Severe Storms

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1238 AM CDT Tue Aug 27 2024 Valid 271200Z - 281200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE GREAT LAKES AND PORTIONS OF THE MIDWEST... ...SUMMARY... Severe thunderstorms are possible across the Great Lakes region and portions of the Midwest. A lower risk for a few strong/severe storms will extend southwest across the lower Missouri Valley into northern Kansas. ...Great Lakes/Midwest... Seasonally strong short-wave trough is advancing into the northern High Plains early this morning. This feature is forecast to shift into the eastern Dakotas by 18z as a 500mb speed max translates across southern MN. Gradual deamplification is expected during the latter half of the period as the short wave ejects across the upper Great Lakes. At the surface, primary synoptic boundary is forecast to extend across the eastern U.P. of MI-central WI-central IA-southern NE at the start of the period. Westerly flow will deepen across the Great Lakes region by midday, and this will encourage the surface front to shift downstream as west-southwesterly LLJ strengthens across southern WI/Lower MI. Long-lived, mature MCS is currently propagating across northern/central WI, in line with latest HREF guidance. This complex of storms will track across northern Lake MI into Lower MI later this morning as it turns southeast. Convective outflow will likely influence subsequent thunderstorm development ahead of the short wave/surface front. Latest thinking is modest boundary-layer heating will extend across northern IL into extreme southern WI, east into the northern OH Valley region. This will be the northern extent of a very unstable airmass which should support afternoon thunderstorm development/intensification. It's not entirely clear where the early-day outflow will establish itself, and uncertainty necessitates some caution trying to focus higher severe probabilities. Even so, there may be a need to expand SLGT risk a bit south if the boundary advances further than currently expected. Severe gusts and hail are the primary risks with convection today. Farther southwest across the lower MO Valley into northern Kansas, very strong surface heating will negate CINH and convective temperatures will be easily breached as readings rise through the mid 90s. Isolated-scattered thunderstorms may focus along the synoptic front, though this activity will evolve within a vertical wind profile that is fairly weak and supports mostly pulse to multicell updrafts. In the absence of any short-wave trough, surface heating will prove instrumental in thunderstorm development, and the lack of a strong LLJ may also be a limiting factor in upscale growth. ..Darrow/Squitieri.. 08/27/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1238 AM CDT Tue Aug 27 2024 Valid 271200Z - 281200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE GREAT LAKES AND PORTIONS OF THE MIDWEST... ...SUMMARY... Severe thunderstorms are possible across the Great Lakes region and portions of the Midwest. A lower risk for a few strong/severe storms will extend southwest across the lower Missouri Valley into northern Kansas. ...Great Lakes/Midwest... Seasonally strong short-wave trough is advancing into the northern High Plains early this morning. This feature is forecast to shift into the eastern Dakotas by 18z as a 500mb speed max translates across southern MN. Gradual deamplification is expected during the latter half of the period as the short wave ejects across the upper Great Lakes. At the surface, primary synoptic boundary is forecast to extend across the eastern U.P. of MI-central WI-central IA-southern NE at the start of the period. Westerly flow will deepen across the Great Lakes region by midday, and this will encourage the surface front to shift downstream as west-southwesterly LLJ strengthens across southern WI/Lower MI. Long-lived, mature MCS is currently propagating across northern/central WI, in line with latest HREF guidance. This complex of storms will track across northern Lake MI into Lower MI later this morning as it turns southeast. Convective outflow will likely influence subsequent thunderstorm development ahead of the short wave/surface front. Latest thinking is modest boundary-layer heating will extend across northern IL into extreme southern WI, east into the northern OH Valley region. This will be the northern extent of a very unstable airmass which should support afternoon thunderstorm development/intensification. It's not entirely clear where the early-day outflow