Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 233, NWS Midland/Odessa, TX
NWS Midland/Odessa, TX issued this severe thunderstorm warning at Sep 18, 2002, 9:36 PM CDT for Glasscock County, Howard County, Texas. It was in force for 3 hr. 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
- Sep 18, 2002, 9:36 PM CDT (02:36 UTC)
- Expired
- Sep 19, 2002, 12:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Midland/Odessa, TX
- Area
- Counties, with a storm outline in the text
Counties Glasscock County, TX, Howard County, TX
The radar
The Midland/Odessa radar (KMAF), 69 km from the middle of the area, began a volume at 02:35 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 |
|---|---|---|---|
| Sep 18, 9:50 PM CDT | Hail 0.75 | Big Spring, TX | |
| Sep 18, 11:00 PM CDT | Thunderstorm Wind 70 E | Countywide, TX | The local utility company reported that powerlines were blown down across a large part of Glasscock County. |
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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Midland Regional, TX (KMAF), launched 00:00Z, 2.6 hours before the alert went out and 70 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
- 1068 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 2684 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
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 Midland/Odessa, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 18, 9:25 PM CDT, 11 minutes earlier.
Area forecast discussion, Sep 18, 9:25 PM CDT, 11 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX 925 PM CDT WED SEP 18 2002 COLD FRONT CURRENTLY EXTENDS FM KCNM...TO KHOB...TO SEMINOLE AND NEWD. PLENTY OF CONVECTION FIRING ALONG FRONT AND WEAK DRYLINE AHEAD OF FRONT...SO HAVE UPPED POPS A NOTCH NERN AREAS. PLENTY OF DEBRIS CLOUD WILL BE LEFT OVR TO WARRANT MOCLDY CONDITIONS MOST PLACES OVERNIGHT. HAVE ALSO TWEAKED WINDS TO ACCOUNT FOR FASTER FROPA THAN PREVIOUSLY ANTICIPATED. .MAF... TX...NONE. NM...NONE. 44
The office that day
Everything else NWS Midland/Odessa, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 7:16 PM CDT | Severe Thunderstorm Warning | MAF | Pecos | 4 hr |
| Sep 18, 10:38 PM CDT | Severe Thunderstorm Warning | MAF | Martin | 2 hr |
| Sep 18, 11:33 PM CDT | Severe Thunderstorm Warning | MAF | Glasscock | 87 min |
| Sep 19, 12:17 AM CDT | Severe Thunderstorm Warning | MAF | Upton | 73 min |
| Sep 19, 12:21 AM CDT | Severe Thunderstorm Warning | MAF | Upton | 39 min |
| Sep 19, 12:42 AM CDT | Severe Thunderstorm Warning | MAF | Glasscock, Reagan | 13 days |
| Sep 19, 12:53 AM CDT | Severe Thunderstorm Warning | MAF | Glasscock | 13 days |
Nearby
Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning in 2002
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.