Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 211, NWS San Angelo, TX

May 27, 20084 counties in Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 27, 2008, 9:43 PM CDT for 4 counties in Texas. It was in force for 47 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: May 27, 2008, 9:43 PM CDT (02:43 UTC)
Expired: May 27, 2008, 10:30 PM CDT
In force: 47 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon

Counties Fisher County, TX, Jones County, TX, Nolan County, TX, Taylor County, TX

The radar

The Dyess AFB radar (KDYX), 83 km from the middle of the area, began a volume at 02:43 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
May 27, 2:34 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 27, 9:39 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 2.7 hours before the alert went out and 204 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: 2067 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 1841 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 231 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 8.6

Open this sounding in Storm Lab

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 9:02 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Jones	43 min
May 27, 10:04 PM CDT	Areal Flood Advisory	SJT	Nolan	56 min
May 27, 10:08 PM CDT	Areal Flood Advisory	SJT	Jones, Taylor	3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2008 Every severe thunderstorm warning in 2008

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.