Severe Storms

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0156 AM CDT Wed Sep 25 2019 Valid 251200Z - 261200Z ...Synopsis... An upper low centered over the northern Baja Peninsula will gradually weaken today while moving slowly northward across the lower CO River Valley. Upper troughing will persist over the northern/central Plains into the Upper Midwest and Great Lakes. Surface ridging extending from the Pacific Northwest into the Great Basin will weaken through the period. ...Portions of Northern California... Although mid/upper-level winds will be weaker across northern CA compared to yesterday, there should still be a modestly enhanced surface pressure gradient across this region to support strong/gusty north-northeasterly winds this morning and perhaps continuing into the early afternoon. This will especially be the case in the higher terrain of the Coastal Ranges, where sustained winds of 15-20 mph should combine with RH values lowered to around 20%. ...Portions of Southern California... Elevated to locally critical conditions are ongoing across the higher terrain of Santa Barbara, Ventura, and Los Angeles Counties early this morning. Strong/gusty offshore surface winds will likely continue for a few more hours this morning as a modestly enhanced surface pressure gradient remains across parts of southern CA. RH recovery will remain poor owing to these winds, with values of 10-20% common. The surface pressure gradient will likely weaken through the day, leading to a gradual reduction in wind speeds. ..Gleason.. 09/25/2019 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0156 AM CDT Wed Sep 25 2019 Valid 251200Z - 261200Z ...Synopsis... An upper low centered over the northern Baja Peninsula will gradually weaken today while moving slowly northward across the lower CO River Valley. Upper troughing will persist over the northern/central Plains into the Upper Midwest and Great Lakes. Surface ridging extending from the Pacific Northwest into the Great Basin will weaken through the period. ...Portions of Northern California... Although mid/upper-level winds will be weaker across northern CA compared to yesterday, there should still be a modestly enhanced surface pressure gradient across this region to support strong/gusty north-northeasterly winds this morning and perhaps continuing into the early afternoon. This will especially be the case in the higher terrain of the Coastal Ranges, where sustained winds of 15-20 mph should combine with RH values lowered to around 20%. ...Portions of Southern California... Elevated to locally critical conditions are ongoing across the higher terrain of Santa Barbara, Ventura, and Los Angeles Counties early this morning. Strong/gusty offshore surface winds will likely continue for a few more hours this morning as a modestly enhanced surface pressure gradient remains across parts of southern CA. RH recovery will remain poor owing to these winds, with values of 10-20% common. The surface pressure gradient will likely weaken through the day, leading to a gradual reduction in wind speeds. ..Gleason.. 09/25/2019 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0156 AM CDT Wed Sep 25 2019 Valid 251200Z - 261200Z ...Synopsis... An upper low centered over the northern Baja Peninsula will gradually weaken today while moving slowly northward across the lower CO River Valley. Upper troughing will persist over the northern/central Plains into the Upper Midwest and Great Lakes. Surface ridging extending from the Pacific Northwest into the Great Basin will weaken through the period. ...Portions of Northern California... Although mid/upper-level winds will be weaker across northern CA compared to yesterday, there should still be a modestly enhanced surface pressure gradient across this region to support strong/gusty north-northeasterly winds this morning and perhaps continuing into the early afternoon. This will especially be the case in the higher terrain of the Coastal Ranges, where sustained winds of 15-20 mph should combine with RH values lowered to around 20%. ...Portions of Southern California... Elevated to locally critical conditions are ongoing across the higher terrain of Santa Barbara, Ventura, and Los Angeles Counties early this morning. Strong/gusty offshore surface winds will likely continue for a few more hours this morning as a modestly enhanced surface pressure gradient remains across parts of southern CA. RH recovery will remain poor owing to these winds, with values of 10-20% common. The surface pressure gradient will likely weaken through the day, leading to a gradual reduction in wind speeds. ..Gleason.. 09/25/2019 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1235 AM CDT Wed Sep 25 2019 Valid 261200Z - 271200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms will be possible Thursday and Thursday night across much of the southern tier of the U.S. The strongest should occur during the overnight period from the central Plains into the lower Missouri Valley. No severe threat is expected. ...Discussion... An upper-level trough will move across the Northeast on Thursday as another upper-level trough digs southeastward into the Rockies Thursday night. Moisture advection will take place across the southern and central Plains through Thursday night as mid-level flow transitions to west-southwesterly. Elevated thunderstorms with potential for small hail will likely develop Thursday night from northeast Kansas into northern Missouri and southern Iowa on the nose of a low-level jet. This activity is expected to remain sub-severe. Elsewhere, isolated to scattered thunderstorm development will likely take place Thursday afternoon from the Desert Southwest into the southern Rockies and in parts of the Southeast. This convection is also expected to remain sub-severe mainly due to weak instability. ...MAXIMUM RISK BY HAZARD... Tornado: <2% - None Wind: <5% - None Hail: <5% - None ..Broyles.. 09/25/2019 Read more

SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1235 AM CDT Wed Sep 25 2019 Valid 261200Z - 271200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms will be possible Thursday and Thursday night across much of the southern tier of the U.S. The strongest should occur during the overnight period from the central Plains into the lower Missouri Valley. No severe threat is expected. ...Discussion... An upper-level trough will move across the Northeast on Thursday as another upper-level trough digs southeastward into the Rockies Thursday night. Moisture advection will take place across the southern and central Plains through Thursday night as mid-level flow transitions to west-southwesterly. Elevated thunderstorms with potential for small hail will likely develop Thursday night from northeast Kansas into northern Missouri and southern Iowa on the nose of a low-level jet. This activity is expected to remain sub-severe. Elsewhere, isolated to scattered thunderstorm development will likely take place Thursday afternoon from the Desert Southwest into the southern Rockies and in parts of the Southeast. This convection is also expected to remain sub-severe mainly due to weak instability. ...MAXIMUM RISK BY HAZARD... Tornado: <2% - None Wind: <5% - None Hail: <5% - None ..Broyles.. 09/25/2019 Read more

SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1235 AM CDT Wed Sep 25 2019 Valid 261200Z - 271200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms will be possible Thursday and Thursday night across much of the southern tier of the U.S. The strongest should occur during the overnight period from the central Plains into the lower Missouri Valley. No severe threat is expected. ...Discussion... An upper-level trough will move across the Northeast on Thursday as another upper-level trough digs southeastward into the Rockies Thursday night. Moisture advection will take place across the southern and central Plains through Thursday night as mid-level flow transitions to west-southwesterly. Elevated thunderstorms with potential for small hail will likely develop Thursday night from northeast Kansas into northern Missouri and southern Iowa on the nose of a low-level jet. This activity is expected to remain sub-severe. Elsewhere, isolated to scattered thunderstorm development will likely take place Thursday afternoon from the Desert Southwest into the southern Rockies and in parts of the Southeast. This convection is also expected to remain sub-severe mainly due to weak instability. ...MAXIMUM RISK BY HAZARD... Tornado: <2% - None Wind: <5% - None Hail: <5% - None ..Broyles.. 09/25/2019 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1159 PM CDT Tue Sep 24 2019 Valid 251200Z - 261200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS THE OZARKS AND WESTWARD INTO OKLAHOMA/SOUTEAST KANSAS...AND OVER SOUTHERN ARIZONA... ...SUMMARY... A few strong storms with gusty winds and hail are possible over parts of southern Kansas/Missouri and northern Oklahoma/Arkansas, as well as across parts of Arizona on Wednesday afternoon and evening. ...Synopsis... Broad upper troughing/cyclonic flow is expected to persist over the northern half of the U.S. today, while an upper low lingers across southern California/southern Arizona and adjacent northwest Mexico. At the surface, a cold front is forecast to advance east-northeastward across the Great Lakes and into eastern Canada, while sagging more slowly southward across the central U.S. By latter stages of the period, the front should extend from the lower Great Lakes/Ohio Valley westward to Oklahoma and the Texas Panhandle region. This front -- and the southwest U.S. low -- will focus the two main areas of convection this period. ...Southeast KS/northern and eastern OK/southern MO/northern AR... Daytime heating of a very moist pre-frontal boundary layer will contribute to strong destabilization across parts of Kansas/Oklahoma, and eastward into parts of Arkansas and southern Missouri. Some convection may be ongoing at the start of the period across the region, with redevelopment of storms expected by early afternoon -- near both the sagging front, as well as remnant convective outflows. Though deep-layer shear will not be particularly strong, moderate/veering flow with height will likely -- given the favorable background thermodynamic environment -- contribute to a few stronger storms, that may grow upscale and congeal later in the afternoon/evening. Hail will be possible with a stronger