Full Notification

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for... Southeastern Lyon County in northwestern Iowa... Osceola County in northwestern Iowa... Southwestern Dickinson County in northwestern Iowa... Northeastern Sioux County in northwestern Iowa... Western Clay County in northwestern Iowa... O'Brien County in northwestern Iowa...

* Until 815 AM CDT.

* At 726 AM CDT, severe thunderstorms were located along a line extending from near Doon to near Orange City to near Merrill, moving east at 50 mph. HAZARD...70 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings.

* Severe thunderstorms will be near... George and Hospers around 735 AM CDT. Boyden, Granville and Matlock around 740 AM CDT. Sheldon, Paullina and Ashton around 750 AM CDT. Primghar and Archer around 755 AM CDT. Sanborn, Sutherland and Melvin around 800 AM CDT. Hartley around 810 AM CDT. Everly and Royal around 815 AM CDT. Other locations impacted by these severe thunderstorms include Calumet and Moneta.

* AFFECTED AREAS: LYON, IA ... O'BRIEN, IA ... CLAY, IA ... OSCEOLA, IA ... DICKINSON, IA ... SIOUX, IA

Instructions:

For your protection move to an interior room on the lowest floor of a building. Intense thunderstorm lines can produce brief tornadoes and widespread significant wind damage. Although a tornado is not immediately likely, it is best to move to an interior room on the lowest floor of a building. These storms may cause serious injury and significant property damage.