BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
912 PM CDT MON JUN 20 2011

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
SOUTHWESTERN CHEROKEE COUNTY IN NORTHWEST IOWA…
IDA COUNTY IN WEST CENTRAL IOWA…
PLYMOUTH COUNTY IN NORTHWEST IOWA…
WOODBURY COUNTY IN WEST CENTRAL IOWA…
NORTHEASTERN DAKOTA COUNTY IN NORTHEAST NEBRASKA…
SOUTHEASTERN UNION COUNTY IN SOUTHEAST SOUTH DAKOTA…

* UNTIL 945 PM CDT

* AT 912 PM CDT…NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM NORTH SIOUX CITY TO DANBURY…AND
MOVING NORTHEAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR…
LAWTON AROUND 920 PM CDT…
MOVILLE AND ANTHON AROUND 925 PM CDT…
HINTON AROUND 930 PM CDT…
BATTLE CREEK AROUND 935 PM CDT…
PIERSON…MERRILL…KINGSLEY AND IDA GROVE AROUND 940 PM CDT…
CUSHING…ARTHUR…LE MARS AND WASHTA AROUND 945 PM CDT…

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
BRUNSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY…IF A TORNADO IS SPOTTED…ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE…SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WIND. THIS IS AN
EXTREMELY DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT TUESDAY MORNING
FOR NORTHWESTERN IOWA AND SOUTHWEST MINNESOTA AND NORTHEAST NEBRASKA
AND SOUTHEASTERN SOUTH DAKOTA.