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Home Return to list Severe Thunderstorm Watch 0541 Issued by the Des Moines Forecast Office
Action: New Issued At: 2026-08-07 13:41:22 377 WWUS63 KDMX 071841 WCNDMX WATCH COUNTY NOTIFICATION FOR WATCH 541 NATIONAL WEATHER SERVICE DES MOINES IA 141 PM CDT FRI AUG 7 2026 IAC013-015-017-023-033-049-069-075-079-081-083-091-099-121-123- 125-127-153-157-169-171-181-187-189-195-197-080300- /O.NEW.KDMX.SV.A.0541.260807T1841Z-260808T0300Z/ THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 541 IN EFFECT UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 26 COUNTIES IN CENTRAL IOWA BOONE DALLAS GRUNDY HAMILTON HARDIN JASPER MARSHALL POLK POWESHIEK STORY TAMA WEBSTER IN NORTH CENTRAL IOWA BUTLER CERRO GORDO FRANKLIN HANCOCK HUMBOLDT WINNEBAGO WORTH WRIGHT IN NORTHEAST IOWA BLACK HAWK BREMER IN SOUTH CENTRAL IOWA MADISON MAHASKA MARION WARREN THIS INCLUDES THE CITIES OF ACKLEY, ADEL, ALLISON, AMES, APLINGTON, BELMOND, BOONE, BRITT, CARLISLE, CEDAR FALLS, CLARION, CLARKSVILLE, CLEAR LAKE, CONRAD, DES MOINES, DIKE, DUMONT, DYSART, EAGLE GROVE, EARLHAM, ELDORA, FOREST CITY, FORT DODGE, GARNER, GLADBROOK, GREENE, GRINNELL, GRUNDY CENTER, HAMPTON, HUMBOLDT, INDIANOLA, IOWA FALLS, KANAWHA, KNOXVILLE, LAKE MILLS, MANLY, MARSHALLTOWN, MASON CITY, NEWTON, NORTHWOOD, NORWALK, OSKALOOSA, PARKERSBURG, PELLA, PERRY, REINBECK, SHELL ROCK, TAMA, TOLEDO, TRAER, WATERLOO, WAUKEE, WAVERLY, WEBSTER CITY, WELLSBURG, AND WINTERSET. * PRIMARY THREATS INCLUDE... SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE. SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE. PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 10% PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : <02% PROB OF 10 OR MORE SEVERE WIND EVENTS : 50% PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 20% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 50% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 30% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 80% MEAN STORM MOTION /MPH/ : SE 35 $$ Action: Continued Issued At: 2026-08-07 16:27:28 280 WWUS63 KDMX 072126 WCNDMX WATCH COUNTY NOTIFICATION FOR WATCH 541 NATIONAL WEATHER SERVICE DES MOINES IA 426 PM CDT FRI AUG 7 2026 IAC033-081-189-195-072230- /O.CAN.KDMX.SV.A.0541.000000T0000Z-260808T0300Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 541 FOR THE FOLLOWING AREAS IN IOWA THIS CANCELS 4 COUNTIES IN NORTH CENTRAL IOWA CERRO GORDO HANCOCK WINNEBAGO WORTH THIS INCLUDES THE CITIES OF BRITT, CLEAR LAKE, FOREST CITY, GARNER, KANAWHA, LAKE MILLS, MANLY, MASON CITY, AND NORTHWOOD. $$ IAC013-015-017-023-049-069-075-079-083-091-099-121-123-125-127- 153-157-169-171-181-187-197-080300- /O.CON.KDMX.SV.A.0541.000000T0000Z-260808T0300Z/ SEVERE THUNDERSTORM WATCH 541 REMAINS VALID UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 22 COUNTIES IN CENTRAL