SPC Tornado Watch 347

WW 347 TORNADO KS NE 222255Z – 230600Z


URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 347
NWS STORM PREDICTION CENTER NORMAN OK
555 PM CDT SAT JUN 22 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF
  NORTHWEST KANSAS
  SOUTHWEST...CENTRAL...AND NORTHEAST NEBRASKA

* EFFECTIVE THIS SATURDAY AFTERNOON AND SUNDAY MORNING FROM 555
  PM UNTIL 100 AM CDT.

* PRIMARY THREATS INCLUDE...
  SEVERAL TORNADOES WITH A FEW INTENSE TORNADOES POSSIBLE
  SEVERAL VERY LARGE HAIL EVENTS TO 3 INCHES IN DIAMETER POSSIBLE
  SEVERAL DAMAGING WIND GUSTS LIKELY WITH A FEW SIGNIFICANT GUSTS
    TO 75 MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH NORTHEAST OF
BURWELL NEBRASKA TO 60 MILES SOUTHEAST OF GOODLAND KANSAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 343...WW 344...WW
345...WW 346...

DISCUSSION...TSTMS EXPECTED TO INCREASE IN COVERAGE THROUGH LATE
TNGT ALONG AND POSSIBLY N OF WSW-ENE OUTFLOW BOUNDARY THROUGH
CNTRL/ERN NEB. OTHER STORMS MAY FORM IN MORE DEEPLY-MIXED/HEATED
ENVIRONMENT ALONG LEE TROUGH IN NW KS. AMPLE SHEAR/INSTABILITY WILL
EXIST FOR SUSTAINED STORMS/SUPERCELLS IN BOTH AREAS...ALTHOUGH THE
GREATEST LIKELIHOOD FOR LOW-LVL MESOCYCLONES/TORNADOES SHOULD
DEVELOP ALONG OUTFLOW BOUNDARY LATER THIS EVE AS LLJ STRENGTHENS
WITH NOCTURNAL COOLING AND THE APPROACH OF NRN RCKYS SHORTWAVE
TROUGH.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 26020.


...CORFIDI

via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0347.html