Alert archive / Oklahoma / Mesoscale Discussions in 2015
Mesoscale Discussion 1779
The Storm Prediction Center issued this mesoscale discussion at Sep 8, 2015, 1:48 PM CDT for 7 counties in Arkansas; Barry County, McDonald County, Newton County, Missouri; 14 counties in Oklahoma. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 8, 2015, 1:48 PM CDT (18:48 UTC)
- Expired
- Sep 8, 2015, 4:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 5%
All 24 counties
Benton County, AR, Boone County, AR, Carroll County, AR, Madison County, AR, Newton County, AR, Searcy County, AR, Washington County, AR, Barry County, MO, McDonald County, MO, Newton County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Mayes County, OK, Muskogee County, OK, Nowata County, OK, Okmulgee County, OK, Ottawa County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 57 km from the middle of the area, began a volume at 18:49 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
Springfield, MO (KSGF), launched 12:00Z, 6.8 hours before the alert went out and 125 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
- 763 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 1220 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
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 |
|---|---|---|---|---|
| Sep 7, 8:38 PM CDT | Mesoscale Discussion | SPC | Atchison | 67 min |
| Sep 8, 9:52 AM CDT | Mesoscale Discussion | SPC | Lewis, Marion | 113 min |
| Sep 8, 3:24 PM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 22 more | 3 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2015Mesoscale Discussions in Arkansas, 2015Mesoscale Discussions in Missouri, 2015Every mesoscale discussion in 2015
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.