Alert archive / Texas / Tornado Warnings in 2001

Tornado Warning 38, NWS Houston/Galveston, TX

December 16, 2001Montgomery County, San Jacinto County, Walker County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Dec 16, 2001, 4:52 PM CST for Montgomery County, San Jacinto County, Walker County, Texas. It was in force for 38 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Dec 16, 2001, 4:52 PM CST (22:52 UTC)
Expired
Dec 16, 2001, 5:30 PM CST
In force
38 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties

Counties Montgomery County, TX, San Jacinto County, TX, Walker County, TX

The radar

The Houston radar (KHGX), 123 km from the middle of the area, began a volume at 22:54 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.

What was reported inside it

TimeReportWhereRemark
Dec 16, 5:29 PM CSTTornado F2Pointblank, TXAn F2 Tornado touched down at the Point Lookout West Estates. There were 2 minor injuries. 15 homes were destroyed, with 15 to 20 other homes receiving major damage. Trees and power lines were down. Reported by the Sheriff's office.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 10.9 hours before the alert went out and 218 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Lake Charles Mun, LA at 12:00Z on 2001-12-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1253 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 2001-12-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 194 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1253 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
447 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
194 m²/s²
0-3 km storm-relative helicity
237 m²/s²
Significant tornado parameter
1.2
Supercell composite
8.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

901 
WFUS54 KHGX 162253
TORHOU
TXC339-407-471-162330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
452 PM CST SUN DEC 16 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  WALKER COUNTY IN SOUTHEAST TEXAS
  SAN JACINTO COUNTY IN SOUTHEAST TEXAS
  EXTREME NORTHEAST MONTGOMERY COUNTY IN SOUTHEAST TEXAS

* UNTIL 530 PM CST

* AT 449 PM CST...DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO 6 MILES EAST OF NEW WAVERLY...MOVING NORTHEAST
  AT 45 MPH.

* LOCATIONS IN THE PATH OF THE TORNADO INCLUDE...
  NEW WAVERLY
  OAKHURST
  POINT BLANK...RIVERSIDE

MOVE TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON YOUR CAR
OR MOBILE HOME FOR A STRONG SHELTER 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.

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this tornado warning went out at Dec 16, 2:28 PM CST, 2 hours 24 minutes earlier.

Area forecast discussion, Dec 16, 2:28 PM CST, 2 hours 24 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
228 PM CST SUN DEC 16 2001

SHOWER AND THUNDERSTORM COVERAGE AND INTENSITY HAS BEGUN TO INCREASE
ACROSS PORTIONS OF SOUTHEAST TEXAS THIS AFTERNOON. AT THIS TIME...
THE GREATEST CONCENTRATION IS STILL UP IN FTWS COUNTY WARNING AREA
WHERE THE BEST TRAINING IS OCCURRING. AS THE UPPER LOW NOW OUT IN
WEST TEXAS CONTINUES TO MOVE TO THE EAST...MID AND UPPER LEVEL
FORCING IS EXPECTED TO INCREASE ACROSS OUR AREA...ESPECIALLY IN OUR
NORTHERN ZONES CLOSER TO THE WARM FRONTAL BOUNDARY. THIS WILL RESULT
IN A GREATER THREAT FOR SEVERE THUNDERSTORMS DUE TO PRETTY DECENT
SHEAR. STILL THINK WE CAN GET SOME SEVERE THUNDERSTORMS TO DEVELOP
BEHIND THE MAIN SQUALL LINE THAT IS EXPECTED TO DEVELOP LATER THIS
AFTERNOON AND THIS EVENING. LAPSE RATES WILL BE STEEPENING AS THE
UPPER LOW PROGRESSES CLOSER TO OUR AREA...AND OUR EXTREMELY MOIST
AND UNSTABLE AIRMASS MAY BECOME MORE SUPPORTIVE OF SEVERE STORMS.
WILL KEEP THE MENTION OF SEVERE STORMS AND LOCALLY HEAVY RAINFALL IN
ALL ZONES FOR TONIGHT. SEVERE THREAT WILL BE GONE BY MORNING...BUT
IT IS STILL POSSIBLE SOME SHOWERS MAY LINGER ACROSS THE AREA AROUND
AND SHORTLY AFTER SUNRISE. AFTER MONDAY...DO NOT EXPECT THE RETURN
FLOW TO BE SUFFICIENT FOR ANY POPS WITH THE NEXT FRONTAL PASSAGE ON
WEDNESDAY. THIS FRONT WILL REINFORCE OUR COOL NIGHTS AND MILD DAYS.
THEN BEGINNING ON FRIDAY...A RETURN FLOW DOES BEGIN AS THE NEXT
UPPER LOW DEVELOPS OUT WEST. THERE IS MUCH UNCERTAINTY AS TO HOW
STRONG/HOW DEEP/HOW FAST THIS NEXT UPPER LOW WILL BE. FOR NOW...WILL
CONTINUE TO CALL FOR MOSTLY CLOUDY SKIES AND A CHANCE OF SHOWERS AND
THUNDERSTORMS FRIDAY THROUGH SUNDAY. LOOKS LIKE A MUCH COLDER AND
DRIER AIRMASS MIGHT BE HERE IN TIME FOR THE WEEK OF CHRISTMAS.

