Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 619

May 9, 20044 states

The Storm Prediction Center issued this mesoscale discussion at May 9, 2004, 3:07 PM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 9, 2004, 3:07 PM CDT (20:07 UTC)
Expired: May 9, 2004, 5:30 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 29 counties

Morton County, KS, Stevens County, KS, Chaves County, NM, Curry County, NM, Eddy County, NM, Lea County, NM, Roosevelt County, NM, Texas County, OK, Bailey County, TX, Castro County, TX, Cochran County, TX, Crane County, TX, Dallam County, TX, Deaf Smith County, TX, Hansford County, TX, Hartley County, TX, Hutchinson County, TX, Loving County, TX, Moore County, TX, Oldham County, TX, Parmer County, TX, Pecos County, TX, Potter County, TX, Randall County, TX, Reeves County, TX, Sherman County, TX, Terrell County, TX, Ward County, TX, Winkler County, TX

The radar

The Lubbock radar (KLBB), 109 km from the middle of the area, began a volume at 20:09 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

Midland Regional, TX (KMAF), launched 12:00Z, 8.1 hours before the alert went out and 158 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: 561 J/kg
Mixed-layer CIN: -334 J/kg
Mixed-layer LCL: 701 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 283 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
May 8, 8:25 PM CDT	Severe Thunderstorm Watch	SPC	Brown, Clay, Cloud, Ellis, Jewell, Lincoln and 10 more	6 hr
May 8, 10:44 PM CDT	Mesoscale Discussion	SPC	Brown, Cloud, Jewell, Marshall, Mitchell, Nemaha and 5 more	2 hr
May 9, 1:22 AM CDT	Mesoscale Discussion	SPC	Atchison, Barton, Brown, Clay, Cloud, Dickinson and 27 more	23 min
May 9, 2:42 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Greeley, Logan, Rawlins, Sherman and 3 more	3 hr
May 9, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	Decatur, Gove, Graham, Logan, Norton, Phillips and 7 more	6 hr

Nearby

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