BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
829 PM CDT SAT JUN 26 2010

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
SOUTHERN LYON COUNTY IN NORTHWEST IOWA…
SIOUX COUNTY IN NORTHWEST IOWA…
SOUTHEASTERN LINCOLN COUNTY IN SOUTHEAST SOUTH DAKOTA…
NORTHEASTERN UNION COUNTY IN SOUTHEAST SOUTH DAKOTA…

* UNTIL 915 PM CDT

* AT 828 PM CDT…NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING WALNUT SIZE HAIL…AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR ALCESTER…OR 8 MILES NORTHWEST OF HAWARDEN…AND MOVING EAST AT 35 MPH. ANOTHER STORM WAS LOCATED NEAR ROCK VALLEY…MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR…
HUDSON AND FAIRVIEW AROUND 835 PM CDT…
IRETON AROUND 840 PM CDT…
ROCK VALLEY AND MAURICE AROUND 850 PM CDT…
SIOUX CENTER AROUND 855 PM CDT…
DOON AND ORANGE CITY AROUND 900 PM CDT…
HULL AND ALTON AROUND 905 PM CDT…
BOYDEN AROUND 910 PM CDT…
MATLOCK AND GEORGE AROUND 915 PM CDT…

THIS EXTENDS THE PREVIOUS WARNINGS FOR SIOUX…LYON…LINCOLN…AND UNION COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH 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.