Severe Thunderstorm Warning 86, NWS Houston/Galveston, TX

Issued

Aug 15, 2002, 4:33 AM CDT (09:33 UTC)

Expired

Aug 15, 2002, 9:15 AM CDT

In force

5 hr

Issued by

NWS Houston/Galveston, TX

Area

Counties, with a storm outline in the text

County Galveston County, TX

The Houston radar (KHGX), 31 km from the middle of the area, began a volume at 09:35 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.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

061 
WUUS54 KHGX 150933
SVRHOU
TXC167-151015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
432 AM CDT THU AUG 15 2002

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GALVESTON COUNTY IN SOUTHEAST TEXAS

* UNTIL 515 AM CDT

* AT 430 AM CDT...DOPPLER RADAR INDICATED A CLUSTER OF SEVERE        
  THUNDERSTORMS ALONG AND JUST OFFSHORE OF GALVESTON ISLAND. THIS    
  CLUSTER WILL MOVE NORTHEAST AT 25 MPH OVER GALVESTON ISLAND AND    
  LIKELY PRODUCE WIND GUSTS IN EXCESS OF 60 MPH. 

* LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORMS INCLUDE...
  JAMAICA BEACH
  GALVESTON STATE PARK
  GALVESTON
  TIKI ISLAND

MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. STAY AWAY FROM WINDOWS

STRONG WINDS MAY KNOCK DOWN TREES AND POWER LINES OR DAMAGE
BUILDINGS. TAKE COVER NOW

PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE...
OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE
NATIONAL WEATHER SERVICE.

LAT...LON 2907 9514 2902 9496 2941 9462 2939 9485

NWS Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 15, 2:50 AM CDT, 1 hour 43 minutes earlier.

SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
250 AM CDT THU AUG 15 2002

WIDESPREAD SHWRS AND TSTMS OCCURRING EARLY THIS AM ALONG COASTAL
ZONES AND OFFSHORE EAST OF MID/UPPER LEVEL TROF AXIS WHICH IS
SHIFTING EAST INTO FA.

MAIN FORECAST CONCERN IS 1ST PD POPS AS THERE IS LIKELY TO BE A
DECENT GRADIENT TODAY ACROSS INLAND ZONES. HAVE DECIDED TO TREND
FORECAST WITH A COMPROMISE OF AVN/ETA PRECIP FIELDS. HOWEVER...COULD
MAKE SOME LAST MINUTE ADJUSTMENTS BASED ON RADAR TRENDS LATER THIS
MORN. BELIEVE SHWRS/TSTMS WILL BE ONGOING TO START THE DAY ACROSS
COASTAL ZONES AND PORTIONS OF CENTRAL ZONES. WILL TAPER POPS WITH
EXPECTED PW FIELD WITH 2+ INCHES ACROSS CENTRAL AND COASTAL ZONES
AND LESS THAN 2 INCHES ACROSS N/NW ZONES. WILL ALSO MENTION HEAVY
RAIN IN ALL BUT N/NW ZONES. LIKELY TO SEE AVERAGE AMOUNTS OF 1 TO 2
INCHES WITH ISOLATED 3 TO 5 INCH AMOUNTS ALONG AND SE OF AN EL CAMPO
TO HOUSTON TO CLEVELAND LINE. WILL KEEP LOW CHC POPS FOR 2ND
PERIOD ACROSS THIS AREA...BUT HEAVY RAIN THREAT SHOULD SHIFT NE
OF AREA LATE THIS AFTERNOON AND EVENING.

WILL CONTINUE TO ADVERTISE A DECREASE IN POPS FOR FRIDAY. HOWEVER...
THINK WITH MID-LEVEL WEAKNESS OVER FORECAST AREA WHICH IS SANDWICHED
BETWEEN WEST COAST RIDGE AND BERMUDA HIGH WILL STILL SEE SCT
CONVECTION WITH HEATING FOR ALL BUT N/NW ZONES...SO WILL FORECAST
SLIGHTLY HIGHER THAN GUIDANCE. WILL KEEP CHC ON SAT BUT LOWER TO
SLIGHT CHC ON SUN AS HEIGHTS RISE OVER AREA AND LIKELY TO SEE MORE
SYNOPTIC SCALE SUBSIDENCE FROM RIDGE TO THE WEST.

HIGH TEMPS TODAY AT MOST LOCATIONS SHOULD BE BELOW GUIDANCE NUMBERS
GIVEN EXPECTED PRECIP AND CLOUDS. THE TOUGH AREA WILL BE THE NW
ZONES WHERE SOME HEATING WILL LIKELY OCCUR.

FOR MARINE AREA...WILL KEEP ADVISORY FOR GULF WATERS FOR SEAS AND
HAVE CAUTION MENTIONED FOR BAYS TODAY.

33/47

.HGX....SCA GULF WATERS AND SCEC BAYS

PRELIMS...
CLL EB 092/076 094/075 095 423
IAH TB 088/076 092/076 094 734
GLS TB 086/080 088/080 089 +44
SW COAST                   834

Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning in 2002

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.