Alert archive / Arkansas / Mesoscale Discussions in 2015
Mesoscale Discussion 1323
The Storm Prediction Center issued this mesoscale discussion at Jul 8, 2015, 1:58 PM CDT for 21 counties in Arkansas; 9 counties in Missouri; LeFlore County, Oklahoma. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- Jul 8, 2015, 1:58 PM CDT (18:58 UTC)
- Expired
- Jul 8, 2015, 3:30 PM CDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 31 counties
Baxter County, AR, Boone County, AR, Carroll County, AR, Conway County, AR, Crawford County, AR, Franklin County, AR, Fulton County, AR, Izard County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Polk County, AR, Pope County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Stone County, AR, Van Buren County, AR, Yell County, AR, Christian County, MO, Douglas County, MO, Greene County, MO, Howell County, MO, Ozark County, MO, Stone County, MO, Taney County, MO, Webster County, MO, Wright County, MO, LeFlore County, OK
The radar
The Western Arkansas radar (KSRX), 120 km from the middle of the area, began a volume at 18:59 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, 7.0 hours before the alert went out and 124 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
- 461 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 182 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
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 8, 2:29 AM CDT | Mesoscale Discussion | SPC | Crawford, Washington | 3 hr |
| Jul 8, 1:09 PM CDT | Mesoscale Discussion | SPC | Bollinger, Cape Girardeau, Carter, Crawford, Dent, Douglas and 16 more | 2 hr |
| Jul 8, 3:52 PM CDT | Mesoscale Discussion | SPC | Bollinger, Cape Girardeau, Crawford, Dent, Iron, Jefferson and 11 more | 113 min |
| Jul 8, 6:05 PM CDT | Tornado Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Iron, Jefferson and 10 more | 7 hr |
| Jul 8, 3:15 PM CDT | Mesoscale Discussion | SPC | Cimarron | 60 min |
| Jul 8, 5:09 PM CDT | Severe Thunderstorm Watch | SPC | Cimarron, Texas | 7 hr |
Nearby
Mesoscale Discussions in Arkansas, 2015Mesoscale Discussions in Missouri, 2015Mesoscale Discussions in Oklahoma, 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.