will establish itself, and uncertainty necessitates some caution trying to focus higher severe probabilities. Even so, there may be a need to expand SLGT risk a bit south if the boundary advances further than currently expected. Severe gusts and hail are the primary risks with convection today. Farther southwest across the lower MO Valley into northern Kansas, very strong surface heating will negate CINH and convective temperatures will be easily breached as readings rise through the mid 90s. Isolated-scattered thunderstorms may focus along the synoptic front, though this activity will evolve within a vertical wind profile that is fairly weak and supports mostly pulse to multicell updrafts. In the absence of any short-wave trough, surface heating will prove instrumental in thunderstorm development, and the lack of a strong LLJ may also be a limiting factor in upscale growth. ..Darrow/Squitieri.. 08/27/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1238 AM CDT Tue Aug 27 2024 Valid 271200Z - 281200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE GREAT LAKES AND PORTIONS OF THE MIDWEST... ...SUMMARY... Severe thunderstorms are possible across the Great Lakes region and portions of the Midwest. A lower risk for a few strong/severe storms will extend southwest across the lower Missouri Valley into northern Kansas. ...Great Lakes/Midwest... Seasonally strong short-wave trough is advancing into the northern High Plains early this morning. This feature is forecast to shift into the eastern Dakotas by 18z as a 500mb speed max translates across southern MN. Gradual deamplification is expected during the latter half of the period as the short wave ejects across the upper Great Lakes. At the surface, primary synoptic boundary is forecast to extend across the eastern U.P. of MI-central WI-central IA-southern NE at the start of the period. Westerly flow will deepen across the Great Lakes region by midday, and this will encourage the surface front to shift downstream as west-southwesterly LLJ strengthens across southern WI/Lower MI. Long-lived, mature MCS is currently propagating across northern/central WI, in line with latest HREF guidance. This complex of storms will track across northern Lake MI into Lower MI later this morning as it turns southeast. Convective outflow will likely influence subsequent thunderstorm development ahead of the short wave/surface front. Latest thinking is modest boundary-layer heating will extend across northern IL into extreme southern WI, east into the northern OH Valley region. This will be the northern extent of a very unstable airmass which should support afternoon thunderstorm development/intensification. It's not entirely clear where the early-day outflow will establish itself, and uncertainty necessitates some caution trying to focus higher severe probabilities. Even so, there may be a need to expand SLGT risk a bit south if the boundary advances further than currently expected. Severe gusts and hail are the primary risks with convection today. Farther southwest across the lower MO Valley into northern Kansas, very strong surface heating will negate CINH and convective temperatures will be easily breached as readings rise through the mid 90s. Isolated-scattered thunderstorms may focus along the synoptic front, though this activity will evolve within a vertical wind profile that is fairly weak and supports mostly pulse to multicell updrafts. In the absence of any short-wave trough, surface heating will prove instrumental in thunderstorm development, and the lack of a strong LLJ may also be a limiting factor in upscale growth. ..Darrow/Squitieri.. 08/27/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1238 AM CDT Tue Aug 27 2024 Valid 271200Z - 281200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE GREAT LAKES AND PORTIONS OF THE MIDWEST... ...SUMMARY... Severe thunderstorms are possible across the Great Lakes region and portions of the Midwest. A lower risk for a few strong/severe storms will extend southwest across the lower Missouri Valley into northern Kansas. ...Great Lakes/Midwest... Seasonally strong short-wave trough is advancing into the northern High Plains early this morning. This feature is forecast to shift into the eastern Dakotas by 18z as a 500mb speed max translates across southern MN. Gradual deamplification is expected during the latter half of the period as the short wave ejects across the upper Great Lakes. At the surface, primary synoptic boundary is forecast to extend across the eastern U.P. of MI-central WI-central