Alert archive / Arkansas / Mesoscale Discussions in 2013
Mesoscale Discussion 1941
The Storm Prediction Center issued this mesoscale discussion at Oct 5, 2013, 2:15 PM CDT for 5 states. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 5, 2013, 2:15 PM CDT (19:15 UTC)
- Expired
- Oct 5, 2013, 4:45 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 41 counties
Arkansas County, AR, Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Jackson County, AR, Lee County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, St. Francis County, AR, Woodruff County, AR, Ballard County, KY, Carlisle County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Marshall County, KY, McCracken County, KY, Butler County, MO, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Stoddard County, MO, DeSoto County, MS, Tunica County, MS, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Haywood County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN
The radar
The Memphis radar (KNQA), 58 km from the middle of the area, began a volume at 19:16 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
Little Rock, AR (KBYH), launched 12:00Z, 7.3 hours before the alert went out and 102 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
- 1271 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 485 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.3
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 |
|---|---|---|---|---|
| Oct 5, 5:34 PM CDT | Mesoscale Discussion | SPC | Caldwell, Crittenden, Daviess, Hancock, Henderson, Hopkins and 5 more | 116 min |
| Oct 4, 9:30 PM CDT | Mesoscale Discussion | SPC | Barton, Bates, Buchanan, Carroll, Cass, Cedar and 12 more | 90 min |
| Oct 5, 12:29 PM CDT | Mesoscale Discussion | SPC | Cape Girardeau, Perry | 2 hr |
Nearby
Mesoscale Discussions in Arkansas, 2013Mesoscale Discussions in Tennessee, 2013Mesoscale Discussions in Kentucky, 2013Every mesoscale discussion in 2013
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.