Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 42, NWS San Angelo, TX

April 11, 2001McCulloch County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 11, 2001, 2:59 AM CDT for McCulloch County, Texas. It was in force for 31 min. 2 reports 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 11, 2001, 2:59 AM CDT (07:59 UTC)
Expired: Apr 11, 2001, 3:30 AM CDT
In force: 31 min
Issued by: NWS San Angelo, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County McCulloch County, TX

The radar

The San Angelo radar (KSJT), 110 km from the middle of the area, began a volume at 08:01 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

Time	Report	Where	Remark
Apr 11, 3:15 AM CDT	Thunderstorm Wind	Rochelle, TX	Large tree limbs downed during high winds.
Apr 11, 3:20 AM CDT	Hail 1.75	Rochelle, 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 10, 9:30 PM CDT	Tornado Watch	SPC	6 hr
Apr 11, 2:45 AM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 8.0 hours before the alert went out and 249 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: 2079 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 1691 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 259 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.0

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 11, 12:35 AM CDT, 2 hours 24 minutes earlier.

Area forecast discussion, Apr 11, 12:35 AM CDT, 2 hours 24 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE SAN ANGELO TX
1235 PM CDT WED APR 11 2001

UPDATED CURRENT PACKAGE TO REMOVE EXPIRED TORNADO WATCHES AND
CONTINUE WIND ADVISORY FOR ALL ZONES TONIGHT.

.SJT...TORNADO WATCH UNTIL 3 AM ZONES 98-99-113-114-127-128-66-139-
                                      140-73-154-155-168>170
       WIND ADVISORY ALL ZONES THROUGH 3 AM.
       FIRE WEATHER WATCH FOR ALL ZONES ON WEDNESDAY.

HUBER

In the hours before

Local storm report, Apr 11, 12:30 AM CDT, 2 hours 29 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1230 AM CDT WED APR 11 2001

TIME(CDT)  .....CITY LOCATION.....   STATE...EVENT/REMARKS...
           ....COUNTY LOCATION....

1045 PM    25NE SONORA               TX   1.75 INCH HAIL
04/10/01   SUTTON                         GOLF BALL HAIL

1115 PM    5E SAN ANGELO             TX   WIND DAMAGE
04/10/01   TOM GREEN                      NUMEROUS SIGNS DOWN

1205 AM    10E SONORA                TX   1.75 INCH HAIL
04/11/01   SUTTON                         GOLF BALL HAIL

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 9:33 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones	42 min
Apr 10, 9:49 PM CDT	Severe Thunderstorm Warning	SJT	Irion	41 min
Apr 10, 9:53 PM CDT	Severe Thunderstorm Warning	SJT	Sutton	67 min
Apr 10, 10:15 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	45 min
Apr 10, 10:20 PM CDT	Tornado Warning	SJT	Sutton	40 min
Apr 10, 10:42 PM CDT	Severe Thunderstorm Warning	SJT	Irion	48 min
Apr 10, 10:50 PM CDT	Tornado Warning	SJT	Kimble, Menard	55 min
Apr 10, 10:52 PM CDT	Severe Thunderstorm Warning	SJT	Tom Green	38 min
Apr 10, 11:32 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Runnels	58 min
Apr 11, 12:04 AM CDT	Severe Thunderstorm Warning	SJT	Coleman	56 min
Apr 11, 12:24 AM CDT	Severe Thunderstorm Warning	SJT	Menard, Schleicher	66 min
Apr 11, 1:13 AM CDT	Severe Thunderstorm Warning	SJT	Runnels	62 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001 Every 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.