Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 13, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Mar 8, 2001, 8:00 PM CST for Harris County, Liberty County, Texas. It was in force for 45 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
- Mar 8, 2001, 8:00 PM CST (02:00 UTC)
- Expired
- Mar 8, 2001, 8:45 PM CST
- In force
- 45 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Harris County, TX, Liberty County, TX
The radar
The Houston radar (KHGX), 77 km from the middle of the area, began a volume at 02:02 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 |
|---|---|---|---|
| Mar 8, 8:20 PM CST | Thunderstorm Wind | Cleveland Muni Arpt, TX | Pine trees down west of airport. |
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 |
|---|---|---|---|
| Mar 8, 6:30 PM CST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 2.0 hours before the alert went out and 180 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1108 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 259 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS54 KHGX 090159
SVRHOU
TXC201-291-090245-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
800 PM CST THU MAR 8 2001
THE NATIONAL WEATHER SERVICE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
HARRIS COUNTY IN SOUTHEAST TEXAS
LIBERTY COUNTY IN SOUTHEAST TEXAS
* UNTIL 845 PM CST
* AT 755 PM CST...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS FROM 5 MILES WEST OF CLEVELAND TO SPRING...
MOVING EAST AT 25 MPH.
* LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORMS INCLUDE...
CLEVELAND
HUMBLE
KINGWOOD...TARKINGTON PRAIRIE
LAKE HOUSTON DAM
KENEFICK
LIBERTY
CROSBY...DAYTON LAKES
MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. STAY AWAY FROM WINDOWS!
EXPECT LARGE HAIL...DAMAGING WINDS AND TORRENTIAL RAIN WITH THIS
STORM. TAKE COVER IN A STRONG SHELTER UNTIL THE STORM PASSES.
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 3037 9514 3018 9509 3004 9522 3006 9540
2986 9510 3010 9472 3033 9478
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 Mar 8, 2:45 PM CST, 5 hours 15 minutes earlier.
Area forecast discussion, Mar 8, 2:45 PM CST, 5 hours 15 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 245 PM CST THU MAR 8 2001 LARGE AREA OF CONVECTION OVER THE HILL COUNTRY EXTENDING NORTH TO NORTH TEXAS WILL PROPAGATE TOWARDS NW ZONES LATE THIS AFTERNOON. CONSIDERABLE CLOUDINESS OVER CWFA HELPING KEEP TEMPERATURES IN CHECK AND IS A KEY FACTOR IN MITIGATING STRONG CONVECTION AT LEAST FOR THE NEXT FEW HOURS. MESO-ETA INDICATE FOCUS SHOULD BE ALONG AND S OF 850 MB AND SFC E-W TROUGH EARLY THIS EVENING...THEN SAGGING SOUTHWARD BY DURING EVENING TOWARDS IAH. SFC LOW SHOULD BE OVER REGION BY MID EVENING W/UPPER LOW TO THE NW (NEAR CLL). EXPECT MUCH OF CONVECTION TO BE OVER COASTAL WATERS BY LATE TONIGHT/EARLY MORNING. STRONG THUNDERSTORMS DURING EVENING MAY PRODUCE 1-2 INCHES DESPITE FAST MOVEMENT OF UPPER LEVEL SYSTEM. EXPECT WIND BEHIND FRONT MEET SCA CRITERIA FOR COASTAL WATERS BUT JUST BELOW THRESHOLD FOR BAYS. AVN INDICATES INCREASE IN PW VALUES LATER ON SUNDAY TO 1.5 INCHES AS GULF OPENS UP. NEXT FRONT EXPECTED TO MOVE ACROSS REGION SUNDAY NIGHT. EARLY NEXT WEEK SHOULD BE BENIGN UNTIL NEXT FRONT ON THURSAY. 37/99 .KHGX...SCA 0-60 NM COASTAL WATERS. SCEC BAYS. CLL BB 050/064 047/066 053 +20 IAH BB 053/066 049/067 055 +20 GLS BB 058/066 055/067 062 +30
