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MD 2089 CONCERNING SEVERE THUNDERSTORM WATCH 677... FOR SOUTHEASTERN MINNESOTA...WESTERN WISCONSIN
Mesoscale Discussion 2089 NWS Storm Prediction Center Norman OK 0741 PM CDT Thu Sep 19 2024 Areas affected...forsoutheastern Minesotta...western Wisconsin Concerning...Severe Thunderstorm Watch 677... Valid 200041Z - 200245Z The severe weather threat for Severe Thunderstorm Watch 677 continues. SUMMARY...Severe threat continues within WW677. DISCUSSION...Storms continue along a northward lifting warm front and cold front moving across portions of eastern MN into western WI. Recent storm reports from storms along the warm front have produced instances of hail up to 1.25 in. Recent 00z RAOB from MPX shows a warm layer aloft with MLCAPE around 1900 J/kg and deep layer shear around 30 kts. Hodographs are primarily linear with generally uniformly westerly winds aloft. This will continue to support mixed mode of multi-cell clusters and occasional supercells capable of large hail. The highest threat for large hail will remain along and north of the warm front in the near term. Further severe development will continue along and ahead of the cold front as well, with potential for hail and instances of strong to severe wind. ..Thornton.. 09/20/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...ARX...MPX... LAT...LON 44119332 45409268 45469098 45219069 44589080 43999153 43759191 43609313 43609316 44119332 Read more

WW 0679 Status Updates
STATUS REPORT ON WW 679 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 S CQB TO 15 N TUL TO 25 WNW GMJ TO 10 W JLN TO 40 ENE CNU TO 35 SW OJC. ..THORNTON..09/20/24 ATTN...WFO...ICT...TOP...SGF...EAX...TSA... STATUS REPORT FOR WS 679 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC021-037-107-121-200340- KS . KANSAS COUNTIES INCLUDED ARE CHEROKEE CRAWFORD LINN MIAMI MOC011-013-015-037-039-057-083-085-097-101-119-145-159-185-217- 200340- MO . MISSOURI COUNTIES INCLUDED ARE BARTON BATES BENTON CASS CEDAR DADE HENRY HICKORY JASPER JOHNSON MCDONALD NEWTON PETTIS ST. CLAIR VERNON OKC035-037-041-097-115-131-143-145-200340- OK Read more

WW 679 SEVERE TSTM KS MO OK 192230Z - 200500Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 679 NWS Storm Prediction Center Norman OK 530 PM CDT Thu Sep 19 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southeast Kansas Western Missouri Northeast Oklahoma * Effective this Thursday afternoon from 530 PM until Midnight CDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 75 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Scattered thunderstorms are expected to continue to intensify through the evening across southeast Kansas and northern Oklahoma, spreading into parts of western Missouri through the evening. Damaging winds and some hail are the main concerns. The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 30 miles south of Bartlesville OK to 100 miles north northeast of Joplin MO. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU9). 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 677...WW 678... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 28025. ...Hart Read more

MD 2090 CONCERNING TORNADO WATCH 678... FOR NORTHERN WISCONSIN
Mesoscale Discussion 2090 NWS Storm Prediction Center Norman OK 0808 PM CDT Thu Sep 19 2024 Areas affected...northern Wisconsin Concerning...Tornado Watch 678... Valid 200108Z - 200215Z The severe weather threat for Tornado Watch 678 continues. SUMMARY...Severe threat continues within WW678. DISCUSSION...Thunderstorms continue within WW678 across northern WI. Storm mode has largely been supercellular, with weakening observed over the last hour. Storms are still within a region of MLCAPE around 1000 J/kg but may be responding to loss of daytime heating and warmer mid-levels. Shear profiles do remain favorable. The VAD profile from DLH continues to show low-level curvature and 0-3 km SRH around 160 m2/s2, favorable for maintaining supercells capable of instances of large hail and perhaps a tornado. However, the declining thermodynamic profile may not support this risk for much longer into the evening. ..Thornton.. 09/20/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...DLH...MPX... LAT...LON 46029258 46699236 47029189 47059161 47069150 46979090 46629089 46059108 45859116 45699144 45679218 45689247 45769253 46029258 Read more

