Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 57, NWS San Angelo, TX

April 16, 2001Irion County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 16, 2001, 10:09 PM CDT for Irion County, Texas. It was in force for 16 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 16, 2001, 10:09 PM CDT (03:09 UTC)
Expired
Apr 16, 2001, 10:25 PM CDT
In force
16 min
Issued by
NWS San Angelo, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Irion County, TX

The radar

The San Angelo radar (KSJT), 47 km from the middle of the area, began a volume at 03:13 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

TimeReportWhereRemark
Apr 16, 10:10 PM CDTHail 1Barnhart, TX

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, 3.2 hours before the alert went out and 136 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 2001-04-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 931 joules per kilogram.LCLEL10008507005003002001001 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 2001-04-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 square meters per square second.19395878Sfc1 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
931 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
2485 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Apr 16, 8:51 PM CDT, 1 hour 18 minutes earlier.

Area forecast discussion, Apr 16, 8:51 PM CDT, 1 hour 18 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 16, 8:00 PM CDTSevere Thunderstorm WarningSJTSterling60 min
Apr 16, 8:44 PM CDTSevere Thunderstorm WarningSJTIrion46 min
Apr 16, 9:28 PM CDTSevere Thunderstorm WarningSJTIrion32 min
Apr 16, 9:59 PM CDTSevere Thunderstorm WarningSJTCrockett61 min
Apr 16, 10:58 PM CDTFlash Flood WarningSJTCrockett, Irion3 hr
Apr 17, 12:29 AM CDTSevere Thunderstorm WarningSJTIrion76 min
Apr 17, 1:08 AM CDTFlash Flood WarningSJTIrion3 hr
Apr 17, 2:28 AM CDTSevere Thunderstorm WarningSJTSchleicher47 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001

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.