In the hours before
Special weather statement, Mar 8, 3:30 PM CST, 4 hours 30 minutes before
TXZ163-164-176>179-195>200-210>214-226-227-235>238-090500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 330 PM CST THU MAR 8 2001 ...HEAVY RAIN POSSIBLE TONIGHT OVER MOST OF SOUTHEAST TEXAS... ...SLIGHT RISK FOR SEVERE THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT... A STRONG UPPER LEVEL STORM SYSTEM WILL MOVE INTO OUR REGION TONIGHT. THE TRACK OF THIS SYSTEM AND ASSOCIATED SURFACE LOW IS FAVORABLE FOR PRODUCING PERIODS OF HEAVY RAIN ACROSS SOUTHEAST TEXAS. IT APPEARS THAT 1 TO 2 INCHES OF RAIN WILL FALL MAINLY NORTH OF A BRENHAM TO HEMPSTEAD TO GALVESTON LINE WITH LESSER AMOUNTS SOUTH OF THIS LINE. THE PERIOD OF HEAVIEST RAIN WILL AFFECT THE COLLEGE STATION AREA BETWEEN 4 PM AND 9 PM...THE HOUSTON METROPOLITAN AREA BETWEEN 6 PM AND MIDNIGHT AND GALVESTON BETWEEN 8 PM AND 3 AM. ALTHOUGH WIDESPREAD FLOODING IS NOT EXPECTED...HEAVY RAIN FALLING ON SATURATED GROUND IN A SHORT PERIOD OF TIME MAY CAUSE SOME RUN-OFF PROBLEMS. MANY OF THE RIVERS ACROSS SOUTHEAST TEXAS ARE ABOVE BANKFULL. ANY ADDITIONAL RAIN OVER THESE RIVER BASINS MAY INCREASE THE POTENTIAL FOR FLOODING. IF FLOODING IS OBSERVED...BE PREPARED TO MOVE TO HIGHER GROUND. ALSO...DUE TO UNUSUALLY STRONG UPPER LEVEL DYNAMICS...THERE IS THE POTENTIAL FOR SOME OF THE STORMS TO PRODUCE BRIEF STRONG WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. THERE IS ALSO SUFFICIENT LOW LEVEL TURNING OF THE WINDS THAT AN ISOLATED TORNADO CAN NOT BE RULED OUT. THE GREATEST THREAT FOR SEVERE WEATHER WILL OCCUR MAINLY LATE THIS AFTERNOON INTO THIS EVENING. EMERGENCY MANAGERS AND STORM SPOTTERS SHOULD PREPARE FOR POSSIBLE ACTIVATION. CHECK BACK WITH NOAA1 WEATHER RADIO OR OTHER NEWS SOURCES FOR THE LATEST STATEMENTS.
Special weather statement, Mar 8, 6:31 PM CST, 1 hour 29 minutes before
GMZ330-335-350-TXZ197>199-210>214-226-227-235>238-090500- SEVERE THUNDERSTORM WATCH 52 NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 631 PM CST THU MAR 8 2001 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR A PORTION OF SOUTHEAST TEXAS UNTIL 11 PM. SOUTHEAST TEXAS COUNTIES IN THE WATCH AREA INCLUDE... AUSTIN...BRAZORIA...CHAMBERS...COLORADO...FORT BEND...GALVESTON... GRIMES...HARRIS...JACKSON...MATAGORDA...MONTGOMERY...WALLER... WASHINGTON...WHARTON...AND THE ADJACENT COASTAL WATERS. SOUTHEAST TEXAS CITIES IN THE WATCH AREA INCLUDE... BRENHAM...NAVASOTA...COLUMBUS...SEALY...HEMPSTEAD...CONROE...EDNA... WHARTON...RICHMOND/ROSENBERG...METRO HOUSTON...CLEVELAND...PALACIOS... ANGLETON...FREEPORT...GALVESTON...AND ANAHUAC. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. SEVERE THUNDERSTORMS CAN PRODUCE WINDS IN EXCESS OF 55 MILES AN HOUR AND LARGE HAIL 3/4 OF AN INCH OR GREATER. IF A SEVERE THUNDERSTORM AFFECTS YOUR LOCATION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. IF OUTSIDE...MOVE TO SHELTER...PREFERABLY INSIDE A STRONG BUILDING. LISTEN TO NOAA WEATHER RADIO OR OTHER NEWS SOURCES FOR THE LATEST STATEMENTS AND POSSIBLE WARNINGS.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 8, 7:31 PM CST | Severe Thunderstorm Warning | HGX | Montgomery | 29 min |
| Mar 8, 8:25 PM CST | Severe Thunderstorm Warning | HGX | Brazoria, Fort Bend, Wharton | 50 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.