Alert archive / Oklahoma / Mesoscale Discussions in 2017
Mesoscale Discussion 1469
The Storm Prediction Center issued this mesoscale discussion at Aug 10, 2017, 4:33 PM CDT for 25 counties in Oklahoma. It was in force for 57 min.
The area
The outline as issued.
The facts
- Issued
- Aug 10, 2017, 4:33 PM CDT (21:33 UTC)
- Expired
- Aug 10, 2017, 5:30 PM CDT
- In force
- 57 min
- Issued by
- the Storm Prediction Center
All 25 counties
Alfalfa County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Creek County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Seminole County, OK, Washita County, OK
The radar
The Norman radar (KTLX), 43 km from the middle of the area, began a volume at 21:37 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
Norman, OK (KOUN), launched 12:00Z, 9.6 hours before the alert went out and 48 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
- 335 J/kg
- Mixed-layer CIN
- -149 J/kg
- Mixed-layer LCL
- 1030 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 |
|---|---|---|---|---|
| Aug 9, 7:36 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Grant, Kay, Major, Woods, Woodward | 84 min |
| Aug 10, 1:42 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 21 more | 2 hr |
| Aug 10, 2:06 PM CDT | Severe Thunderstorm Watch | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 33 more | 7 hr |
| Aug 10, 3:50 PM CDT | Mesoscale Discussion | SPC | Beaver, Cimarron, Texas | 115 min |
| Aug 10, 4:52 PM CDT | Severe Thunderstorm Watch | SPC | Beaver, Cimarron, Texas | 7 hr |
| Aug 10, 6:44 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Blaine, Caddo, Canadian, Cleveland, Creek and 22 more | 91 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.