Alert archive / Arkansas / Mesoscale Discussions in 2015
Mesoscale Discussion 149
The Storm Prediction Center issued this mesoscale discussion at Mar 26, 2015, 2:17 AM CDT for 14 counties in Arkansas; McCurtain County, Oklahoma; 7 counties in Texas. It was in force for 58 min.
The area
The outline as issued.
The facts
- Issued
- Mar 26, 2015, 2:17 AM CDT (07:17 UTC)
- Expired
- Mar 26, 2015, 3:15 AM CDT
- In force
- 58 min
- Issued by
- the Storm Prediction Center
All 22 counties
Clark County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Little River County, AR, Montgomery County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pulaski County, AR, Saline County, AR, Sevier County, AR, McCurtain County, OK, Bowie County, TX, Delta County, TX, Franklin County, TX, Hopkins County, TX, Lamar County, TX, Red River County, TX, Titus County, TX
The radar
The Western Arkansas radar (KSRX), 137 km from the middle of the area, began a volume at 07:16 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
Shreveport, LA (KBAD), launched 00:00Z, 7.3 hours before the alert went out and 181 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
- 77 J/kg
- Mixed-layer CIN
- -283 J/kg
- Mixed-layer LCL
- 1921 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 124 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 |
|---|---|---|---|---|
| Mar 25, 7:02 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Craighead, Greene, Lawrence, Mississippi, Randolph | 7 hr |
| Mar 25, 7:54 PM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 19 more | 66 min |
| Mar 25, 9:21 PM CDT | Severe Thunderstorm Watch | SPC | Baxter, Boone, Cleburne, Conway, Crawford, Faulkner and 33 more | 8 hr |
| Mar 25, 9:23 PM CDT | Mesoscale Discussion | SPC | Clay, Greene | 97 min |
| Mar 25, 11:39 PM CDT | Mesoscale Discussion | SPC | Cleburne, Conway, Faulkner, Franklin, Garland, Independence and 17 more | 96 min |
| Mar 26, 1:35 AM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Greene | 25 min |
| Mar 26, 12:30 PM CDT | Mesoscale Discussion | SPC | Cameron, Hidalgo, Willacy | 2 hr |
Nearby
Mesoscale Discussions in Arkansas, 2015Mesoscale Discussions in Texas, 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.