Alert archive / Texas / Mesoscale Discussions in 2005

Mesoscale Discussion 1643

July 4, 20056 counties in New Mexico; 34 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jul 4, 2005, 2:03 PM MDT for 6 counties in New Mexico; 34 counties in Texas. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Jul 4, 2005, 2:03 PM MDT (20:03 UTC)
Expired: Jul 4, 2005, 4:00 PM MDT
In force: 117 min
Issued by: the Storm Prediction Center

All 40 counties

Colfax County, NM, Curry County, NM, Harding County, NM, Quay County, NM, Roosevelt County, NM, Union County, NM, Bailey County, TX, Borden County, TX, Callahan County, TX, Castro County, TX, Cochran County, TX, Coke County, TX, Coleman County, TX, Crosby County, TX, Dawson County, TX, Deaf Smith County, TX, Dickens County, TX, Fisher County, TX, Floyd County, TX, Garza County, TX, Hale County, TX, Haskell County, TX, Hockley County, TX, Jones County, TX, Kent County, TX, King County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Parmer County, TX, Runnels County, TX, Scurry County, TX, Stonewall County, TX, Swisher County, TX, Taylor County, TX, Terry County, TX, Tom Green County, TX

The radar

The Lubbock radar (KLBB), 25 km from the middle of the area, began a volume at 20:05 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.

Severe Thunderstorm Watch 600Jul 4, 2:35 PM MDT

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 8.1 hours before the alert went out and 157 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: 371 J/kg
Mixed-layer CIN: -580 J/kg
Mixed-layer LCL: 1665 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: -118 m²/s²
0-3 km storm-relative helicity: -59 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
Jul 4, 2:35 PM MDT	Severe Thunderstorm Watch	SPC	Harding, Union	6 hr
Jul 4, 4:21 PM MDT	Mesoscale Discussion	SPC	Curry, Harding, Quay, Union	84 min
Jul 3, 6:20 PM MDT	Mesoscale Discussion	SPC	Gray, Hansford, Hemphill, Hutchinson, Lipscomb, Ochiltree and 2 more	115 min
Jul 3, 7:25 PM MDT	Severe Thunderstorm Watch	SPC	Gray, Hemphill, Lipscomb, Ochiltree, Roberts, Wheeler	8 hr
Jul 4, 12:40 AM MDT	Mesoscale Discussion	SPC	Archer, Baylor, Bowie, Childress, Clay, Collin and 24 more	35 min
Jul 4, 2:28 AM MDT	Mesoscale Discussion	SPC	Hemphill, Lipscomb, Wheeler	32 min
Jul 4, 10:35 AM MDT	Mesoscale Discussion	SPC	Anderson, Camp, Cass, Cherokee, Freestone, Gregg and 12 more	85 min
Jul 4, 5:49 PM MDT	Mesoscale Discussion	SPC	Archer, Baylor, Clay, Collin, Cooke, Delta and 21 more	116 min

Nearby

Mesoscale Discussions in Texas, 2005 Mesoscale Discussions in New Mexico, 2005 Every mesoscale discussion in 2005

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.