BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
642 PM CDT THU AUG 18 2011

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
HARRISON COUNTY IN SOUTHWEST IOWA…
NORTHERN POTTAWATTAMIE COUNTY IN SOUTHWEST IOWA…
WESTERN SHELBY COUNTY IN SOUTHWEST IOWA…
SOUTHEASTERN BURT COUNTY IN EAST CENTRAL NEBRASKA…
WASHINGTON COUNTY IN EAST CENTRAL NEBRASKA…

* UNTIL 730 PM CDT

* AT 637 PM CDT…NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL…AND DAMAGING WINDS OF AROUND 60 MPH OR HIGHER. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 8 MILES SOUTH OF TEKAMAH TO 7 MILES WEST OF HARLAN…AND MOVING SOUTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE…PERSIA…MISSOURI VALLEY…BLAIR…KENNARD…SHELBY…MINDEN…FORT CALHOUN…TENNANT…DESOTO BEND NATIONAL WILDLIFE REFUGE…WILSON ISLAND STATE PARK…NEOLA AND HANCOCK.

THE WARNED AREA INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 20 AND 34.

THE WARNED AREA INCLUDES INTERSTATE 29 IN IOWA BETWEEN MILE MARKERS 66 AND 95.

THE WARNED AREA INCLUDES HIGHWAY 59 IN IOWA BETWEEN MILE MARKERS 58 AND 67.

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 LEVEL OF YOUR HOME OR BUSINESS. HEAVY RAIN CAN QUICKLY FLOOD ROADS…SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.