Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 27, NWS San Angelo, TX

April 3, 2018San Saba County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 3, 2018, 10:59 AM CDT for San Saba County, Texas. It was in force for 31 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: Apr 3, 2018, 10:59 AM CDT (15:59 UTC)
Expired: Apr 3, 2018, 11:30 AM CDT
In force: 31 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

County San Saba County, TX

The radar

The Ft Hood radar (KGRK), 145 km from the middle of the area, began a volume at 16:06 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

Fort Worth, TX (KFWD), launched 12:00Z, 4.0 hours before the alert went out and 236 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: 1112 J/kg
Mixed-layer CIN: -284 J/kg
Mixed-layer LCL: 607 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 448 m²/s²
0-3 km storm-relative helicity: 477 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Apr 2, 6:13 PM CDT, 16 hours 46 minutes earlier.

Area forecast discussion, Apr 2, 6:13 PM CDT, 16 hours 46 minutes before

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Hazardous weather outlook, Apr 2, 2:19 PM CDT, 20 hours 40 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
Apr 3, 10:54 AM CDT	Special Weather Statement	SJT	San Saba	36 min
Apr 3, 4:16 PM CDT	Special Weather Statement	SJT	San Saba	29 min

Nearby

Severe Thunderstorm Warnings in Texas, 2018 Every severe thunderstorm warning in 2018

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.