Severe Storms

WW 0561 Status Updates
STATUS REPORT ON WW 561 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 E LWD TO 10 NW CID. WW 561 WILL BE ALLOWED TO EXPIRE AT 301200Z. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1845. ..GRAMS..07/30/25 ATTN...WFO...DMX... STATUS REPORT FOR WS 561 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC007-051-179-301200- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE DAVIS 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 0561 Status Updates
STATUS REPORT ON WW 561 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 E LWD TO 10 NW CID. WW 561 WILL BE ALLOWED TO EXPIRE AT 301200Z. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1845. ..GRAMS..07/30/25 ATTN...WFO...DMX... STATUS REPORT FOR WS 561 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC007-051-179-301200- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE DAVIS 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

MD 1845 CONCERNING SEVERE THUNDERSTORM WATCH 561... FOR SOUTHEAST IA...NORTHWEST IL...FAR NORTHEAST MO
Mesoscale Discussion 1845 NWS Storm Prediction Center Norman OK 0449 AM CDT Wed Jul 30 2025 Areas affected...southeast IA...northwest IL...far northeast MO Concerning...Severe Thunderstorm Watch 561... Valid 300949Z - 301045Z The severe weather threat for Severe Thunderstorm Watch 561 continues. SUMMARY...Sporadic strong gusts of 40-60 mph will remain possible through mid-morning. An additional watch issuance beyond WW 561 is not planned. DISCUSSION...A pair of MCSs persist from northwest MO to far northwest IL. The lead one had been more productive in terms of measured strong to severe gusts earlier this morning, but has shown clear signs of decay over the past couple hours while crossing the MS Valley. A near-term strong gust threat could still occur across far northern IL, near the WI border, but should subside in the next couple hours given the dearth of MLCAPE in this region northward. The larger MCS has struggled to produce stronger gusts perhaps in part due to its northeast/southwest orientation paralleling the deep-layer shear vector. Still, with deep convective cores for this time of day, it is plausible that an oscillatory uptick to marginal severe intensity may yet occur across southeast IA, perhaps spreading into far northeast MO and northwest/west-central IL through mid-morning. ..Grams/Hart.. 07/30/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LOT...ILX...MKX...LSX...DVN...DMX...EAX... LAT...LON 42478995 42608907 42248881 41768881 41088900 40329024 40119156 40449304 40769334 41469273 41909244 41749189 41569120 41619046 42079000 42478995 MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH Read more

WW 561 SEVERE TSTM IA 300625Z - 301200Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 561 NWS Storm Prediction Center Norman OK 125 AM CDT Wed Jul 30 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central Iowa * Effective this Wednesday morning from 125 AM until 700 AM CDT. * Primary threats include... Isolated damaging wind gusts to 65 mph possible SUMMARY...Clusters of thunderstorms will affect central Iowa overnight, with a persistent risk of gusty and occasionally damaging wind gusts. The severe thunderstorm watch area is approximately along and 70 statute miles east and west of a line from 70 miles north northeast of Des Moines IA to 20 miles east of Lamoni IA. 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 559...WW 560... AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 55 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27025. ...Hart Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0342 AM CDT Wed Jul 30 2025 Valid 021200Z - 071200Z ...DISCUSSION... Surface high pressure will build into the eastern CONUS this weekend and usher in an extended period of cooler and less humid weather for much of the eastern CONUS with reduced severe weather chances. Some severe weather chances will remain from the central High Plains to the northern Plains where low-level moisture is expected to remain. Several weak embedded mid-level shortwave troughs may result in some thunderstorm activity from the central to northern High Plains amid moderate to strong instability. A few severe storms are possible early next week with any of these passing troughs. There is some signal that a more organized severe weather threat could materialize by the middle of next week as strong instability builds across the northern Plains and stronger mid-level troughing and flow becomes more prevalent across the region. However, predictability is low within this low-amplitude pattern. There is not much consensus for the overall pattern beyond D6/Monday and therefore, no severe weather probabilities are warranted at this time. