Alert archive / Arkansas / Mesoscale Discussions in 2008

Mesoscale Discussion 157

February 5, 20084 states

The Storm Prediction Center issued this mesoscale discussion at Feb 5, 2008, 11:16 AM CST for 4 states. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Feb 5, 2008, 11:16 AM CST (17:16 UTC)
Expired: Feb 5, 2008, 12:45 PM CST
In force: 89 min
Issued by: the Storm Prediction Center

All 107 counties

Arkansas County, AR, Ashley County, AR, Baxter County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Clay County, AR, Cleburne County, AR, Cleveland County, AR, Columbia County, AR, Conway County, AR, Craighead County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Greene County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Lafayette County, AR, Lawrence County, AR, Lee County, AR, Lincoln County, AR, Little River County, AR, Lonoke County, AR, Marion County, AR, Miller County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Poinsett County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Searcy County, AR, Sevier County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Union County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Morehouse Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Union Parish, LA, Webster Parish, LA, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Dunklin County, MO, Howell County, MO, Iron County, MO, Madison County, MO, Oregon County, MO, Ozark County, MO, Reynolds County, MO, Ripley County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Wayne County, MO, Bowie County, TX, Camp County, TX, Cass County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Marion County, TX, Morris County, TX, Panola County, TX, Rains County, TX, Red River County, TX, Rusk County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Little Rock radar (KLZK), 106 km from the middle of the area, began a volume at 17:18 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

Shreveport, LA (KSHV), launched 12:00Z, 5.3 hours before the alert went out and 201 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: 544 J/kg
Mixed-layer CIN: -205 J/kg
Mixed-layer LCL: 617 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 279 m²/s²
0-3 km storm-relative helicity: 354 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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, 6:39 AM CST	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Clark, Cleburne and 32 more	3 hr
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, 11:56 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 5, 2:00 AM CST	Mesoscale Discussion	SPC	Bandera, Blanco, Bosque, Brown, Burnet, Callahan and 40 more	3 hr
Feb 5, 2:28 AM CST	Severe Thunderstorm Watch	SPC	Bell, Bosque, Collin, Comanche, Cooke, Coryell and 36 more	6 hr
Feb 5, 5:03 AM CST	Mesoscale Discussion	SPC	Bosque, Collin, Cooke, Dallas, Delta, Denton and 17 more	117 min
Feb 5, 2:15 PM CST	Mesoscale Discussion	SPC	Anderson, Bowie, Camp, Cass, Collin, Dallas and 23 more	90 min
Feb 5, 3:59 PM CST	Severe Thunderstorm Watch	SPC	Anderson, Angelina, Cherokee, Gregg, Harrison, Leon and 7 more	4 hr
Feb 5, 5:54 PM CST	Mesoscale Discussion	SPC	Austin, Brazoria, Chambers, Colorado, Fort Bend, Galveston and 14 more	96 min

Nearby

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