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

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
SOUTHWESTERN HARRISON COUNTY IN SOUTHWEST IOWA…
NORTHWESTERN POTTAWATTAMIE COUNTY IN SOUTHWEST IOWA…
DOUGLAS COUNTY IN EAST CENTRAL NEBRASKA…
SOUTHEASTERN WASHINGTON COUNTY IN EAST CENTRAL NEBRASKA…

* UNTIL 545 PM CDT

* AT 453 PM CDT…NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL…AND DAMAGING WINDS OF AROUND 60 MPH OR HIGHER. THIS STORM WAS LOCATED NEAR FORT CALHOUN…OR 14 MILES NORTH OF OMAHA…AND MOVING SOUTHEAST AT 20 MPH. THIS STORM PRODUCED TENNIS BALL SIZE HAIL NEAR HERMAN AROUND 431 PM.

* LOCATIONS IMPACTED INCLUDE…OMAHA…FORT CALHOUN…MISSOURI VALLEY…COUNCIL BLUFFS…WILSON ISLAND STATE PARK…CRESCENT AND CARTER LAKE.

THE WARNED AREA INCLUDES INTERSTATE 29 IN IOWA BETWEEN MILE MARKERS 54 AND 82.

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.