Alert archive / Oklahoma / Mesoscale Discussions in 2017
Mesoscale Discussion 1222
The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2017, 2:53 PM CDT for 26 counties in Oklahoma; 4 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 3, 2017, 2:53 PM CDT (19:53 UTC)
- Expired
- Jul 3, 2017, 5:00 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 95%
All 30 counties
Alfalfa County, OK, Beaver County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grady County, OK, Greer County, OK, Harper County, OK, Jackson County, OK, Kingfisher County, OK, Kiowa County, OK, Logan County, OK, Major County, OK, McClain County, OK, Oklahoma County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Hemphill County, TX, Lipscomb County, TX, Ochiltree County, TX, Wheeler County, TX
The radar
The Vance AFB radar (KVNX), 135 km from the middle of the area, began a volume at 19:53 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
Dodge City, (KDDC), launched 12:00Z, 7.9 hours before the alert went out and 218 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1633 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- -84 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
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, 3:01 AM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Choctaw, Coal, McCurtain, Pushmataha | 2 hr |
| Jul 3, 3:24 PM CDT | Severe Thunderstorm Watch | SPC | Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian and 27 more | 9 hr |
| Jul 3, 5:02 PM CDT | Mesoscale Discussion | SPC | Harmon | 88 min |
| Jul 3, 5:37 PM CDT | Severe Thunderstorm Watch | SPC | Cotton, Harmon, Jackson, Jefferson, Tillman | 7 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2017Mesoscale Discussions in Texas, 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.