Alert archive / Arkansas / Mesoscale Discussions in 2008
Mesoscale Discussion 28
The Storm Prediction Center issued this mesoscale discussion at Jan 8, 2008, 7:18 AM CST for 40 counties in Arkansas. It was in force for 117 min.
The area
The outline as issued.
The facts
- Issued
- Jan 8, 2008, 7:18 AM CST (13:18 UTC)
- Expired
- Jan 8, 2008, 9:15 AM CST
- In force
- 117 min
- Issued by
- the Storm Prediction Center
All 40 counties
Arkansas County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleburne County, AR, Cleveland County, AR, Columbia County, AR, Conway County, AR, Cross County, AR, Dallas County, AR, Faulkner County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Lawrence County, AR, Lincoln County, AR, Lonoke County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Poinsett County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Searcy County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR
The radar
The Little Rock radar (KLZK), 36 km from the middle of the area, began a volume at 13:18 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 1.3 hours before the alert went out and 240 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
- 181 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 709 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 466 m²/s²
- 0-3 km storm-relative helicity
- 474 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 5.1
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 |
|---|---|---|---|---|
| Jan 7, 6:11 PM CST | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Franklin, Madison, Washington | 94 min |
| Jan 7, 7:48 PM CST | Tornado Watch | SPC | Baxter, Benton, Boone, Carroll, Crawford, Franklin and 9 more | 9 hr |
| Jan 7, 10:04 PM CST | Mesoscale Discussion | SPC | Benton, Carroll, Washington | 86 min |
| Jan 8, 3:44 AM CST | Mesoscale Discussion | SPC | Baxter, Benton, Carroll, Fulton | 91 min |
| Jan 8, 8:34 AM CST | Tornado Watch | SPC | Arkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 45 more | 5 hr |
| Jan 8, 11:27 AM CST | Mesoscale Discussion | SPC | Arkansas, Ashley, Baxter, Bradley, Calhoun, Chicot and 48 more | 2 hr |
| Jan 8, 1:11 PM CST | Mesoscale Discussion | SPC | Chicot, Crittenden, Desha, Lee, Mississippi, Phillips and 1 more | 2 hr |
| Jan 8, 1:26 PM CST | Tornado Watch | SPC | Arkansas, Ashley, Bradley, Chicot, Crittenden, Desha and 7 more | 8 hr |
Nearby
Mesoscale Discussions in Arkansas, 2008Every mesoscale discussion in 2008
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.