

922 

WWUS20 KWNS 211957

SEL5

SPC WW 211957

TXZ000-220300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 85

NWS STORM PREDICTION CENTER NORMAN OK

245 PM CDT MON APR 21 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL THROUGH NORTH CENTRAL AND NORTHEAST TEXAS



* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 245 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES NORTHWEST OF

PARIS TEXAS TO 85 MILES SOUTHWEST OF TEMPLE TEXAS.  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...TSTMS EXPECTED FORM IN THE NEXT SEVERAL HOURS ALONG

NEARLY STNRY W-E OUTFLOW BOUNDARY OVER N CNTRL AND NE TX /NEAR THE

RED RVR/...AND ALONG LEE TROUGH / DRY LINE SEGMENTS EXTENDING FROM

THE GAINESVILLE TX AREA SSW THROUGH THE HILL COUNTRY TO AROUND

JUNCTION TX. LARGE-SCALE FORCING FOR ASCENT WILL BE WEAK. BUT

COMBINATION OF LOW-LVL DESTABILIZATION ALONG AFOREMENTIONED

BOUNDARIES...STEEP MID-LVL LAPSE RATES...AND AMPLE MOISTURE SUGGEST

THE POTENTIAL FOR STORMS WITH SVR HAIL. SOME THREAT ALSO WILL EXIST

FOR LOCALLY DMGG WINDS...ESPECIALLY WITH SWD EXTENT IN WW...AND WITH

TIME AS ACTIVITY MERGES INTO ONE OR TWO SMALL CLUSTERS WITH EMBEDDED

SMALL BOWING SEGMENTS.



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 500. MEAN STORM

MOTION VECTOR 30020.





...CORFIDI

