Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 18, NWS San Angelo, TX

March 18, 2020Haskell County, Jones County, Shackelford County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Mar 18, 2020, 5:48 PM CDT for Haskell County, Jones County, Shackelford County, Texas. It was in force for 57 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 18, 2020, 5:48 PM CDT (22:48 UTC)
Expired: Mar 18, 2020, 6:45 PM CDT
In force: 57 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Haskell County, TX, Jones County, TX, Shackelford County, TX

The radar

The Dyess AFB radar (KDYX), 54 km from the middle of the area, began a volume at 22:51 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 watch it was issued in

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

Issued	Product	Office	Lasted
Mar 18, 4:42 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 10.8 hours before the alert went out and 221 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: 54 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 823 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 187 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

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 18, 3:03 PM CDT, 2 hours 45 minutes earlier.

Area forecast discussion, Mar 18, 3:03 PM CDT, 2 hours 45 minutes before

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Hazardous weather outlook, Mar 18, 2:42 PM CDT, 3 hours 6 minutes before

Hazardous Weather Outlook
National Weather Service San Angelo TX
242 PM CDT Wed Mar 18 2020

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-191945-
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-
242 PM CDT Wed Mar 18 2020

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

.DAY ONE...This Afternoon and Tonight

Severe thunderstorms are possible this evening through early
Thursday morning. The main hazards will be large hail, damaging
winds, and a few tornadoes.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

The threat for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested Wednesday evening.

In the hours before

Local storm report, Mar 18, 5:44 PM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
544 PM CDT WED MAR 18 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0535 PM     FUNNEL CLOUD     6 ESE OPLIN             32.11N 99.46W
03/18/2020                   CALLAHAN           TX   TRAINED SPOTTER

            A TRAINED SPOTTER REPORTED MULTIPLE FUNNEL
            CLOUDS.

&&

Local storm report, Mar 18, 5:47 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
547 PM CDT WED MAR 18 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0538 PM     TSTM WND GST     4 SE ABILENE            32.42N 99.68W
03/18/2020  M62 MPH          TAYLOR             TX   ASOS

            ASOS STATION KABI ABILENE.

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 17, 7:00 PM CDT	Special Weather Statement	SJT	Throckmorton	45 min
Mar 17, 7:02 PM CDT	Areal Flood Advisory	SJT	Haskell, Throckmorton	3 hr
Mar 17, 7:10 PM CDT	Areal Flood Advisory	SJT	Fisher, Jones, Nolan	3 hr
Mar 17, 7:26 PM CDT	Special Weather Statement	SJT	Crockett	49 min
Mar 17, 7:43 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	19 min
Mar 17, 7:49 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Jones, Shackelford, Throckmorton	56 min
Mar 17, 8:38 PM CDT	Tornado Warning	SJT	Shackelford, Throckmorton	37 min
Mar 17, 9:16 PM CDT	Special Weather Statement	SJT	Shackelford	14 min
Mar 17, 10:15 PM CDT	Special Weather Statement	SJT	Irion	45 min
Mar 17, 10:54 PM CDT	Severe Thunderstorm Warning	SJT	Irion, Sterling, Tom Green	51 min
Mar 17, 11:33 PM CDT	Special Weather Statement	SJT	Taylor	42 min
Mar 18, 12:33 AM CDT	Special Weather Statement	SJT	Runnels	42 min
Mar 18, 2:44 AM CDT	Special Weather Statement	SJT	Brown	46 min
Mar 18, 5:04 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman, Runnels, Taylor	41 min
Mar 18, 5:25 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Sterling, Tom Green	28 min
Mar 18, 5:33 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Jones, Shackelford, Taylor	42 min
Mar 18, 5:38 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman	52 min
Mar 18, 6:10 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Jones, Shackelford, Throckmorton	65 min
Mar 18, 6:57 PM CDT	Areal Flood Advisory	SJT	Haskell, Jones, Shackelford, Throckmorton	108 min

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.