IOWA BOONE DALLAS GRUNDY HAMILTON HARDIN JASPER MARSHALL POLK POWESHIEK STORY TAMA WEBSTER IN NORTH CENTRAL IOWA BUTLER FRANKLIN HUMBOLDT WRIGHT IN NORTHEAST IOWA BLACK HAWK BREMER IN SOUTH CENTRAL IOWA MADISON MAHASKA MARION WARREN THIS INCLUDES THE CITIES OF ACKLEY, ADEL, ALLISON, AMES, APLINGTON, BELMOND, BOONE, CARLISLE, CEDAR FALLS, CLARION, CLARKSVILLE, CONRAD, DES MOINES, DIKE, DUMONT, DYSART, EAGLE GROVE, EARLHAM, ELDORA, FORT DODGE, GLADBROOK, GREENE, GRINNELL, GRUNDY CENTER, HAMPTON, HUMBOLDT, INDIANOLA, IOWA FALLS, KNOXVILLE, MARSHALLTOWN, NEWTON, NORWALK, OSKALOOSA, PARKERSBURG, PELLA, PERRY, REINBECK, SHELL ROCK, TAMA, TOLEDO, TRAER, WATERLOO, WAUKEE, WAVERLY, WEBSTER CITY, WELLSBURG, AND WINTERSET. * PRIMARY THREATS INCLUDE... SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE. SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE. $$ Action: Cancelled Issued At: 2026-08-07 16:27:28 280 WWUS63 KDMX 072126 WCNDMX WATCH COUNTY NOTIFICATION FOR WATCH 541 NATIONAL WEATHER SERVICE DES MOINES IA 426 PM CDT FRI AUG 7 2026 IAC033-081-189-195-072230- /O.CAN.KDMX.SV.A.0541.000000T0000Z-260808T0300Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 541 FOR THE FOLLOWING AREAS IN IOWA THIS CANCELS 4 COUNTIES IN NORTH CENTRAL IOWA CERRO GORDO HANCOCK WINNEBAGO WORTH THIS INCLUDES THE CITIES OF BRITT, CLEAR LAKE, FOREST CITY, GARNER, KANAWHA, LAKE MILLS, MANLY, MASON CITY, AND NORTHWOOD. $$ IAC013-015-017-023-049-069-075-079-083-091-099-121-123-125-127- 153-157-169-171-181-187-197-080300- /O.CON.KDMX.SV.A.0541.000000T0000Z-260808T0300Z/ SEVERE THUNDERSTORM WATCH 541 REMAINS VALID UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 22 COUNTIES IN CENTRAL IOWA BOONE DALLAS GRUNDY HAMILTON HARDIN JASPER MARSHALL POLK POWESHIEK STORY TAMA WEBSTER IN NORTH CENTRAL IOWA BUTLER FRANKLIN HUMBOLDT WRIGHT IN NORTHEAST IOWA BLACK HAWK BREMER IN SOUTH CENTRAL IOWA MADISON MAHASKA MARION WARREN THIS INCLUDES THE CITIES OF ACKLEY, ADEL, ALLISON, AMES, APLINGTON, BELMOND, BOONE, CARLISLE, CEDAR FALLS, CLARION, CLARKSVILLE, CONRAD, DES MOINES, DIKE, DUMONT, DYSART, EAGLE GROVE, EARLHAM, ELDORA, FORT DODGE, GLADBROOK, GREENE, GRINNELL, GRUNDY CENTER, HAMPTON, HUMBOLDT, INDIANOLA, IOWA FALLS, KNOXVILLE, MARSHALLTOWN, NEWTON, NORWALK, OSKALOOSA, PARKERSBURG, PELLA, PERRY, REINBECK, SHELL ROCK, TAMA, TOLEDO, TRAER, WATERLOO, WAUKEE, WAVERLY, WEBSTER CITY, WELLSBURG, AND WINTERSET. * PRIMARY THREATS INCLUDE... SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE. SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE. $$ Action: Continued Issued At: 2026-08-07 18:57:33 216 WWUS63 KDMX 072357 WCNDMX WATCH COUNTY NOTIFICATION FOR WATCH 541 NATIONAL WEATHER SERVICE DES MOINES IA 657 PM CDT FRI AUG 7 2026 IAC013-017-023-069-075-079-083-091-187-197-080100- /O.CAN.KDMX.SV.A.0541.000000T0000Z-260808T0300Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 