Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 1940

August 10, 200411 counties in Kansas; 7 counties in Oklahoma; 15 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Aug 10, 2004, 3:08 AM CDT for 11 counties in Kansas; 7 counties in Oklahoma; 15 counties in Texas. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Aug 10, 2004, 3:08 AM CDT (08:08 UTC)
Expired: Aug 10, 2004, 4:45 AM CDT
In force: 97 min
Issued by: the Storm Prediction Center

All 33 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Ford County, KS, Gray County, KS, Hodgeman County, KS, Kiowa County, KS, Meade County, KS, Pawnee County, KS, Pratt County, KS, Alfalfa County, OK, Beaver County, OK, Ellis County, OK, Harper County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK, Armstrong County, TX, Carson County, TX, Dallam County, TX, Donley County, TX, Gray County, TX, Hansford County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Potter County, TX, Roberts County, TX, Sherman County, TX, Wheeler County, TX

The radar

The Dodge City radar (KDDC), 150 km from the middle of the area, began a volume at 08:08 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

Dodge City, (KDDC), launched 00:00Z, 8.1 hours before the alert went out and 153 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: 954 J/kg
Mixed-layer CIN: -197 J/kg
Mixed-layer LCL: 1423 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 188 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

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
Aug 9, 7:51 PM CDT	Mesoscale Discussion	SPC	Finney, Gove, Grant, Gray, Greeley, Hamilton and 15 more	54 min
Aug 9, 8:30 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Clark, Decatur, Finney, Ford, Gove and 25 more	6 hr
Aug 9, 10:29 PM CDT	Mesoscale Discussion	SPC	Finney, Greeley, Hamilton, Kearny, Logan, Scott and 4 more	61 min
Aug 10, 1:00 AM CDT	Severe Thunderstorm Watch	SPC	Barber, Clark, Comanche, Edwards, Ford, Gray and 7 more	5 hr
Aug 10, 1:37 PM CDT	Mesoscale Discussion	SPC	Decatur, Graham, Jewell, Mitchell, Norton, Osborne and 5 more	113 min
Aug 10, 5:47 PM CDT	Mesoscale Discussion	SPC	Finney, Gove, Grant, Gray, Greeley, Hamilton and 12 more	58 min
Aug 10, 5:55 PM CDT	Severe Thunderstorm Watch	SPC	Clark, Finney, Ford, Grant, Gray, Greeley and 13 more	6 hr

Nearby

Mesoscale Discussions in Texas, 2004 Mesoscale Discussions in Kansas, 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.