

935 

WWUS20 KWNS 181943

SEL0

SPC WW 181943

IAZ000-MNZ000-190200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 450

NWS STORM PREDICTION CENTER NORMAN OK

245 PM CDT THU AUG 18 2016



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  EXTREME NORTHEAST IOWA

  SOUTH CENTRAL AND SOUTHEAST MINNESOTA



* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 245 PM UNTIL

  900 PM CDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



SUMMARY...SMALL CLUSTER OF THUNDERSTORMS OVER SOUTHWEST MINNESOTA

WILL LIKELY PERSIST FOR THROUGH THE AFTERNOON WHILE MOVING TO THE

EAST-SOUTHEAST ACROSS SOUTHERN MINNESOTA AND EXTREME NORTHEAST IOWA.

 ISOLATED DAMAGING WINDS AND LARGE HAIL WILL BE THE MAIN THREATS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 30

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES NORTHWEST

OF FAIRMONT MINNESOTA TO 15 MILES SOUTH OF LA CROSSE WISCONSIN.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU0).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



&&



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 30030.





...THOMPSON

