Alert archive / Oklahoma / Mesoscale Discussions in 2013
Mesoscale Discussion 1497
The Storm Prediction Center issued this mesoscale discussion at Jul 24, 2013, 12:26 AM CDT for 25 counties in Oklahoma; 5 counties in Texas. It was in force for 64 min.
The area
The outline as issued.
The facts
- Issued
- Jul 24, 2013, 12:26 AM CDT (05:26 UTC)
- Expired
- Jul 24, 2013, 1:30 AM CDT
- In force
- 64 min
- Issued by
- the Storm Prediction Center
All 30 counties
Atoka County, OK, Bryan County, OK, Choctaw County, OK, Coal County, OK, Creek County, OK, Haskell County, OK, Hughes County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, McCurtain County, OK, McIntosh County, OK, Muskogee County, OK, Noble County, OK, Okfuskee County, OK, Okmulgee County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Seminole County, OK, Tulsa County, OK, Wagoner County, OK, Delta County, TX, Franklin County, TX, Lamar County, TX, Red River County, TX, Titus County, TX
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, 5.4 hours before the alert went out and 144 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
- 3646 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1538 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 165 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 10.9
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 |
|---|---|---|---|---|
| Jul 23, 7:44 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Cherokee, Craig, Creek, Delaware, Garfield and 23 more | 61 min |
| Jul 23, 9:47 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Cherokee, Craig, Creek, Delaware, Garfield and 23 more | 58 min |
| Jul 24, 12:44 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Atoka, Bryan, Cherokee, Choctaw, Coal and 23 more | 5 hr |
| Jul 24, 2:32 AM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Choctaw, Coal, Hughes, Johnston and 8 more | 88 min |
| Jul 24, 4:47 AM CDT | Mesoscale Discussion | SPC | Blaine, Caddo, Canadian, Carter, Cleveland, Comanche and 17 more | 58 min |
| Jul 24, 5:27 PM CDT | Mesoscale Discussion | SPC | Armstrong, Bailey, Briscoe, Castro, Cochran, Cottle and 17 more | 2 hr |
| Jul 24, 5:57 PM CDT | Mesoscale Discussion | SPC | Angelina, Hardin, Jasper, Newton, Orange, Polk and 3 more | 3 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2013Mesoscale Discussions in Texas, 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.