Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 44, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 16, 2001, 3:39 PM CDT for Brazoria County, Fort Bend County, Harris County, Texas. It was in force for 51 min. 5 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
- Apr 16, 2001, 3:39 PM CDT (20:39 UTC)
- Expired
- Apr 16, 2001, 4:30 PM CDT
- In force
- 51 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Brazoria County, TX, Fort Bend County, TX, Harris County, TX
The radar
The Houston radar (KHGX), 44 km from the middle of the area, began a volume at 20:40 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 |
|---|---|---|---|
| Apr 16, 3:45 PM CDT | Thunderstorm Wind | Richmond, TX | Roof was torn off a mobile home. |
| Apr 16, 4:00 PM CDT | Thunderstorm Wind | Stafford, TX | Fire Department reported a sheet metal roof was ripped off a building and blown into a neighboring daycare. |
| Apr 16, 4:05 PM CDT | Hail 2.75 | Missouri City, TX | |
| Apr 16, 4:35 PM CDT | Hail 0.75 | Manvel, TX | |
| Apr 16, 4:35 PM CDT | Hail 0.75 | Sugarland, 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, 8.7 hours before the alert went out and 235 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
- 1303 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 586 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
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 Apr 16, 2:25 PM CDT, 1 hour 14 minutes earlier.
Area forecast discussion, Apr 16, 2:25 PM CDT, 1 hour 14 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 225 PM CDT MON APR 16 2001 QUICK DISCUSSION THIS AFTERNOON DUE TO SEVERE STORMS. VERY SHORT TERM...SEE THE 940 AM DISCUSSION IT'S HAPPENING NOW. QUARTER TO GOLFBALL-SIZE HAIL REPORTED IN WINNIE BETWEEN 205 AND 220 PM. LATER TONIGHT AND TUE...PREFER AND AVN/ETA BLEND...THEN THE ETA OUT TO 60 HR AS THE AVN OVERPLAYS THE SECONDARY SHORTWAVE IN THE NW FLOW ON WED. FWC/MAV TEMPS SEEMS A BIT TOO WARM FROM TUE AFT-THU AM. GRUMM/HART ANOMALIES ARE AROUND 2 STD BELOW THE MEAN...WHICH SHOULD GENERATE HIGHS IN THE MID TO UPPER 60S AND LOWS IN THE LOWER 40S INLAND. EXTENDED...THE MRF IS MOSTLQY ON TRACK...NO POPS WED-SAT...SLIGHT CHANCE SUN/MON. .HGX...NONE. 31/47/DO PRELIMS... CLL CB 055/066 044/068 050 530 IAH CB 057/068 045/068 050 530 GLS CB 066/070 055/067 058 530
In the hours before
Special weather statement, Apr 16, 10:15 AM CDT, 5 hours 24 minutes before
TXZ199-200-210>214-226-227-235>238-170000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1015 AM CDT MON APR 16 2001 ...SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EARLY EVENING FOR A PORTION OF SOUTHEAST TEXAS... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR THE SOUTHERN HALF OF SOUTHEAST TEXAS THIS AFTERNOON THROUGH EARLY EVENING. THE PRIMARY THREAT AREA IS ALONG AND SOUTH OF U.S. HIGHWAY 90 EAST OF HOUSTON... AND U.S. HIGHWAY 290 WEST OF HOUSTON. THIS INCLUDES ALL OF METRO HOUSTON AND OTHER CITIES SUCH AS RICHMOND/ROSENBERG...GALVESTON... ANGLETON...FREEPORT...WHARTON...EDNA...BAY CITY...AND PALACIOS. THE MAIN THREAT TIME IS NOON TO 7 PM...AND THE PRINCIPAL SEVERE THREAT IS LARGE HAIL. A COLD FRONT ALONG A BRENHAM TO BUSH INTERCONTINENTAL TO LIBERTY LINE WILL SLOWLY DRIFT SOUTH TODAY. SHOWERS AND THUNDERSTORMS HAVE ALREADY DEVELOPED ALONG THE EAST END OF THE FRONT AT MID MORNING... AND MORE ARE EXPECTED THIS AFTERNOON AS DAYTIME HEATING AND SLIGHTLY STRONGER WIND SHEAR DEVELOP OVER THE AREA. THE FREEZING ALTITUDE IS HIGH ENOUGH THAT MINIMALLY SEVERE HAIL IS THE MAIN THREAT. THE SEVERE THREAT IS LIMITEFD...BUT EMERGENCY MANAGERS AND STORM SPOTTERS MAY BE ACTIVATED THIS AFTERNOON. STAY TUNED TO NOAA WEATHER RADIO OR OTHER NEWS SOURCES FOR THE LATEST FORECAST...STATEMENTS...AND POSSIBLE WARNINGS. 31/JWZ
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 7:19 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Grimes | 26 min |
| Apr 15, 8:07 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Montgomery | 38 min |
| Apr 15, 8:35 PM CDT | Severe Thunderstorm Warning | HGX | Burleson, Washington | 55 min |
| Apr 15, 8:47 PM CDT | Severe Thunderstorm Warning | HGX | Montgomery | 43 min |
| Apr 15, 9:24 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 36 min |
| Apr 15, 9:29 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Washington | 46 min |
| Apr 16, 1:55 PM CDT | Severe Thunderstorm Warning | HGX | Chambers | 50 min |
| Apr 16, 2:45 PM CDT | Severe Thunderstorm Warning | HGX | Chambers | 60 min |
| Apr 16, 2:51 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 54 min |
| Apr 16, 3:33 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Washington | 27 min |
| Apr 16, 3:49 PM CDT | Severe Thunderstorm Warning | HGX | Waller | 56 min |
| Apr 16, 3:49 PM CDT | Tornado Warning | HGX | Brazoria, Fort Bend | 26 min |
| Apr 16, 4:00 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Washington | 30 min |
| Apr 16, 4:31 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Fort Bend | 44 min |
| Apr 16, 4:42 PM CDT | Severe Thunderstorm Warning | HGX | Harris, Waller | 63 min |
| Apr 16, 5:15 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Fort Bend | 60 min |
| Apr 16, 6:57 PM CDT | Severe Thunderstorm Warning | HGX | Polk | 33 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.