Severe Storms

WW 271 SEVERE TSTM IA NE 202330Z - 210500Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 271 NWS Storm Prediction Center Norman OK 630 PM CDT Mon May 20 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Extreme west central Iowa South central into east central and southeast Nebraska * Effective this Monday night from 630 PM until Midnight CDT. * Primary threats include... Scattered large hail likely with isolated very large hail events to 2 inches in diameter possible Scattered damaging wind gusts to 70 mph possible SUMMARY...Scattered thunderstorms are expected to form this evening, within an environment supporting supercells. Large hail of 1-2 inches in diameter and outflow gusts of 60-70 mph will be the main threats through early tonight. The severe thunderstorm watch area is approximately along and 55 statute miles north and south of a line from 10 miles west northwest of Kearney NE to 45 miles northeast of Lincoln 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 268...WW 269...WW 270... 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 24020. ...Thompson Read more

MD 0860 CONCERNING SEVERE THUNDERSTORM WATCH 272... FOR NORTHERN IOWA AND SOUTHERN MINNESOTA
Mesoscale Discussion 0860 NWS Storm Prediction Center Norman OK 0923 PM CDT Mon May 20 2024 Areas affected...Northern Iowa and southern Minnesota Concerning...Severe Thunderstorm Watch 272... Valid 210223Z - 210400Z The severe weather threat for Severe Thunderstorm Watch 272 continues. SUMMARY...Discrete supercells capable of producing large hail up to 2.0 inches in diameter remain possible across northern IA this evening. Damaging wind gusts could also accompany collapsing thunderstorms. DISCUSSION...A couple of discrete, right moving supercells have evolved this evening over Cherokee, Clay, and Palo Alto Counties. Recent FSD VAD profiler data indicates deep layer shear magnitudes around 50 kt. Although slightly weaker shear is likely present further east and southeast, where ongoing supercells are persisting, the discrete nature of them along a nearly stationary boundary may be supporting localized storm pressure perturbations capable of significant updraft velocities. In addition, steep mid-level lapse rates/large CAPE within the hail growth zone (00Z OAX sounding) is also contributing larger hail potential. However, as MLCINH continues to increase updraft strength should slowly diminish and hail sizes should decrease. The severe threat will continue through the late evening hours along and just behind the surface front, where some elevated supercells will also be possible. ..Barnes.. 05/21/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...ARX...MPX...DMX...FSD... LAT...LON 43289652 43379589 43559581 43569547 43909542 44249439 44279275 44369242 44189199 43759173 43359190 43029245 42879296 42809338 42609369 42419415 42279456 42149501 42299640 42769660 43289652 Read more

MD 0859 CONCERNING SEVERE POTENTIAL...WATCH LIKELY FOR PARTS OF SOUTHWESTERN NEBRASKA AND ADJACENT NORTHERN KANSAS
Mesoscale Discussion 0859 NWS Storm Prediction Center Norman OK 0825 PM CDT Mon May 20 2024 Areas affected...parts of southwestern Nebraska and adjacent northern Kansas Concerning...Severe potential...Watch likely Valid 210125Z - 210300Z Probability of Watch Issuance...80 percent SUMMARY...An intensifying supercell and perhaps small upscale growing convective cluster appears likely to continue developing eastward along a frontal zone into portions of southwestern Nebraska and adjacent northern Kansas through 10 PM-Midnight CDT. This will be accompanied by increasing potential for large hail, severe wind gusts and a few tornadoes. A new watch likely will be issued within the next hour or so. DISCUSSION...More substantive intensification of convection across northeastern Colorado is now underway, including one supercell now propagating eastward across the Akron CO vicinity. As activity continues eastward, strengthening easterly low-level updraft inflow will become increasingly unstable with deeper progression into the plains. This likely will support further upscale growth, including, at least initially, an enlarging supercell, then perhaps a gradually upscale growing cluster focused along the baroclinic zone (roughly centered around 700 mb) extending eastward near/north of the Kansas/Nebraska border vicinity. ..Kerr/Thompson.. 05/21/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...GID...LBF...GLD...BOU... LAT...LON 40930201 41000060 40679972 39699985 39580095 39680163 40140214 40930201 Read more

