Alert archive / Oklahoma / Mesoscale Discussions in 2011
Mesoscale Discussion 1926
The Storm Prediction Center issued this mesoscale discussion at Aug 9, 2011, 10:02 PM CDT for 34 counties in Oklahoma; Hardeman County, Wichita County, Wilbarger County, Texas. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Aug 9, 2011, 10:02 PM CDT (03:02 UTC)
- Expired
- Aug 9, 2011, 11:30 PM CDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
All 37 counties
Alfalfa County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Comanche County, OK, Cotton County, OK, Creek County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Jefferson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Noble County, OK, Oklahoma County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Hardeman County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Norman radar (KTLX), 99 km from the middle of the area, began a volume at 03:05 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 3.0 hours before the alert went out and 92 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
- 264 J/kg
- Mixed-layer CIN
- -200 J/kg
- Mixed-layer LCL
- 3144 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Aug 9, 8:27 PM CDT | Mesoscale Discussion | SPC | Beaver, Beckham, Ellis, Greer, Harmon, Harper and 2 more | 2 hr |
| Aug 9, 10:23 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Alfalfa, Beckham, Blaine, Caddo, Canadian and 48 more | 5 hr |
| Aug 10, 1:32 AM CDT | Mesoscale Discussion | SPC | Cherokee, Cleveland, Creek, Haskell, Hughes, Lincoln and 17 more | 58 min |
| Aug 10, 3:15 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Cherokee, Delaware, Haskell, Latimer, LeFlore and 6 more | 6 hr |
| Aug 10, 7:27 AM CDT | Mesoscale Discussion | SPC | Creek, Lincoln, McIntosh, Noble, Okfuskee, Okmulgee and 4 more | 63 min |
Nearby
Mesoscale Discussions in Oklahoma, 2011Mesoscale Discussions in Texas, 2011Every mesoscale discussion in 2011
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.