Alert archive / Oklahoma / Mesoscale Discussions in 2015
Mesoscale Discussion 1287
The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2015, 6:46 PM CDT for 4 counties in Arkansas; 39 counties in Oklahoma. It was in force for 89 min.
The area
The outline as issued.
The facts
- Issued
- Jul 2, 2015, 6:46 PM CDT (23:46 UTC)
- Expired
- Jul 2, 2015, 8:15 PM CDT
- In force
- 89 min
- Issued by
- the Storm Prediction Center
All 43 counties
Benton County, AR, Crawford County, AR, Sebastian County, AR, Washington County, AR, Adair County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cherokee County, OK, Cleveland County, OK, Creek County, OK, Custer County, OK, Delaware County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grady County, OK, Haskell County, OK, Hughes County, OK, Kingfisher County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Muskogee County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Woodward County, OK
The radar
The Norman radar (KTLX), 76 km from the middle of the area, began a volume at 23:47 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, 11.8 hours before the alert went out and 92 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
- 297 J/kg
- Mixed-layer CIN
- -276 J/kg
- Mixed-layer LCL
- 1240 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 198 m²/s²
- 0-3 km storm-relative helicity
- 308 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 2, 11:59 AM CDT | Mesoscale Discussion | SPC | Mississippi | 2 hr |
| Jul 2, 2:37 PM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 18 more | 2 hr |
| Jul 2, 3:21 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 6 hr |
| Jul 2, 5:50 PM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Greene, Mississippi | 115 min |
| Jul 2, 6:04 PM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Fulton, Independence, Izard, Marion and 4 more | 56 min |
Nearby
Mesoscale Discussions in Oklahoma, 2015Mesoscale Discussions in Arkansas, 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.