WW 0271 Status Updates
STATUS REPORT ON WW 271 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..KERR..05/21/24 ATTN...WFO...OAX...GID... STATUS REPORT FOR WS 271 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC085-133-210340- IA . IOWA COUNTIES INCLUDED ARE HARRISON MONONA NEC001-019-021-023-025-035-037-053-055-059-061-067-079-081-083- 093-095-097-099-109-121-125-129-131-137-141-143-151-153-155-159- 169-177-181-185-210340- NE . NEBRASKA COUNTIES INCLUDED ARE ADAMS BUFFALO BURT BUTLER CASS CLAY COLFAX DODGE DOUGLAS FILLMORE FRANKLIN GAGE HALL HAMILTON HARLAN HOWARD JEFFERSON JOHNSON KEARNEY LANCASTER MERRICK NANCE NUCKOLLS OTOE PHELPS PLATTE POLK SALINE SARPY SAUNDERS SEWARD THAYER WASHINGTON Read more

WW 0271 Status Updates
STATUS REPORT ON WW 271 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..KERR..05/21/24 ATTN...WFO...OAX...GID... STATUS REPORT FOR WS 271 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC085-133-210340- IA . IOWA COUNTIES INCLUDED ARE HARRISON MONONA NEC001-019-021-023-025-035-037-053-055-059-061-067-079-081-083- 093-095-097-099-109-121-125-129-131-137-141-143-151-153-155-159- 169-177-181-185-210340- NE . NEBRASKA COUNTIES INCLUDED ARE ADAMS BUFFALO BURT BUTLER CASS CLAY COLFAX DODGE DOUGLAS FILLMORE FRANKLIN GAGE HALL HAMILTON HARLAN HOWARD JEFFERSON JOHNSON KEARNEY LANCASTER MERRICK NANCE NUCKOLLS OTOE PHELPS PLATTE POLK SALINE SARPY SAUNDERS SEWARD THAYER WASHINGTON Read more

WW 0270 Status Updates
STATUS REPORT ON WW 270 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 W SNY TO 5 ESE TOR. ..KERR..05/21/24 ATTN...WFO...CYS... STATUS REPORT FOR WS 270 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC007-033-105-123-157-210340- NE . NEBRASKA COUNTIES INCLUDED ARE BANNER CHEYENNE KIMBALL MORRILL SCOTTS BLUFF 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 0270 Status Updates
STATUS REPORT ON WW 270 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 W SNY TO 5 ESE TOR. ..KERR..05/21/24 ATTN...WFO...CYS... STATUS REPORT FOR WS 270 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC007-033-105-123-157-210340- NE . NEBRASKA COUNTIES INCLUDED ARE BANNER CHEYENNE KIMBALL MORRILL SCOTTS BLUFF 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 0270 Status Updates
STATUS REPORT ON WW 270 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 W SNY TO 5 ESE TOR. ..KERR..05/21/24 ATTN...WFO...CYS... STATUS REPORT FOR WS 270 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC007-033-105-123-157-210340- NE . NEBRASKA COUNTIES INCLUDED ARE BANNER CHEYENNE KIMBALL MORRILL SCOTTS BLUFF 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 0270 Status Updates
STATUS REPORT ON WW 270 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 W SNY TO 5 ESE TOR. ..KERR..05/21/24 ATTN...WFO...CYS... STATUS REPORT FOR WS 270 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC007-033-105-123-157-210340- NE . NEBRASKA COUNTIES INCLUDED ARE BANNER CHEYENNE KIMBALL MORRILL SCOTTS BLUFF 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 0270 Status Updates
STATUS REPORT ON WW 270 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 W SNY TO 5 ESE TOR. ..KERR..05/21/24 ATTN...WFO...CYS... STATUS REPORT FOR WS 270 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC007-033-105-123-157-210340- NE . NEBRASKA COUNTIES INCLUDED ARE BANNER CHEYENNE KIMBALL MORRILL SCOTTS BLUFF 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 0270 Status Updates
STATUS REPORT ON WW 270 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 W SNY TO 5 ESE TOR. ..KERR..05/21/24 ATTN...WFO...CYS... STATUS REPORT FOR WS 270 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC007-033-105-123-157-210340- NE . NEBRASKA COUNTIES INCLUDED ARE BANNER CHEYENNE KIMBALL MORRILL SCOTTS BLUFF 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 270 SEVERE TSTM NE WY 202215Z - 210500Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 270 NWS Storm Prediction Center Norman OK 415 PM MDT Mon May 20 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southwest Nebraska Panhandle Southeast Wyoming * Effective this Monday afternoon and evening from 415 PM until 1100 PM MDT. * Primary threats include... Scattered large hail events to 1.5 inches in diameter possible Isolated damaging wind gusts to 70 mph possible SUMMARY...Scattered severe storms are expected to from and spread east-northeastward across southeast Wyoming and the southwest Nebraska Panhandle, with the primary threats of hail 1-1.5 inches in diameter and severe gusts of 60-70 mph. The severe thunderstorm watch area is approximately along and 70 statute miles east and west of a line from 15 miles west northwest of Scottsbluff NE to 45 miles west of Sidney 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 268...WW 269... AVIATION...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 450. Mean storm motion vector 25025. ...Thompson Read more

