Weather Watch Clearance Notification
Issued by NWS Des Moines, IA

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WWUS63 KDMX 212154
WCNDMX

WATCH COUNTY NOTIFICATION FOR WATCH 429
NATIONAL WEATHER SERVICE DES MOINES IA
454 PM CDT FRI JUL 21 2017

IAC013-015-017-023-049-075-079-083-099-117-123-125-127-135-153-
157-169-171-179-181-220500-
/O.NEW.KDMX.SV.A.0429.170721T2154Z-170722T0500Z/

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
429 IN EFFECT UNTIL MIDNIGHT CDT TONIGHT FOR THE FOLLOWING AREAS

IN IOWA THIS WATCH INCLUDES 20 COUNTIES

IN CENTRAL IOWA

BOONE                 DALLAS                GRUNDY
HAMILTON              HARDIN                JASPER
MARSHALL              POLK                  POWESHIEK
STORY                 TAMA

IN NORTH CENTRAL IOWA

BUTLER

IN NORTHEAST IOWA

BLACK HAWK            BREMER

IN SOUTH CENTRAL IOWA

LUCAS                 MAHASKA               MARION
MONROE                WARREN

IN SOUTHEAST IOWA

WAPELLO

THIS INCLUDES THE CITIES OF ACKLEY, ADEL, ALBIA, ALLISON, AMES,
APLINGTON, BOONE, CARLISLE, CEDAR FALLS, CHARITON, CLARKSVILLE,
CONRAD, DES MOINES, DIKE, DUMONT, DYSART, ELDORA, GLADBROOK,
GREENE, GRINNELL, GRUNDY CENTER, INDIANOLA, IOWA FALLS,
KNOXVILLE, MARSHALLTOWN, NEWTON, NORWALK, OSKALOOSA, OTTUMWA,
PARKERSBURG, PELLA, PERRY, REINBECK, SHELL ROCK, TAMA, TOLEDO,
TRAER, WATERLOO, WAUKEE, WAVERLY, WEBSTER CITY, AND WELLSBURG.

* PRIMARY THREATS INCLUDE...

 SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY.
 SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
   INCHES IN DIAMETER POSSIBLE.
 A TORNADO OR TWO POSSIBLE.

PROBABILITY TABLE:
PROB OF 2 OR MORE TORNADOES                        :  20%
PROB OF 1 OR MORE STRONG /F2-F5/ TORNADOES         :  10%
PROB OF 10 OR MORE SEVERE WIND EVENTS              :  60%
PROB OF 1 OR MORE WIND EVENTS >= 75 MPH            :  20%
PROB OF 10 OR MORE SEVERE HAIL EVENTS              :  40%
PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES          :  30%
PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS :  90%
MEAN STORM MOTION /MPH/                            :  E 30

$$

REV


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