Alert archive / Arkansas / Mesoscale Discussions in 2014
Mesoscale Discussion 1817
The Storm Prediction Center issued this mesoscale discussion at Oct 6, 2014, 5:20 PM CDT for 33 counties in Arkansas; DeSoto County, Tate County, Tunica County, Mississippi; 7 counties in Tennessee. It was in force for 115 min.
The area
The outline as issued.
The facts
- Issued
- Oct 6, 2014, 5:20 PM CDT (22:20 UTC)
- Expired
- Oct 6, 2014, 7:15 PM CDT
- In force
- 115 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 43 counties
Arkansas County, AR, Clark County, AR, Cleburne County, AR, Cleveland County, AR, Conway County, AR, Crittenden County, AR, Cross County, AR, Dallas County, AR, Faulkner County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Jackson County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Logan County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Montgomery County, AR, Perry County, AR, Phillips County, AR, Poinsett County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, St. Francis County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, DeSoto County, MS, Tate County, MS, Tunica County, MS, Crockett County, TN, Fayette County, TN, Hardeman County, TN, Haywood County, TN, Lauderdale County, TN, Shelby County, TN, Tipton County, TN
The radar
The Little Rock radar (KLZK), 55 km from the middle of the area, began a volume at 22:22 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 nearest sounding before it
Little Rock, AR (KBYH), launched 12:00Z, 10.3 hours before the alert went out and 163 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1442 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 210 m²/s²
- 0-3 km storm-relative helicity
- 260 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 |
|---|---|---|---|---|
| Oct 5, 10:15 PM CDT | Mesoscale Discussion | SPC | Conway, Crawford, Franklin, Garland, Johnson, Logan and 9 more | 2 hr |
| Oct 6, 9:31 AM CDT | Mesoscale Discussion | SPC | Adams, Amite, Franklin, Jefferson, Pike, Wilkinson | 119 min |
| Oct 6, 3:28 PM CDT | Mesoscale Discussion | SPC | Chickasaw, Clay, Itawamba, Lee, Lowndes, Monroe and 3 more | 62 min |
| Oct 6, 6:36 PM CDT | Mesoscale Discussion | SPC | Alcorn, Itawamba, Lee, Prentiss, Tishomingo | 84 min |
| Oct 6, 2:49 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Cheatham, Chester, Clay, Crockett and 35 more | 56 min |
Nearby
Mesoscale Discussions in Arkansas, 2014Mesoscale Discussions in Tennessee, 2014Mesoscale Discussions in Mississippi, 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.