Severe Storms

WW 0660 Status Updates
STATUS REPORT ON WW 660 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..DEAN..08/28/24 ATTN...WFO...IWX... STATUS REPORT FOR WS 660 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS INC017-039-049-069-085-087-091-099-103-113-131-141-149-169-181- 183-280140- IN . INDIANA COUNTIES INCLUDED ARE CASS ELKHART FULTON HUNTINGTON KOSCIUSKO LAGRANGE LA PORTE MARSHALL MIAMI NOBLE PULASKI ST. JOSEPH STARKE WABASH WHITE WHITLEY MIC021-027-149-280140- MI . MICHIGAN COUNTIES INCLUDED ARE BERRIEN CASS ST. JOSEPH LMZ043-046-080-280140- CW Read more

WW 0658 Status Updates
STATUS REPORT ON WW 658 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 WSW JVL TO 40 NW BEH. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2020 ..DEAN..08/28/24 ATTN...WFO...LOT...MKX... STATUS REPORT FOR WS 658 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ILC007-031-037-043-053-063-075-089-091-093-097-099-103-105-111- 141-197-201-280140- IL . ILLINOIS COUNTIES INCLUDED ARE BOONE COOK DE KALB DUPAGE FORD GRUNDY IROQUOIS KANE KANKAKEE KENDALL LAKE LA SALLE LEE LIVINGSTON MCHENRY OGLE WILL WINNEBAGO INC007-073-089-111-127-280140- IN . INDIANA COUNTIES INCLUDED ARE BENTON JASPER LAKE NEWTON PORTER Read more

WW 0658 Status Updates
STATUS REPORT ON WW 658 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 WSW JVL TO 40 NW BEH. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2020 ..DEAN..08/28/24 ATTN...WFO...LOT...MKX... STATUS REPORT FOR WS 658 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ILC007-031-037-043-053-063-075-089-091-093-097-099-103-105-111- 141-197-201-280140- IL . ILLINOIS COUNTIES INCLUDED ARE BOONE COOK DE KALB DUPAGE FORD GRUNDY IROQUOIS KANE KANKAKEE KENDALL LAKE LA SALLE LEE LIVINGSTON MCHENRY OGLE WILL WINNEBAGO INC007-073-089-111-127-280140- IN . INDIANA COUNTIES INCLUDED ARE BENTON JASPER LAKE NEWTON PORTER Read more

WW 0656 Status Updates
STATUS REPORT ON WW 656 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 ESE AZO TO 25 WNW JXN TO 20 WNW OSC. ..LYONS..08/27/24 ATTN...WFO...GRR...APX... STATUS REPORT FOR WS 656 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC069-075-272240- MI . MICHIGAN COUNTIES INCLUDED ARE IOSCO JACKSON LHZ363-272240- CW . ADJACENT COASTAL WATERS INCLUDED ARE LAKE HURON FROM STURGEON POINT TO ALABASTER MI 5NM OFF SHORE TO US/CANADIAN BORDER 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 0656 Status Updates
STATUS REPORT ON WW 656 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 ESE AZO TO 25 WNW JXN TO 20 WNW OSC. ..LYONS..08/27/24 ATTN...WFO...GRR...APX... STATUS REPORT FOR WS 656 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC069-075-272240- MI . MICHIGAN COUNTIES INCLUDED ARE IOSCO JACKSON LHZ363-272240- CW . ADJACENT COASTAL WATERS INCLUDED ARE LAKE HURON FROM STURGEON POINT TO ALABASTER MI 5NM OFF SHORE TO US/CANADIAN BORDER 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 0656 Status Updates
STATUS REPORT ON WW 656 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 ESE AZO TO 25 WNW JXN TO 20 WNW OSC. ..LYONS..08/27/24 ATTN...WFO...GRR...APX... STATUS REPORT FOR WS 656 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC069-075-272240- MI . MICHIGAN COUNTIES INCLUDED ARE IOSCO JACKSON LHZ363-272240- CW . ADJACENT COASTAL WATERS INCLUDED ARE LAKE HURON FROM STURGEON POINT TO ALABASTER MI 5NM OFF SHORE TO US/CANADIAN BORDER 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 0656 Status Updates
STATUS REPORT ON WW 656 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 ESE AZO TO 25 WNW JXN TO 20 WNW OSC. ..LYONS..08/27/24 ATTN...WFO...GRR...APX... STATUS REPORT FOR WS 656 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC069-075-272240- MI . MICHIGAN COUNTIES INCLUDED ARE IOSCO JACKSON LHZ363-272240- CW . ADJACENT COASTAL WATERS INCLUDED ARE LAKE HURON FROM STURGEON POINT TO ALABASTER MI 5NM OFF SHORE TO US/CANADIAN BORDER 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 0656 Status Updates
STATUS REPORT ON WW 656 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 ESE AZO TO 25 WNW JXN TO 20 WNW OSC. ..LYONS..08/27/24 ATTN...WFO...GRR...APX... STATUS REPORT FOR WS 656 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC069-075-272240- MI . MICHIGAN COUNTIES INCLUDED ARE IOSCO JACKSON LHZ363-272240- CW . ADJACENT COASTAL WATERS INCLUDED ARE LAKE HURON FROM STURGEON POINT TO ALABASTER MI 5NM OFF SHORE TO US/CANADIAN BORDER 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