541 FOR THE FOLLOWING AREAS IN IOWA THIS CANCELS 10 COUNTIES IN CENTRAL IOWA GRUNDY HAMILTON HARDIN WEBSTER IN NORTH CENTRAL IOWA BUTLER FRANKLIN HUMBOLDT WRIGHT IN NORTHEAST IOWA BLACK HAWK BREMER THIS INCLUDES THE CITIES OF ACKLEY, ALLISON, APLINGTON, BELMOND, CEDAR FALLS, CLARION, CLARKSVILLE, CONRAD, DIKE, DUMONT, EAGLE GROVE, ELDORA, FORT DODGE, GREENE, GRUNDY CENTER, HAMPTON, HUMBOLDT, IOWA FALLS, PARKERSBURG, REINBECK, SHELL ROCK, WATERLOO, WAVERLY, WEBSTER CITY, AND WELLSBURG. $$ IAC015-049-099-121-123-125-127-153-157-169-171-181-080300- /O.CON.KDMX.SV.A.0541.000000T0000Z-260808T0300Z/ SEVERE THUNDERSTORM WATCH 541 REMAINS VALID UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 12 COUNTIES IN CENTRAL IOWA BOONE DALLAS JASPER MARSHALL POLK POWESHIEK STORY TAMA IN SOUTH CENTRAL IOWA MADISON MAHASKA MARION WARREN THIS INCLUDES THE CITIES OF ADEL, AMES, BOONE, CARLISLE, DES MOINES, DYSART, EARLHAM, GLADBROOK, GRINNELL, INDIANOLA, KNOXVILLE, MARSHALLTOWN, NEWTON, NORWALK, OSKALOOSA, PELLA, PERRY, TAMA, TOLEDO, TRAER, WAUKEE, AND WINTERSET. * PRIMARY THREATS INCLUDE... SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE. SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE. $$ Action: Cancelled Issued At: 2026-08-07 18:57:33 216 WWUS63 KDMX 072357 WCNDMX WATCH COUNTY NOTIFICATION FOR WATCH 541 NATIONAL WEATHER SERVICE DES MOINES IA 657 PM CDT FRI AUG 7 2026 IAC013-017-023-069-075-079-083-091-187-197-080100- /O.CAN.KDMX.SV.A.0541.000000T0000Z-260808T0300Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 541 FOR THE FOLLOWING AREAS IN IOWA THIS CANCELS 10 COUNTIES IN CENTRAL IOWA GRUNDY HAMILTON HARDIN WEBSTER IN NORTH CENTRAL IOWA BUTLER FRANKLIN HUMBOLDT WRIGHT IN NORTHEAST IOWA BLACK HAWK BREMER THIS INCLUDES THE CITIES OF ACKLEY, ALLISON, APLINGTON, BELMOND, CEDAR FALLS, CLARION, CLARKSVILLE, CONRAD, DIKE, DUMONT, EAGLE GROVE, ELDORA, FORT DODGE, GREENE, GRUNDY CENTER, HAMPTON, HUMBOLDT, IOWA FALLS, PARKERSBURG, REINBECK, SHELL ROCK, WATERLOO, WAVERLY, WEBSTER CITY, AND WELLSBURG. $$ IAC015-049-099-121-123-125-127-153-157-169-171-181-080300- /O.CON.KDMX.SV.A.0541.000000T0000Z-260808T0300Z/ SEVERE THUNDERSTORM WATCH 541 REMAINS VALID UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 12 COUNTIES IN CENTRAL IOWA BOONE DALLAS JASPER MARSHALL POLK POWESHIEK STORY TAMA IN SOUTH CENTRAL IOWA MADISON MAHASKA MARION WARREN THIS INCLUDES THE CITIES OF ADEL, AMES, BOONE, CARLISLE, DES MOINES, DYSART, EARLHAM, GLADBROOK, GRINNELL, INDIANOLA, KNOXVILLE, MARSHALLTOWN, NEWTON, NORWALK, OSKALOOSA, PELLA, PERRY, TAMA, TOLEDO, TRAER, WAUKEE, AND WINTERSET. * PRIMARY THREATS INCLUDE... SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE. SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE. $$ Action: Continued Issued At: 2026-08-07 19:53:36 006 WWUS63 KDMX 080053 WCNDMX WATCH COUNTY NOTIFICATION FOR WATCH 