340  
NOUS43 KFSD 252030  
PNSFSD  
IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-  
098-NEZ013-014-SDZ038>040-050-052>071-260830-  
 
PUBLIC INFORMATION STATEMENT  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
330 PM CDT TUE JUL 25 2017  
   
..PUBLIC INFORMATION STATEMENT
 
 
   
..SEVERE THUNDERSTORM WATCH SAFETY RULES
 
 
A SEVERE THUNDERSTORM WATCH MEANS THAT CONDITIONS ARE FAVORABLE  
FOR THE DEVELOPMENT OF SEVERE WEATHER IN THE DESIGNATED AREA.  
DURING A WATCH THERE IS NO CAUSE FOR IMMEDIATE CONCERN. YOU SHOULD  
GO ABOUT YOUR NORMAL BUSINESS...BUT BE ON THE LOOKOUT AND KEEP UP  
TO DATE ON THE LATEST WEATHER DEVELOPMENTS. PUBLIC SAFETY  
OFFICIALS SHOULD ACTIVATE PREARRANGED PLANS.  
 
A SEVERE THUNDERSTORM WARNING   
..ON THE OTHER HAND
 
MEANS THAT A  
SEVERE THUNDERSTORM HAS BEEN SIGHTED OR INDICATED BY RADAR. PEOPLE  
IN THE PATH OF THE STORM SHOULD TAKE IMMEDIATE ACTION TO SAFEGUARD  
THEMSELVES AND THEIR FAMILY.  
 
TECHNICALLY SPEAKING...A SEVERE THUNDERSTORM IS DEFINED AS HAVING  
WIND GUSTS WHICH EXCEED 58 MPH AND/OR HAIL AT LEAST 1 INCH IN  
DIAMETER. HOWEVER...AS THESE STORMS DEVELOP...THEY CAN BE  
ACCOMPANIED BY TORNADOES. LISTEN TO NOAA WEATHER RADIO OR OTHER  
LOCAL MEDIA TO LEARN IF A WARNING HAS BEEN ISSUED FOR YOUR AREA.  
ALSO...KEEP A CLOSE WATCH ON THE THUNDERSTORMS AS TORNADOES CAN  
FORM QUICKLY. IF YOU SEE A TORNADO...MOVE QUICKLY INTO A BASEMENT.  
IF NONE IS AVAILABLE...SEEK SHELTER IN A SMALL INTERIOR ROOM ON  
THE LOWEST FLOOR AND STAY AWAY FROM OUTSIDE WALLS...DOORS AND  
WINDOWS. IN SCHOOLS...FACTORIES OR OTHER INSTITUTIONAL TYPE  
BUILDINGS...STAY OUT OF AUDITORIUMS AND GYMNASIUMS.  
 

 
 
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