Alert archive / Texas / Mesoscale Discussions in 2007

Mesoscale Discussion 2023

September 26, 200724 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Sep 26, 2007, 4:03 PM CDT for 24 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Sep 26, 2007, 4:03 PM CDT (21:03 UTC)
Expired: Sep 26, 2007, 6:30 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 24 counties

Armstrong County, TX, Bailey County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Cochran County, TX, Deaf Smith County, TX, Gray County, TX, Hale County, TX, Hansford County, TX, Hockley County, TX, Hutchinson County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Swisher County, TX

The radar

The Amarillo radar (KAMA), 30 km from the middle of the area, began a volume at 21:02 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

Amarillo Airport, TX (KAMA), launched 12:00Z, 9.1 hours before the alert went out and 30 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: 4 J/kg
Mixed-layer CIN: -208 J/kg
Mixed-layer LCL: 1128 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 138 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 26, 1:44 PM CDT	Mesoscale Discussion	SPC	Andrews, Crane, Culberson, Ector, Gaines, Hudspeth and 8 more	2 hr

Nearby

Mesoscale Discussions in Texas, 2007 Every mesoscale discussion in 2007

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.