WW 0679 Status Updates
STATUS REPORT ON WW 679 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 S PNC TO 15 SW BVO TO 35 SSE CNU TO 20 ENE CNU TO 30 SSE TOP. ..THORNTON..09/20/24 ATTN...WFO...ICT...TOP...SGF...EAX...TSA... STATUS REPORT FOR WS 679 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC003-011-021-037-099-107-121-200240- KS . KANSAS COUNTIES INCLUDED ARE ANDERSON BOURBON CHEROKEE CRAWFORD LABETTE LINN MIAMI MOC011-013-015-037-039-057-083-085-097-101-119-145-159-185-217- 200240- MO . MISSOURI COUNTIES INCLUDED ARE BARTON BATES BENTON CASS CEDAR DADE HENRY HICKORY JASPER JOHNSON MCDONALD NEWTON PETTIS ST. CLAIR VERNON OKC035-037-041-097-105-115-117-131-143-145-147-200240- Read more

WW 0677 Status Updates
STATUS REPORT ON WW 677 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 SSE MCW TO 20 S RST TO 15 WNW LSE TO 30 ESE MSP TO 65 NE MSP. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0289 ..THORNTON..09/20/24 ATTN...WFO...DMX...ARX...MPX... STATUS REPORT FOR WS 677 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC037-067-089-191-200240- IA . IOWA COUNTIES INCLUDED ARE CHICKASAW FLOYD HOWARD WINNESHIEK MNC055-200240- MN . MINNESOTA COUNTIES INCLUDED ARE HOUSTON WIC005-017-019-033-035-053-063-091-093-095-107-109-119-121- 200240- WI . WISCONSIN COUNTIES INCLUDED ARE Read more

WW 0677 Status Updates
STATUS REPORT ON WW 677 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 SSE MCW TO 20 S RST TO 15 WNW LSE TO 30 ESE MSP TO 65 NE MSP. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0289 ..THORNTON..09/20/24 ATTN...WFO...DMX...ARX...MPX... STATUS REPORT FOR WS 677 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC037-067-089-191-200240- IA . IOWA COUNTIES INCLUDED ARE CHICKASAW FLOYD HOWARD WINNESHIEK MNC055-200240- MN . MINNESOTA COUNTIES INCLUDED ARE HOUSTON WIC005-017-019-033-035-053-063-091-093-095-107-109-119-121- 200240- WI . WISCONSIN COUNTIES INCLUDED ARE Read more

WW 677 SEVERE TSTM IA MN WI 191910Z - 200300Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 677 NWS Storm Prediction Center Norman OK 210 PM CDT Thu Sep 19 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northern Iowa Southern and East-Central Minnesota Western Wisconsin * Effective this Thursday afternoon and evening from 210 PM until 1000 PM CDT. * Primary threats include... Scattered large hail likely with isolated very large hail events to 2.5 inches in diameter possible Scattered damaging wind gusts to 70 mph possible A tornado or two possible SUMMARY...Thunderstorms should continue to develop this afternoon while posing a threat for large hail up to 1.5-2.5 inches in diameter. As this activity spreads east-northeastward, damaging winds around 60-70 mph may become more of a threat through this evening, especially if thunderstorms can form into clusters. A tornado or two also appears possible with any persistent, surface-based supercell. The severe thunderstorm watch area is approximately along and 75 statute miles east and west of a line from 45 miles north northwest of Eau Claire WI to 15 miles southwest of Mason City IA. 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. && AVIATION...A few severe thunderstorms with hail surface and aloft to 2.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 24030. ...Gleason Read more

