Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 15, NWS San Angelo, TX

March 8, 2001Kimble County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Mar 8, 2001, 2:54 PM CST for Kimble County, Texas. It was in force for 66 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: Mar 8, 2001, 2:54 PM CST (20:54 UTC)
Expired: Mar 8, 2001, 4:00 PM CST
In force: 66 min
Issued by: NWS San Angelo, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Kimble County, TX

The radar

The San Angelo radar (KSJT), 121 km from the middle of the area, began a volume at 20:57 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
Mar 8, 3:10 PM CST	Hail 0.88	Junction, 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

Del Rio, TX (KDRT), launched 12:00Z, 8.9 hours before the alert went out and 163 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: 43 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 674 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 214 m²/s²
0-3 km storm-relative helicity: 199 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Mar 8, 2:13 PM CST, 41 minutes earlier.

Area forecast discussion, Mar 8, 2:13 PM CST, 41 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
213 PM CST THU MAR 8 2001

AT 20Z THE POTENT UPPER LEVEL LOW WAS SITUATED NEAR BIG SPRING...PER
VISIBLE IMAGERY. PER LOCAL WARNING RADARS...DRYLINE EXTENDED FROM SONORA
AND SAN ANGELO...TO ROBERT LEE AND SWEETWATER. SCATTERED STORMS HAVE
FIRED ON THE DRYLINE...AS EXPECTED. CELL THAT HIT THE SJT REGIONAL
AIRPORT PRODUCED PEA SIZE HAIL...DESPITE PUNY VILS AND MEAGER MID AND
HIGH LRM/S. NO DOUBT COLD CORE ALOFT AIDING CAUSE. SEVERE STORMS STILL
POSSIBLE...MAINLY EAST OF A BALLINGER TO SONORA LINE...AS LOW LEVEL
MOISTURE MORE PLENTIFUL. SEE NEW DAY1 OUTLOOK. ELSEWHERE...EXTENSIVE
WRAP AROUND CLOUDINESS CAN BE SEEN ACROSS NEW MEXICO AND NORTHERN
TEXAS.

BOUNDARY LAYER MOISTURE TO REMAIN RATHER HIGH THROUGHOUT THE FORECAST
PERIOD. EXTENSIVE WRAP AROUND CLOUDINESS AND SCATTERED PRECIP THE RULE
TONIGHT...AS THE UPPER LOW TRACKS ALONG INTERSTATE 20. ON FRIDAY...WEST
CENTRAL TEXAS COMES UNDER THE INFLUENCE OF HIGH PRESSURE AT THE SURFACE
AND ALOFT. BUT DESPITE THE PRESENCE OF DOWNWARD SYNOPTIC SCALE MOTION...
THE BOUNDARY LAYER REMAINS VERY MOIST...DUE IN PART TO RECENT RAINFALL.
AS THE SURFACE RIDGE MOVES EAST OF THE AREA...RETURN FLOW MATERIALIZES...
PROMOTING MORE CLOUD COVER FOR FRIDAY NIGHT AND SATURDAY.

SHOWERS AND THUNDERSTORMS AGAIN POSSIBLE SUNDAY THROUGH TUESDAY...AS YET
ANOTHER UPPER LOW TAKES SHAPE OVER THE DESERT SOUTHWEST.

PRELIMS...

ABI 042/061/043/064 3000
SJT 042/060/044/067 2000
JCT 043/062/043/065 3000

.SJT...NONE.

17

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 8, 2:18 PM CST	Severe Thunderstorm Warning	SJT	Runnels, Tom Green	27 min
Mar 8, 3:13 PM CST	Severe Thunderstorm Warning	SJT	Fisher	47 min
Mar 8, 3:43 PM CST	Severe Thunderstorm Warning	SJT	Taylor	47 min
Mar 8, 4:22 PM CST	Severe Thunderstorm Warning	SJT	Nolan	53 min
Mar 8, 4:29 PM CST	Severe Thunderstorm Warning	SJT	Taylor	61 min
Mar 8, 5:30 PM CST	Severe Thunderstorm Warning	SJT	Taylor	60 min
Mar 8, 5:40 PM CST	Severe Thunderstorm Warning	SJT	Coleman	65 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.