541 NATIONAL WEATHER SERVICE DES MOINES IA 753 PM CDT FRI AUG 7 2026 IAC015-127-169-171-080200- /O.CAN.KDMX.SV.A.0541.000000T0000Z-260808T0300Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 541 FOR THE FOLLOWING AREAS IN IOWA THIS CANCELS 4 COUNTIES IN CENTRAL IOWA BOONE MARSHALL STORY TAMA THIS INCLUDES THE CITIES OF AMES, BOONE, DYSART, GLADBROOK, MARSHALLTOWN, TAMA, TOLEDO, AND TRAER. $$ IAC049-099-121-123-125-153-157-181-080300- /O.CON.KDMX.SV.A.0541.000000T0000Z-260808T0300Z/ SEVERE THUNDERSTORM WATCH 541 REMAINS VALID UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 8 COUNTIES IN CENTRAL IOWA DALLAS JASPER POLK POWESHIEK IN SOUTH CENTRAL IOWA MADISON MAHASKA MARION WARREN THIS INCLUDES THE CITIES OF ADEL, CARLISLE, DES MOINES, EARLHAM, GRINNELL, INDIANOLA, KNOXVILLE, NEWTON, NORWALK, OSKALOOSA, PELLA, PERRY, WAUKEE, AND WINTERSET. * PRIMARY THREATS INCLUDE... SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE. SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE. $$ Action: Cancelled Issued At: 2026-08-07 19:53:36 006 WWUS63 KDMX 080053 WCNDMX WATCH COUNTY NOTIFICATION FOR WATCH 541 NATIONAL WEATHER SERVICE DES MOINES IA 753 PM CDT FRI AUG 7 2026 IAC015-127-169-171-080200- /O.CAN.KDMX.SV.A.0541.000000T0000Z-260808T0300Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 541 FOR THE FOLLOWING AREAS IN IOWA THIS CANCELS 4 COUNTIES IN CENTRAL IOWA BOONE MARSHALL STORY TAMA THIS INCLUDES THE CITIES OF AMES, BOONE, DYSART, GLADBROOK, MARSHALLTOWN, TAMA, TOLEDO, AND TRAER. $$ IAC049-099-121-123-125-153-157-181-080300- /O.CON.KDMX.SV.A.0541.000000T0000Z-260808T0300Z/ SEVERE THUNDERSTORM WATCH 541 REMAINS VALID UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 8 COUNTIES IN CENTRAL IOWA DALLAS JASPER POLK POWESHIEK IN SOUTH CENTRAL IOWA MADISON MAHASKA MARION WARREN THIS INCLUDES THE CITIES OF ADEL, CARLISLE, DES MOINES, EARLHAM, GRINNELL, INDIANOLA, KNOXVILLE, NEWTON, NORWALK, OSKALOOSA, PELLA, PERRY, WAUKEE, AND WINTERSET. * PRIMARY THREATS INCLUDE... SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE. SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE. $$ Action: Expired Issued At: 2026-08-07 21:53:10 127 WWUS63 KDMX 080252 WCNDMX WATCH COUNTY NOTIFICATION FOR WATCH 541 NATIONAL WEATHER SERVICE DES MOINES IA 952 PM CDT FRI AUG 7 2026 IAC049-099-121-123-125-153-157-181-080400- /O.EXP.KDMX.SV.A.0541.000000T0000Z-260808T0300Z/ THE NATIONAL WEATHER SERVICE WILL ALLOW SEVERE THUNDERSTORM WATCH 541 TO EXPIRE AT 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS ALLOWS TO EXPIRE 8 COUNTIES IN CENTRAL IOWA DALLAS JASPER POLK POWESHIEK IN SOUTH CENTRAL IOWA MADISON MAHASKA MARION WARREN THIS INCLUDES THE CITIES OF ADEL, CARLISLE, DES MOINES, EARLHAM, GRINNELL, INDIANOLA, KNOXVILLE, NEWTON, NORWALK, OSKALOOSA, PELLA, PERRY, WAUKEE, AND WINTERSET. $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||