BULLETIN – EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
628 PM CDT THU MAY 12 2011

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
SOUTHEASTERN CHEROKEE COUNTY IN NORTHWEST IOWA…
IDA COUNTY IN NORTHWEST IOWA…
EASTERN WOODBURY COUNTY IN NORTHWEST IOWA…

* UNTIL 715 PM CDT

* AT 626 PM CDT…NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE
DESTRUCTIVE HAIL UP TO BASEBALL SIZE…AND DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED NEAR SMITHLAND…OR 20 MILES
WEST OF IDA GROVE…AND MOVING NORTHEAST AT 15 MPH. A SECOND STORM
WAS LOCATED NEAR HOLSTEIN CAPABLE OF PRODUCING HAIL TO THE SIZE OF
HALF DOLLARS. THIS STORM IS ALSO MOVING NORTHEAST AT 20 MILES PER
HOUR.

* THE SEVERE THUNDERSTORM WITH BASEBALL SIZED HAIL WILL BE NEAR…
ANTHON AROUND 635 PM CDT…
DANBURY AROUND 640 PM CDT…
BATTLE CREEK…CUSHING AND WASHTA AROUND 700 PM CDT…
IDA GROVE AROUND 705 PM CDT…

PRECAUTIONARY/PREPAREDNESS ACTIONS…

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY…IF A TORNADO IS SPOTTED…ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE…SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH…PREPARE
IMMEDIATELY FOR LARGE DESTRUCTIVE HAIL CAPABLE OF PRODUCING
SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER…
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.