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0342 AM CDT Wed Jul 30 2025 Valid 021200Z - 071200Z ...DISCUSSION... Surface high pressure will build into the eastern CONUS this weekend and usher in an extended period of cooler and less humid weather for much of the eastern CONUS with reduced severe weather chances. Some severe weather chances will remain from the central High Plains to the northern Plains where low-level moisture is expected to remain. Several weak embedded mid-level shortwave troughs may result in some thunderstorm activity from the central to northern High Plains amid moderate to strong instability. A few severe storms are possible early next week with any of these passing troughs. There is some signal that a more organized severe weather threat could materialize by the middle of next week as strong instability builds across the northern Plains and stronger mid-level troughing and flow becomes more prevalent across the region. However, predictability is low within this low-amplitude pattern. There is not much consensus for the overall pattern beyond D6/Monday and therefore, no severe weather probabilities are warranted at this time. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0342 AM CDT Wed Jul 30 2025 Valid 021200Z - 071200Z ...DISCUSSION... Surface high pressure will build into the eastern CONUS this weekend and usher in an extended period of cooler and less humid weather for much of the eastern CONUS with reduced severe weather chances. Some severe weather chances will remain from the central High Plains to the northern Plains where low-level moisture is expected to remain. Several weak embedded mid-level shortwave troughs may result in some thunderstorm activity from the central to northern High Plains amid moderate to strong instability. A few severe storms are possible early next week with any of these passing troughs. There is some signal that a more organized severe weather threat could materialize by the middle of next week as strong instability builds across the northern Plains and stronger mid-level troughing and flow becomes more prevalent across the region. However, predictability is low within this low-amplitude pattern. There is not much consensus for the overall pattern beyond D6/Monday and therefore, no severe weather probabilities are warranted at this time. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0342 AM CDT Wed Jul 30 2025 Valid 021200Z - 071200Z ...DISCUSSION... Surface high pressure will build into the eastern CONUS this weekend and usher in an extended period of cooler and less humid weather for much of the eastern CONUS with reduced severe weather chances. Some severe weather chances will remain from the central High Plains to the northern Plains where low-level moisture is expected to remain. Several weak embedded mid-level shortwave troughs may result in some thunderstorm activity from the central to northern High Plains amid moderate to strong instability. A few severe storms are possible early next week with any of these passing troughs. There is some signal that a more organized severe weather threat could materialize by the middle of next week as strong instability builds across the northern Plains and stronger mid-level troughing and flow becomes more prevalent across the region. However, predictability is low within this low-amplitude pattern. There is not much consensus for the overall pattern beyond D6/Monday and therefore, no severe weather probabilities are warranted at this time. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0342 AM CDT Wed Jul 30 2025 Valid 021200Z - 071200Z ...DISCUSSION... Surface high pressure will build into the eastern CONUS this weekend and usher in an extended period of cooler and less humid weather for much of the eastern CONUS with reduced severe weather chances. Some severe weather chances will remain from the central High Plains to the northern Plains where low-level moisture is expected to remain. Several weak embedded mid-level shortwave troughs may result in some thunderstorm activity from the central to northern High Plains amid moderate to strong instability. A few severe storms are possible early next week with any of these passing troughs. There is some signal that a more organized severe weather threat could materialize by the middle of next week as strong instability builds across the northern Plains and stronger mid-level troughing and flow becomes more prevalent across the region. However, predictability is low within this low-amplitude pattern. There is not much consensus for the overall pattern beyond D6/Monday and therefore, no severe weather probabilities are warranted at this time. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0342 AM CDT Wed Jul 30 2025 Valid 021200Z - 071200Z ...DISCUSSION... Surface high pressure will build into the eastern CONUS this weekend and usher in an extended period of cooler and less humid weather for much of the eastern CONUS with reduced severe weather chances. Some severe weather chances will remain from the central High Plains to the northern Plains where low-level moisture is expected to remain. Several weak embedded mid-level shortwave troughs may result in some thunderstorm activity from the central to northern High Plains amid moderate to strong instability. A few severe storms are possible early next week with any of these passing troughs. There is some signal that a more organized severe weather threat could materialize by the middle of next week as strong instability builds across the northern Plains and stronger mid-level troughing and flow becomes more prevalent across the region. However, predictability is low within this low-amplitude pattern. There is not much consensus for the overall pattern beyond D6/Monday and therefore, no severe weather probabilities are warranted at this time. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0342 AM CDT Wed Jul 30 2025 Valid 021200Z - 071200Z ...DISCUSSION... Surface high pressure will build into the eastern CONUS this weekend and usher in an extended period of cooler and less humid weather for much of the eastern CONUS with reduced severe weather chances. Some severe weather chances will remain from the central High Plains to the northern Plains where low-level moisture is expected to remain. Several weak embedded mid-level shortwave troughs may result in some thunderstorm activity from the central to northern High Plains amid moderate to strong instability. A few severe storms are possible early next week with any of these passing troughs. There is some signal that a more organized severe weather threat could materialize by the middle of next week as strong instability builds across the northern Plains and stronger mid-level troughing and flow becomes more prevalent across the region. However, predictability is low within this low-amplitude pattern. There is not much consensus for the overall pattern beyond D6/Monday and therefore, no severe weather probabilities are warranted at this time. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0342 AM CDT Wed Jul 30 2025 Valid 021200Z - 071200Z ...DISCUSSION... Surface high pressure will build into the eastern CONUS this weekend and usher in an extended period of cooler and less humid weather for much of the eastern CONUS with reduced severe weather chances. Some severe weather chances will remain from the central High Plains to the northern Plains where low-level moisture is expected to remain. Several weak embedded mid-level shortwave troughs may result in some thunderstorm activity from the central to northern High Plains amid moderate to strong instability. A few severe storms are possible early next week with any of these passing troughs. There is some signal that a more organized severe weather threat could materialize by the middle of next week as strong instability builds across the northern Plains and stronger mid-level troughing and flow becomes more prevalent across the region. However, predictability is low within this low-amplitude pattern. There is not much consensus for the overall pattern beyond D6/Monday and therefore, no severe weather probabilities are warranted at this time. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0342 AM CDT Wed Jul 30 2025 Valid 021200Z - 071200Z ...DISCUSSION... Surface high pressure will build into the eastern CONUS this weekend and usher in an extended period of cooler and less humid weather for much of the eastern CONUS with reduced severe weather chances. Some severe weather chances will remain from the central High Plains to the northern Plains where low-level moisture is expected to remain. Several weak embedded mid-level shortwave troughs may result in some thunderstorm activity from the central to northern High Plains amid moderate to strong instability. A few severe storms are possible early next week with any of these passing troughs. There is some signal that a more organized severe weather threat could materialize by the middle of next week as strong instability builds across the northern Plains and stronger mid-level troughing and flow becomes more prevalent across the region. However, predictability is low within this low-amplitude pattern. There is not much consensus for the overall pattern beyond D6/Monday and therefore, no severe weather probabilities are warranted at this time. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0342 AM CDT Wed Jul 30 2025 Valid 021200Z - 071200Z ...DISCUSSION... Surface high pressure will build into the eastern CONUS this weekend and usher in an extended period of cooler and less humid weather for much of the eastern CONUS with reduced severe weather chances. Some severe weather chances will remain from the central High Plains to the northern Plains where low-level moisture is expected to remain. Several weak embedded mid-level shortwave troughs may result in some thunderstorm activity from the central to northern High Plains amid moderate to strong instability. A few severe storms are possible early next week with any of these passing troughs. There is some signal that a more organized severe weather threat could materialize by the middle of next week as strong instability builds across the northern Plains and stronger mid-level troughing and flow becomes more prevalent across the region. However, predictability is low within this low-amplitude pattern. There is not much consensus for the overall pattern beyond D6/Monday and therefore, no severe weather probabilities are warranted at this time. Read more

