Alert archive / Arkansas / Mesoscale Discussions in 2008
Mesoscale Discussion 102
The Storm Prediction Center issued this mesoscale discussion at Jan 29, 2008, 7:57 AM CST for 28 counties in Arkansas; 8 parishes in Louisiana. It was in force for 93 min.
The area
The outline as issued.
The facts
- Issued
- Jan 29, 2008, 7:57 AM CST (13:57 UTC)
- Expired
- Jan 29, 2008, 9:30 AM CST
- In force
- 93 min
- Issued by
- the Storm Prediction Center
All 36 counties
Arkansas County, AR, Ashley County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Jefferson County, AR, Lafayette County, AR, Lincoln County, AR, Lonoke County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Pike County, AR, Pulaski County, AR, Saline County, AR, Union County, AR, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, Lincoln Parish, LA, Morehouse Parish, LA, Ouachita Parish, LA, Union Parish, LA, Webster Parish, LA
The radar
The Little Rock radar (KLZK), 137 km from the middle of the area, began a volume at 13:58 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
Shreveport, LA (KSHV), launched 12:00Z, 2.0 hours before the alert went out and 161 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
- 102 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 530 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 325 m²/s²
- 0-3 km storm-relative helicity
- 308 m²/s²
- Significant tornado parameter
- 0.0
- 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 |
|---|---|---|---|---|
| Jan 29, 10:21 AM CST | Mesoscale Discussion | SPC | Clay, Craighead, Crittenden, Cross, Greene, Mississippi and 1 more | 54 min |
| Jan 29, 10:54 AM CST | Mesoscale Discussion | SPC | Clay, Cleburne, Craighead, Crittenden, Cross, Greene and 14 more | 66 min |
| Jan 29, 11:32 AM CST | Tornado Watch | SPC | Clay, Cleburne, Craighead, Crittenden, Cross, Fulton and 18 more | 7 hr |
Nearby
Mesoscale Discussions in Arkansas, 2008Mesoscale Discussions in Louisiana, 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.