BULLETIN – EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
556 PM CDT SUN JUN 21 2009

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR…
SOUTHEASTERN LYON COUNTY IN NORTHWEST IOWA
NORTHERN SIOUX COUNTY IN NORTHWEST IOWA

* UNTIL 645 PM CDT

* AT 556 PM CDT…NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR HULL…OR 15 MILES SOUTH OF ROCK RAPIDS…AND MOVING EAST AT 10 MPH.

* THIS TORNADIC STORM WILL BE NEAR…
BOYDEN AROUND 630 PM CDT…
MATLOCK AROUND 645 PM CDT…

AT 550 PM CDT…A WEATHER SPOTTER REPORTED A ROTATING WALL CLOUD NEAR HULL.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR…IT MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY BE ON THE GROUND…OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM…MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING…DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.