Alert archive / Texas / Mesoscale Discussions in 2013
Mesoscale Discussion 255
The Storm Prediction Center issued this mesoscale discussion at Mar 8, 2013, 11:33 PM CST for 8 counties in Oklahoma; 33 counties in Texas. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Mar 8, 2013, 11:33 PM CST (05:33 UTC)
- Expired
- Mar 9, 2013, 1:00 AM CST
- In force
- 87 min
- Issued by
- the Storm Prediction Center
All 41 counties
Beaver County, OK, Beckham County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Roger Mills County, OK, Woodward County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hansford County, TX, Hardeman County, TX, Hemphill County, TX, Hockley County, TX, Hutchinson County, TX, Kent County, TX, King County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Ochiltree County, TX, Randall County, TX, Roberts County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX
The radar
The Amarillo radar (KAMA), 89 km from the middle of the area, began a volume at 05:36 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 00:00Z, 5.6 hours before the alert went out and 314 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
- 109 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 2099 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 |
|---|---|---|---|---|
| Mar 8, 7:24 PM CST | Mesoscale Discussion | SPC | Beaver, Beckham, Ellis, Harmon, Harper, Roger Mills and 1 more | 96 min |
| Mar 8, 8:09 PM CST | Severe Thunderstorm Watch | SPC | Beaver, Beckham, Ellis, Greer, Harmon, Harper and 3 more | 7 hr |
| Mar 9, 2:39 AM CST | Mesoscale Discussion | SPC | Beaver, Beckham, Dewey, Ellis, Greer, Harmon and 5 more | 66 min |
| Mar 9, 12:39 PM CST | Mesoscale Discussion | SPC | Carter, Comanche, Cotton, Garvin, Grady, Jefferson and 2 more | 2 hr |
| Mar 9, 1:46 PM CST | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Carter, Coal, Garvin, Jefferson and 6 more | 9 hr |
| Mar 9, 3:34 PM CST | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Coal, Garvin, Hughes and 6 more | 86 min |
| Mar 9, 5:41 PM CST | Mesoscale Discussion | SPC | Atoka, Bryan, Coal, Haskell, Hughes, Johnston and 6 more | 94 min |
Nearby
Mesoscale Discussions in Texas, 2013Mesoscale Discussions in Oklahoma, 2013Every mesoscale discussion in 2013
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.