Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 63, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 6, 2001, 9:43 PM CDT for Montgomery County, San Jacinto County, Walker County, Texas. It was in force for 47 min. No storm report in the archive falls 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.
The facts
- Issued
- May 6, 2001, 9:43 PM CDT (02:43 UTC)
- Expired
- May 6, 2001, 10:30 PM CDT
- In force
- 47 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Montgomery County, TX, San Jacinto County, TX, Walker County, TX
The radar
The Houston radar (KHGX), 131 km from the middle of the area, began a volume at 02:46 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.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 2.7 hours before the alert went out and 202 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
- 1111 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 777 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- -46 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- -0.2
- Supercell composite
- -1.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KHGX 070243 SVRHOU TXC339-373-407-471-070330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 943 PM CDT SUN MAY 6 2001 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SAN JACINTO COUNTY IN SOUTHEAST TEXAS WALKER COUNTY IN SOUTHEAST TEXAS POLK COUNTY IN SOUTHEAST TEXAS MONTGOMERY COUNTY IN SOUTHEAST TEXAS * UNTIL 1030 PM CDT * AT 936 PM CDT...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES NORTHEAST OF ONALASKA TO 5 MILES NORTH OF MONTGOMERY...MOVING SOUTHEAST AT 20 MPH. * LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORMS INCLUDE... ONALASKA...POINT BLANK...MONTGOMERY NEW WAVERLY PINEHURST LEGGETT...SEVEN OAKS WILLIS...LAKE CONROE DAM LIVINGSTON 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 3097 9500 3042 9581 3010 9570 3077 9457
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 May 6, 8:20 PM CDT, 1 hour 23 minutes earlier.
Area forecast discussion, May 6, 8:20 PM CDT, 1 hour 23 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 820 PM CDT SUN MAY 6 2001 LN OF STG TO SVR TSTMS ENTERING NRN ZONES ATTM. WILL UP POPS N AND CTRL FIRST PERIOD. SHD SEE A LULL IN THE ACTION TMRW MORNING AND EARLY AFTN. ANOTHER ROUND PSBL TMRW AFTN AND EVENING ALG SFC FNTL BOUNDARY. NO CHG TO REST OF PKG. BROAD H5 TROF WILL GRADUALLY MOVE E...LEAVING AREA IN A WEAK NW FLOW BY 60 HRS...CONTG INTO THE WEEKEND. ISOLD TO SCT CONVECTION PSBL DIURNALLY REST OF WEEK. REST OF FCST LEFT ALONE BEYOND FIRST PERIOD. .HGX...NONE. PRELIMS... CLL EE 066/084 066/082 062 834 IAH EE 068/084 067/082 063 734 GLS EE 073/081 071/079 070 4433
In the hours before
Special weather statement, May 6, 6:47 PM CDT, 2 hours 56 minutes before
TXZ163-164-176>179-195>200-210>213-227-070600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 647 PM CDT SUN MAY 6 2001 ...TORNADO WATCH IN EFFECT FOR INLAND PORTIONS OF SOUTHEAST TEXAS UNTIL 100 AM TONIGHT... THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH UNTIL 100 AM TONIGHT FOR THE FOLLOWING COUNTIES IN SOUTHEAST TEXAS... AUSTIN...BRAZOS...BURLESON...COLORADO...FORT BEND...GRIMES... HARRIS...HOUSTON...MADISON...MONTGOMERY...POLK...SAN JACINTO... TRINITY...WALKER...WALLER...AND WASHINGTON. THE TORNADO WATCH INCLUDES METRO HOUSTON. THE ATMOSPHERE THIS EVENING IS VERY UNSTABLE. THIS MEANS THAT THE AIRMASS NEAR THE SURFACE IS WARM AND MOIST...WHILE COOLER DRIER CONDITIONS EXIST ALOFT. THIS COMBINED WITH AN UPPER LEVEL DISTURBANCE CROSSING THE AREA COULD LEAD TO SEVERE THUNDERSTORMS AND ISOLATED TORNADOES OVER THE AREA. BE ALERT FOR THE POSSIBILITY OF LARGE HAIL...DAMAGING WINDS...AND POSSIBLY A TORNADO IN ANY THUNDERSTORMS TONIGHT. THE RISK FOR SEVERE WEATHER WILL BEGIN NEAR 800 PM IN THE EXTREME NORTH PART OF THE REGION...SPOTS SUCH AS COLLEGE STATION...MADISONVILLE AND CROCKETT... WHILE AREAS FURTHER SOUTH SUCH AS CLEVELAND...METRO HOUSTON AND COLUMBUS WOULD LIKELY NOT EXPERIENCE SEVERE WEATHER UNTIL LATE THIS EVENING. STAY TUNED TO NOAA WEATHER RADIO AND LOCAL MEDIA FOR THE LATEST UPDATES. REMEMBER...THE SAFEST PLACE TO BE IN A SEVERE THUNDERSTORM OR A TORNADO IS THE LOWEST FLOOR OF A REINFORCED BUILDING...AWAY FROM WINDOWS. END/46
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 7:04 PM CDT | Severe Thunderstorm Warning | HGX | Houston | 41 min |
| May 6, 8:23 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Madison | 52 min |
| May 6, 9:43 PM CDT | Severe Thunderstorm Warning | HGX | Polk | 47 min |
| May 6, 10:05 PM CDT | Severe Thunderstorm Warning | HGX | Burleson, Washington | 40 min |
| May 7, 6:49 PM CDT | Severe Thunderstorm Warning | HGX | Wharton | 41 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.