storm or two, with a few wind gusts reaching severe levels also possible -- especially if clustering can occur. In addition, a tornado cannot be ruled out, given modest amounts of low-level veering/shear expected. Some severe potential may linger into the overnight hours, as continues to advance slowly southward. ...Southern AZ... Relatively cool mid-level air will linger over Arizona, in conjunction with the upper low lingering over northern portions of the Gulf of California. In conjunction with diurnal heating/destabilization, thunderstorm development is expected to increase during the afternoon, with a few stronger storms possibly evolving -- aided by a belt of enhanced southerly mid-level flow on the east side of the low. Along with some risk for marginal hail, gusty outflow winds will be possible. ..Goss/Gleason.. 09/25/2019 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1159 PM CDT Tue Sep 24 2019 Valid 251200Z - 261200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS THE OZARKS AND WESTWARD INTO OKLAHOMA/SOUTEAST KANSAS...AND OVER SOUTHERN ARIZONA... ...SUMMARY... A few strong storms with gusty winds and hail are possible over parts of southern Kansas/Missouri and northern Oklahoma/Arkansas, as well as across parts of Arizona on Wednesday afternoon and evening. ...Synopsis... Broad upper troughing/cyclonic flow is expected to persist over the northern half of the U.S. today, while an upper low lingers across southern California/southern Arizona and adjacent northwest Mexico. At the surface, a cold front is forecast to advance east-northeastward across the Great Lakes and into eastern Canada, while sagging more slowly southward across the central U.S. By latter stages of the period, the front should extend from the lower Great Lakes/Ohio Valley westward to Oklahoma and the Texas Panhandle region. This front -- and the southwest U.S. low -- will focus the two main areas of convection this period. ...Southeast KS/northern and eastern OK/southern MO/northern AR... Daytime heating of a very moist pre-frontal boundary layer will contribute to strong destabilization across parts of Kansas/Oklahoma, and eastward into parts of Arkansas and southern Missouri. Some convection may be ongoing at the start of the period across the region, with redevelopment of storms expected by early afternoon -- near both the sagging front, as well as remnant convective outflows. Though deep-layer shear will not be particularly strong, moderate/veering flow with height will likely -- given the favorable background thermodynamic environment -- contribute to a few stronger storms, that may grow upscale and congeal later in the afternoon/evening. Hail will be possible with a stronger storm or two, with a few wind gusts reaching severe levels also possible -- especially if clustering can occur. In addition, a tornado cannot be ruled out, given modest amounts of low-level veering/shear expected. Some severe potential may linger into the overnight hours, as continues to advance slowly southward. ...Southern AZ... Relatively cool mid-level air will linger over Arizona, in conjunction with the upper low lingering over northern portions of the Gulf of California. In conjunction with diurnal heating/destabilization, thunderstorm development is expected to increase during the afternoon, with a few stronger storms possibly evolving -- aided by a belt of enhanced southerly mid-level flow on the east side of the low. Along with some risk for marginal hail, gusty outflow winds will be possible. ..Goss/Gleason.. 09/25/2019 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1159 PM CDT Tue Sep 24 2019 Valid 251200Z - 261200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS THE OZARKS AND WESTWARD INTO OKLAHOMA/SOUTEAST KANSAS...AND OVER SOUTHERN ARIZONA... ...SUMMARY... A few strong storms with gusty winds and hail are possible over parts of southern Kansas/Missouri and northern Oklahoma/Arkansas, as well as across parts of Arizona on Wednesday afternoon and evening. ...Synopsis... Broad upper troughing/cyclonic flow is expected to persist over the northern half of the U.S. today, while an upper low lingers across southern California/southern Arizona and adjacent northwest Mexico. At the surface, a cold front is forecast to advance east-northeastward across the Great Lakes and into eastern Canada, while sagging more slowly southward across the central U.S. By latter stages of the period, the front should extend from the lower Great Lakes/Ohio