Alert archive / Texas / Special Weather Statements in 2011

Special Weather Statement, NWS San Angelo, TX

September 19, 2011Sutton County, Texas

NWS San Angelo, TX issued this special weather statement at Sep 19, 2011, 3:37 AM CDT for Sutton County, Texas. It was in force for 53 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: Sep 19, 2011, 3:37 AM CDT (08:37 UTC)
Expired: Sep 19, 2011, 4:30 AM CDT
In force: 53 min
Issued by: NWS San Angelo, TX

County Sutton County, TX

The radar

The San Angelo radar (KSJT), 99 km from the middle of the area, began a volume at 08:41 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, 8.6 hours before the alert went out and 403 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: 2236 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1912 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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
Sep 18, 7:05 PM CDT	Special Weather Statement	SJT	Brown	10 min
Sep 18, 7:25 PM CDT	Special Weather Statement	SJT	Brown	35 min
Sep 18, 7:46 PM CDT	Special Weather Statement	SJT	San Saba	29 min
Sep 18, 8:16 PM CDT	Special Weather Statement	SJT	San Saba	29 min
Sep 18, 8:58 PM CDT	Special Weather Statement	SJT	Brown	32 min
Sep 18, 10:12 PM CDT	Special Weather Statement	SJT	San Saba	33 min
Sep 19, 4:36 AM CDT	Special Weather Statement	SJT	Sutton	39 min

Nearby

Special Weather Statements in Texas, 2011 Every special weather statement in 2011

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.