Alert archive / Texas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 21, NWS San Angelo, TX

March 20, 2004Fisher County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Mar 20, 2004, 5:49 PM CST for Fisher County, Texas. It was in force for 26 min. 1 report 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: Mar 20, 2004, 5:49 PM CST (23:49 UTC)
Expired: Mar 20, 2004, 6:15 PM CST
In force: 26 min
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

County Fisher County, TX

What was reported inside it

Time	Report	Where	Remark
Mar 20, 6:00 PM CST	HAIL 1.75	12 N Roscoe, TX	COVERED THE GROUND

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 11.8 hours before the alert went out and 173 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: 342 J/kg
Mixed-layer CIN: -330 J/kg
Mixed-layer LCL: 1601 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 109 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

112 
WUUS54 KSJT 202349
SVRSJT
TXC151-210015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
549 PM CST SAT MAR 20 2004

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN FISHER COUNTY IN WEST CENTRAL TEXAS

* UNTIL 615 PM CST

* AT 545 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO
  GOLF BALL SIZE. THIS STORM WAS LOCATED 2 MILES NORTHWEST OF
  GANNON...OR ABOUT 9 MILES NORTH OF ROSCOE...AND MOVING SOUTHWEST AT
  10 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WILL REMAIN OVER SOUTHWEST OF GANNON TO THE COUNTY LINE.

LAT...LON 3251 10036 3266 10053 3252 10067 3251 10059

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 20, 4:49 PM CST	Severe Thunderstorm Warning	SJT	Nolan	41 min
Mar 20, 5:32 PM CST	Severe Thunderstorm Warning	SJT	Nolan	28 min

Nearby

Severe Thunderstorm Warnings in Texas, 2004 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.