WW 0678 Status Updates
STATUS REPORT ON WW 678 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 ENE BRD TO 40 N IWD. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2090 ..THORNTON..09/20/24 ATTN...WFO...DLH... STATUS REPORT FOR WT 678 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS WIC003-007-013-031-099-113-129-200240- WI . WISCONSIN COUNTIES INCLUDED ARE ASHLAND BAYFIELD BURNETT DOUGLAS PRICE SAWYER WASHBURN LSZ121-200240- CW . ADJACENT COASTAL WATERS INCLUDED ARE CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI 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 0678 Status Updates
STATUS REPORT ON WW 678 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 ENE BRD TO 40 N IWD. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2090 ..THORNTON..09/20/24 ATTN...WFO...DLH... STATUS REPORT FOR WT 678 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS WIC003-007-013-031-099-113-129-200240- WI . WISCONSIN COUNTIES INCLUDED ARE ASHLAND BAYFIELD BURNETT DOUGLAS PRICE SAWYER WASHBURN LSZ121-200240- CW . ADJACENT COASTAL WATERS INCLUDED ARE CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI 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 678 TORNADO MN WI LS 192205Z - 200400Z
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 678 NWS Storm Prediction Center Norman OK 505 PM CDT Thu Sep 19 2024 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Northeast Minnesota Northwest Wisconsin Lake Superior * Effective this Thursday afternoon and evening from 505 PM until 1100 PM CDT. * Primary threats include... A couple tornadoes possible Scattered damaging wind gusts to 70 mph possible Scattered large hail events to 1.5 inches in diameter possible SUMMARY...Scattered thunderstorms will continue to develop across northeastern Minnesota and track eastward across the watch area this evening. Isolated intense/supercells are possible, capable of hail, damaging winds, and a tornado or two. The tornado watch area is approximately along and 50 statute miles east and west of a line from 40 miles north northwest of Grand Marais MN to 85 miles south of Duluth MN. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU8). 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. && OTHER WATCH INFORMATION...CONTINUE...WW 677... AVIATION...Tornadoes and 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 23035. ...Hart Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Thu Sep 19 2024 Valid 200100Z - 201200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF THE UPPER MISSISSIPPI VALLEY INTO PARTS OF NORTHEAST OKLAHOMA... ...SUMMARY... Scattered strong to severe storms remain possible through this evening from the upper Mississippi Valley southward into northeast Oklahoma. A shortwave trough will shift northeastward out over the Dakotas and MN this evening, as an upper low moves northeastward across MB. Winds aloft will weaken over the area, though cooling aloft will continue spreading into the upper Great Lakes. At the surface, a weak front/wind shift extends from the main surface low over MB southward across MN and into IA, and from southeast KS into northwest OK. The strongest cells currently stretch from the MN Arrowhead southward into north central IA, with primarily discrete storm mode along the front. Farther south, a secondary area of storms persist over southeast KS into northeast OK. Tornado watch #678 continues over northwest WI this evening, where low-level shear is a bit stronger. Storms across this area may persist for several more hours before dissipating, as temperatures aloft are cooling. Farther south, Severe Thunderstorm watches #677 and #679 continue along the boundary, where storms remain within the diurnal instability axis. Temperatures aloft are quite warm here, and storms should dissipate sooner than points north. Until then, locally severe gusts or hail will be possible. For more information see mesoscale discussion #2089. ..Jewell.. 09/20/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Thu Sep 19 2024 Valid 200100Z - 201200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF THE UPPER MISSISSIPPI VALLEY INTO PARTS OF NORTHEAST OKLAHOMA... ...SUMMARY... Scattered strong to severe storms remain possible through this evening from the upper Mississippi Valley southward into northeast Oklahoma. A shortwave trough will shift northeastward out over the Dakotas and MN this evening, as an upper low moves northeastward across MB. Winds aloft will weaken over the area, though cooling aloft will continue spreading into the upper Great Lakes. At the surface, a weak front/wind shift extends from the main surface low over MB southward across MN and into IA, and from southeast KS into northwest OK. The strongest cells currently stretch from the MN Arrowhead southward into north central IA, with primarily discrete storm mode along the front. Farther south, a secondary area of storms persist over southeast KS into northeast OK. Tornado watch #678 continues over northwest WI this evening, where low-level shear is a bit stronger. Storms across this area may persist for several more hours before dissipating, as temperatures aloft are cooling. Farther south, Severe Thunderstorm watches #677 and #679 continue along the boundary, where storms remain within the diurnal instability axis. Temperatures aloft are quite warm here, and storms should dissipate sooner than points north. Until then, locally severe gusts or hail will be possible. For more information see mesoscale discussion #2089. ..Jewell.. 