Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 31, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Mar 27, 2001, 1:35 PM CST for Austin County, Waller County, Washington County, Texas. It was in force for 40 min. 2 reports 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
- Mar 27, 2001, 1:35 PM CST (19:35 UTC)
- Expired
- Mar 27, 2001, 2:15 PM CST
- In force
- 40 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
Counties Austin County, TX, Waller County, TX, Washington County, TX
The radar
The Houston radar (KHGX), 127 km from the middle of the area, began a volume at 19:39 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 27, 1:35 PM CST | Hail 0.75 | Brenham, TX | |
| Mar 27, 1:45 PM CST | Hail 0.75 | Brenham, TX |
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, 7.6 hours before the alert went out and 291 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
- 1721 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 275 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 27, 12:05 PM CST, 1 hour 30 minutes earlier.
Area forecast discussion, Mar 27, 12:05 PM CST, 1 hour 30 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1205 PM CST TUE MAR 27 2001
HAVE UPDATED COASTAL MARINE FORECAST AS WIND SPEEDS GOING ABOVE
THRESHOLD FOR SCA CRITERIA COASTAL WATERS...SCEC BAYS.
.HGX...SCA 0-60 NM COASTAL WATERS FROM MATAGORDA SHIP CHANNEL
TO HIGH ISLAND. SCEC BAYS.
37/46
CLL RT 056/051 061/051 070 999
IAH RT 060/055 065/054 072 699
GLS RT 063/060 065/059 069 588In the hours before
Special weather statement, Mar 27, 11:00 AM CST, 2 hours 35 minutes before
TXZ163-164-176>179-195>200-210>213-280400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1100 AM CST TUE MAR 27 2001 ...AREAS OF HEAVY RAIN EXPECTED INTO WEDNESDAY... PERIODS OF MODERATE TO HEAVY RAIN ARE EXPECTED OVER SOUTHEAST TEXAS INTO WEDNESDAY. 1 TO 3 INCHES OF RAIN IS FORECAST OVER THE AREA... WITH THE HEAVIEST TOTALS NORTH OF INTERSTATE 10. BE ALERT FOR HIGH STANDING WATER IN AREAS OF POOR DRAINAGE. WHEN DRIVING...SLOW DOWN AND AVOID SUDDEN SWERVES TO KEEP FROM HYDROPLANING. WHILE SIGNIFICANT FLASH FLOODING IS NOT EXPECTED...SOME AREA WATERWAYS COULD REACH BANKFULL LEVELS. SOIL MOISTURE LEVELS ARE HIGH DUE TO OUR RECENT ABUNDANT RAINFALL. THIS LEADS TO INCREASED RUNOFF INTO AREA STREAMS AND CREEKS...CAUSING THEM TO RISE MORE RAPIDLY. AN UPPER LEVEL DISTURBANCE WILL CROSS THE AREA WEDNESDAY AND WEDNESDAY NIGHT. THE THREAT OF HEAVY RAIN WILL END AS IT MOVES EAST OF THE REGION. STAY TUNED TO LOCAL MEDIA AND NOAA WEATHER RADIO FOR THE LATEST WEATHER AND HYDROLOGIC FORECASTS AND STATEMENTS. END/46
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 2:58 PM CST | Severe Thunderstorm Warning | HGX | Brazoria, Galveston | 47 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.