Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 4, NWS San Angelo, TX

March 3, 20204 counties in Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Mar 3, 2020, 7:11 PM CST for 4 counties in Texas. It was in force for 49 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: Mar 3, 2020, 7:11 PM CST (01:11 UTC)
Expired: Mar 3, 2020, 8:00 PM CST
In force: 49 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Tornado: Possible
Hail: 0.88 in
Wind: 70.0 mph

Counties Crockett County, TX, Irion County, TX, Schleicher County, TX, Tom Green County, TX

The radar

The San Angelo radar (KSJT), 47 km from the middle of the area, began a volume at 01:12 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.

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 1.2 hours before the alert went out and 190 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: 277 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 1090 m above ground
0-6 km bulk shear: 93 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 294 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.9

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 Mar 3, 6:03 PM CST, 1 hour 8 minutes earlier.

Area forecast discussion, Mar 3, 6:03 PM CST, 1 hour 8 minutes before

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Hazardous weather outlook, Mar 3, 2:43 PM CST, 4 hours 28 minutes before

Hazardous Weather Outlook
National Weather Service San Angelo TX
243 PM CST Tue Mar 3 2020

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-042045-
Fisher-Nolan-Sterling-Coke-Runnels-Irion-Tom Green-Concho-
Crockett-Schleicher-Sutton-Haskell-Throckmorton-Jones-Shackelford-
Taylor-Callahan-Coleman-Brown-McCulloch-San Saba-Menard-Kimble-
Mason-
243 PM CST Tue Mar 3 2020

This Hazardous Weather Outlook is for portions of west central
Texas.

.DAY ONE...This Afternoon and Tonight

Strong to severe thunderstorms are expected tonight between 10 PM
and 7 AM Wednesday morning. The main hazards are large hail and
damaging winds. However, an isolated tornado cannot be ruled out
along and south of a line from Ozona to San Saba. In addition,
heavy rainfall tonight could lead to flooding across the flood
prone areas.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Rain and thunderstorms will continue into Wednesday causing
additional flooding across our flood prone areas.

.SPOTTER INFORMATION STATEMENT...
Spotter activation might be needed tonight.

In the hours before

Special weather statement, Mar 3, 5:56 PM CST, 1 hour 15 minutes before

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Special weather statement, Mar 3, 6:45 PM CST, 26 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 3, 6:45 PM CST	Special Weather Statement	SJT	Irion	45 min
Mar 3, 8:01 PM CST	Special Weather Statement	SJT	Tom Green	29 min
Mar 3, 11:30 PM CST	Special Weather Statement	SJT	Crockett	45 min
Mar 4, 1:20 AM CST	Severe Thunderstorm Warning	SJT	Kimble, Sutton	55 min
Mar 4, 2:19 AM CST	Special Weather Statement	SJT	Kimble	26 min
Mar 4, 2:46 AM CST	Special Weather Statement	SJT	Kimble	44 min
Mar 4, 3:10 AM CST	Special Weather Statement	SJT	Menard	35 min
Mar 4, 3:19 AM CST	Special Weather Statement	SJT	Mason	56 min
Mar 4, 3:45 AM CST	Special Weather Statement	SJT	McCulloch	30 min
Mar 4, 3:55 AM CST	Areal Flood Advisory	SJT	Kimble, Mason, Menard	3 hr
Mar 4, 4:05 AM CST	Special Weather Statement	SJT	Mason	25 min
Mar 4, 4:32 AM CST	Special Weather Statement	SJT	Mason	13 min
Mar 4, 6:32 AM CST	Areal Flood Advisory	SJT	Callahan, Taylor	3 hr
Mar 4, 8:03 AM CST	Areal Flood Advisory	SJT	Tom Green	117 min
Mar 4, 10:27 AM CST	Areal Flood Advisory	SJT	Irion, Schleicher, Tom Green	2 hr
Mar 4, 11:29 AM CST	Areal Flood Advisory	SJT	Tom Green	2 hr
Mar 4, 12:41 PM CST	Areal Flood Advisory	SJT	Irion	2 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2020 Every severe thunderstorm warning in 2020

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; radar from the NEXRAD Level II archive.