Alert archive / Texas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 1, NWS San Angelo, TX

February 29, 2004Tom Green County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Feb 29, 2004, 3:49 AM CST for Tom Green County, Texas. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 29, 2004, 3:49 AM CST (09:49 UTC)
Expired
Feb 29, 2004, 4:30 AM CST
In force
41 min
Issued by
NWS San Angelo, TX
Area
Counties, with a storm outline in the text

County Tom Green County, TX

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 9.8 hours before the alert went out and 175 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 2004-02-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 00:00Z on 2004-02-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
843 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 29, 3:22 AM CST, 27 minutes earlier.

Area forecast discussion, Feb 29, 3:22 AM CST, 27 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
322 AM CST SUN FEB 29 2004

.SHORT TERM...
ABBREVIATED DISCUSSION DUE TO AWIPS PROBLEMS. FRONT IN WEST TEXAS
WITH PREFRONTAL DRY LINE NOW PASSING THROUGH THE CENTRAL CWA.
ENOUGH LOW LEVEL CONVERGENCE ALONG THE DRY LINE TO PRODUCE A THIN
LINE OF CONVECTIVE ACTIVITY. RAIN CHANCES WILL END OVER WESTERN
CONCHO VALLEY AND NORTHERN EDWARDS PLATEAU BY DAYBREAK AND OVER THE
REMAINDER OF THE CWA BY NOON.

&&

.LONG TERM...
NEXT UPPER LOW WILL BEGIN TO FORM OVER THE WESTERN STATES THE FIRST
OF THE WEEK AND WILL TRANSITION TO A CLOSED LOW OVER ARIZONA BY
WEDNESDAY MORNING. BOUNDARY LAYER WINDS WILL SHIFT TO THE SE ON
TUESDAY WITH A CHANCE OF RAINFALL ON WEDNESDAY INTO THURSDAY AS UPPER
LOW APPROACHES THE AREA.

&&

.PRELIMINARY POINT TEMPS/POPS...
ABILENE     70  43  70  41 /  40   0   0   0
SAN ANGELO  70  43  71  41 /  10   0   0   0
JUNCTION    71  41  72  41 /  30   0   0  10

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

99/15
Hazardous weather outlook, Feb 28, 2:07 PM CST, 13 hours 42 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Feb 29, 4:21 AM CSTSevere Thunderstorm WarningSJTRunnels39 min

Nearby

Severe Thunderstorm Warnings in Texas, 2004Every 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; the sounding from the Mesonet's radiosonde archive.