Alert archive / Texas / Tornado Warnings in 2004

Tornado Warning 8, NWS Amarillo, TX

June 21, 2004Potter County, Texas

NWS Amarillo, TX issued this tornado warning at Jun 21, 2004, 6:26 PM CDT for Potter County, Texas. It was in force for 64 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: Jun 21, 2004, 6:26 PM CDT (23:26 UTC)
Expired: Jun 21, 2004, 7:30 PM CDT
In force: 64 min
Issued by: NWS Amarillo, TX
Area: Counties, with a storm outline in the text

County Potter County, TX

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 21, 3:45 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.4 hours before the alert went out and 32 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: 811 J/kg
Mixed-layer CIN: -219 J/kg
Mixed-layer LCL: 1583 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 268 m²/s²
0-3 km storm-relative helicity: 361 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

285 
WFUS54 KAMA 212326
TORAMA
TXC375-220030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
624 PM CDT MON JUN 21 2004

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* TORNADO WARNING FOR...
  POTTER COUNTY IN THE PANHANDLE OF TEXAS

* UNTIL 730 PM CDT

* AT 624 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE MOST DANGEROUS
  PORTION OF THE STORM WAS LOCATED 6 MILES SOUTH OF VALLEY DE ORO...
  OR ABOUT 19 MILES NORTHWEST OF AMARILLO...MOVING SOUTHEAST AT 5
  MPH.

* SOME LOCATIONS AFFECTED BY THE STORM INCLUDE...
  VALLEY DE ORO AND JUST NORTH OF AMARILLO

A TORNADO MAY FORM AT ANY TIME-TAKE COVER NOW ABANDON MOBILE HOMES
AND VEHICLES FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS.

LAT...LON 3560 10215 3519 10215 3520 10165 3561 10163

$$

The office that day

Everything else NWS Amarillo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 20, 7:00 PM CDT	Severe Thunderstorm Warning	AMA	Sherman	60 min
Jun 20, 8:36 PM CDT	Severe Thunderstorm Warning	AMA	Moore	54 min
Jun 21, 5:29 PM CDT	Severe Thunderstorm Warning	AMA	Potter	61 min

Nearby

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