Severe Thunderstorm Warning 76, NWS Houston/Galveston, TX

SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
232 AM CDT SUN APR 27 1997

UPPER LOW TO THE SW BEGINNING TO MOVE TOWARD TX.  SPEED MAX CURRENTLY
MOVING TO THE N THROUGH TX ASSISTING SVR TSTM DEVELOPMENT.  LARGE
HAIL HAS BEEN REPORTED WITH A VIL FOR THIS CELL RIGHT AROUND 50.
MORE STORMS TO THE S ARE MOVING N TOWARD HOUSTON AREA.  SO FAR...NO
FLOODING PROBLEMS ANYWHERE.  MODELS SHOW MOST SIGNIFICANT UVV VALUES
FROM LA EASTWARD WHERE THETA-E RIDGE SHIFTS TO DURING THIS FORECAST.
UNCERTAIN AS TO HOW MUCH RAIN WILL DEVELOP WITH THE CURRENT ACTIVITY
MOVING THIS WAY FROM THE S.  WITH UPPER LOW STILL PROGGED TO MOVE
RIGHT ACROSS SE TX...ELEVATED STORMS STILL CAPABLE OF DUMPING SOME
LOCALLY HEAVY RAINS.  WOULD THEREFORE LIKE TO KEEP THE FLASH FLOOD
WATCH UP FOR THIS MORNING FOR ALL OF SE TX AND MENTION LOCALLY HEAVY
RAINS IN THE ZONES.  COASTAL FLOOD WARNING WILL NOT NEED TO BE
REISSUED.  WINDS HAVE BEEN FROM THE N TO NW FOR A WHILE NOW...AND
TIDE READINGS FROM THE HOUSTON/GALVESTON PORTS SYSTEM ARE DOWN TO
1.50 TO 2 FEET ABOVE NORMAL.  EXPECT THESE READINGS TO CONTINUE TO
DECREASE.  WILL COVER SITUATION WITH AN MWSHOU.

MOISTURE VALUES BEGIN TO DECREASE AFTER 36 HOURS (12Z MONDAY MORNING)
AS LOW PRESSURE NEAR THE ARKLATEX CONTINUES TO MOVE OFF TO THE E.
WILL CALL FOR SKIES TO BECOME PARTLY CLOUDY ON MONDAY AND WILL BRING
RAIN CHANCES DOWN TO ZERO.  DRY COUPLE OF DAYS TO FOLLOW AFTER MONDAY.

PRELIM DETAILS ARE NEXT.

     FLASH FLOOD WATCH THIS MORNING
     LOCALLY HEAVY RAIN POSSIBLE TODAY

CLL T/C BECOMING B/V 63/51 76 51  6400
IAH T/C BECOMING B/V 66/55 76 52  7400
GLS T/C BECOMING B/V 67/62 74 60  7400

42

TXZ163-164-176>179-195>200-210>214-226-227-235>238-271230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
621 AM CDT SUN APR 27 1997

...THE SEVERE THUNDERSTORM WATCH FOR SOUTHEAST TEXAS HAS EXPIRED...

A LINE OF SHOWERS AND THUNDERSTORMS CONTINUES OVER PORTIONS OF
SOUTHEAST TEXAS FROM NEAR LAKE LIVINGSTON SOUTH AND WEST THROUGH
GALVESTON COUNTY.  THIS LINE OF SHOWERS AND THUNDERSTORMS IS MOVING
TO THE NORTH AND NORTHEAST AT 35 TO 40 MPH.  RELATIVELY STABLE AIR
WEST OF THIS LINE WILL INHIBIT THE FURTHER DEVELOPMENT OF SEVERE
THUNDERSTORMS.  SCATTERED TO NUMEROUS SHOWERS WILL CONTINUE OVER
SOUTHEAST TEXAS THROUGH THE MORNING HOURS...HOWEVER THE THREAT OF
SEVERE THUNDERSTORMS HAS MOVED EAST TOWARDS THE LOUISIANA BORDER.

HEAVY RAINS REMAIN A POSSIBILITY.  A FLASH FLOOD WATCH REMAINS IN
EFFECT FOR ALL OF SOUTHEAST TEXAS THROUGH THIS MORNING.

IF WEATHER RELATED DAMAGE IS OBSERVED...PLEASE RELAY ALL REPORTS TO
YOUR LOCAL LAW ENFORCEMENT AGENCY FOR IMMEDIATE RELAY TO THE
NATIONAL WEATHER SERVICE.

STAY TUNED TO WEATHER NEWS SOURCES FOR FURTHER UPDATES.

TXZ163-164-176>179-195>200-210>214-226-227-235>238-271230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
621 AM CDT SUN APR 27 1997

...THE SEVERE THUNDERSTORM WATCH FOR SOUTHEAST TEXAS HAS EXPIRED...

A LINE OF SHOWERS AND THUNDERSTORMS CONTINUES OVER PORTIONS OF
SOUTHEAST TEXAS FROM NEAR LAKE LIVINGSTON SOUTH AND WEST THROUGH
GALVESTON COUNTY.  THIS LINE OF SHOWERS AND THUNDERSTORMS IS MOVING
TO THE NORTH AND NORTHEAST AT 35 TO 40 MPH.  RELATIVELY STABLE AIR
WEST OF THIS LINE WILL INHIBIT THE FURTHER DEVELOPMENT OF SEVERE
THUNDERSTORMS.  SCATTERED TO NUMEROUS SHOWERS WILL CONTINUE OVER
SOUTHEAST TEXAS THROUGH THE MORNING HOURS...HOWEVER THE THREAT OF
SEVERE THUNDERSTORMS HAS MOVED EAST TOWARDS THE LOUISIANA BORDER.

HEAVY RAINS REMAIN A POSSIBILITY.  A FLASH FLOOD WATCH REMAINS IN
EFFECT FOR ALL OF SOUTHEAST TEXAS THROUGH THIS MORNING.

IF WEATHER RELATED DAMAGE IS OBSERVED...PLEASE RELAY ALL REPORTS TO`
YOUR LOCAL LAW ENFORCEMENT AGENCY FOR IMMEDIATE RELAY TO THE
NATIONAL WEATHER SERVICE.

STAY TUNED TO WEATHER NEWS SOURCES FOR FURTHER UPDATES.