

448 

WWUS20 KWNS 012330

SEL5

SPC WW 012330

OKZ000-TXZ000-020600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 45

NWS STORM PREDICTION CENTER NORMAN OK

625 PM CDT TUE APR 1 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHERN AND WESTERN OKLAHOMA

  NORTHWEST TEXAS



* EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 625 PM

  UNTIL 100 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO

    2.5 INCHES IN DIAMETER POSSIBLE

  A FEW DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES EAST AND WEST OF A LINE FROM 75 MILES SOUTH

SOUTHWEST OF WICHITA FALLS TEXAS TO 40 MILES EAST NORTHEAST OF

CHICKASHA OKLAHOMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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.



&&



DISCUSSION...A FEW SUPERCELLS POSSIBLE OVER WW AREA...WHERE MODEST

LOW-LVL CONVERGENCE ALONG NW-ADVANCING DRY LINE AND DEVELOPING WARM

FRONT WILL PERSIST BENEATH FAVORABLE DEEP WIND PROFILES. WHILE

LARGE-SCALE ASCENT SHOULD REMAIN WEAK AND THE BOUNDARY LAYER WILL

COOL WITH ONSET OF DIURNAL COOLING...SETUP MAY NEVERTHELESS SUPPORT

A FEW STORMS WITH LARGE HAIL...AND POSSIBLY LOCALLY DMGG WIND AND/OR

A TORNADO...ESPECIALLY NEAR WARM FRONT.



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

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 26030.





...CORFIDI

