

860 

WWUS20 KWNS 112046

SEL2

SPC WW 112046

IAZ000-MNZ000-NEZ000-SDZ000-120300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 372

NWS STORM PREDICTION CENTER NORMAN OK

345 PM CDT MON JUL 11 2016



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  NORTHWEST IOWA

  CENTRAL AND SOUTHWEST MINNESOTA

  EXTREME NORTHEAST NEBRASKA

  EXTREME SOUTHEAST SOUTH DAKOTA



* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 345 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A TORNADO OR TWO POSSIBLE



SUMMARY...THUNDERSTORM DEVELOPMENT IS EXPECTED IN THE NEXT COUPLE OF

HOURS ALONG AND IN ADVANCE OF A COLD FRONT MOVING EASTWARD FROM

SOUTH DAKOTA TOWARD MINNESOTA/NORTHWEST IOWA.  THE STORM ENVIRONMENT

WILL FAVOR MOSTLY ORGANIZED CLUSTERS AND LINE SEGMENTS CAPABLE OF

PRODUCING DAMAGING WINDS AND LARGE HAIL.  THERE WILL A SOMEWHAT

GREATER SUPERCELL RISK...WITH PERHAPS A TORNADO OR TWO...ALONG A

RESIDUAL BOUNDARY ACROSS SOUTHERN AND CENTRAL MINNESOTA.  THIS AREA

WILL BE MONITORED CLOSELY THROUGH THE EVENING...IN CASE THE TORNADO

RISK INCREASES TO THE POINT THAT A SMALL TORNADO WATCH BECOMES

NECESSARY.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES EAST AND WEST OF A LINE FROM 10 MILES SOUTH OF

SIOUX CITY IOWA TO 35 MILES NORTH NORTHEAST OF SAINT CLOUD

MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 600. MEAN STORM

MOTION VECTOR 26025.





...THOMPSON

