BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
649 PM CDT WED MAY 11 2011

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
WESTERN LYON COUNTY IN NORTHWEST IOWA…
NORTHWESTERN SIOUX COUNTY IN NORTHWEST IOWA…
SOUTHERN ROCK COUNTY IN SOUTHWEST MINNESOTA…
NORTHERN LINCOLN COUNTY IN SOUTHEAST SOUTH DAKOTA…
SOUTHERN MINNEHAHA COUNTY IN SOUTHEAST SOUTH DAKOTA…
NORTHEASTERN TURNER COUNTY IN SOUTHEAST SOUTH DAKOTA…

* UNTIL 730 PM CDT

* AT 648 PM CDT…NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM INWOOD TO LENNOX…AND MOVING NORTH AT
25 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR…
ALVORD AROUND 655 PM CDT…
TEA AND HARRISBURG AROUND 710 PM CDT…
LESTER AND LARCHWOOD AROUND 715 PM CDT…
WALL LAKE AROUND 720 PM CDT…
HILLS…SIOUX FALLS…VALLEY SPRINGS AND BRANDON AROUND 730 PM
CDT…

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE STEEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR…DESTRUCTIVE HAIL…DEADLY LIGHTNING…AND VERY HEAVY RAIN.
BRIEF TORNADOES CAN ALSO FORM WITH LITTLE TO NO WARNING. 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.