42/35/39

.HGX...TORNADO WATCH IN EFFECT TIL 7 PM FOR NORTHERN COUNTIES.
       SCA ALL WATERS TONIGHT.

PRELIMS...
CLL BU 048/063 038/066 042 810
IAH BU 052/064 040/066 042 820
GLS BU 057/062 048/064 052 830

In the hours before

Special weather statement, Dec 16, 2:00 PM CST, 2 hours 52 minutes before
TXZ163-164-176-177-198-170100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
200 PM CST SUN DEC 16 2001

...TORNADO WATCH IN EFFECT UNTIL 700 PM CST...

A TORNADO WATCH IS IN EFFECT FOR PARTS OF SOUTHEAST TEXAS UNTIL 700
PM THIS EVENING. THE WATCH COVERS PARTS OF EAST TEXAS...IN THE
VICINITY OF A WARM FRONT...NEAR WHICH THUNDERSTORMS ARE EXPECTED TO
INTENSIFY.

THE FOLLOWING COUNTIES ARE INCLUDED IN THE WATCH...GRIMES...
HOUSTON...MADISON...TRINITY...AND WALKER.

THUNDERSTORMS HAVE BEGUN DEVELOPING ACROSS PORTIONS OF EAST TEXAS...
IN ADVANCE OF AN APPROACHING UPPER-LEVEL TROUGH. THE INCREASED LIFT
ASSOCIATED WITH THE TROUGH SHOULD ALLOW THE STORMS TO INCREASE IN
INTENSITY AND AREAL COVERAGE. THE SURFACE FRONT...STRONG LOW-LEVEL
WINDS...THE MOVEMENT OF THE UPPER TROUGH...AS WELL AS THE SHEAR
RESULTING FROM THESE FEATURES...WILL CREATE AN ENVIRONMENT FAVORABLE
FOR ROTATING STORMS. SOME OF THE THUNDERSTORMS TO THE WEST HAVE ALREADY
SHOWN SIGNS OF ROTATION.

THIS MEANS SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING TORNADOES...
ARE POSSIBLE...IN AND NEAR THE WATCH AREA. BE ALERT FOR DAMAGING
WINDS AND LARGE HAIL IN THUNDERSTORMS THIS AFTERNOON. IF YOU ARE IN
THE PATH OF A SEVERE THUNDERSTORM OR TORNADO...MOVE INSIDE TO A
REINFORCED STRUCTURE AWAY FROM WINDOWS. REPORT DAMAGING WINDS AND
LARGE HAIL TO LOCAL LAW ENFORCEMENT...AND ASK THEM TO RELAY THE
MESSAGE TO THE NATIONAL WEATHER SERVICE.

ALSO BE ALERT FOR HEAVY RAIN THAT WILL CAUSE HIGH STANDING WATER ON
ROADS AND IN AREAS OF POOR DRAINAGE. DO NOT DRIVE INTO AREAS WITH HIGH
WATER.

A COLD FRONT WILL PASS THROUGH THE REGION TONIGHT...ENDING THE
PRECIPITATION. DRIER AND COOLER WEATHER WILL ACCOMPANY THE ARRIVAL
OF THE WORKWEEK.

39

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 16, 5:26 PM CSTTornado WarningHGXPolk, Trinity49 min

Nearby

Tornado Warnings in Texas, 2001Every tornado warning in 2001Tornadoes in 2001

Sources

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