Alert archive / Texas / Mesoscale Discussions in 2004
Mesoscale Discussion 661
The Storm Prediction Center issued this mesoscale discussion at May 11, 2004, 7:19 PM CDT for Beaver County, Texas County, Oklahoma; 41 counties in Texas. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- May 11, 2004, 7:19 PM CDT (00:19 UTC)
- Expired
- May 11, 2004, 9:15 PM CDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
All 43 counties
Beaver County, OK, Texas County, OK, Armstrong County, TX, Bailey County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Cochran County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Deaf Smith County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hansford County, TX, Hemphill County, TX, Hockley County, TX, Hutchinson County, TX, Kent County, TX, King County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Moore County, TX, Motley County, TX, Ochiltree County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX, Yoakum County, TX
The radar
The Amarillo radar (KAMA), 57 km from the middle of the area, began a volume at 00:19 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, 0.3 hours before the alert went out and 57 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.
- Mixed-layer CAPE
- 1320 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 1878 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 297 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 5.2
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 9:18 PM CDT | Mesoscale Discussion | SPC | Cimarron, Texas | 57 min |
| May 12, 3:23 PM CDT | Mesoscale Discussion | SPC | Harper | 2 hr |
| May 12, 4:00 PM CDT | Tornado Watch | SPC | Alfalfa, Ellis, Grant, Harper, Kay, Major and 2 more | 6 hr |
| May 12, 4:41 PM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Caddo, Comanche, Custer, Dewey and 8 more | 94 min |
| May 12, 5:10 PM CDT | Severe Thunderstorm Watch | SPC | Beckham, Blaine, Caddo, Canadian, Comanche, Cotton and 10 more | 5 hr |
Nearby
Mesoscale Discussions in Texas, 2004Mesoscale Discussions in Oklahoma, 2004Every 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.