783
NOUS43 KFSD 180221
PNSFSD
IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ038>040-050-052>071-181430-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
921 PM CDT FRI MAY 17 2013

 ...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.

$$