Severe Storms

WW 0576 Status Updates
STATUS REPORT ON WW 576 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SW OTM TO 20 NE DSM TO 25 N OTM. WW 576 WILL BE ALLOWED TO EXPIRE AT 311200Z. ..GRAMS..07/31/24 ATTN...WFO...DMX...OAX... STATUS REPORT FOR WS 576 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC007-051-099-123-125-135-179-311200- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE DAVIS JASPER MAHASKA MARION MONROE WAPELLO 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 0576 Status Updates
STATUS REPORT ON WW 576 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SW OTM TO 20 NE DSM TO 25 N OTM. WW 576 WILL BE ALLOWED TO EXPIRE AT 311200Z. ..GRAMS..07/31/24 ATTN...WFO...DMX...OAX... STATUS REPORT FOR WS 576 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC007-051-099-123-125-135-179-311200- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE DAVIS JASPER MAHASKA MARION MONROE WAPELLO 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 0576 Status Updates
STATUS REPORT ON WW 576 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SW OTM TO 20 NE DSM TO 25 N OTM. WW 576 WILL BE ALLOWED TO EXPIRE AT 311200Z. ..GRAMS..07/31/24 ATTN...WFO...DMX...OAX... STATUS REPORT FOR WS 576 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC007-051-099-123-125-135-179-311200- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE DAVIS JASPER MAHASKA MARION MONROE WAPELLO 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 0576 Status Updates
STATUS REPORT ON WW 576 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SW OTM TO 20 NE DSM TO 25 N OTM. WW 576 WILL BE ALLOWED TO EXPIRE AT 311200Z. ..GRAMS..07/31/24 ATTN...WFO...DMX...OAX... STATUS REPORT FOR WS 576 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC007-051-099-123-125-135-179-311200- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE DAVIS JASPER MAHASKA MARION MONROE WAPELLO 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 0576 Status Updates
STATUS REPORT ON WW 576 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SW OTM TO 20 NE DSM TO 25 N OTM. WW 576 WILL BE ALLOWED TO EXPIRE AT 311200Z. ..GRAMS..07/31/24 ATTN...WFO...DMX...OAX... STATUS REPORT FOR WS 576 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC007-051-099-123-125-135-179-311200- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE DAVIS JASPER MAHASKA MARION MONROE WAPELLO 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 0576 Status Updates
STATUS REPORT ON WW 576 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SW OTM TO 20 NE DSM TO 25 N OTM. WW 576 WILL BE ALLOWED TO EXPIRE AT 311200Z. ..GRAMS..07/31/24 ATTN...WFO...DMX...OAX... STATUS REPORT FOR WS 576 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC007-051-099-123-125-135-179-311200- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE DAVIS JASPER MAHASKA MARION MONROE WAPELLO 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 576 SEVERE TSTM IA NE 310455Z - 311200Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 576 NWS Storm Prediction Center Norman OK 1155 PM CDT Tue Jul 30 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and Western Iowa Eastern Nebraska * Effective this Tuesday night and Wednesday morning from 1155 PM until 700 AM CDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter likely Scattered damaging wind gusts to 70 mph likely A tornado or two possible SUMMARY...Thunderstorms are expected to form during the overnight hours across eastern Nebraska and western Iowa, tracking across the watch area. Very unstable conditions will promote a risk of a few severe storms capable of large hail and damaging winds. The severe thunderstorm watch area is approximately along and 60 statute miles north and south of a line from 50 miles west of Tekamah NE to 25 miles north of Ottumwa IA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU6). 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 575... 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 28030. ...Hart Read more

WW 0578 Status Updates
STATUS FOR WATCH 0578 HAS NOT BEEN ISSUED YET Read more

WW 0578 Status Updates
STATUS FOR WATCH 0578 HAS NOT BEEN ISSUED YET Read more

WW 0577 Status Updates
STATUS REPORT ON WW 577 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1762. ..GRAMS..07/31/24 ATTN...WFO...DVN...LSX... STATUS REPORT FOR WS 577 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ILC001-067-071-109-131-187-311140- IL . ILLINOIS COUNTIES INCLUDED ARE ADAMS HANCOCK HENDERSON MCDONOUGH MERCER WARREN IAC057-087-095-101-103-107-111-115-139-177-183-311140- IA . IOWA COUNTIES INCLUDED ARE DES MOINES HENRY IOWA JEFFERSON JOHNSON KEOKUK LEE LOUISA MUSCATINE VAN BUREN WASHINGTON MOC045-103-111-199-311140- MO . MISSOURI COUNTIES INCLUDED ARE Read more