Valley westward to Oklahoma and the Texas Panhandle region. This front -- and the southwest U.S. low -- will focus the two main areas of convection this period. ...Southeast KS/northern and eastern OK/southern MO/northern AR... Daytime heating of a very moist pre-frontal boundary layer will contribute to strong destabilization across parts of Kansas/Oklahoma, and eastward into parts of Arkansas and southern Missouri. Some convection may be ongoing at the start of the period across the region, with redevelopment of storms expected by early afternoon -- near both the sagging front, as well as remnant convective outflows. Though deep-layer shear will not be particularly strong, moderate/veering flow with height will likely -- given the favorable background thermodynamic environment -- contribute to a few stronger storms, that may grow upscale and congeal later in the afternoon/evening. Hail will be possible with a stronger storm or two, with a few wind gusts reaching severe levels also possible -- especially if clustering can occur. In addition, a tornado cannot be ruled out, given modest amounts of low-level veering/shear expected. Some severe potential may linger into the overnight hours, as continues to advance slowly southward. ...Southern AZ... Relatively cool mid-level air will linger over Arizona, in conjunction with the upper low lingering over northern portions of the Gulf of California. In conjunction with diurnal heating/destabilization, thunderstorm development is expected to increase during the afternoon, with a few stronger storms possibly evolving -- aided by a belt of enhanced southerly mid-level flow on the east side of the low. Along with some risk for marginal hail, gusty outflow winds will be possible. ..Goss/Gleason.. 09/25/2019 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1159 PM CDT Tue Sep 24 2019 Valid 251200Z - 261200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS THE OZARKS AND WESTWARD INTO OKLAHOMA/SOUTEAST KANSAS...AND OVER SOUTHERN ARIZONA... ...SUMMARY... A few strong storms with gusty winds and hail are possible over parts of southern Kansas/Missouri and northern Oklahoma/Arkansas, as well as across parts of Arizona on Wednesday afternoon and evening. ...Synopsis... Broad upper troughing/cyclonic flow is expected to persist over the northern half of the U.S. today, while an upper low lingers across southern California/southern Arizona and adjacent northwest Mexico. At the surface, a cold front is forecast to advance east-northeastward across the Great Lakes and into eastern Canada, while sagging more slowly southward across the central U.S. By latter stages of the period, the front should extend from the lower Great Lakes/Ohio Valley westward to Oklahoma and the Texas Panhandle region. This front -- and the southwest U.S. low -- will focus the two main areas of convection this period. ...Southeast KS/northern and eastern OK/southern MO/northern AR... Daytime heating of a very moist pre-frontal boundary layer will contribute to strong destabilization across parts of Kansas/Oklahoma, and eastward into parts of Arkansas and southern Missouri. Some convection may be ongoing at the start of the period across the region, with redevelopment of storms expected by early afternoon -- near both the sagging front, as well as remnant convective outflows. Though deep-layer shear will not be particularly strong, moderate/veering flow with height will likely -- given the favorable background thermodynamic environment -- contribute to a few stronger storms, that may grow upscale and congeal later in the afternoon/evening. Hail will be possible with a stronger storm or two, with a few wind gusts reaching severe levels also possible -- especially if clustering can occur. In addition, a tornado cannot be ruled out, given modest amounts of low-level veering/shear expected. Some severe potential may linger into the overnight hours, as continues to advance slowly southward. ...Southern AZ... Relatively cool mid-level air will linger over Arizona, in conjunction with the upper low lingering over northern portions of the Gulf of California. In conjunction with diurnal heating/destabilization, thunderstorm development is expected to increase during the afternoon, with a few stronger storms possibly evolving -- aided by a belt of enhanced southerly mid-level flow on the east side of the low. Along with some risk for marginal hail, gusty outflow winds will be possible. ..Goss/Gleason.. 09/25/2019 Read more

