Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 2282

September 30, 20045 counties in Oklahoma; 24 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Sep 30, 2004, 4:52 PM CDT for 5 counties in Oklahoma; 24 counties in Texas. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued: Sep 30, 2004, 4:52 PM CDT (21:52 UTC)
Expired: Sep 30, 2004, 6:15 PM CDT
In force: 83 min
Issued by: the Storm Prediction Center

All 29 counties

Beckham County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Roger Mills County, OK, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Dickens County, TX, Donley County, TX, Fisher County, TX, Foard County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Scurry County, TX, Shackelford County, TX, Stonewall County, TX, Taylor County, TX, Wheeler County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 132 km from the middle of the area, began a volume at 21:51 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, 9.9 hours before the alert went out and 152 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: 19 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 1054 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 85 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 30, 1:23 PM CDT	Mesoscale Discussion	SPC	Bailey, Castro, Cochran, Culberson, Deaf Smith, Lamb and 4 more	2 hr
Sep 30, 1:55 PM CDT	Severe Thunderstorm Watch	SPC	Andrews, Armstrong, Bailey, Borden, Carson, Castro and 21 more	6 hr
Sep 30, 5:56 PM CDT	Mesoscale Discussion	SPC	Jeff Davis, Loving, Pecos, Reeves, Ward, Winkler	94 min

Nearby

Mesoscale Discussions in Texas, 2004 Mesoscale Discussions in Oklahoma, 2004 Every mesoscale discussion in 2004

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.