Alert archive / Missouri / Mesoscale Discussions in 2015
Mesoscale Discussion 1712
The Storm Prediction Center issued this mesoscale discussion at Aug 18, 2015, 7:17 PM CDT for 4 states. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Aug 18, 2015, 7:17 PM CDT (00:17 UTC)
- Expired
- Aug 18, 2015, 8:45 PM CDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 30 counties
Benton County, AR, Carroll County, AR, Cherokee County, KS, Barry County, MO, Barton County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Greene County, MO, Hickory County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Polk County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Webster County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Delaware County, OK, Mayes County, OK, Ottawa County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK
The radar
The Springfield radar (KSGF), 56 km from the middle of the area, began a volume at 00:17 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 00:00Z, 0.3 hours before the alert went out and 18 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
- 984 J/kg
- Mixed-layer CIN
- -91 J/kg
- Mixed-layer LCL
- 1400 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 216 m²/s²
- 0-3 km storm-relative helicity
- 292 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 7.7
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 19, 12:30 PM CDT | Mesoscale Discussion | SPC | Desha, Phillips | 3 hr |
| Aug 19, 2:45 PM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Chicot, Columbia, Desha and 6 more | 3 hr |
| Aug 19, 12:07 AM CDT | Mesoscale Discussion | SPC | Crawford, Dent, Douglas, Franklin, Gasconade, Howell and 11 more | 113 min |
| Aug 18, 11:03 PM CDT | Severe Thunderstorm Watch | SPC | Beckham, Custer, Dewey, Ellis, Greer, Harmon and 4 more | 6 hr |
| Aug 19, 3:57 AM CDT | Mesoscale Discussion | SPC | Caddo, Canadian, Carter, Cherokee, Cleveland, Coal and 36 more | 63 min |
Nearby
Mesoscale Discussions in Missouri, 2015Mesoscale 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.