WW 0576 Status Updates
STATUS REPORT ON WW 576 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 ENE LWD TO 35 SSE FOD TO 35 W CID. ..GRAMS..07/31/24 ATTN...WFO...DMX...OAX... STATUS REPORT FOR WS 576 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC007-051-099-117-123-125-135-153-157-179-181-185-311140- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE DAVIS JASPER LUCAS MAHASKA MARION MONROE POLK POWESHIEK WAPELLO WARREN WAYNE 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 0576 Status Updates
STATUS REPORT ON WW 576 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 NW LWD TO 35 SSW FOD TO 40 W CID. ..GRAMS..07/31/24 ATTN...WFO...DMX...OAX... STATUS REPORT FOR WS 576 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC007-015-039-049-051-053-073-099-117-121-123-125-135-153-157- 169-179-181-185-311040- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE BOONE CLARKE DALLAS DAVIS DECATUR GREENE JASPER LUCAS MADISON MAHASKA MARION MONROE POLK POWESHIEK STORY WAPELLO WARREN WAYNE THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

MD 1761 CONCERNING SEVERE THUNDERSTORM WATCH 576... FOR SOUTH-CENTRAL/SOUTHEAST IA...NORTHEAST MO...WEST-CENTRAL IL
Mesoscale Discussion 1761 NWS Storm Prediction Center Norman OK 0231 AM CDT Wed Jul 31 2024 Areas affected...south-central/southeast IA...northeast MO...west-central IL Concerning...Severe Thunderstorm Watch 576... Valid 310731Z - 310930Z The severe weather threat for Severe Thunderstorm Watch 576 continues. SUMMARY...An isolated large hail and localized damaging wind threat in the greater Des Moines metro area may shift southeast through dawn, with increasing potential for severe gusts. An additional severe thunderstorm watch issuance may be needed to the east-southeast of WW 576. DISCUSSION...Convection has largely congealed over the greater Des Moines metro area within the exit region of a southwesterly low-level jet. This convection has only produced reported hail up to 1.25 inches in diameter, despite deep convective cores characterized by echo tops to 60 kft and cold cloud-top temperatures in IR imagery. Given how deep this cluster has become, and with additional cells forming along its southern flank, a strengthening surface cold pool should develop over the next couple hours. Within the prevailing westerly mid-level flow regime per DMX VWP data, this should yield a southeastward movement to the cluster along the pronounced MLCAPE gradient. Potential acceleration would yield a corresponding increase in the severe gust threat, that should spread southeast towards a portion of the Mid-MO Valley later this morning. ..Grams/Guyer.. 07/31/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...ILX...LSX...DVN...DMX...EAX... LAT...LON 41649457 42029423 41879356 41459189 40799054 40319049 40129071 39909118 39989213 40399331 41429445 41649457 Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0401 AM CDT Wed Jul 31 2024 Valid 031200Z - 081200Z ...DISCUSSION... The extended period will begin with a large amplitude upper-level ridge across the western CONUS. This ridge will gradually breakdown on Sunday and Monday with more of a flat ridge by the middle of next week. Persistent northwesterly flow across the Northern Plains/Upper Midwest during the extended forecast period may result in some isolated severe weather threat. However, moisture in the Northern Plains will lack a Gulf of Mexico connection and thus, will likely be somewhat low quality, at least initially. Early next week, as lee troughing returns to the Plains and the low-level jet strengthens, the severe weather threat may increase somewhat. Overall, upper-level ridging and no clear strong troughs during the extended period, suggests any severe weather threat that materializes will likely remain somewhat localized this weekend and early next week. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0401 AM CDT Wed Jul 31 2024 Valid 031200Z - 081200Z ...DISCUSSION... The extended period will begin with a large amplitude upper-level ridge across the western CONUS. This ridge will gradually breakdown on Sunday and Monday with more of a flat ridge by the middle of next week. Persistent northwesterly flow across the Northern Plains/Upper Midwest during the extended forecast period may result in some isolated severe weather threat. However, moisture in the Northern Plains will lack a Gulf of Mexico connection and thus, will likely be somewhat low quality, at least initially. Early next week, as lee troughing returns to the Plains and the low-level jet strengthens, the severe weather threat may increase somewhat. Overall, upper-level ridging and no clear strong troughs during the extended period, suggests any severe weather threat that materializes will likely remain somewhat localized this weekend and early next week. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0401 AM CDT Wed Jul 31 2024 Valid 031200Z - 081200Z ...DISCUSSION... The extended period will begin with a large amplitude upper-level ridge across the western CONUS. This ridge will gradually breakdown on Sunday and Monday with more of a flat ridge by the middle of next week. Persistent northwesterly flow across the Northern Plains/Upper Midwest during the extended forecast period may result in some isolated severe weather threat. However, moisture in the Northern Plains will lack a Gulf of Mexico connection and thus, will likely be somewhat low quality, at least initially. Early next week, as lee troughing returns to the Plains and the low-level jet strengthens, the severe weather threat may increase somewhat. Overall, upper-level ridging and no clear strong troughs during the extended period, suggests any severe weather threat that materializes will likely remain somewhat localized this weekend and early next week. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0401 AM CDT Wed Jul 31 2024 Valid 031200Z - 081200Z ...DISCUSSION... The extended period will begin with a large amplitude upper-level ridge across the western CONUS. This ridge will gradually breakdown on Sunday and Monday with more of a flat ridge by the middle of next week. Persistent northwesterly flow across the Northern Plains/Upper Midwest during the extended forecast period may result in some isolated severe weather threat. However, moisture in the Northern Plains will lack a Gulf of Mexico connection and thus, will likely be somewhat low quality, at least initially. Early next week, as lee troughing returns to the Plains and the low-level jet strengthens, the severe weather threat may increase somewhat. Overall, upper-level ridging and no clear strong troughs during the extended period, suggests any severe weather threat that materializes will likely remain somewhat localized this weekend and early next week. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0401 AM CDT Wed Jul 31 2024 Valid 031200Z - 081200Z ...DISCUSSION... The extended period will begin with a large amplitude upper-level ridge across the western CONUS. This ridge will gradually breakdown on Sunday and Monday with more of a flat ridge by the middle of next week. Persistent northwesterly flow across the Northern Plains/Upper Midwest during the extended forecast period may result in some isolated severe weather threat. However, moisture in the Northern Plains will lack a Gulf of Mexico connection and thus, will likely be somewhat low quality, at least initially. Early next week, as lee troughing returns to the Plains and the low-level jet strengthens, the severe weather threat may increase somewhat. Overall, upper-level ridging and no clear strong troughs during the extended period, suggests any severe weather threat that materializes will likely remain somewhat localized this weekend and early next week. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0401 AM CDT Wed Jul 31 2024 Valid 031200Z - 081200Z ...DISCUSSION... The extended period will begin with a large amplitude upper-level ridge across the western CONUS. This ridge will gradually breakdown on Sunday and Monday with more of a flat ridge by the middle of next week. Persistent northwesterly flow across the Northern Plains/Upper Midwest during the extended forecast period may result in some isolated severe weather threat. However, moisture in the Northern Plains will lack a Gulf of Mexico connection and thus, will likely be somewhat low quality, at least initially. Early next week, as lee troughing returns to the Plains and the low-level jet strengthens, the severe weather threat may increase somewhat. Overall, upper-level ridging and no clear strong troughs during the extended period, suggests any severe weather threat that materializes will likely remain somewhat localized this weekend and early next week. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0401 AM CDT Wed Jul 31 2024 Valid 031200Z - 081200Z ...DISCUSSION... The extended period will begin with a large amplitude upper-level ridge across the western CONUS. This ridge will gradually breakdown on Sunday and Monday with more of a flat ridge by the middle of next week. Persistent northwesterly flow across the Northern Plains/Upper Midwest during the extended forecast period may result in some isolated severe weather threat. However, moisture in the Northern Plains will lack a Gulf of Mexico connection and thus, will likely be somewhat low quality, at least initially. Early next week, as lee troughing returns to the Plains and the low-level jet strengthens, the severe weather threat may increase somewhat. Overall, upper-level ridging and no clear strong troughs during the extended period, suggests any severe weather threat that materializes will likely remain somewhat localized this weekend and early next week. Read more