BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
832 PM CDT SAT MAY 21 2011

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
SOUTHEASTERN HARRISON COUNTY IN SOUTHWEST IOWA…
POTTAWATTAMIE COUNTY IN SOUTHWEST IOWA…
SOUTHERN SHELBY COUNTY IN SOUTHWEST IOWA…

* UNTIL 915 PM CDT

* AT 829 PM CDT…NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR COUNCIL BLUFFS…OR 13 MILES EAST OF OMAHA…AND MOVING EAST NORTHEAST AT 30 MPH. OTHER POSSIBLE SEVERE STORMS WERE APPROACHING OAKLAND IOWA AND ANOTHER WAS APPROACHING AVOCA IOWA. THESE STORMS COULD ALSO PRODUCE QUARTER SIZE HAIL.

* LOCATIONS IMPACTED INCLUDE…
TREYNOR…UNDERWOOD…MACEDONIA…MINDEN…CARSON…OAKLAND…
SHELBY…AVOCA…WALNUT…HARLAN…ELK HORN…MCCLELLAND…NEOLA…
HANCOCK…NISHNA BEND RECREATION AREA…TENNANT…PRAIRIE ROSE
STATE PARK AND ELK HORN CREEK RECREATION AREA.

THE WARNED AREA INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 17 AND 8.

THE WARNED AREA INCLUDES INTERSTATE 29 IN IOWA BETWEEN MILE MARKERS 43 AND 66.

THE WARNED AREA INCLUDES HIGHWAY 59 IN IOWA BETWEEN MILE MARKERS 41 AND 73.

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.