WW 0561 Status Updates
STATUS REPORT ON WW 561 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 E SDA TO 15 SW DSM TO 45 W ALO. ..GRAMS..07/30/25 ATTN...WFO...DMX... STATUS REPORT FOR WS 561 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC007-013-039-051-053-075-099-117-123-125-127-135-153-157-159- 169-171-173-175-179-181-185-300940- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE BLACK HAWK CLARKE DAVIS DECATUR GRUNDY JASPER LUCAS MAHASKA MARION MARSHALL MONROE POLK POWESHIEK RINGGOLD STORY TAMA TAYLOR UNION 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 0561 Status Updates
STATUS REPORT ON WW 561 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 E SDA TO 15 SW DSM TO 45 W ALO. ..GRAMS..07/30/25 ATTN...WFO...DMX... STATUS REPORT FOR WS 561 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC007-013-039-051-053-075-099-117-123-125-127-135-153-157-159- 169-171-173-175-179-181-185-300940- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE BLACK HAWK CLARKE DAVIS DECATUR GRUNDY JASPER LUCAS MAHASKA MARION MARSHALL MONROE POLK POWESHIEK RINGGOLD STORY TAMA TAYLOR UNION 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 1844 CONCERNING SEVERE THUNDERSTORM WATCH 559...560...561... FOR SOUTHERN/EASTERN IA AND ADJACENT PARTS OF MO/IL
Mesoscale Discussion 1844 NWS Storm Prediction Center Norman OK 0128 AM CDT Wed Jul 30 2025 Areas affected...southern/eastern IA and adjacent parts of MO/IL Concerning...Severe Thunderstorm Watch 559...560...561... Valid 300628Z - 300830Z The severe weather threat for Severe Thunderstorm Watch 559, 560, 561 continues. SUMMARY...Strong to sporadic severe gusts will remain possible through sunrise across much of southern to eastern Iowa and adjacent portions of Missouri and Illinois. The more concentrated threat is anticipated over south-central Iowa where WW 561 was recently coordinated. DISCUSSION...Two clusters of strong to locally severe storms are ongoing, a lead one over east-central IA and a broader arc across west-central to southwest IA. A measured gust of 58 mph was reported last hour at KMIW and sporadic gusts of 50-70 mph will be possible with the lead cluster as it moves east at around 30 mph in eastern IA. Greater organizational character with a more pronounced cold pool accompanies the north-northeast to southwest oriented QLCS in western IA. While the northern extent will progress atop the lead cluster's outflow, ample buoyancy to its south with mid to upper 70s surface dew points should foster mainly strong with sporadic severe gusts as it moves east-southeast at around 30 mph through daybreak. ..Grams.. 07/30/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...DVN...DMX...EAX...OAX... LAT...LON 42329467 42139385 41779315 41859276 42219246 42569189 42579087 42339020 41589016 40629086 40499147 40349219 40309377 40319470 40339543 40459572 40679567 41259503 41599472 42329467 MOST PROBABLE PEAK WIND GUST...55-70 MPH Read more

WW 0561 Status Updates
STATUS REPORT ON WW 561 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 NE SDA TO 30 E FOD. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1844. ..GRAMS..07/30/25 ATTN...WFO...DMX... STATUS REPORT FOR WS 561 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC001-003-007-013-015-039-049-051-053-075-079-083-099-117-121- 123-125-127-135-153-157-159-169-171-173-175-179-181-185- 300840- IA . IOWA COUNTIES INCLUDED ARE ADAIR ADAMS APPANOOSE BLACK HAWK BOONE CLARKE DALLAS DAVIS DECATUR GRUNDY HAMILTON HARDIN JASPER LUCAS MADISON MAHASKA MARION MARSHALL MONROE POLK POWESHIEK RINGGOLD STORY TAMA TAYLOR UNION 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 0560 Status Updates
300840- STATUS REPORT ON WW 560 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 S SDA TO 35 NE SDA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1844. ..GRAMS..07/30/25 ATTN...WFO... STATUS REPORT FOR WS 560 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC137-145-300840- IA . IOWA COUNTIES INCLUDED ARE MONTGOMERY PAGE 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 0560 Status Updates
300840- STATUS REPORT ON WW 560 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 S SDA TO 35 NE SDA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1844. ..GRAMS..07/30/25 ATTN...WFO... STATUS REPORT FOR WS 560 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC137-145-300840- IA . IOWA COUNTIES INCLUDED ARE MONTGOMERY PAGE 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