

342 

WWUS20 KWNS 171729

SEL3

SPC WW 171729

MNZ000-NDZ000-SDZ000-180100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 483

NWS STORM PREDICTION CENTER NORMAN OK

1230 PM CDT SAT JUL 17 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL MINNESOTA

       SOUTHEAST NORTH DAKOTA

       NORTHEAST SOUTH DAKOTA



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 1230 PM UNTIL

800 PM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 80 MILES NORTHWEST OF

WATERTOWN SOUTH DAKOTA TO 45 MILES EAST OF SAINT CLOUD MINNESOTA.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU3).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



DISCUSSION...FIRST ROUND OF INTENSE THUNDERSTORMS IS MOVING

SOUTHEASTWARD ACROSS CENTRAL MN ALONG AND NORTH OF SURFACE WARM

FRONT.  THESE STORMS WILL POSE RISK OF SEVERE WEATHER THIS AFTERNOON

AS THEY TRACK INTO EAST-CENTRAL MN.  SECOND AND MORE INTENSE ROUND

OF SEVERE STORMS WILL DEVELOP OVER SOUTHEAST ND AND NORTHEAST SD

AROUND 21Z WITH GREATER RISK OF SUPERCELLS.  VERY LARGE HAIL AND

DAMAGING WINDS...ALONG WITH ISOLATED TORNADOES WILL BE POSSIBLE WITH

THIS ACTIVITY.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 29030.





...HART

