Alert archive / Oklahoma / Mesoscale Discussions in 2014
Mesoscale Discussion 1657
The Storm Prediction Center issued this mesoscale discussion at Sep 1, 2014, 2:16 PM CDT for 12 counties in Kansas; 13 counties in Oklahoma. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 1, 2014, 2:16 PM CDT (19:16 UTC)
- Expired
- Sep 1, 2014, 4:45 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 25 counties
Barber County, KS, Chautauqua County, KS, Cherokee County, KS, Cowley County, KS, Elk County, KS, Harper County, KS, Kingman County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Sumner County, KS, Wilson County, KS, Alfalfa County, OK, Craig County, OK, Garfield County, OK, Grant County, OK, Kay County, OK, Mayes County, OK, Noble County, OK, Nowata County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Rogers County, OK, Washington County, OK
The radar
The Wichita radar (KICT), 105 km from the middle of the area, began a volume at 19:22 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 12:00Z, 7.3 hours before the alert went out and 193 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
- 1419 J/kg
- Mixed-layer CIN
- -353 J/kg
- Mixed-layer LCL
- 940 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 367 m²/s²
- 0-3 km storm-relative helicity
- 377 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Aug 31, 8:14 PM CDT | Severe Thunderstorm Watch | SPC | Atchison, Doniphan, Johnson, Leavenworth, Linn, Miami and 1 more | 8 hr |
| Aug 31, 9:39 PM CDT | Mesoscale Discussion | SPC | Anderson, Atchison, Barton, Chase, Coffey, Dickinson and 32 more | 96 min |
| Sep 1, 12:02 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Barton, Butler, Chase, Coffey and 22 more | 88 min |
| Sep 1, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Butler, Chautauqua, Cowley, Elk, Greenwood and 8 more | 7 hr |
| Sep 1, 5:57 PM CDT | Severe Thunderstorm Watch | SPC | Bourbon, Cherokee, Crawford, Linn, Miami | 8 hr |
| Sep 1, 6:46 PM CDT | Mesoscale Discussion | SPC | Chautauqua, Cherokee, Cowley, Crawford, Elk, Harper and 6 more | 89 min |
Nearby
Mesoscale Discussions in Oklahoma, 2014Mesoscale Discussions in Kansas, 2014Every mesoscale discussion in 2014
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.