09/20/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Thu Sep 19 2024 Valid 200100Z - 201200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF THE UPPER MISSISSIPPI VALLEY INTO PARTS OF NORTHEAST OKLAHOMA... ...SUMMARY... Scattered strong to severe storms remain possible through this evening from the upper Mississippi Valley southward into northeast Oklahoma. A shortwave trough will shift northeastward out over the Dakotas and MN this evening, as an upper low moves northeastward across MB. Winds aloft will weaken over the area, though cooling aloft will continue spreading into the upper Great Lakes. At the surface, a weak front/wind shift extends from the main surface low over MB southward across MN and into IA, and from southeast KS into northwest OK. The strongest cells currently stretch from the MN Arrowhead southward into north central IA, with primarily discrete storm mode along the front. Farther south, a secondary area of storms persist over southeast KS into northeast OK. Tornado watch #678 continues over northwest WI this evening, where low-level shear is a bit stronger. Storms across this area may persist for several more hours before dissipating, as temperatures aloft are cooling. Farther south, Severe Thunderstorm watches #677 and #679 continue along the boundary, where storms remain within the diurnal instability axis. Temperatures aloft are quite warm here, and storms should dissipate sooner than points north. Until then, locally severe gusts or hail will be possible. For more information see mesoscale discussion #2089. ..Jewell.. 09/20/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Thu Sep 19 2024 Valid 200100Z - 201200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF THE UPPER MISSISSIPPI VALLEY INTO PARTS OF NORTHEAST OKLAHOMA... ...SUMMARY... Scattered strong to severe storms remain possible through this evening from the upper Mississippi Valley southward into northeast Oklahoma. A shortwave trough will shift northeastward out over the Dakotas and MN this evening, as an upper low moves northeastward across MB. Winds aloft will weaken over the area, though cooling aloft will continue spreading into the upper Great Lakes. At the surface, a weak front/wind shift extends from the main surface low over MB southward across MN and into IA, and from southeast KS into northwest OK. The strongest cells currently stretch from the MN Arrowhead southward into north central IA, with primarily discrete storm mode along the front. Farther south, a secondary area of storms persist over southeast KS into northeast OK. Tornado watch #678 continues over northwest WI this evening, where low-level shear is a bit stronger. Storms across this area may persist for several more hours before dissipating, as temperatures aloft are cooling. Farther south, Severe Thunderstorm watches #677 and #679 continue along the boundary, where storms remain within the diurnal instability axis. Temperatures aloft are quite warm here, and storms should dissipate sooner than points north. Until then, locally severe gusts or hail will be possible. For more information see mesoscale discussion #2089. ..Jewell.. 09/20/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Thu Sep 19 2024 Valid 200100Z - 201200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF THE UPPER MISSISSIPPI VALLEY INTO PARTS OF NORTHEAST OKLAHOMA... ...SUMMARY... Scattered strong to severe storms remain possible through this evening from the upper Mississippi Valley southward into northeast Oklahoma. A shortwave trough will shift northeastward out over the Dakotas and MN this evening, as an upper low moves northeastward across MB. Winds aloft will weaken over the area, though cooling aloft will continue spreading into the upper Great Lakes. At the surface, a weak front/wind shift extends from the main surface low over MB southward across MN and into IA, and from southeast KS into northwest OK. The strongest cells currently stretch from the MN Arrowhead southward into north central IA, with primarily discrete storm mode along the front. Farther south, a secondary area of storms persist over southeast KS into northeast OK. Tornado watch #678 continues over northwest WI this evening, where low-level shear is a bit stronger. Storms across this area may persist for several more hours before dissipating, as temperatures aloft are cooling. Farther south, Severe Thunderstorm watches #677 and #679 continue along the boundary, where storms remain within the diurnal instability axis. Temperatures aloft are quite warm here, and storms should dissipate sooner than points north. Until then, locally severe gusts or hail will be possible. For more information see mesoscale discussion #2089. ..Jewell.. 