MD 2018 CONCERNING TORNADO WATCH 660... FOR SOUTHERN IA
Mesoscale Discussion 2018 NWS Storm Prediction Center Norman OK 1124 PM CDT Tue Sep 24 2019 Areas affected...Southern IA Concerning...Tornado Watch 660... Valid 250424Z - 250530Z The severe weather threat for Tornado Watch 660 continues. SUMMARY...A few strong storms will linger across southern Iowa for the next few hours. Tornado threat is now very low. DISCUSSION...Earlier severe thunderstorm activity that developed over eastern NE/western IA have since shifted east and weakened considerably. Veered LLJ remains focused across WI but adequate inflow ahead of the front over southern IA should maintain ongoing convection for the next several hours. Aside from gusty winds and small hail, locally heavy rain appears to be the primary threat into the early morning hours. ..Darrow.. 09/25/2019 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...DMX...OAX... LAT...LON 40929560 41589393 41109325 40679411 40599526 40929560 Read more

MD 2017 CONCERNING TORNADO WATCH 662... FOR SOUTHEAST MN...WI
Mesoscale Discussion 2017 NWS Storm Prediction Center Norman OK 1048 PM CDT Tue Sep 24 2019 Areas affected...Southeast MN...WI Concerning...Tornado Watch 662... Valid 250348Z - 250545Z The severe weather threat for Tornado Watch 662 continues. SUMMARY...Severe threat is waning across ww562. DISCUSSION...Extensive convective overturning across the northern two-thirds of the watch has greatly reduced the threat for strong convection the rest of the night. A few strong storms linger across La Crosse/Monroe County and this activity should track east and slowly weaken over the next hour or so. Much drier and more stable boundary-layer conditions currently reside across southern WI and inflow trajectories will become increasingly hostile for robust updrafts across this region. ..Darrow.. 09/25/2019 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MQT...GRB...MKX...DLH...ARX...MPX... LAT...LON 43599208 47029087 47048787 43618929 43599208 Read more

WW 0661 Status Updates
STATUS REPORT ON WW 661 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 N TOP TO 30 N MHK TO 35 W BIE. ..GLEASON..09/25/19 ATTN...WFO...TOP...OAX... STATUS REPORT FOR WS 661 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC013-117-131-250440- KS . KANSAS COUNTIES INCLUDED ARE BROWN MARSHALL NEMAHA NEC067-095-097-109-127-131-133-147-151-250440- NE . NEBRASKA COUNTIES INCLUDED ARE GAGE JEFFERSON JOHNSON LANCASTER NEMAHA OTOE PAWNEE RICHARDSON SALINE 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 661 SEVERE TSTM KS NE 242245Z - 250500Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 661 NWS Storm Prediction Center Norman OK 545 PM CDT Tue Sep 24 2019 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeast Kansas Southeast Nebraska * Effective this Tuesday afternoon from 545 PM until Midnight CDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Isolated damaging wind gusts to 70 mph possible A tornado or two possible SUMMARY...A few supercells should develop into northeast Kansas and possibly southeast Nebraska with the primary threats being large hail and isolated severe wind gusts. The severe thunderstorm watch area is approximately along and 50 statute miles north and south of a line from 15 miles southwest of Concordia KS to 60 miles east southeast of Beatrice NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). 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 659...WW 660... AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27035. ...Grams Read more

WW 0662 Status Updates
STATUS REPORT ON WW 662 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 ENE RST TO 35 ESE EAU TO 10 SSW CMX. ..SPC..09/25/19 ATTN...WFO...ARX...MQT...DLH...GRB... STATUS REPORT FOR WT 662 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC005-191-250340- IA . IOWA COUNTIES INCLUDED ARE ALLAMAKEE WINNESHIEK MIC013-053-061-071-131-250340- MI . MICHIGAN COUNTIES INCLUDED ARE BARAGA GOGEBIC HOUGHTON IRON ONTONAGON MNC055-250340- MN . MINNESOTA COUNTIES INCLUDED ARE HOUSTON Read more

WW 0662 Status Updates
STATUS REPORT ON WW 662 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 ENE RST TO 35 ESE EAU TO 10 SSW CMX. ..SPC..09/25/19 ATTN...WFO...ARX...MQT...DLH...GRB... STATUS REPORT FOR WT 662 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC005-191-250340- IA . IOWA COUNTIES INCLUDED ARE ALLAMAKEE WINNESHIEK MIC013-053-061-071-131-250340- MI . MICHIGAN COUNTIES INCLUDED ARE BARAGA GOGEBIC HOUGHTON IRON ONTONAGON MNC055-250340- MN . MINNESOTA COUNTIES INCLUDED ARE HOUSTON Read more

