Alert archive / Texas / Mesoscale Discussions in 2013

Mesoscale Discussion 211

February 24, 20134 states

The Storm Prediction Center issued this mesoscale discussion at Feb 24, 2013, 7:20 PM CST for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Feb 24, 2013, 7:20 PM CST (01:20 UTC)
Expired: Feb 25, 2013, 1:15 AM CST
In force: 6 hr
Issued by: the Storm Prediction Center

All 25 counties

Meade County, KS, Seward County, KS, Harding County, NM, Mora County, NM, Quay County, NM, San Miguel County, NM, Beaver County, OK, Texas County, OK, Armstrong County, TX, Carson County, TX, Dallam County, TX, Deaf Smith County, TX, Gray County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 138 km from the middle of the area, began a volume at 01:18 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 00:00Z, 1.3 hours before the alert went out and 139 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 846 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 348 m²/s²
0-3 km storm-relative helicity: 493 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
Feb 25, 3:39 AM CST	Mesoscale Discussion	SPC	Comanche	5 hr
Feb 25, 10:54 AM CST	Mesoscale Discussion	SPC	Barber, Clark, Comanche, Cowley, Harper, Kingman and 6 more	6 hr
Feb 24, 7:52 PM CST	Mesoscale Discussion	SPC	Beckham, Greer, Harmon, Jackson, Kiowa, Tillman and 1 more	113 min
Feb 24, 10:25 PM CST	Mesoscale Discussion	SPC	Archer, Baylor, Brown, Callahan, Coke, Coleman and 29 more	2 hr
Feb 24, 10:36 PM CST	Severe Thunderstorm Watch	SPC	Archer, Baylor, Brown, Callahan, Clay, Coke and 27 more	5 hr
Feb 25, 2:01 AM CST	Mesoscale Discussion	SPC	Archer, Baylor, Brown, Callahan, Clay, Coleman and 19 more	119 min
Feb 25, 9:25 AM CST	Mesoscale Discussion	SPC	Hardin, Harrison, Jasper, Jefferson, Newton, Orange and 5 more	65 min
Feb 25, 12:26 PM CST	Tornado Watch	SPC	Jasper, Newton, Orange, Sabine, San Augustine, Shelby	10 hr

Nearby

Mesoscale Discussions in Texas, 2013 Mesoscale Discussions in New Mexico, 2013 Mesoscale Discussions in Kansas, 2013 Every mesoscale discussion in 2013

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.