Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 68, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 11, 2001, 2:30 PM CDT for Harris County, Texas. It was in force for 45 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 11, 2001, 2:30 PM CDT (19:30 UTC)
- Expired
- May 11, 2001, 3:15 PM CDT
- In force
- 45 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Harris County, TX
The radar
The Houston radar (KHGX), 62 km from the middle of the area, began a volume at 19:29 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 12:00Z, 7.5 hours before the alert went out and 231 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
- 542 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 735 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- -27 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 111930 SVRHOU TXC201-112015- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 230 PM CDT FRI MAY 11 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... HARRIS COUNTY IN SOUTHEAST TEXAS * UNTIL 315 PM CDT * AT 228 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER SPRING VALLEY...MOVING NORTHWEST AT 10 MPH. * LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE... SPRING VALLEY...HEDWIG VILLAGE...HILSHIRE VILLAGE...HUNTERS CREEK VILLAGE ADDICKS JERSEY VILLAGE 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 2969 9550 2983 9538 3006 9565 2987 9583
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 11, 12:05 PM CDT, 2 hours 25 minutes earlier.
Area forecast discussion, May 11, 12:05 PM CDT, 2 hours 25 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION...UPDATE NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1205 PM CDT FRI MAY 11 2001 UPDATE...WILL BOOST POPS TO MATCH RADAR TRENDS. MORNING SOUNDINGS A LITTLE DRIER THAN YESTERDAY. 25H WINDS ARE NEUTRAL TO SLIGHTLY CONVERGENT WHICH MAY LIMIT SEA BREEZE ACTIVITY TODAY. 85H DEW PTS ARE DRIER THAN YESTERDAY BUT 85H ANALYSIS REVEALS A WEAK CONVERGENT ZONE OVER N LA AND NE TX JUST SKIRTING THE NORTHERN EDGE OF THE HGX CWA. CONVECTIVE TEMP IS AROUND 80 DEGREES AND LCH/CRP SOUNDINGS DO NOT SHOW A CAP IN PLACE. DO NOT EXPECT MUCH SHRA/TSRA COVERAGE TODAY BUT THERE IS ENOUGH INSTABILITY PRESENT TO POP OFF A FEW SHRA/TSRA. IN OTHER WORDS...NOU CHANGE TO CURRENT FCST. .HGX...NONE. 43/40 PRELIMS... CLL BE 086/066 084/063 086 224 IAH BE 085/066 084/064 085 313 GLS BE 082/070 082/071 082 324
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.