BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
816 PM CDT SAT MAY 21 2011

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
WESTERN LYON COUNTY IN NORTHWEST IOWA…
SOUTHWESTERN ROCK COUNTY IN SOUTHWEST MINNESOTA…
NORTH CENTRAL LINCOLN COUNTY IN SOUTHEAST SOUTH DAKOTA…
EASTERN MINNEHAHA COUNTY IN SOUTHEAST SOUTH DAKOTA…

* UNTIL 845 PM CDT

* AT 815 PM CDT…NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL…AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR CANTON…AND MOVING NORTH AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR…
SOUTHEASTERN SIOUX FALLS AROUND 820 PM CDT…
ROWENA AND EASTERN SIOUX FALLS AROUND 825 PM CDT…
BRANDON AND VALLEY SPRINGS AROUND 830 PM CDT…
PALISADES STATE PARK AROUND 835 PM CDT…
GARRETSON AND BALTIC AROUND 840 PM CDT…

PRECAUTIONARY/PREPAREDNESS ACTIONS…

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR…DESTRUCTIVE HAIL…DEADLY LIGHTNING…AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.