Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS San Angelo, TX

April 28, 2021Coleman County, Texas

NWS San Angelo, TX issued this special weather statement at Apr 28, 2021, 9:17 PM CDT for Coleman County, Texas. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 28, 2021, 9:17 PM CDT (02:17 UTC)
Expired: Apr 28, 2021, 10:00 PM CDT
In force: 43 min
Issued by: NWS San Angelo, TX

County Coleman County, TX

The radar

The Dyess AFB radar (KDYX), 73 km from the middle of the area, began a volume at 02:21 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 00:00Z, 2.3 hours before the alert went out and 209 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: 1526 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 1058 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 191 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 9.4

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Apr 28, 2:27 PM CDT, 6 hours 50 minutes earlier.

Area forecast discussion, Apr 28, 2:27 PM CDT, 6 hours 50 minutes before

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Hazardous weather outlook, Apr 28, 2:33 PM CDT, 6 hours 44 minutes before

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In the hours before

Local storm report, Apr 28, 3:59 PM CDT, 5 hours 18 minutes before

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Special weather statement, Apr 28, 4:24 PM CDT, 4 hours 53 minutes before

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Special weather statement, Apr 28, 6:10 PM CDT, 3 hours 7 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 28, 7:34 PM CDT	Special Weather Statement	SJT	Schleicher	41 min
Apr 28, 7:35 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	55 min
Apr 28, 8:22 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Throckmorton	53 min
Apr 28, 9:03 PM CDT	Special Weather Statement	SJT	Concho	42 min
Apr 28, 9:12 PM CDT	Severe Thunderstorm Warning	SJT	Coleman, Concho, McCulloch	48 min
Apr 28, 9:34 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman	56 min
Apr 28, 9:43 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman, McCulloch, San Saba	45 min
Apr 29, 12:03 AM CDT	Special Weather Statement	SJT	McCulloch	42 min

Nearby

Special Weather Statements in Texas, 2021 Every special weather statement in 2021

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.