MGW TO 25 NE MGW. ..BENTLEY..04/14/25 ATTN...WFO...LMK...JKL...RLX...ILN...PBZ...RNK... STATUS REPORT FOR WS 138 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KYC001-005-009-011-017-019-021-025-043-045-049-051-063-065-067- 069-071-073-079-087-089-097-099-109-113-115-119-123-125-127-129- 131-133-135-137-151-153-155-159-165-167-169-173-175-179-181-189- 193-195-197-199-203-205-207-209-211-215-217-229-237-239- 142340- KY . KENTUCKY COUNTIES INCLUDED ARE ADAIR ANDERSON BARREN BATH BOURBON BOYD BOYLE BREATHITT CARTER CASEY CLARK CLAY ELLIOTT
Official

SPC MD 449

MD 0449 CONCERNING SEVERE THUNDERSTORM WATCH 138... FOR CENTRAL AND EASTERN KENTUCKY...FAR SOUTHERN OHIO...AND WEST VIRGINIA Mesoscale Discussion 0449 NWS Storm Prediction Center Norman OK 0430 PM CDT Mon Apr 14 2025 Areas affected...central and eastern Kentucky...far southern Ohio...and West Virginia Concerning...Severe Thunderstorm Watch 138... Valid 142130Z - 142300Z The severe weather threat for Severe Thunderstorm Watch 138 continues. SUMMARY...Multiple supercells capable of large hail and damaging wind gusts will persist this evening. DISCUSSION...A cluster of supercells has developed across southern Ohio with multiple large hail reports received thus far. The strongest of these cells is a lead supercell approaching
Official

SPC MD 450

MD 0450 CONCERNING SEVERE POTENTIAL...WATCH LIKELY FOR BLUE RIDGE INTO CENTRAL/NORTHERN VIRGINIA...WESTERN/CENTRAL MARYLAND...WASHINGTON DC Mesoscale Discussion 0450 NWS Storm Prediction Center Norman OK 0448 PM CDT Mon Apr 14 2025 Areas affected...Blue Ridge into central/northern Virginia...western/central Maryland...Washington DC Concerning...Severe potential...Watch likely Valid 142148Z - 142345Z Probability of Watch Issuance...80 percent SUMMARY...A threat for damaging winds and large hail will persist into the Blue Ridge and eastward this evening. A watch is likely in the next hour. DISCUSSION...A cluster of storms, including a supercell with a history of large to very-large hail, continue to move quickly (45-50 kts) eastward late this
Official

SPC Severe Thunderstorm Watch 138

WW 138 SEVERE TSTM KY OH PA VA WV 141925Z - 150300Z URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 138 NWS Storm Prediction Center Norman OK 325 PM EDT Mon Apr 14 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and Eastern Kentucky Southern Ohio Far Southwestern Pennsylvania Southwestern Virginia West Virginia * Effective this Monday afternoon and evening from 325 PM until 1100 PM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph likely Scattered large hail and isolated very large hail events to 2
Official

SPC Apr 14, 2025 2000 UTC Day 1 Convective Outlook

SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0249 PM CDT Mon Apr 14 2025 Valid 142000Z - 151200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS WEST VIRGINIA AND VIRGINIA... ...SUMMARY... Scattered strong to severe storms ongoing this afternoon will continue through early tonight from the Upper Ohio Valley eastward to the Mid-Atlantic. Large hail, severe wind gusts, and a couple of tornadoes are likely. ...20z Update OH Valley and Appalachians... Afternoon satellite imagery shows several areas of convection developing beneath a broad upper low over parts of the Midwest, Great
Official

SPC Apr 14, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

SPC 1930Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0220 PM CDT Mon Apr 14 2025 Valid 161200Z - 171200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast through Wednesday night. ...Synopsis... A broad area of isolated to scattered thunderstorms are expected across portions of the West into the northern Rockies and central Plains. This is in response to forcing for ascent increasing with a broad area of enhanced mid-level flow rounding the western US trough. Largely, thunderstorms will be disorganized and sub-severe, owing to poor moisture and weak shear profiles.
Official

SPC Apr 14, 2025 Day 4-8 Severe Weather Outlook

Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0350 AM CDT Mon Apr 14 2025 Valid 171200Z - 221200Z ...DISCUSSION... Active severe weather pattern expected late week into the weekend. ...D4/Thursday... A longwave trough should become clearly anchored over the West and consist of multiple embedded shortwave impulses. Peak surface cyclone amplitude is largely progged over western KS on Thursday afternoon, with a dryline arcing across eastern KS into the southern Great Plains. Another day of modifying moisture return northward from the western Gulf should yield at least moderate buoyancy ahead of the dryline. A