BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
521 PM CDT THU MAY 12 2011

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
WESTERN IDA COUNTY IN NORTHWEST IOWA…
EASTERN WOODBURY COUNTY IN NORTHWEST IOWA…

* UNTIL 545 PM CDT

* AT 521 PM CDT…NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL. THIS STORM WAS LOCATED 5 MILES SOUTHEAST OF ANTHON…OR 15
MILES WEST OF IDA GROVE…AND MOVING NORTHEAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR…
CUSHING AND CORRECTIONVILLE AROUND 545 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.

THIS IS A SUPERCELL THUNDERSTORM. DUE TO THE ROTATING NATURE OF THESE
STORMS…THEY ARE CAPABLE OF PRODUCING ALL TYPES OF SEVERE WEATHER…
INCLUDING TORNADOES. MOVE QUICKLY TO A SAFE SHELTER…PREFERABLY
INTO AN INTERIOR ROOM…SUCH AS A BATHROOM OR A CLOSET…OR INTO A
BASEMENT.