WW 0269 Status Updates
STATUS REPORT ON WW 269 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 E DEN TO 35 WNW AKO TO 10 SW SNY. ..KERR..05/21/24 ATTN...WFO...BOU...GLD... STATUS REPORT FOR WT 269 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-095-115-121-210340- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN PHILLIPS SEDGWICK WASHINGTON 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 0269 Status Updates
STATUS REPORT ON WW 269 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 E DEN TO 35 WNW AKO TO 10 SW SNY. ..KERR..05/21/24 ATTN...WFO...BOU...GLD... STATUS REPORT FOR WT 269 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-095-115-121-210340- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN PHILLIPS SEDGWICK WASHINGTON 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 0272 Status Updates
STATUS REPORT ON WW 272 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0860 ..BENTLEY..05/21/24 ATTN...WFO...FSD...DMX...ARX...MPX... STATUS REPORT FOR WS 272 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC021-033-035-041-047-059-063-067-081-089-091-093-109-131-141- 143-147-149-151-161-167-189-193-195-197-210340- IA . IOWA COUNTIES INCLUDED ARE BUENA VISTA CERRO GORDO CHEROKEE CLAY CRAWFORD DICKINSON EMMET FLOYD HANCOCK HOWARD HUMBOLDT IDA KOSSUTH MITCHELL O'BRIEN OSCEOLA PALO ALTO PLYMOUTH POCAHONTAS SAC SIOUX WINNEBAGO WOODBURY WORTH WRIGHT MNC013-039-043-045-047-063-091-099-109-147-157-161-165-210340- MN . MINNESOTA COUNTIES INCLUDED ARE BLUE EARTH DODGE FARIBAULT FILLMORE FREEBORN JACKSON Read more

WW 0272 Status Updates
STATUS REPORT ON WW 272 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0860 ..BENTLEY..05/21/24 ATTN...WFO...FSD...DMX...ARX...MPX... STATUS REPORT FOR WS 272 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC021-033-035-041-047-059-063-067-081-089-091-093-109-131-141- 143-147-149-151-161-167-189-193-195-197-210340- IA . IOWA COUNTIES INCLUDED ARE BUENA VISTA CERRO GORDO CHEROKEE CLAY CRAWFORD DICKINSON EMMET FLOYD HANCOCK HOWARD HUMBOLDT IDA KOSSUTH MITCHELL O'BRIEN OSCEOLA PALO ALTO PLYMOUTH POCAHONTAS SAC SIOUX WINNEBAGO WOODBURY WORTH WRIGHT MNC013-039-043-045-047-063-091-099-109-147-157-161-165-210340- MN . MINNESOTA COUNTIES INCLUDED ARE BLUE EARTH DODGE FARIBAULT FILLMORE FREEBORN JACKSON Read more