09/20/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Thu Sep 19 2024 Valid 200100Z - 201200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF THE UPPER MISSISSIPPI VALLEY INTO PARTS OF NORTHEAST OKLAHOMA... ...SUMMARY... Scattered strong to severe storms remain possible through this evening from the upper Mississippi Valley southward into northeast Oklahoma. A shortwave trough will shift northeastward out over the Dakotas and MN this evening, as an upper low moves northeastward across MB. Winds aloft will weaken over the area, though cooling aloft will continue spreading into the upper Great Lakes. At the surface, a weak front/wind shift extends from the main surface low over MB southward across MN and into IA, and from southeast KS into northwest OK. The strongest cells currently stretch from the MN Arrowhead southward into north central IA, with primarily discrete storm mode along the front. Farther south, a secondary area of storms persist over southeast KS into northeast OK. Tornado watch #678 continues over northwest WI this evening, where low-level shear is a bit stronger. Storms across this area may persist for several more hours before dissipating, as temperatures aloft are cooling. Farther south, Severe Thunderstorm watches #677 and #679 continue along the boundary, where storms remain within the diurnal instability axis. Temperatures aloft are quite warm here, and storms should dissipate sooner than points north. Until then, locally severe gusts or hail will be possible. For more information see mesoscale discussion #2089. ..Jewell.. 09/20/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Thu Sep 19 2024 Valid 200100Z - 201200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF THE UPPER MISSISSIPPI VALLEY INTO PARTS OF NORTHEAST OKLAHOMA... ...SUMMARY... Scattered strong to severe storms remain possible through this evening from the upper Mississippi Valley southward into northeast Oklahoma. A shortwave trough will shift northeastward out over the Dakotas and MN this evening, as an upper low moves northeastward across MB. Winds aloft will weaken over the area, though cooling aloft will continue spreading into the upper Great Lakes. At the surface, a weak front/wind shift extends from the main surface low over MB southward across MN and into IA, and from southeast KS into northwest OK. The strongest cells currently stretch from the MN Arrowhead southward into north central IA, with primarily discrete storm mode along the front. Farther south, a secondary area of storms persist over southeast KS into northeast OK. Tornado watch #678 continues over northwest WI this evening, where low-level shear is a bit stronger. Storms across this area may persist for several more hours before dissipating, as temperatures aloft are cooling. Farther south, Severe Thunderstorm watches #677 and #679 continue along the boundary, where storms remain within the diurnal instability axis. Temperatures aloft are quite warm here, and storms should dissipate sooner than points north. Until then, locally severe gusts or hail will be possible. For more information see mesoscale discussion #2089. ..Jewell.. 09/20/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Thu Sep 19 2024 Valid 200100Z - 201200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF THE UPPER MISSISSIPPI VALLEY INTO PARTS OF NORTHEAST OKLAHOMA... ...SUMMARY... Scattered strong to severe storms remain possible through this evening from the upper Mississippi Valley southward into northeast Oklahoma. A shortwave trough will shift northeastward out over the Dakotas and MN this evening, as an upper low moves northeastward across MB. Winds aloft will weaken over the area, though cooling aloft will continue spreading into the upper Great Lakes. At the surface, a weak front/wind shift extends from the main surface low over MB southward across MN and into IA, and from southeast KS into northwest OK. The strongest cells currently stretch from the MN Arrowhead southward into north central IA, with primarily discrete storm mode along the front. Farther south, a secondary area of storms persist over southeast KS into northeast OK. Tornado watch #678 continues over northwest WI this evening, where low-level shear is a bit stronger. Storms across this area may persist for several more hours before dissipating, as temperatures aloft are cooling. Farther south, Severe Thunderstorm watches #677 and #679 continue along the boundary, where storms remain within the diurnal instability axis. Temperatures aloft are quite warm here, and storms should dissipate sooner than points north. Until then, locally severe gusts or hail will be possible. For more information see mesoscale discussion #2089. ..Jewell.. 09/20/2024 Read more

WW 0677 Status Updates
STATUS REPORT ON WW 677 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 ENE FOD TO 35 N MCW TO 55 NNE MSP. ..THORNTON..09/19/24 ATTN...WFO...DMX...ARX...MPX... STATUS REPORT FOR WS 677 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC033-037-067-089-131-191-195-200040- IA . IOWA COUNTIES INCLUDED ARE CERRO GORDO CHICKASAW FLOYD HOWARD MITCHELL WINNESHIEK WORTH MNC039-045-047-049-055-099-109-131-147-157-163-169-200040- MN . MINNESOTA COUNTIES INCLUDED ARE DODGE FILLMORE FREEBORN GOODHUE HOUSTON MOWER OLMSTED RICE STEELE WABASHA WASHINGTON WINONA WIC005-011-017-019-033-035-053-063-091-093-095-107-109-119-121- 200040- WI Read more