Severe Thunderstorm Warning 5, NWS Houston/Galveston, TX

SOUTHEAST TEXAS FORECAST DISCUSSION...UPDATED FOR SVR TSTM WATCH INFO
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
305 PM CST FRI MAR 10 2000

WIDELY SCATTERED SHOWERS AND A FEW THUNDERSTORMS ARE BEGINNING TO
DEVELOP ACROSS SOUTHEAST TEXAS DUE TO SOME DESTABILIZATION FROM
DAYTIME HEATING (INLAND TEMPERATURES ARE IN THE 80S). RISK FOR
SEVERE DEVELOPMENT WILL CONTINUE TO INCREASE AS THE AFTERNOON
PROGRESSES AND WILL CONTINUE ON INTO THE EVENING AND OVERNIGHT HOURS
AS ACTIVITY DEVELOPING ALONG THE DRYLINE OUT WEST ORGANIZES/
STRENGTHENS AND HEADS THIS WAY. DEEPENING UPPER LOW TAKING SHAPE
AROUND THE TEXAS PANHANDLE WILL MOVE TO THE EAST SOUTHEAST ALONG
THE RED RIVER AND PROVIDE ENHANCED LIFT TONIGHT. PER SPC
COORDINATION CALLS...PORTIONS OF SOUTHEAST TEXAS (INCLUDING THE
HOUSTON AND COLLEGE STATION AREAS) WILL BE PLACED IN A SEVERE
THUNDERSTORM WATCH BEFORE 22Z THAT WILL LIKELY LAST UNTIL 03Z OR
04Z. AN SPSHOU WILL BE ISSUED BEFORE 22Z FOR THIS WATCH. WILL UPDATE
THE AFDHOU WITHIN THE NEXT HOUR TO IDENTIFY WHICH OF OUR COUNTIES
ARE IN THE WATCH. EXPECT SEVERE RISK TO LINGER THROUGH THE EVENING
AND OVERNIGHT HOURS AS THE LINE OF STORMS MOVES ON THROUGH. PREVIOUS
FORECASTER HAD ACTIVITY LINGERING ALONG THE COAST IN THE MORNING...
AND THIS STILL SEEMS POSSIBLE. RAPID CLEARING...BREEZY CONDITIONS...
AND COOLER TEMPERATURES ARE IN STORE FOR THE AREA ON SATURDAY BEHIND
THE FRONT. HIGH PRESSURE MOVES OVERHEAD SATURDAY NIGHT AND SUNDAY
REDUCING THE WINDS AND CONTINUING THE BELOW NORMAL TEMPERATURES. THE
HIGH WILL MOVE OFF TO THE EAST ON MONDAY RESULTING IN INCREASING
CLOUDS AND THE INTRODUCTION OF RAIN CHANCES BACK INTO THE FORECAST
FOR TUESDAY AND WEDNESDAY AS THE NEXT UPPER SYSTEM APPROACHES FROM
THE WEST.

.KHGX...SEVERE THUNDERSTORM WATCH THROUGH 04Z FOR ALL SE TX COUNTIES
        EXCEPT JACKSON AND MATAGORDA
        (TXZ163-164-176>179-195>200-210>214-226-227-237-238)
     ...SMALL CRAFT ADVISORY TONIGHT AND SATURDAY FOR ALL BAYS AND
        COASTAL WATERS.

42/37/46/34/38/31/WT

PRELIMS...
CLL UU 045/064 038/068 050 42700
IAH UU 051/066 039/068 051 42;5-0
GLS UU 057/063 049/065 056 42530

TXZ163-164-176>179-195>200-210>214-226-227-235>238-110000-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1100 AM CST FRI MAR 10 2000

...A SLIGHT TO MODERATE RISK OF SEVERE THUNDERSTORMS EXISTS THIS
AFTERNOON THROUGH TONIGHT FOR MUCH OF SOUTHEAST TEXAS...

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS OVER THE NORTHERN
HALF OF SOUTHEAST TEXAS LATE THIS AFTERNOON INTO TONIGHT. THE
MODERATE RISK AREA IS GENERALLY ALONG AND NORTH OF I-10. A SLIGHT
RISK OF SEVERE THUNDERSTORMS SURROUNDS THE MODERATE RISK AREA AND
INCLUDES THE REST OF SOUTHEAST TEXAS.

