Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 5, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jan 29, 2001, 5:01 AM CST for Liberty County, Texas. It was in force for 44 min. 1 report came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Jan 29, 2001, 5:01 AM CST (11:01 UTC)
- Expired
- Jan 29, 2001, 5:45 AM CST
- In force
- 44 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Liberty County, TX
The radar
The Houston radar (KHGX), 89 km from the middle of the area, began a volume at 11:02 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 29, 5:07 AM CST | Thunderstorm Wind | Daisetta, TX | Trees down in Daisetta. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 29, 3:45 AM CST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 11.0 hours before the alert went out and 137 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.
- Mixed-layer CAPE
- 1124 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 526 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 154 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KHGX 291102 SVRHOU TXC291-291145- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 501 AM CST MON JAN 29 2001 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... LIBERTY COUNTY IN SOUTHEAST TEXAS * UNTIL 545 AM CST * AT 457 AM CST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM ALONG A LINE EXTENDING FROM 14 MILES EAST OF MOSS HILL TO 10 MILES SOUTH OF LIBERTY...MOVING EAST AT 20 MPH. * LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORMS INCLUDE... AMES...HARDIN...LIBERTY DEVERS WIND GUSTS IN EXCESS OF 60 MPH CAN BE EXPECTED WITH THESE STORMS. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. STAY AWAY FROM WINDOWS 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 3043 9448 3015 9491 2992 9493 2992 9434
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jan 29, 4:02 AM CST, 59 minutes earlier.
Area forecast discussion, Jan 29, 4:02 AM CST, 59 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION...UPDATE ON WATCH BOXES IN KHGX
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
402 AM CST MON JAN 29 2001
QUITE A DRAMATIC DROP IN TEMPERATURES BEHIND THE COLD FRONT THAT IS
NOW MOVING THROUGH OUR WESTERN ZONES (COLLEGE STATION WENT FROM 67
DEGREES AT 07Z TO 45 DEGREES AT 08Z). SHOWERS AND THUNDERSTORMS
CONTINUE TO INCREASE IN COVERAGE ACROSS ALL OF OUR COUNTY WARNING
AREA AND CONTINUE TO INCREASE IN INTENSITY ALONG A LINE APPROACHING
OUR CENTRAL ZONES. THIS BOUNDARY ALONG AND AHEAD OF THE COLD FRONT
IS LIKELY THE FORMING SQUALL LINE. WITH A 50 KNOT LOW LEVEL JET OFF
THE VWP AND STRENGTHENING UPPER LEVEL WINDS APPROACHING FROM THE
WEST PER WATER VAPOR SATELLITE LOOP...WE STILL HAVE THE RISK OF THIS
LINE OF STORMS BECOMING SEVERE WITH STRONG DAMAGING WINDS THE
PRIMARY THREAT. IN ADDITION...VELOCITY DATA IS CURRENTLY SHOWING
INCREASING LOW LEVEL ROTATION ALONG THE DEVELOPING LINE. SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CST. WE'LL LIKELY
BE ABLE TO REMOVE OUR WESTERN COUNTIES FROM THE WATCH BOX BY THE
TIME THE ZONES COME OUT...BUT SOME OF OUR EASTERN COUNTIES MAY BE
PLACED IN A NEW WATCH BOX AFTER 5 AM. EXPECT RAPID CLEARING BY MID
MORNING TO NOON AND SUNNY SKIES AREAWIDE THIS AFTERNOON. COLD
AIRMASS BEHIND THE FRONT WILL BATTLE WITH WARM WEST WINDS AND
ABUNDANT SUNSHINE THIS AFTERNOON. DUE TO COLDER THAN ANTICIPATED
TEMPERATURES BEHIND THE FRONT...WILL UNDERCUT GUIDANCE HIGH TEMPS
TODAY BY SEVERAL DEGREES. MORE SEASONAL TEMPERATURES WILL PREVAIL
THROUGH THE REST OF THE WEEK. MODELS TRY TO BRING SOME RAIN TO THE
COASTAL COUNTIES ON WEDNESDAY IN RESPONSE TO SURFACE LOW FORMATION
ALONG THE LOWER TEXAS COAST. WILL HOLD OFF ON BRINGING RAIN BACK
INTO THE FORECAST FOR NOW AND WAIT FOR A FEW MORE MODEL RUNS. WILL
ALSO HOLD OFF ON POSSIBLE RAINS THIS WEEKEND DUE TO THE NORMAL
UNCERTAINTY OF THE SPEED AND MOVEMENT OF AN UPPER LOW COMING OUT OF
MEXICO. CONFIDENCE IN THE EXTENDED FORECAST IS ON THE LOW SIDE AT
THIS TIME.
.KHGX...SEVERE THUNDERSTORM WATCH THRU 5 AM FOR TXZ210>212-226
(AUSTIN-COLORADO-WALLER-WHARTON).