IA-southern NE at the start of the period. Westerly flow will deepen across the Great Lakes region by midday, and this will encourage the surface front to shift downstream as west-southwesterly LLJ strengthens across southern WI/Lower MI. Long-lived, mature MCS is currently propagating across northern/central WI, in line with latest HREF guidance. This complex of storms will track across northern Lake MI into Lower MI later this morning as it turns southeast. Convective outflow will likely influence subsequent thunderstorm development ahead of the short wave/surface front. Latest thinking is modest boundary-layer heating will extend across northern IL into extreme southern WI, east into the northern OH Valley region. This will be the northern extent of a very unstable airmass which should support afternoon thunderstorm development/intensification. It's not entirely clear where the early-day outflow will establish itself, and uncertainty necessitates some caution trying to focus higher severe probabilities. Even so, there may be a need to expand SLGT risk a bit south if the boundary advances further than currently expected. Severe gusts and hail are the primary risks with convection today. Farther southwest across the lower MO Valley into northern Kansas, very strong surface heating will negate CINH and convective temperatures will be easily breached as readings rise through the mid 90s. Isolated-scattered thunderstorms may focus along the synoptic front, though this activity will evolve within a vertical wind profile that is fairly weak and supports mostly pulse to multicell updrafts. In the absence of any short-wave trough, surface heating will prove instrumental in thunderstorm development, and the lack of a strong LLJ may also be a limiting factor in upscale growth. ..Darrow/Squitieri.. 08/27/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1238 AM CDT Tue Aug 27 2024 Valid 271200Z - 281200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE GREAT LAKES AND PORTIONS OF THE MIDWEST... ...SUMMARY... Severe thunderstorms are possible across the Great Lakes region and portions of the Midwest. A lower risk for a few strong/severe storms will extend southwest across the lower Missouri Valley into northern Kansas. ...Great Lakes/Midwest... Seasonally strong short-wave trough is advancing into the northern High Plains early this morning. This feature is forecast to shift into the eastern Dakotas by 18z as a 500mb speed max translates across southern MN. Gradual deamplification is expected during the latter half of the period as the short wave ejects across the upper Great Lakes. At the surface, primary synoptic boundary is forecast to extend across the eastern U.P. of MI-central WI-central IA-southern NE at the start of the period. Westerly flow will deepen across the Great Lakes region by midday, and this will encourage the surface front to shift downstream as west-southwesterly LLJ strengthens across southern WI/Lower MI. Long-lived, mature MCS is currently propagating across northern/central WI, in line with latest HREF guidance. This complex of storms will track across northern Lake MI into Lower MI later this morning as it turns southeast. Convective outflow will likely influence subsequent thunderstorm development ahead of the short wave/surface front. Latest thinking is modest boundary-layer heating will extend across northern IL into extreme southern WI, east into the northern OH Valley region. This will be the northern extent of a very unstable airmass which should support afternoon thunderstorm development/intensification. It's not entirely clear where the early-day outflow will establish itself, and uncertainty necessitates some caution trying to focus higher severe probabilities. Even so, there may be a need to expand SLGT risk a bit south if the boundary advances further than currently expected. Severe gusts and hail are the primary risks with convection today. Farther southwest across the lower MO Valley into northern Kansas, very strong surface heating will negate CINH and convective temperatures will be easily breached as readings rise through the mid 90s. Isolated-scattered thunderstorms may focus along the synoptic front, though this activity will evolve within a vertical wind profile that is fairly weak and supports mostly pulse to multicell updrafts. In the absence of any short-wave trough, surface heating will prove instrumental in thunderstorm development, and the lack of a strong LLJ may also be a limiting factor in upscale growth. ..Darrow/Squitieri.. 08/27/2024 Read more