MD 2019 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR EXTREME NORTHEAST KS INTO CENTRAL/NORTHERN MO AND WESTERN IL
Mesoscale Discussion 2019 NWS Storm Prediction Center Norman OK 0516 PM CDT Tue Aug 27 2024 Areas affected...Extreme northeast KS into central/northern MO and western IL Concerning...Severe potential...Watch unlikely Valid 272216Z - 280015Z Probability of Watch Issuance...20 percent SUMMARY...Isolated damaging gusts and hail are possible into early evening. DISCUSSION...Isolated thunderstorms have developed from south/southeast of Kansas City into northern MO. The environment across this region is quite warm, moist, and unstable, with MLCAPE of 2500-4000 J/kg in place. However, deep-layer flow and vertical shear are generally weak, which should tend to limit storm organization. Given the favorable instability and rather steep low/midlevel lapse rates, the strongest updrafts could briefly pose some hail threat, though localized downbursts may become the most prominent hazard with time. This isolated severe threat may persist into early evening. ..Dean/Gleason.. 08/27/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...ILX...LSX...DVN...SGF...DMX...EAX...TOP... LAT...LON 39479490 40309368 40729288 40199108 40189091 39589006 39008998 38459021 38219179 38239303 38269453 38969515 39479490 Read more

WW 0657 Status Updates
STATUS REPORT ON WW 657 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 S AZO TO 25 SSW FNT TO 30 S BAX TO 10 ESE BAX TO 15 NNE BAX TO 25 SE APN. ..LYONS..08/27/24 ATTN...WFO...DTX... STATUS REPORT FOR WS 657 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC063-087-091-093-099-115-125-147-151-161-163-272240- MI . MICHIGAN COUNTIES INCLUDED ARE HURON LAPEER LENAWEE LIVINGSTON MACOMB MONROE OAKLAND ST. CLAIR SANILAC WASHTENAW WAYNE LCZ422-423-460-LEZ444-LHZ441-442-443-462-463-464-272240- CW . ADJACENT COASTAL WATERS INCLUDED ARE ST. CLAIR RIVER DETROIT RIVER LAKE ST. CLAIR OPEN LAKE (U.S. PORTION) MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI Read more

WW 0657 Status Updates
STATUS REPORT ON WW 657 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 S AZO TO 25 SSW FNT TO 30 S BAX TO 10 ESE BAX TO 15 NNE BAX TO 25 SE APN. ..LYONS..08/27/24 ATTN...WFO...DTX... STATUS REPORT FOR WS 657 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC063-087-091-093-099-115-125-147-151-161-163-272240- MI . MICHIGAN COUNTIES INCLUDED ARE HURON LAPEER LENAWEE LIVINGSTON MACOMB MONROE OAKLAND ST. CLAIR SANILAC WASHTENAW WAYNE LCZ422-423-460-LEZ444-LHZ441-442-443-462-463-464-272240- CW . ADJACENT COASTAL WATERS INCLUDED ARE ST. CLAIR RIVER DETROIT RIVER LAKE ST. CLAIR OPEN LAKE (U.S. PORTION) MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI Read more

WW 0657 Status Updates
STATUS REPORT ON WW 657 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 S AZO TO 25 SSW FNT TO 30 S BAX TO 10 ESE BAX TO 15 NNE BAX TO 25 SE APN. ..LYONS..08/27/24 ATTN...WFO...DTX... STATUS REPORT FOR WS 657 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC063-087-091-093-099-115-125-147-151-161-163-272240- MI . MICHIGAN COUNTIES INCLUDED ARE HURON LAPEER LENAWEE LIVINGSTON MACOMB MONROE OAKLAND ST. CLAIR SANILAC WASHTENAW WAYNE LCZ422-423-460-LEZ444-LHZ441-442-443-462-463-464-272240- CW . ADJACENT COASTAL WATERS INCLUDED ARE ST. CLAIR RIVER DETROIT RIVER LAKE ST. CLAIR OPEN LAKE (U.S. PORTION) MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI Read more