SEVERE THUNDERSTORM WATCH THRU 9 AM FOR
TXZ178-179-199-200-213-214-227-237-238
(BRAZORIA-CHAMBERS-FORT BEND-GALVESTON-HARRIS-LIBERTY-
MONTGOMERY-POLK-SAN JACINTO).
SMALL CRAFT ADVISORY ALL WATERS TODAY.
42/47/DH/35/48
PRELIMS...
CLL UU 060/040 068/040 058 400
IAH TU 063/042 068/042 060 +00
GLS TU 063/050 065/049 060 +00In the hours before
Special weather statement, Jan 29, 12:12 AM CST, 4 hours 49 minutes before
TXZ163-164-176>179-195>199-210>213-226-227-291100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1212 AM CST MON JAN 29 2001 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR A PORTION OF SOUTHEAST TEXAS UNTIL 5 AM. SOUTHEAST TEXAS COUNTIES IN THE WATCH AREA INCLUDE... AUSTIN...BRAZOS...BURLESON...COLORADO...FORT BEND....GRIMES... HARRIS...HOUSTON...MADISON...MONTGOMERY...POLK...SAN JACINTO... TRINITY...WALKER...WALLER...WASHINGTON...WHARTON. CENTRAL TEXAS COUNTIES IN THE WATCH AREA INCLUDE... LEON...MILAM...ROBERTSON. CITIES IN THE WATCH AREA INCLUDE... CALDWELL...BRYAN/COLLEGE STATION...MADISONVILLE...CROCKETT... BRENHAM...NAVASOTA...HUNTSVILLE...GROVETON...COLUMBUS...SEALY... HEMPSTEAD...CONROE...COLDSPRING...LIVINGSTON...WHARTON... RICHMOND/ROSENBERG...METRO HOUSTON. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS. LISTEN TO NOAA WEATHER RADIO OR OTHER NEWS SOURCES FOR THE LATEST STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Jan 29, 3:47 AM CST, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 347 AM CST MON JAN 29 2001 TXZ178-179-199-200-213-214-227-237-238-291505- BRAZORIA-CHAMBERS-FORT BEND-GALVESTON-HARRIS-LIBERTY-MONTGOMERY-POLK- SAN JACINTO- 347 AM CST MON JAN 29 2001 ...SEVERE THUNDERSTORM WATCH UNTIL 9 AM... THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR THE EASTERN PORTIONS OF SOUTHEAST TEXAS THROUGH 9 AM. SOME CITIES IN THE WATCH AREA INCLUDE... METRO HOUSTON...CONROE...LIVINGSTON...LIBERTY...GALVESTON...ANAHUAC... LAKE JACKSON. A BAND OF STRONG TO SEVERE THUNDERSTORMS WILL MOVE ACROSS THE AREA OVER THE NEXT FEW HOURS. DAMAGING WINDS WILL BE THE PRIMARY THREAT. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS. LISTEN TO NOAA WEATHER RADIO OR OTHER NEWS SOURCES FOR THE LATEST STATEMENTS AND POSSIBLE WARNINGS. TXZ163-164-176-177-195>198-291505- BRAZOS-BURLESON-GRIMES-HOUSTON-MADISON-TRINITY-WALKER-WASHINGTON- 347 AM CST MON JAN 29 2001 ...SEVERE THUNDERSTORM WATCH CANCELLED... A COLD FRONT HAS PASSED THROUGH THE AREA ENDING THE THREAT OF SEVERE WEATHER. AS A RESULT THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE NORTHWEST COUNTIES IN SOUTHEAST TEXAS. TXZ210>212-226-291505- AUSTIN-COLORADO-WALLER-WHARTON- 347 AM CST MON JAN 29 2001 ...SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 5 AM... STRONG TO SEVERE THUNDERSTORMS WILL CONTINUE TO AFFECT AUSTIN... COLORADO...WALLER...AND WHARTON COUNTIES THROUGH 5 AM. DAMAGING WINDS WILL BE THE PRIMARY THREAT. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS. LISTEN TO NOAA WEATHER RADIO OR OTHER NEWS SOURCES FOR THE LATEST STATEMENTS AND POSSIBLE WARNINGS. 35
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 29, 2:56 AM CST | Severe Thunderstorm Warning | HGX | Montgomery | 64 min |
| Jan 29, 3:35 AM CST | Severe Thunderstorm Warning | HGX | Harris | 40 min |
| Jan 29, 3:38 AM CST | Severe Thunderstorm Warning | HGX | Polk, San Jacinto | 52 min |
| Jan 29, 3:57 AM CST | Severe Thunderstorm Warning | HGX | Liberty, Montgomery | 48 min |
| Jan 29, 5:23 AM CST | Severe Thunderstorm Warning | HGX | Galveston | 52 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning 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.