Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 164, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Dec 13, 2001, 11:07 AM CST for Chambers County, Liberty County, Texas. It was in force for 23 min. 1 report 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
- Dec 13, 2001, 11:07 AM CST (17:07 UTC)
- Expired
- Dec 13, 2001, 11:30 AM CST
- In force
- 23 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Chambers County, TX, Liberty County, TX
The radar
The Houston radar (KHGX), 60 km from the middle of the area, began a volume at 17:07 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 |
|---|---|---|---|
| Dec 13, 11:10 AM CST | Hail 0.75 | Dayton, TX | Liberty Sheriff reported 3/4 inch hail near Dayton, at Raywood and on State highway 321. |
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, 5.1 hours before the alert went out and 150 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
- 47 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 514 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -63 m²/s²
- 0-3 km storm-relative helicity
- 45 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 Dec 13, 9:50 AM CST, 1 hour 17 minutes earlier.
Area forecast discussion, Dec 13, 9:50 AM CST, 1 hour 17 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 950 AM CST THU DEC 13 2001 RADAR ABLAZE WITH ACTIVITY AGAIN THIS MORNING. WARM SECTOR HAS COME INLAND OVR SERN ZONES. LBX AND GLS BOTH HAVE SE WINDS AND 70 DWPTS. HIGH SHEAR ENVIRONMENT IN PLACE TDA. CRP SOUNDING HELICITY ABV 400. MODEL SOUNDINGS SHOW THIS HOLDING IN PLACE THROUGH MID AFTN. WILL HAVE TO KEEP AN EYE OUT FOR ROTATION IN STORMS...ESPECIALLY ALG THE WARM FNT. HAVE HAD SOME PEA SIZE HAIL REPORTS ALSO THIS MORNING. WITH LOWERING WET BULB ZEROES...WILL ALSO BE AT RISK FOR LARGER DIAMETERS AS THE DAY PROGRESSES. DRYING IN THE MID LVLS IS ALSO FCST...AS IS EVIDENT IN THE CRP SOUNDING. DEEPENING SFC LOW ALG COAST SHOULD HELP DRAG CDFNT THRU CWA BY EVENING. DECENT DRYING SETS UP OVERNIGHT. CURR ZFP SEEMS TO HAVE THINGS WELL COVERED. WILL DO SOME TEMP TWEEKING GIVEN CURR READINGS IN THE WARM SECTOR. WINDS AND SEAS UP AGAIN AT 44019. WILL HOIST AN SCEC ALL WATERS. WINDS SHD PICK UP BEHIND CDFNT TO PSBL SCA LVLS TNGT. .HGX...SCEC BAYS AND GULF WATERS. 46/37/49 PRELIMS... CLL TB 059/038 059/043 065 600 IAH TB 071/042 060/044 068 830 GLS TB 073/052 058/054 067 830
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 13, 7:03 AM CST | Severe Thunderstorm Warning | HGX | Liberty | 57 min |
| Dec 13, 9:33 AM CST | Severe Thunderstorm Warning | HGX | Brazoria | 42 min |
| Dec 13, 10:40 AM CST | Special Marine Warning | HGX | 65 min | |
| Dec 13, 1:14 PM CST | Special Marine Warning | HGX | 76 min | |
| Dec 13, 1:45 PM CST | Special Marine Warning | HGX | 2 hr |
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.