Alert archive / Arkansas / Mesoscale Discussions in 2007
Mesoscale Discussion 264
The Storm Prediction Center issued this mesoscale discussion at Mar 9, 2007, 8:59 PM CST for 5 states. It was in force for 61 min.
The area
The outline as issued.
The facts
- Issued
- Mar 9, 2007, 8:59 PM CST (02:59 UTC)
- Expired
- Mar 9, 2007, 10:00 PM CST
- In force
- 61 min
- Issued by
- the Storm Prediction Center
All 36 counties
Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Hempstead County, AR, Howard County, AR, Johnson County, AR, Little River County, AR, Logan County, AR, Madison County, AR, Miller County, AR, Montgomery County, AR, Pike County, AR, Polk County, AR, Scott County, AR, Sevier County, AR, Washington County, AR, Yell County, AR, Cherokee County, KS, Barry County, MO, Barton County, MO, Dade County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Adair County, OK, Delaware County, OK, McCurtain County, OK, Ottawa County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Morris County, TX, Titus County, TX, Upshur County, TX
The radar
The Western Arkansas radar (KSRX), 24 km from the middle of the area, began a volume at 03:00 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 00:00Z, 3.0 hours before the alert went out and 206 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
- 150 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 847 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 147 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.2
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 9, 6:56 PM CST | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Franklin, Howard, Little River and 8 more | 64 min |
| Mar 10, 5:56 PM CST | Mesoscale Discussion | SPC | Armstrong, Briscoe, Carson, Donley, Floyd, Gray and 4 more | 64 min |
Nearby
Mesoscale Discussions in Arkansas, 2007Mesoscale Discussions in Missouri, 2007Mesoscale Discussions in Texas, 2007Every mesoscale discussion in 2007
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.