Alert archive / Arkansas / Mesoscale Discussions in 2008

Mesoscale Discussion 327

March 3, 200826 counties in Arkansas; 10 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 3, 2008, 3:01 AM CST for 26 counties in Arkansas; 10 counties in Texas. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued
Mar 3, 2008, 3:01 AM CST (09:01 UTC)
Expired
Mar 3, 2008, 4:30 AM CST
In force
89 min
Issued by
the Storm Prediction Center
All 36 counties

Clark County, AR, Cleburne County, AR, Conway County, AR, Dallas County, AR, Faulkner County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Lonoke County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Pulaski County, AR, Saline County, AR, Sevier County, AR, Van Buren County, AR, Yell County, AR, Bowie County, TX, Camp County, TX, Cass County, TX, Franklin County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Red River County, TX, Titus County, TX, Upshur County, TX

The radar

The Western Arkansas radar (KSRX), 152 km from the middle of the area, began a volume at 09:02 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

Springfield, MO (KSGF), launched 00:00Z, 9.0 hours before the alert went out and 320 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.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2008-03-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2008-03-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
6 J/kg
Mixed-layer CIN
-194 J/kg
Mixed-layer LCL
1331 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
217 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 2, 8:23 PM CSTTornado WatchSPCCrawford, Franklin, Howard, Little River, Miller, Polk and 3 more8 hr
Mar 3, 1:36 AM CSTMesoscale DiscussionSPCHoward, Little River, Logan, Montgomery, Pike, Polk and 3 more54 min
Mar 3, 5:21 AM CSTMesoscale DiscussionSPCLafayette, Miller84 min
Mar 3, 6:47 AM CSTSevere Thunderstorm WatchSPCColumbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more6 hr
Mar 3, 10:18 AM CSTMesoscale DiscussionSPCColumbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more87 min
Mar 3, 10:36 AM CSTTornado WatchSPCAshley, Bradley, Calhoun, Chicot, Cleveland, Columbia and 8 more9 hr
Mar 3, 1:25 PM CSTMesoscale DiscussionSPCAshley, Chicot, Desha, Drew95 min
Mar 2, 6:05 PM CSTTornado WatchSPCBosque, Callahan, Collin, Comanche, Cooke, Dallas and 28 more8 hr
Mar 2, 8:01 PM CSTMesoscale DiscussionSPCCollin, Delta, Fannin, Franklin, Grayson, Hopkins and 4 more59 min
Mar 2, 11:04 PM CSTMesoscale DiscussionSPCBrown, Callahan, Coke, Coleman, Comanche, Concho and 12 more56 min
Mar 2, 11:27 PM CSTSevere Thunderstorm WatchSPCBrown, Coke, Coleman, Concho, Crockett, Irion and 13 more5 hr
Mar 3, 1:57 AM CSTTornado WatchSPCAnderson, Bell, Bosque, Collin, Comanche, Coryell and 26 more6 hr
Mar 3, 3:24 AM CSTMesoscale DiscussionSPCBastrop, Blanco, Brazos, Burleson, Burnet, Grimes and 9 more96 min

Nearby

Mesoscale Discussions in Arkansas, 2008Mesoscale Discussions in Texas, 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.