WW 0657 Status Updates
STATUS REPORT ON WW 657 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 S AZO TO 25 SSW FNT TO 30 S BAX TO 10 ESE BAX TO 15 NNE BAX TO 25 SE APN. ..LYONS..08/27/24 ATTN...WFO...DTX... STATUS REPORT FOR WS 657 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC063-087-091-093-099-115-125-147-151-161-163-272240- MI . MICHIGAN COUNTIES INCLUDED ARE HURON LAPEER LENAWEE LIVINGSTON MACOMB MONROE OAKLAND ST. CLAIR SANILAC WASHTENAW WAYNE LCZ422-423-460-LEZ444-LHZ441-442-443-462-463-464-272240- CW . ADJACENT COASTAL WATERS INCLUDED ARE ST. CLAIR RIVER DETROIT RIVER LAKE ST. CLAIR OPEN LAKE (U.S. PORTION) MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI Read more

WW 0657 Status Updates
STATUS REPORT ON WW 657 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 S AZO TO 25 SSW FNT TO 30 S BAX TO 10 ESE BAX TO 15 NNE BAX TO 25 SE APN. ..LYONS..08/27/24 ATTN...WFO...DTX... STATUS REPORT FOR WS 657 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC063-087-091-093-099-115-125-147-151-161-163-272240- MI . MICHIGAN COUNTIES INCLUDED ARE HURON LAPEER LENAWEE LIVINGSTON MACOMB MONROE OAKLAND ST. CLAIR SANILAC WASHTENAW WAYNE LCZ422-423-460-LEZ444-LHZ441-442-443-462-463-464-272240- CW . ADJACENT COASTAL WATERS INCLUDED ARE ST. CLAIR RIVER DETROIT RIVER LAKE ST. CLAIR OPEN LAKE (U.S. PORTION) MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI Read more

MD 2020 CONCERNING SEVERE THUNDERSTORM WATCH 658... FOR NORTHEAST IL INTO EXTREME NORTHWEST IN/SOUTHWEST MI
Mesoscale Discussion 2020 NWS Storm Prediction Center Norman OK 0624 PM CDT Tue Aug 27 2024 Areas affected...Northeast IL into extreme northwest IN/southwest MI Concerning...Severe Thunderstorm Watch 658... Valid 272324Z - 280100Z The severe weather threat for Severe Thunderstorm Watch 658 continues. SUMMARY...The severe threat will spread southeastward through early evening. DISCUSSION...A supercell has developed across far northeast IL, with reports of severe wind gusts and hail up to golf ball size thus far. Large to extreme instability will continue to support vigorous updrafts early this evening. Deep-layer shear becomes increasingly modest with southward extent, but will remain locally enhanced near a lake-enhanced surface boundary draped northwest to southeast across the Chicagoland vicinity. The ongoing supercell may propagate southeastward near this boundary, with a continued threat of large hail and severe/damaging gusts. There is some potential for additional development near the trailing outflow, with increasing cumulus noted in Kane County. Depending on the number and proximity of storms that develop early this evening, some upscale growth into a southeastward-moving cluster will be possible with time. Downstream watch issuance is possible if a severe threat begins to approach northwest IN/southwest MI. ..Dean/Gleason.. 08/27/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...IWX...LOT... LAT...LON 42488833 42458779 42398760 42088668 41808633 41518637 41258654 41188716 41288767 41548817 41828869 42388855 42488833 Read more

MD 2019 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR EXTREME NORTHEAST KS INTO CENTRAL/NORTHERN MO AND WESTERN IL
Mesoscale Discussion 2019 NWS Storm Prediction Center Norman OK 0516 PM CDT Tue Aug 27 2024 Areas affected...Extreme northeast KS into central/northern MO and western IL Concerning...Severe potential...Watch unlikely Valid 272216Z - 280015Z Probability of Watch Issuance...20 percent SUMMARY...Isolated damaging gusts and hail are possible into early evening. DISCUSSION...Isolated thunderstorms have developed from south/southeast of Kansas City into northern MO. The environment across this region is quite warm, moist, and unstable, with MLCAPE of 2500-4000 J/kg in place. However, deep-layer flow and vertical shear are generally weak, which should tend to limit storm organization. Given the favorable instability and rather steep low/midlevel lapse rates, the strongest updrafts could briefly pose some hail threat, though localized downbursts may become the most prominent hazard with time. This isolated severe threat may persist into early evening. ..Dean/Gleason.. 08/27/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...ILX...LSX...DVN...SGF...DMX...EAX...TOP... LAT...LON 39479490 40309368 40729288 40199108 40189091 39589006 39008998 38459021 38219179 38239303 38269453 38969515 39479490 Read more

