Alert archive / Oklahoma / Mesoscale Discussions in 2017
Mesoscale Discussion 1226
The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2017, 8:23 PM CDT for 26 counties in Oklahoma. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Jul 3, 2017, 8:23 PM CDT (01:23 UTC)
- Expired
- Jul 3, 2017, 9:30 PM CDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 26 counties
Atoka County, OK, Bryan County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Creek County, OK, Garvin County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Lincoln County, OK, Love County, OK, Marshall County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Okfuskee County, OK, Okmulgee County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Tulsa County, OK
The radar
The Norman radar (KTLX), 57 km from the middle of the area, began a volume at 01:22 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, 1.4 hours before the alert went out and 67 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
- 2711 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1254 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 147 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 17.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 7:26 PM CDT | Mesoscale Discussion | SPC | Beckham, Caddo, Canadian, Cleveland, Comanche, Custer and 16 more | 64 min |
| Jul 3, 8:39 PM CDT | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Carter, Cherokee, Choctaw, Coal and 26 more | 6 hr |
| Jul 3, 10:30 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Cherokee, Coal, Haskell and 16 more | 60 min |
| Jul 4, 12:51 AM CDT | Mesoscale Discussion | SPC | Adair, Atoka, Bryan, Cherokee, Choctaw, Haskell and 5 more | 114 min |
Nearby
Mesoscale Discussions in Oklahoma, 2017Every mesoscale discussion in 2017
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.