WW 0654 Status Updates
STATUS REPORT ON WW 654 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..BENTLEY..08/27/24 ATTN...WFO...FSD...LBF...OAX... STATUS REPORT FOR WS 654 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC035-041-059-119-141-143-149-167-270640- IA . IOWA COUNTIES INCLUDED ARE CHEROKEE CLAY DICKINSON LYON O'BRIEN OSCEOLA PLYMOUTH SIOUX MNC033-063-081-083-101-105-117-133-270640- MN . MINNESOTA COUNTIES INCLUDED ARE COTTONWOOD JACKSON LINCOLN LYON MURRAY NOBLES PIPESTONE ROCK NEC015-017-027-031-051-089-103-107-149-270640- NE . NEBRASKA COUNTIES INCLUDED ARE BOYD BROWN CEDAR Read more

WW 0653 Status Updates
STATUS REPORT ON WW 653 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 E VOK TO 35 NW OSH TO 35 E CWA TO 40 SE RHI TO 20 ENE RHI TO 35 NNE RHI TO 35 ESE IWD. ..BENTLEY..08/27/24 ATTN...WFO...ARX...DLH...GRB...MKX... STATUS REPORT FOR WS 653 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS WIC001-009-015-029-037-039-041-047-061-067-071-075-077-078-083- 087-115-117-135-137-139-270640- WI . WISCONSIN COUNTIES INCLUDED ARE ADAMS BROWN CALUMET DOOR FLORENCE FOND DU LAC FOREST GREEN LAKE KEWAUNEE LANGLADE MANITOWOC MARINETTE MARQUETTE MENOMINEE OCONTO OUTAGAMIE SHAWANO SHEBOYGAN WAUPACA WAUSHARA WINNEBAGO LMZ521-522-541-542-543-563-565-567-643-669-270640- CW . ADJACENT COASTAL WATERS INCLUDED ARE GREEN BAY SOUTH OF LINE FROM CEDAR RIVER TO ROCK ISLAND PASSAGE AND NORTH OF A LINE FROM OCONTO WI TO LITTLE STURGEON BAY WI Read more

MD 2009 CONCERNING SEVERE THUNDERSTORM WATCH 653... FOR PORTIONS OF CENTRAL INTO EASTERN WISCONSIN AND WESTERN UPPER MICHIGAN
Mesoscale Discussion 2009 NWS Storm Prediction Center Norman OK 1111 PM CDT Mon Aug 26 2024 Areas affected...portions of central into eastern Wisconsin and western Upper Michigan Concerning...Severe Thunderstorm Watch 653... Valid 270411Z - 270515Z The severe weather threat for Severe Thunderstorm Watch 653 continues. SUMMARY...The severe threat continues in and near Severe Thunderstorm Watch 653. Damaging wind gusts are the main threat, and this threat should persist for at least a few more hours. DISCUSSION...A mature MCS with a history of strong, damaging gusts continues to progress eastward over central WI. Given nocturnal cooling, temperatures are dropping into the 75-80F range, suggesting that MLCINH should be on the increase ahead of the MCS. While this may dampen wind damage potential to some degree, at least some threat for damaging gusts should continue for at least a few more hours given 3000-4000 J/kg MLCAPE preceding the line. ..Squitieri.. 08/27/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MQT...GRB...MKX...DLH...ARX... LAT...LON 46178996 46448979 46458927 46348845 46108776 45648732 44978720 44408728 43998750 43908797 43938859 44018925 44098958 44318974 44658968 44928962 45538968 46178996 Read more

WW 0654 Status Updates
STATUS REPORT ON WW 654 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..DEAN..08/27/24 ATTN...WFO...FSD...LBF...OAX... STATUS REPORT FOR WS 654 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC035-041-059-119-141-143-149-167-270540- IA . IOWA COUNTIES INCLUDED ARE CHEROKEE CLAY DICKINSON LYON O'BRIEN OSCEOLA PLYMOUTH SIOUX MNC033-063-081-083-101-105-117-133-270540- MN . MINNESOTA COUNTIES INCLUDED ARE COTTONWOOD JACKSON LINCOLN LYON MURRAY NOBLES PIPESTONE ROCK NEC015-017-027-031-051-089-103-107-149-270540- NE . NEBRASKA COUNTIES INCLUDED ARE BOYD BROWN CEDAR Read more

