Alert archive / Arkansas / Mesoscale Discussions in 2014
Mesoscale Discussion 974
The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2014, 3:22 PM CDT for 4 states. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Jun 12, 2014, 3:22 PM CDT (20:22 UTC)
- Expired
- Jun 12, 2014, 4:45 PM CDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 37 counties
Clay County, AR, Cleburne County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Lawrence County, AR, Lee County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Randolph County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, White County, AR, Woodruff County, AR, Dunklin County, MO, Pemiscot County, MO, DeSoto County, MS, Marshall County, MS, Tate County, MS, Tunica County, MS, Crockett County, TN, Dyer County, TN, Fayette County, TN, Haywood County, TN, Lake County, TN, Lauderdale County, TN, Shelby County, TN, Tipton County, TN
The radar
The Memphis radar (KNQA), 97 km from the middle of the area, began a volume at 20:21 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, 8.4 hours before the alert went out and 116 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
- -225 J/kg
- Mixed-layer LCL
- 1279 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 78 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 |
|---|---|---|---|---|
| Jun 12, 11:47 AM CDT | Mesoscale Discussion | SPC | Baxter, Clay, Fulton, Randolph | 88 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.