

585 

WWUS20 KWNS 282223

SEL9

SPC WW 282223

TXZ000-CWZ000-290300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 39

NWS STORM PREDICTION CENTER NORMAN OK

515 PM CDT FRI MAR 28 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHEAST TEXAS

  COASTAL WATERS



* EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 515 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL LARGE HAIL EVENTS LIKELY WITH A FEW VERY LARGE HAIL

    EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  SEVERAL 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 30 MILES NORTH

NORTHEAST OF HOUSTON TEXAS TO 5 MILES WEST OF ANGLETON TEXAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU9).



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 36...WW 37...WW 38...



DISCUSSION...SQLN NOW NEARING COLLEGE STATION/CLL EXPECTED TO MOVE

GENERALLY ESE AS SWD DEVELOPMENT ALONG EXISTING LINE IS ENCOURAGED

BY DISTRIBUTION OF LOW-LVL BUOYANCY/MOISTURE...AND BY WEAK SLY SFC

FLOW THAT WILL PERSIST OVER THE MIDDLE AND UPR CSTL PLN. CONTINUED

CONVECTIVE DEVELOPMENT ALSO WILL BE FOSTERED BY LARGE-SCALE ASCENT

DOWNSTREAM FROM PROGRESSIVE SRN STREAM TROUGH NOW OVER CNTRL TX.

SUSTAINED LARGE-SCALE ASCENT...AND UPLIFT ALONG EXISTING COLD

POOL...SHOULD BE SUFFICIENT TO ALLOW UPDRAFTS TO OVERCOME SIZABLE

CAP OVER REGION /SAMPLED BY SPECIAL CLL AND HOUSTON AREA

SOUNDINGS/...AND REALIZE STRONG CAPE PRESENT ABOVE THE CAP.



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 29035.





...CORFIDI