WW 0653 Status Updates
STATUS REPORT ON WW 653 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NW VOK TO 25 WNW CWA TO 30 W RHI TO 20 WSW IWD. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2009 ..SQUITIERI..08/27/24 ATTN...WFO...ARX...DLH...GRB...MKX... STATUS REPORT FOR WS 653 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS WIC001-003-009-015-029-037-039-041-047-051-057-061-067-069-071- 073-075-077-078-081-083-085-087-097-115-117-125-135-137-139-141- 270540- WI . WISCONSIN COUNTIES INCLUDED ARE ADAMS ASHLAND BROWN CALUMET DOOR FLORENCE FOND DU LAC FOREST GREEN LAKE IRON JUNEAU KEWAUNEE LANGLADE LINCOLN MANITOWOC MARATHON MARINETTE MARQUETTE MENOMINEE MONROE OCONTO ONEIDA OUTAGAMIE PORTAGE SHAWANO SHEBOYGAN VILAS WAUPACA WAUSHARA WINNEBAGO WOOD LMZ521-522-541-542-543-563-565-567-643-669-270540- CW Read more

MD 2008 CONCERNING SEVERE THUNDERSTORM WATCH 650... FOR SOUTH-CENTRAL/SOUTHEAST SD...NORTHERN NE...NORTHWEST IA...SOUTHWEST MN
Mesoscale Discussion 2008 NWS Storm Prediction Center Norman OK 0928 PM CDT Mon Aug 26 2024 Areas affected...South-central/southeast SD...northern NE...northwest IA...southwest MN Concerning...Severe Thunderstorm Watch 650... Valid 270228Z - 270400Z The severe weather threat for Severe Thunderstorm Watch 650 continues. SUMMARY...Some severe threat may continue into late tonight. New watch issuance is possible prior to 11 PM CDT. DISCUSSION...The northern portion of a long-lived QLCS has weakened across central SD, within a relatively cool/stable environment. A supercell has persisted along the southern flank of this system, and produced occasional severe wind/hail reports. Evolution of this system is uncertain with time, given that it has generally become less organized, but will also eventually move into an increasingly moist/unstable environment from northeast NE into southeast SD. Some intensification may occur with this system later tonight, with additional development possible farther southwest into northwest/north-central NE, where stronger ascent will impinge upon the region as a shortwave trough moves across the northern High Plains. Late-night storm development will also be possible near the deeper frontal zone and instability gradient from eastern SD into southwest MN. While details remain uncertain, moderate to strong buoyancy and 40-50 kt of effective shear will continue to support organized convection into late tonight, with a threat of strong/severe gusts and hail. New watch issuance is possible prior to 11 PM CDT in order to address the late-night severe threat. ..Dean/Gleason.. 08/27/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MPX...DMX...FSD...OAX...ABR...GID...LBF...UNR... LAT...LON 43090232 43939951 44749737 45429608 45299512 44719443 44069427 43619416 43049436 42549509 41629831 41740151 42170184 43090232 Read more

MD 2007 CONCERNING SEVERE THUNDERSTORM WATCH 651...653... FOR PORTIONS OF WESTERN INTO CENTRAL WISCONSIN
Mesoscale Discussion 2007 NWS Storm Prediction Center Norman OK 0919 PM CDT Mon Aug 26 2024 Areas affected...portions of western into central Wisconsin Concerning...Severe Thunderstorm Watch 651...653... Valid 270219Z - 270345Z The severe weather threat for Severe Thunderstorm Watch 651, 653 continues. SUMMARY...The severe threat continues across the remainder of Severe Thunderstorm Watch 651 into 653. Severe gusts are the main threat, with the best chances of severe gusts likely around the northern portions of the bow echo MCS. DISCUSSION...Several damage reports have been received in conjunction with an east-northeast propagating bow echo MCS over the past few hours, along with ASOS measurements in the 45-55 kt range. This bow echo will continue to traverse a diffuse baroclinic zone, riding a gradient of strong instability (i.e. 3000-4500 J/kg MLCAPE), where MLCINH remains minimal. On the northern end of this cyclonic bow echo MCS is a line-end mesovortex, where the most recent wind damage reports have been received, and where regional-radar cross-section analyses depicts the presence of a rear-inflow jet. As such, damaging gusts should continue in this regime for at least a few more hours, with some strong/damaging wind gusts also possible farther south along the line. ..Squitieri.. 08/27/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...GRB...DLH...ARX...MPX... LAT...LON 44289121 44229199 44609235 45239265 45749277 46099246 46309172 46379127 46259012 45598833 45098802 44838847 44638923 44458994 44359074 44289121 Read more

