Alert archive / Arkansas / Mesoscale Discussions in 2008

Mesoscale Discussion 152

February 5, 200838 counties in Arkansas; 6 counties in Missouri; Adair County, LeFlore County, Sequoyah County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Feb 5, 2008, 6:39 AM CST for 38 counties in Arkansas; 6 counties in Missouri; Adair County, LeFlore County, Sequoyah County, Oklahoma. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Feb 5, 2008, 6:39 AM CST (12:39 UTC)
Expired: Feb 5, 2008, 9:15 AM CST
In force: 3 hr
Issued by: the Storm Prediction Center

All 47 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Clark County, AR, Cleburne County, AR, Conway County, AR, Crawford County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Garland County, AR, Hot Spring County, AR, Howard County, AR, Independence County, AR, Izard County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Montgomery County, AR, Newton County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sevier County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, White County, AR, Yell County, AR, Douglas County, MO, Howell County, MO, Oregon County, MO, Ozark County, MO, Stone County, MO, Taney County, MO, Adair County, OK, LeFlore County, OK, Sequoyah County, OK

The radar

The Little Rock radar (KLZK), 115 km from the middle of the area, began a volume at 12:41 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 12:00Z, 0.7 hours before the alert went out and 155 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 325 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 477 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 259 m²/s²
0-3 km storm-relative helicity: 223 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.4

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.

Issued	Product	Office	Counties	Lasted
Feb 4, 9:21 PM CST	Mesoscale Discussion	SPC	Clay, Fulton, Greene, Randolph, Sharp	84 min
Feb 5, 9:47 AM CST	Mesoscale Discussion	SPC	Clay, Craighead, Crittenden, Cross, Greene, Jackson and 5 more	88 min
Feb 5, 10:18 AM CST	Mesoscale Discussion	SPC	Benton, Boone, Carroll, Crawford, Franklin, Johnson and 7 more	87 min
Feb 5, 11:16 AM CST	Mesoscale Discussion	SPC	Arkansas, Ashley, Baxter, Bradley, Calhoun, Clark and 53 more	89 min
Feb 5, 11:56 AM CST	Tornado Watch	SPC	Howard, Little River, Miller, Sevier	7 hr
Feb 5, 12:11 PM CST	Mesoscale Discussion	SPC	Arkansas, Ashley, Chicot, Crittenden, Cross, Desha and 7 more	94 min
Feb 5, 12:39 PM CST	Tornado Watch	SPC	Baxter, Benton, Boone, Carroll, Crawford, Franklin and 14 more	7 hr
Feb 5, 2:08 PM CST	Tornado Watch PDS	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 33 more	10 hr
Feb 5, 3:09 PM CST	Tornado Watch PDS	SPC	Clay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more	9 hr
Feb 5, 3:17 PM CST	Mesoscale Discussion	SPC	Baxter, Boone, Carroll, Crawford, Franklin, Johnson and 9 more	88 min
Feb 5, 3:36 PM CST	Mesoscale Discussion	SPC	Ashley, Bradley, Calhoun, Clark, Cleburne, Cleveland and 19 more	84 min
Feb 5, 5:39 PM CST	Mesoscale Discussion	SPC	Arkansas, Baxter, Bradley, Calhoun, Clark, Clay and 42 more	96 min
Feb 4, 6:20 PM CST	Mesoscale Discussion	SPC	Audrain, Barry, Barton, Benton, Boone, Callaway and 59 more	85 min
Feb 4, 7:14 PM CST	Severe Thunderstorm Watch	SPC	Audrain, Barry, Barton, Benton, Boone, Callaway and 41 more	6 hr
Feb 4, 9:44 PM CST	Mesoscale Discussion	SPC	Callaway, Camden, Cedar, Cole, Crawford, Dade and 23 more	91 min
Feb 5, 6:45 AM CST	Mesoscale Discussion	SPC	Mississippi, New Madrid, Stoddard	2 hr
Feb 5, 7:07 AM CST	Mesoscale Discussion	SPC	Andrew, Buchanan, Caldwell, Clay, Clinton, Daviess and 6 more	6 hr
Feb 5, 4:46 PM CST	Mesoscale Discussion	SPC	Jefferson, Saint Louis, Washington, City of Saint Louis	119 min
Feb 5, 5:26 PM CST	Mesoscale Discussion	SPC	Andrew, Atchison, Buchanan, Caldwell, Clay, Clinton and 8 more	5 hr
Feb 4, 7:48 PM CST	Mesoscale Discussion	SPC	Craig, Creek, Delaware, Lincoln, Mayes, Nowata and 6 more	87 min
Feb 5, 2:31 AM CST	Mesoscale Discussion	SPC	Beckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 24 more	2 hr
Feb 5, 5:03 AM CST	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Cherokee, Choctaw, Cleveland and 37 more	117 min
Feb 5, 2:15 PM CST	Mesoscale Discussion	SPC	Atoka, Bryan, Choctaw, Haskell, Latimer, McCurtain and 1 more	90 min

Nearby

Mesoscale Discussions in Arkansas, 2008 Mesoscale Discussions in Missouri, 2008 Mesoscale Discussions in Oklahoma, 2008 Every 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.