A STRONG UPPER LEVEL DISTURBANCE APPROACHING WEST TEXAS THIS MORNING
WILL MOVE EAST CAUSING A LOW PRESSURE SYSTEM TO DEVELOP OVER EASTERN
TEXAS BY LATE AFTERNOON. THE LOW PRESSURE AREA WILL MOVE NORTHEAST
AND DRAG A COLD FRONT ACROSS THE AREA TONIGHT. THESE SYSTEMS WILL
COMBINE TO PRODUCE A GOOD CHANCE OF THUNDERSTORMS AS EARLY AS LATE
THIS AFTERNOON AND ON INTO TONIGHT.

SOME OF THE STORMS HAVE THE POTENTIAL TO BECOME SEVERE. THE PRIMARY
SEVERE WEATHER THREAT WILL BE DAMAGING DOWNBURST WINDS ALTHOUGH
THERE IS ENOUGH TURNING OF THE WIND TO PRODUCE AN ISOLATED TORNADIC
THUNDERSTORM. COLD AIR ALOFT WOULD ALSO SUPPORT THE THREAT OF LARGE
HAIL.

THIS IS A DEVELOPING WEATHER SITUATION. SEVERE THUNDERSTORM OR
TORNADO WATCHES THAT WILL BE ISSUED LATER THIS AFTERNOON AND THIS
EVENING WILL LIKELY INCLUDE SOME SOUTHEAST TEXAS COUNTIES...
ESPECIALLY THOSE NORTH OF I-10.

SKYWARN SPOTTERS AND EMERGENCY MANAGEMENT OFFICIALS ARE STRONGLY
URGED TO KEEP ABREAST TO THIS DEVELOPING SEVERE WEATHER THREAT.
ACTIVATION MAY BE NEEDED LATER THIS AFTERNOON AND ON INTO TONIGHT.

KEEP AN EYE TO THE SKY LATER TODAY AND IF DARK THREATENING SKIES
APPROACH YOUR AREA...SEEK SHELTER IN A STURDY STRUCTURE.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL OR CABLE TELEVISION...
OR RADIO FOR THE LATEST ON THIS DEVELOPING SEVERE WEATHER THREAT.

TXZ163-164-176>179-195>200-210>214-226-227-237-238-110400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
343 PM CST FRI MAR 10 2000

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 1000 PM THIS
EVENING...

THE STORM PREDICTION CENTER HAS PLACED A LARGE PORTION OF SOUTHEAST
TEXAS IN A SEVERE THUNDERSTORM WATCH UNTIL 1000 PM THIS EVENING.
THE WATCH INCLUDES METRO HOUSTON/GALVESTON...COLLEGE STATION...
COLUMBUS...MADISONVILLE...CROCKETT...HUNTSVILLE...CONROE...AND
LIBERTY. AT PRESENT...MATAGORDA AND JACKSON COUNTIES ARE NOT
INCLUDED...BUT MAY BE ADDED LATER THIS EVENING.

A STRONG COLD FRONT IS PROGRESSING SOUTHEASTWARD TOWARD THE AREA FROM
CENTRAL TEXAS. THE AIRMASS AHEAD OF THE FRONT IS WARM AND MOIST.
COOLER DRIER AIR IS FOUND BEHIND THE FRONT. WINDS IN THE ATMOSPHERE
ARE ALSO INCREASING IN SPEED WITH HEIGHT. THE COMBINATION OF SHEAR...
INSTABILITY AND THE STRONG BOUNDARY HEADED FOR THE REGION COULD CAUSE
SOME OF THE STORMS TO BE SEVERE...PRODUCING DAMAGING WIND GUSTS AND
LARGE HAIL. AN ISOLATED TORNADO IS ALSO POSSIBLE.

THE SEVERE WEATHER THREAT FOR THE AREA WILL BE GREATEST THIS
EVENING BEFORE THE PASSAGE OF THE COLD FRONT. THE FRONT IS EXPECTED TO
REACH THE BRYAN/COLLEGE STATION AREA THIS EVENING...METRO HOUSTON
BETWEEN MIDNIGHT AND 300 AM...AND THE COASTLINE SHORTLY THEREAFTER.

IF YOU ARE IN THE PATH OF A THUNDERSTORM THROUGH THIS EVENING...BE
ALERT FOR DAMAGING WINDS AND LARGE HAIL. THE BEST PLACE TO BE IN
SEVERE WEATHER IS INSIDE A REINFORCED STRUCTURE AWAY FROM WINDOWS.

LISTEN TO NOAA WEATHER RADIO AND LOCAL MEDIA FOR ADDITIONAL
STATEMENTS AND POSSIBLE WARNINGS THROUGH THE EVENING.