WW 662 TORNADO IA MI MN WI LS 250015Z - 250500Z
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 662 NWS Storm Prediction Center Norman OK 715 PM CDT Tue Sep 24 2019 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Far northeast Iowa Western Upper Michigan Far southeast Minnesota Central and northern Wisconsin Lake Superior * Effective this Tuesday night from 715 PM until Midnight CDT. * Primary threats include... A few tornadoes and a couple intense tornadoes possible Scattered damaging winds and isolated significant gusts to 75 mph possible Scattered large hail and isolated very large hail events to 2.5 inches in diameter possible SUMMARY...Multiple supercells will pose a risk for large hail and a few tornadoes, with a broader linear cluster likely evolving towards late evening with the severe threat transitioning to primarily damaging winds. The tornado watch area is approximately along and 70 statute miles east and west of a line from 30 miles southwest of Camp Douglas WI to 50 miles northeast of Ironwood MI. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU2). 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 659...WW 660...WW 661... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 26045. ...Grams Read more

WW 0660 Status Updates
STATUS REPORT ON WW 660 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NNW LNK TO 40 E MCW. ..SPC..09/25/19 ATTN...WFO...DMX...FSD...ARX...OAX...MPX... STATUS REPORT FOR WT 660 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC001-003-009-015-023-027-029-037-039-049-067-069-071-073-075- 077-079-083-085-089-099-121-127-129-137-145-153-155-159-165-169- 173-175-181-187-197-250340- IA . IOWA COUNTIES INCLUDED ARE ADAIR ADAMS AUDUBON BOONE BUTLER CARROLL CASS CHICKASAW CLARKE DALLAS FLOYD FRANKLIN FREMONT GREENE GRUNDY GUTHRIE HAMILTON HARDIN HARRISON HOWARD JASPER MADISON MARSHALL MILLS MONTGOMERY PAGE POLK POTTAWATTAMIE RINGGOLD SHELBY STORY TAYLOR UNION WARREN WEBSTER WRIGHT MNC045-169-250340- MN . MINNESOTA COUNTIES INCLUDED ARE Read more

WW 0660 Status Updates
STATUS REPORT ON WW 660 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NNW LNK TO 40 E MCW. ..SPC..09/25/19 ATTN...WFO...DMX...FSD...ARX...OAX...MPX... STATUS REPORT FOR WT 660 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC001-003-009-015-023-027-029-037-039-049-067-069-071-073-075- 077-079-083-085-089-099-121-127-129-137-145-153-155-159-165-169- 173-175-181-187-197-250340- IA . IOWA COUNTIES INCLUDED ARE ADAIR ADAMS AUDUBON BOONE BUTLER CARROLL CASS CHICKASAW CLARKE DALLAS FLOYD FRANKLIN FREMONT GREENE GRUNDY GUTHRIE HAMILTON HARDIN HARRISON HOWARD JASPER MADISON MARSHALL MILLS MONTGOMERY PAGE POLK POTTAWATTAMIE RINGGOLD SHELBY STORY TAYLOR UNION WARREN WEBSTER WRIGHT MNC045-169-250340- MN . MINNESOTA COUNTIES INCLUDED ARE Read more

WW 660 TORNADO IA MN NE WI 242145Z - 250500Z
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 660 NWS Storm Prediction Center Norman OK 445 PM CDT Tue Sep 24 2019 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Western and central Iowa Southern and east-central Minnesota Eastern Nebraska West-central Wisconsin * Effective this Tuesday afternoon from 445 PM until Midnight CDT. * Primary threats include... A few tornadoes likely with a couple intense tornadoes possible Scattered large hail and isolated very large hail events to 3 inches in diameter likely Scattered damaging winds likely with isolated significant gusts to 80 mph possible SUMMARY...Several supercells are expected to develop from eastern Nebraska and western Iowa northeast across southern Minnesota into west-central Wisconsin this evening, capable of producing all severe thunderstorm hazards. The greater tornado threat should exist from northern Iowa across southern Minnesota into west-central Wisconsin. The tornado watch area is approximately along and 80 statute miles east and west of a line from 5 miles west of Shenandoah IA to 50 miles north northeast of Minneapolis MN. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU0). 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 659... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 3 inches. Extreme turbulence and surface wind gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 26040. ...Grams Read more