MD 2018 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR PORTIONS OF NORTHERN OHIO INTO EXTREME NORTHWESTERN PENNSYLVANIA AND EXTREME SOUTHWESTERN NEW YORK
Mesoscale Discussion 2018 NWS Storm Prediction Center Norman OK 0511 PM CDT Tue Aug 27 2024 Areas affected...portions of northern Ohio into extreme northwestern Pennsylvania and extreme southwestern New York Concerning...Severe potential...Watch possible Valid 272211Z - 272315Z Probability of Watch Issuance...60 percent SUMMARY...The severe threat should increase over the next few hours as an organized line of strong to severe thunderstorms approaches. Damaging gusts are the primary concern. A Severe Thunderstorm Watch may be needed soon. DISCUSSION...A persistent elongated convective system, with a history of strong to severe wind gusts, continues to rapidly propagate southeastward due to a surging cold pool, delineated by -20 F observed surface temperature changes. Surface temperatures/dewpoints preceding the convective system have been in the lower 90s/lower 70s F, contributing to 2000-3500 J/kg MLCAPE (when considering 7+ C/km mid-level lapse rates). However, surface temperatures/dewpoints and mid-level lapse rates decrease with east-southeastward extent, so questions remain how profound the severe threat will become after the convective system crosses Lake Erie. Nonetheless, considerable momentum associated with the cold pool suggests that at least some organized damaging wind threat should persist as storms move ashore. Furthermore, the lack of friction over the water surface may allow for the generation of considerable kinematic momentum, with particularly strong/damaging gusts likely along the Lake Erie shoreline. With an appreciable threat of strong/damaging gusts evident, a Severe Thunderstorm Watch may be needed soon. ..Squitieri/Gleason.. 08/27/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...BUF...CTP...PBZ...CLE...DTX... LAT...LON 42007920 41547961 41128048 40848192 40828290 41068354 41478378 41728368 41688330 41808144 42428002 42407932 42197920 42007920 Read more

MD 2017 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR NORTHERN IL AND VICINITY
Mesoscale Discussion 2017 NWS Storm Prediction Center Norman OK 0447 PM CDT Tue Aug 27 2024 Areas affected...Northern IL and vicinity Concerning...Severe potential...Watch possible Valid 272147Z - 272315Z Probability of Watch Issuance...60 percent SUMMARY...Strong to severe storms are possible into early evening. DISCUSSION...Storm development appears to be underway near the IL/WI border, with a very unstable (MLCAPE of 3000-4000 J/kg) environment. Deep-layer shear is somewhat favorable for organized convection given the favorable buoyancy, and at least isolated storms capable of hail and damaging gusts may develop into early evening. Storm coverage across the region is uncertain, but there will be some potential for modest upscale growth if several storms can develop within this regime, which would result in an increasing damaging-wind threat. Watch issuance is possible in order to address these hazards. ..Dean/Gleason.. 08/27/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...IWX...LOT...ILX...MKX...DVN... LAT...LON 41049145 42308962 42718896 42818852 42908807 42698765 42058671 41108659 40728938 40629083 40699160 41049145 Read more

MD 2016 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR NORTHERN INDIANA INTO NORTHWEST OHIO AND SOUTHEAST LOWER MICHIGAN
Mesoscale Discussion 2016 NWS Storm Prediction Center Norman OK 0356 PM CDT Tue Aug 27 2024 Areas affected...northern Indiana into northwest Ohio and southeast Lower Michigan Concerning...Severe potential...Watch possible Valid 272056Z - 272300Z Probability of Watch Issuance...60 percent SUMMARY...New storms continue to develop southwestward along the wind shift, and locally damaging gusts may develop. DISCUSSION...Robust storms have developed recently extending southwest of the existing watch over Lower MI. These storms will interact with a very unstable air mass with sufficient deep-layer mean wind speeds to allow for forward propagation over the next several hours. Given the high precipitable water and steep low-level lapse rates coincident with peak heating, water-loaded downdrafts may potentially become severe. ..Jewell/Guyer.. 08/27/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...CLE...DTX...IWX...GRR... LAT...LON 41298666 41688622 41978549 42138470 42148405 42178342 42008314 41528331 40958404 40778469 40618553 40718610 40838657 41298666 Read more

WW 0658 Status Updates
STATUS REPORT ON WW 658 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..DEAN..08/27/24 ATTN...WFO...LOT...MKX... STATUS REPORT FOR WS 658 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ILC007-031-037-043-053-063-075-089-091-093-097-099-103-105-111- 141-197-201-272340- IL . ILLINOIS COUNTIES INCLUDED ARE BOONE COOK DE KALB DUPAGE FORD GRUNDY IROQUOIS KANE KANKAKEE KENDALL LAKE LA SALLE LEE LIVINGSTON MCHENRY OGLE WILL WINNEBAGO INC007-073-089-111-127-272340- IN . INDIANA COUNTIES INCLUDED ARE BENTON JASPER LAKE NEWTON PORTER WIC059-101-127-272340- WI Read more