Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 201, NWS Midland/Odessa, TX

August 13, 2002Glasscock County, Reagan County, Texas

NWS Midland/Odessa, TX issued this severe thunderstorm warning at Aug 13, 2002, 7:31 PM CDT for Glasscock County, Reagan County, Texas. It was in force for 59 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 13, 2002, 7:31 PM CDT (00:31 UTC)
Expired: Aug 13, 2002, 8:30 PM CDT
In force: 59 min
Issued by: NWS Midland/Odessa, TX
Area: Counties, with a storm outline in the text

Counties Glasscock County, TX, Reagan County, TX

The radar

The Midland/Odessa radar (KMAF), 75 km from the middle of the area, began a volume at 00:30 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
Aug 13, 8:01 PM CDT	Hail 2.75	Garden City, TX
Aug 13, 8:01 PM CDT	Thunderstorm Wind 61 E	Garden City, TX	A trained spotter reported hail up to the size of baseballs with damaging winds blowing down trees and power lines.

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

Midland Regional, TX (KMAF), launched 00:00Z, 0.5 hours before the alert went out and 76 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1965 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 2733 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

045 
WUUS54 KMAF 140031
SVRMAF
TXC173-383-140130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
730 PM CDT TUE AUG 13 2002

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN GLASSCOCK COUNTY IN WEST TEXAS
  NORTHEASTERN REAGAN COUNTY IN WEST TEXAS

* UNTIL 830 PM CDT

* AT 730 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM 9 MILES NORTHEAST OF ST. LAWRENCE...OR ABOUT 9
  MILES SOUTHEAST OF GARDEN CITY...MOVING SOUTH AT 15 MPH.

* SOME LOCATIONS AFFECTED BY THE STORM INCLUDE...
  GARDEN CITY...ST. LAWRENCE...LEES...AND STILES

HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 60 MPH HAVE BEEN 
REPORTED BY STORM SPOTTERS WITH THIS STORM. TAKE COVER IN A 
SUBSTANTIAL SHELTER.

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS AND LARGE HAIL. 
GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 3209 10128 3208 10160 3139 10160 3139 10128

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 13, 7:09 PM CDT	Severe Thunderstorm Warning	MAF	Ector	66 min
Aug 13, 7:19 PM CDT	Severe Thunderstorm Warning	MAF	Midland	71 min
Aug 13, 7:40 PM CDT	Severe Thunderstorm Warning	MAF	Reeves	50 min
Aug 13, 7:45 PM CDT	Severe Thunderstorm Warning	MAF	Ector	45 min
Aug 13, 8:08 PM CDT	Severe Thunderstorm Warning	MAF	Mitchell	52 min
Aug 13, 8:12 PM CDT	Severe Thunderstorm Warning	MAF	Midland	78 min
Aug 13, 8:17 PM CDT	Flash Flood Warning	MAF	Glasscock, Midland	118 min
Aug 13, 8:31 PM CDT	Severe Thunderstorm Warning	MAF	Reagan	59 min
Aug 13, 8:38 PM CDT	Severe Thunderstorm Warning	MAF	Upton	52 min
Aug 13, 8:51 PM CDT	Severe Thunderstorm Warning	MAF	Howard	99 min
Aug 13, 9:37 PM CDT	Severe Thunderstorm Warning	MAF	Pecos	69 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2002 Every 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.