Full Notification

SVRDMX The National Weather Service in Des Moines has issued a

* Severe Thunderstorm Warning for... Polk County in central Iowa... Story County in central Iowa... Northern Madison County in south central Iowa... Webster County in central Iowa... Southern Wright County in north central Iowa... Western Jasper County in central Iowa... Boone County in central Iowa... Hamilton County in central Iowa... Northern Warren County in south central Iowa... Eastern Greene County in west central Iowa... Southwestern Hardin County in central Iowa... Northeastern Calhoun County in west central Iowa... Southeastern Humboldt County in north central Iowa... Dallas County in central Iowa...

* Until 530 AM CDT.

* At 439 AM CDT, severe thunderstorms were located along a line extending from Lizard Creek State Recreation Area to near Ogden to near Waukee, moving east at 55 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Trained weather spotters. IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include... Des Moines, Ames, West Des Moines, Ankeny, Urbandale, Fort Dodge, Johnston, Clive, Altoona, Waukee, Boone, Norwalk, Pleasant Hill, Grimes, Webster City, Perry, Nevada, Adel, Clarion, and Windsor Heights. This includes the following highways... Interstate 35 between mile markers 66 and 72, and between mile markers 87 and 152. Interstate 80 between mile markers 97 and 156. Interstate 235 between mile markers 1 and 14.

* AFFECTED AREAS: BOONE, IA ... CALHOUN, IA ... DALLAS, IA ... GREENE, IA ... HAMILTON, IA ... HARDIN, IA ... HUMBOLDT, IA ... JASPER, IA ... MADISON, IA ... POLK, IA ... STORY, IA ... WARREN, IA ... WEBSTER, IA ... WRIGHT, IA

Instructions:

Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building.