Alert archive / Texas / Mesoscale Discussions in 2008

Mesoscale Discussion 795

May 6, 20084 counties in New Mexico; 15 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 6, 2008, 12:27 PM MDT for 4 counties in New Mexico; 15 counties in Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: May 6, 2008, 12:27 PM MDT (18:27 UTC)
Expired: May 6, 2008, 3:00 PM MDT
In force: 3 hr
Issued by: the Storm Prediction Center

Counties Curry County, NM, Eddy County, NM, Lea County, NM, Roosevelt County, NM, Andrews County, TX, Cochran County, TX, Crane County, TX, Ector County, TX, Gaines County, TX, Loving County, TX, Martin County, TX, Midland County, TX, Pecos County, TX, Reagan County, TX, Reeves County, TX, Upton County, TX, Ward County, TX, Winkler County, TX, Yoakum County, TX

The radar

The Midland/Odessa radar (KMAF), 126 km from the middle of the area, began a volume at 18:26 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Tornado Watch 267May 6, 2:30 PM MDT

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 6.5 hours before the alert went out and 125 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: 1418 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 655 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 221 m²/s²
0-3 km storm-relative helicity: 324 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 9.8

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
May 5, 6:59 PM MDT	Mesoscale Discussion	SPC	Chaves, Curry, De Baca, Quay, Roosevelt	61 min
May 5, 7:32 PM MDT	Severe Thunderstorm Watch	SPC	Eddy, Lea, Roosevelt	5 hr
May 5, 9:56 PM MDT	Mesoscale Discussion	SPC	Eddy, Lea, Roosevelt	64 min
May 6, 2:26 PM MDT	Tornado Watch	SPC	Curry, Lea, Roosevelt	7 hr
May 6, 5:01 PM MDT	Mesoscale Discussion	SPC	Lea	89 min
May 6, 5:19 PM MDT	Tornado Watch	SPC	Armstrong, Borden, Briscoe, Carson, Childress, Coke and 45 more	4 hr

Nearby

Mesoscale Discussions in Texas, 2008 Mesoscale Discussions in New Mexico, 2008 Every mesoscale discussion 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.