WW 0650 Status Updates
STATUS REPORT ON WW 650 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 NNW TOR TO 50 SSW PHP TO 15 S PHP TO 30 SW PIR. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2008 ..DEAN..08/27/24 ATTN...WFO...BYZ...CYS...LBF...UNR...FSD... STATUS REPORT FOR WS 650 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC013-015-017-031-045-089-103-149-161-165-270440- NE . NEBRASKA COUNTIES INCLUDED ARE BOX BUTTE BOYD BROWN CHERRY DAWES HOLT KEYA PAHA ROCK SHERIDAN SIOUX SDC007-023-053-071-095-121-123-270440- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE BENNETT CHARLES MIX GREGORY JACKSON MELLETTE TODD TRIPP THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL Read more

WW 0650 Status Updates
STATUS REPORT ON WW 650 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 NNW TOR TO 50 SSW PHP TO 15 S PHP TO 30 SW PIR. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2008 ..DEAN..08/27/24 ATTN...WFO...BYZ...CYS...LBF...UNR...FSD... STATUS REPORT FOR WS 650 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC013-015-017-031-045-089-103-149-161-165-270440- NE . NEBRASKA COUNTIES INCLUDED ARE BOX BUTTE BOYD BROWN CHERRY DAWES HOLT KEYA PAHA ROCK SHERIDAN SIOUX SDC007-023-053-071-095-121-123-270440- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE BENNETT CHARLES MIX GREGORY JACKSON MELLETTE TODD TRIPP THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL Read more

WW 0650 Status Updates
STATUS REPORT ON WW 650 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 NNW TOR TO 50 SSW PHP TO 15 S PHP TO 30 SW PIR. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2008 ..DEAN..08/27/24 ATTN...WFO...BYZ...CYS...LBF...UNR...FSD... STATUS REPORT FOR WS 650 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC013-015-017-031-045-089-103-149-161-165-270440- NE . NEBRASKA COUNTIES INCLUDED ARE BOX BUTTE BOYD BROWN CHERRY DAWES HOLT KEYA PAHA ROCK SHERIDAN SIOUX SDC007-023-053-071-095-121-123-270440- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE BENNETT CHARLES MIX GREGORY JACKSON MELLETTE TODD TRIPP THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL Read more

WW 0650 Status Updates
STATUS REPORT ON WW 650 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 NNW TOR TO 50 SSW PHP TO 15 S PHP TO 30 SW PIR. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2008 ..DEAN..08/27/24 ATTN...WFO...BYZ...CYS...LBF...UNR...FSD... STATUS REPORT FOR WS 650 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC013-015-017-031-045-089-103-149-161-165-270440- NE . NEBRASKA COUNTIES INCLUDED ARE BOX BUTTE BOYD BROWN CHERRY DAWES HOLT KEYA PAHA ROCK SHERIDAN SIOUX SDC007-023-053-071-095-121-123-270440- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE BENNETT CHARLES MIX GREGORY JACKSON MELLETTE TODD TRIPP THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL Read more