WW 0272 Status Updates
STATUS REPORT ON WW 272 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0860 ..BENTLEY..05/21/24 ATTN...WFO...FSD...DMX...ARX...MPX... STATUS REPORT FOR WS 272 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC021-033-035-041-047-059-063-067-081-089-091-093-109-131-141- 143-147-149-151-161-167-189-193-195-197-210340- IA . IOWA COUNTIES INCLUDED ARE BUENA VISTA CERRO GORDO CHEROKEE CLAY CRAWFORD DICKINSON EMMET FLOYD HANCOCK HOWARD HUMBOLDT IDA KOSSUTH MITCHELL O'BRIEN OSCEOLA PALO ALTO PLYMOUTH POCAHONTAS SAC SIOUX WINNEBAGO WOODBURY WORTH WRIGHT MNC013-039-043-045-047-063-091-099-109-147-157-161-165-210340- MN . MINNESOTA COUNTIES INCLUDED ARE BLUE EARTH DODGE FARIBAULT FILLMORE FREEBORN JACKSON Read more

WW 0272 Status Updates
STATUS REPORT ON WW 272 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0860 ..BENTLEY..05/21/24 ATTN...WFO...FSD...DMX...ARX...MPX... STATUS REPORT FOR WS 272 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC021-033-035-041-047-059-063-067-081-089-091-093-109-131-141- 143-147-149-151-161-167-189-193-195-197-210340- IA . IOWA COUNTIES INCLUDED ARE BUENA VISTA CERRO GORDO CHEROKEE CLAY CRAWFORD DICKINSON EMMET FLOYD HANCOCK HOWARD HUMBOLDT IDA KOSSUTH MITCHELL O'BRIEN OSCEOLA PALO ALTO PLYMOUTH POCAHONTAS SAC SIOUX WINNEBAGO WOODBURY WORTH WRIGHT MNC013-039-043-045-047-063-091-099-109-147-157-161-165-210340- MN . MINNESOTA COUNTIES INCLUDED ARE BLUE EARTH DODGE FARIBAULT FILLMORE FREEBORN JACKSON Read more

WW 0272 Status Updates
STATUS REPORT ON WW 272 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0860 ..BENTLEY..05/21/24 ATTN...WFO...FSD...DMX...ARX...MPX... STATUS REPORT FOR WS 272 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC021-033-035-041-047-059-063-067-081-089-091-093-109-131-141- 143-147-149-151-161-167-189-193-195-197-210340- IA . IOWA COUNTIES INCLUDED ARE BUENA VISTA CERRO GORDO CHEROKEE CLAY CRAWFORD DICKINSON EMMET FLOYD HANCOCK HOWARD HUMBOLDT IDA KOSSUTH MITCHELL O'BRIEN OSCEOLA PALO ALTO PLYMOUTH POCAHONTAS SAC SIOUX WINNEBAGO WOODBURY WORTH WRIGHT MNC013-039-043-045-047-063-091-099-109-147-157-161-165-210340- MN . MINNESOTA COUNTIES INCLUDED ARE BLUE EARTH DODGE FARIBAULT FILLMORE FREEBORN JACKSON Read more

WW 0272 Status Updates
STATUS REPORT ON WW 272 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0860 ..BENTLEY..05/21/24 ATTN...WFO...FSD...DMX...ARX...MPX... STATUS REPORT FOR WS 272 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC021-033-035-041-047-059-063-067-081-089-091-093-109-131-141- 143-147-149-151-161-167-189-193-195-197-210340- IA . IOWA COUNTIES INCLUDED ARE BUENA VISTA CERRO GORDO CHEROKEE CLAY CRAWFORD DICKINSON EMMET FLOYD HANCOCK HOWARD HUMBOLDT IDA KOSSUTH MITCHELL O'BRIEN OSCEOLA PALO ALTO PLYMOUTH POCAHONTAS SAC SIOUX WINNEBAGO WOODBURY WORTH WRIGHT MNC013-039-043-045-047-063-091-099-109-147-157-161-165-210340- MN . MINNESOTA COUNTIES INCLUDED ARE BLUE EARTH DODGE FARIBAULT FILLMORE FREEBORN JACKSON Read more