Alert archive / Texas / Tornado Warnings in 2004

Tornado Warning 29, NWS Midland/Odessa, TX

August 21, 2004Pecos County, Texas

NWS Midland/Odessa, TX issued this tornado warning at Aug 21, 2004, 9:42 PM CDT for Pecos County, Texas. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 21, 2004, 9:42 PM CDT (02:42 UTC)
Expired
Aug 21, 2004, 10:45 PM CDT
In force
63 min
Issued by
NWS Midland/Odessa, TX
Area
Counties, with a storm outline in the text

County Pecos County, TX

The radar

The Midland/Odessa radar (KMAF), 173 km from the middle of the area, began a volume at 02:46 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.

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 2.7 hours before the alert went out and 174 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-pSkew-T log-p diagram, Midland Regional, TX at 00:00Z on 2004-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 111 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 00:00Z on 2004-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 89 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
111 J/kg
Mixed-layer CIN
-176 J/kg
Mixed-layer LCL
931 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
303 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KMAF 220242
TORMAF
TXC371-220345-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
942 PM CDT SAT AUG 21 2004

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN PECOS COUNTY IN SOUTHWEST TEXAS

* UNTIL 1045 PM CDT

* AT 937 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A  
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 24 MILES SOUTH  
  OF FORT STOCKTON OVER U.S. HIGHWAY 385. THIS STORM IS MOVING       
  SOUTH AT 15 MPH. THIS STORM HAS A HISTORY OF PRODUCING TORNADOES.

* LOCATIONS IMPACTED INCLUDE...
  U.S. HIGHWAY 385 IN SOUTHERN PECOS COUNTY...

TORNADOES AT NIGHT ARE ESPECIALLY DANGEROUS. DO NOT WAIT UNTIL YOU 
SEE OR HEAR THE TORNADO...IT MAY BE TOO LATE. TAKE COVER NOW.

TO REPORT SEVERE WEATHER ONLY... CALL THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN MIDLAND AT 1 800 597 3220.

LAT...LON 3066 10304 3051 10321 3008 10258 3061 10259

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 21, 7:34 PM CDTSevere Thunderstorm WarningMAFPecos56 min
Aug 21, 7:39 PM CDTSevere Thunderstorm WarningMAFMidland66 min
Aug 21, 7:48 PM CDTTornado WarningMAFPecos57 min
Aug 21, 7:57 PM CDTFlash Flood WarningMAFMidland3 hr
Aug 21, 8:17 PM CDTSevere Thunderstorm WarningMAFGaines58 min
Aug 21, 8:31 PM CDTFlash Flood WarningMAFGaines3 hr
Aug 21, 8:45 PM CDTTornado WarningMAFPecos60 min
Aug 21, 9:53 PM CDTFlash Flood WarningMAFBrewster4 hr
Aug 21, 10:55 PM CDTSevere Thunderstorm WarningMAFPresidio65 min
Aug 21, 10:56 PM CDTSevere Thunderstorm WarningMAFBrewster64 min

Nearby

Tornado Warnings in Texas, 2004Every tornado warning in 2004Tornadoes in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.