WW 0650 Status Updates
STATUS REPORT ON WW 650 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 NNW TOR TO 50 SSW PHP TO 15 S PHP TO 30 SW PIR. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2008 ..DEAN..08/27/24 ATTN...WFO...BYZ...CYS...LBF...UNR...FSD... STATUS REPORT FOR WS 650 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC013-015-017-031-045-089-103-149-161-165-270440- NE . NEBRASKA COUNTIES INCLUDED ARE BOX BUTTE BOYD BROWN CHERRY DAWES HOLT KEYA PAHA ROCK SHERIDAN SIOUX SDC007-023-053-071-095-121-123-270440- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE BENNETT CHARLES MIX GREGORY JACKSON MELLETTE TODD TRIPP THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL Read more

WW 650 SEVERE TSTM MT NE SD WY 262010Z - 270400Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 650 NWS Storm Prediction Center Norman OK 210 PM MDT Mon Aug 26 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Far Southeast Montana Northern Nebraska Western and Southern South Dakota Northeast Wyoming * Effective this Monday afternoon and evening from 210 PM until 1000 PM MDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 80 mph likely Scattered large hail and isolated very large hail events to 2.5 inches in diameter likely A tornado or two possible SUMMARY...Strong to severe thunderstorms including supercells will continue to develop this afternoon across northeast Wyoming/far southeast Montana into western South Dakota, with additional and more isolated development possible along the South Dakota/Nebraska border vicinity. Clusters of eastward-moving storms should evolve by evening, potentially as a severe-wind producing linear convective system that should move across southern South Dakota and northern Nebraska. The severe thunderstorm watch area is approximately along and 80 statute miles north and south of a line from 90 miles west of Rapid City SD to 50 miles north northeast of Oneill NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU0). 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 648...WW 649... AVIATION...A few severe thunderstorms with hail surface and aloft to 2.5 inches. Extreme turbulence and surface wind gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 25030. ...Guyer Read more

WW 0653 Status Updates
STATUS REPORT ON WW 653 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2007 ..SQUITIERI..08/27/24 ATTN...WFO...ARX...DLH...GRB...MKX... STATUS REPORT FOR WS 653 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MNC157-270340- MN . MINNESOTA COUNTIES INCLUDED ARE WABASHA WIC001-003-007-009-011-015-019-029-037-039-041-047-051-053-057- 061-067-069-071-073-075-077-078-081-083-085-087-097-099-113-115- 117-119-121-125-129-135-137-139-141-270340- WI . WISCONSIN COUNTIES INCLUDED ARE ADAMS ASHLAND BAYFIELD BROWN BUFFALO CALUMET CLARK DOOR FLORENCE FOND DU LAC FOREST GREEN LAKE IRON JACKSON JUNEAU KEWAUNEE LANGLADE LINCOLN MANITOWOC MARATHON MARINETTE MARQUETTE MENOMINEE MONROE OCONTO ONEIDA OUTAGAMIE Read more

WW 0653 Status Updates
STATUS REPORT ON WW 653 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2007 ..SQUITIERI..08/27/24 ATTN...WFO...ARX...DLH...GRB...MKX... STATUS REPORT FOR WS 653 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MNC157-270340- MN . MINNESOTA COUNTIES INCLUDED ARE WABASHA WIC001-003-007-009-011-015-019-029-037-039-041-047-051-053-057- 061-067-069-071-073-075-077-078-081-083-085-087-097-099-113-115- 117-119-121-125-129-135-137-139-141-270340- WI . WISCONSIN COUNTIES INCLUDED ARE ADAMS ASHLAND BAYFIELD BROWN BUFFALO CALUMET CLARK DOOR FLORENCE FOND DU LAC FOREST GREEN LAKE IRON JACKSON JUNEAU KEWAUNEE LANGLADE LINCOLN MANITOWOC MARATHON MARINETTE MARQUETTE MENOMINEE MONROE OCONTO ONEIDA OUTAGAMIE Read more