Severe Thunderstorm Watch 39

Issued

Mar 28, 2014, 5:19 PM CDT (22:19 UTC)

Expired

Mar 28, 2014, 10:00 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

Counties Austin County, TX, Brazoria County, TX, Chambers County, TX, Colorado County, TX, Fort Bend County, TX, Galveston County, TX, Harris County, TX, Jefferson County, TX, Orange County, TX, Waller County, TX, Wharton County, TX

The Houston radar (KHGX), 49 km from the middle of the area, began a volume at 22:21 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Two or more tornadoes

10%

One or more EF2 to EF5 tornadoes

2%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

70%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 220Mar 28, 6:53 PM CDT

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

Severe Thunderstorm Watches in Texas, 2014Every severe thunderstorm watch in 2014

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.