Severe Thunderstorm Warning 138, NWS Houston/Galveston, TX

Issued

Aug 22, 2000, 2:03 PM CDT (19:03 UTC)

Expired

Aug 22, 2000, 2:30 PM CDT

In force

27 min

Issued by

NWS Houston/Galveston, TX

Area

Whole counties; the outline is the Mesonet’s reconstruction

Counties Montgomery County, TX, Walker County, TX

The Houston radar (KHGX), 125 km from the middle of the area, began a volume at 19:05 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.

000 
WUUS54 KHGX 221903
SVRHOU
TXC339-471-221930-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
203 PM CDT TUE AUG 22 2000

THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WALKER COUNTY IN SOUTHEAST TEXAS
  MONTGOMERY COUNTY IN SOUTHEAST TEXAS

* UNTIL 230 PM CDT

* AT 200 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER
  MONTGOMERY COUNTY...MOVING NORTHWEST AT 25 MPH.

* LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...RURAL 
  MONTGOMERY COUNTY NORTH OF LAKE CONROE AND RURAL SOUTHWEST WALKER 
  COUNTY

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 3036 9563 3048 9548 3067 9565 3055 9582

NWS Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 22, 10:28 AM CDT, 3 hours 35 minutes earlier.

SOUTHEAST TEXAS FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1028 AM CDT TUE AUG 22 2000

...UPDATED TO ADD CHANCE OF SEVERE FOR THIS AFTERNOON...
AFTER CHECKING SOME OF THE LATEST 12Z MODEL DATA AND CONSIDERING
CURRENT CONDITIONS...HAVE DECIDED TO GO AHEAD WITH SEVERE CHANCES.
WILL ALSO ADD THIS TO THE EVENING WORDING.

PREV DISC...
MAIN FORECAST CHALLENGE TODAY CONCERNS RAIN CHANCES.  FACTORS IN THIS
REGARD ARE THE UPPER LOW LOCATED JUST SOUTHWEST OF BROWNSVILLE AT
12Z...A WEAK SURFACE BOUNDARY ALONG THE UPPER TX COAST...AND AN
UNSTABLE AND MOIST ATMOSPHERE OVER SETX.  FOR THE LAST ITEM PW/S WERE
1.8 AT LCH AND 1.9 AT CRP...LI/S WERE -8 AT LCH AND -6 AT CRP...K-
INDICES WERE 23 AT LCH AND 36 AT CRP...AND CAPES WERE 4600 AT LCH AND
3400 AT CRP.  THE WATER VAPOR AND SOUNDINGS SHOWED SOME DRY AIR
FILTERING INTO THE AREA FROM THE NORTHEAST ACROSS LA AND SOME SHALLOW
LOW-LEVEL STABILITY ACROSS E TX.  FEEL THAT THERE MAY BE SOME ISOLATED
SEVERE CHANCES TOWARD THE EVENING TIME FRAME...BUT WILL HOLD OFF
MENTIONING THIS POSSIBILITY UNTIL THE 4 PM PACKAGE TO CONSIDER THE 12Z
MODEL DATA.  AT THE MOMENT ISOLATED SHOWERS AND THUNDERSTORMS WERE
OCCURRING OVER THE COASTAL WATERS AND IMMEDIATE COASTAL AREAS AS THE
CIRCULATION AROUND THE UPPER LOW HAS INTERACTED WITH THE SURFACE
TROUGH.  FEEL THAT AS THE DAY PROGRESSES A COMBINATION OF DAYTIME
HEATING AND THE SEABREEZE WILL HELP PRODUCE SCATTERED CONVECTION
ACROSS THE FORECAST AREA.  THE MOTION OF THE STORMS WILL LIKELY BE
NORTHWESTWARD AT FIRST...THEN TURN TOWARD THE WEST AS THE STORMS GET
STRONGER.  POPS FOR THE MOST PART LOOK GOOD...THOUGH WILL UP THE
CENTRAL A^REAS TO 30 PERCENT IN THE SECOND PERIOD TO MAINLY ACCOUNT FOR
THE EXPECTED COVERAGE DURING THE EARLY EVENING HOURS.

PL-40
41

.HGX...NONE.

Severe Thunderstorm Warnings in Texas, 2000Every severe thunderstorm warning in 2000

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.