BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
300 PM CDT WED SEP 22 2010

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
LYON COUNTY IN NORTHWEST IOWA…
WESTERN OSCEOLA COUNTY IN NORTHWEST IOWA…
SIOUX COUNTY IN NORTHWEST IOWA…
SOUTHEASTERN LINCOLN COUNTY IN SOUTHEAST SOUTH DAKOTA…
NORTHEASTERN UNION COUNTY IN SOUTHEAST SOUTH DAKOTA…

* UNTIL 345 PM CDT

* AT 301 PM CDT…NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
QUARTER SIZE HAIL. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM LARCHWOOD TO FAIRVIEW TO ALCESTER…AND MOVING
EAST AT 45 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR…
ROCK VALLEY AND DOON AROUND 310 PM CDT…
ROCK RAPIDS AROUND 315 PM CDT…
HULL AROUND 320 PM CDT…
SIOUX CENTER AND GEORGE AROUND 325 PM CDT…
MATLOCK AND BOYDEN AROUND 330 PM CDT…
LITTLE ROCK AROUND 335 PM CDT…
SIBLEY AND ASHTON AROUND 340 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.