Alert archive / Arkansas / Mesoscale Discussions in 2003

Mesoscale Discussion 771

May 5, 200330 counties in Arkansas; Dunklin County, Pemiscot County, Missouri; Dyer County, Lake County, Lauderdale County, Tennessee

The Storm Prediction Center issued this mesoscale discussion at May 5, 2003, 5:18 PM CDT for 30 counties in Arkansas; Dunklin County, Pemiscot County, Missouri; Dyer County, Lake County, Lauderdale County, Tennessee. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: May 5, 2003, 5:18 PM CDT (22:18 UTC)
Expired: May 5, 2003, 7:15 PM CDT
In force: 117 min
Issued by: the Storm Prediction Center

All 35 counties

Ashley County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Craighead County, AR, Cross County, AR, Dallas County, AR, Drew County, AR, Grant County, AR, Greene County, AR, Hempstead County, AR, Hot Spring County, AR, Jackson County, AR, Jefferson County, AR, Lafayette County, AR, Lincoln County, AR, Lonoke County, AR, Miller County, AR, Mississippi County, AR, Nevada County, AR, Ouachita County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Union County, AR, White County, AR, Woodruff County, AR, Dunklin County, MO, Pemiscot County, MO, Dyer County, TN, Lake County, TN, Lauderdale County, TN

The radar

The Little Rock radar (KLZK), 51 km from the middle of the area, began a volume at 22:18 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 nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 10.3 hours before the alert went out and 170 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: 2211 J/kg
Mixed-layer CIN: -81 J/kg
Mixed-layer LCL: 850 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 117 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 4.3

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
May 4, 7:19 PM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Conway and 21 more	86 min
May 4, 7:34 PM CDT	Mesoscale Discussion	SPC	Clay, Craighead, Crittenden, Cross, Greene, Jackson and 7 more	116 min
May 4, 9:26 PM CDT	Mesoscale Discussion	SPC	Clay, Craighead, Crittenden, Cross, Greene, Jackson and 7 more	2 hr
May 4, 9:42 PM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Conway and 29 more	93 min
May 5, 12:50 AM CDT	Tornado Watch	SPC	Baxter, Benton, Boone, Carroll, Clark, Cleburne and 34 more	5 hr
May 5, 1:20 AM CDT	Tornado Watch	SPC	Arkansas, Clay, Craighead, Crittenden, Cross, Greene and 7 more	6 hr
May 5, 4:18 AM CDT	Mesoscale Discussion	SPC	Clay, Craighead, Crittenden, Cross, Greene, Independence and 14 more	57 min
May 5, 4:55 AM CDT	Tornado Watch	SPC	Clay, Craighead, Crittenden, Cross, Greene, Jackson and 9 more	6 hr
May 5, 7:11 AM CDT	Mesoscale Discussion	SPC	Crittenden, Cross, Lee, Mississippi, St. Francis	2 hr
May 5, 9:56 AM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 33 more	2 hr
May 5, 10:38 AM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 19 more	3 hr
May 5, 10:40 AM CDT	Tornado Watch	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 21 more	5 hr
May 5, 1:05 PM CDT	Tornado Watch	SPC	Cleburne, Conway, Craighead, Crawford, Crittenden, Cross and 21 more	3 hr
May 5, 1:13 PM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Bradley, Calhoun, Clark, Cleveland and 17 more	2 hr
May 5, 3:25 PM CDT	Tornado Watch	SPC	Arkansas, Ashley, Baxter, Boone, Bradley, Calhoun and 62 more	7 hr
May 5, 5:40 PM CDT	Mesoscale Discussion	SPC	Ashley, Bradley, Chicot, Desha, Drew	2 hr
May 4, 8:05 PM CDT	Mesoscale Discussion	SPC	Audrain, Bollinger, Callaway, Cape Girardeau, Clark, Crawford and 27 more	85 min
May 4, 9:05 PM CDT	Mesoscale Discussion	SPC	Bates, Benton, Boone, Caldwell, Carroll, Cass and 23 more	85 min
May 4, 10:40 PM CDT	Tornado Watch	SPC	Bollinger, Cape Girardeau, Franklin, Iron, Jefferson, Madison and 5 more	5 hr
May 4, 11:05 PM CDT	Severe Thunderstorm Watch	SPC	Audrain, Boone, Callaway, Cole, Franklin, Gasconade and 17 more	5 hr
May 5, 1:30 AM CDT	Mesoscale Discussion	SPC	Bollinger, Cape Girardeau, Iron, Jefferson, Madison, Perry and 3 more	90 min
May 5, 1:46 AM CDT	Mesoscale Discussion	SPC	City of Saint Louis	89 min
May 5, 3:41 AM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Iron, Madison, Mississippi and 8 more	34 min
May 5, 3:50 AM CDT	Tornado Watch	SPC	Bollinger, Butler, Cape Girardeau, Iron, Jefferson, Madison and 9 more	6 hr
May 5, 6:32 AM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Madison, Mississippi, New Madrid and 4 more	88 min
May 5, 9:19 AM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Madison, Mississippi, Perry and 5 more	56 min
May 5, 2:35 PM CDT	Tornado Watch	SPC	New Madrid, Pemiscot	7 hr
May 4, 11:37 PM CDT	Mesoscale Discussion	SPC	Bedford, Cannon, Cheatham, Clay, Coffee, Davidson and 29 more	23 min
May 4, 11:45 PM CDT	Tornado Watch	SPC	Bedford, Cannon, Cheatham, Clay, Coffee, Davidson and 30 more	5 hr
May 5, 2:31 AM CDT	Mesoscale Discussion	SPC	Anderson, Bedford, Bledsoe, Blount, Campbell, Cannon and 42 more	89 min
May 5, 3:15 AM CDT	Tornado Watch	SPC	Anderson, Bledsoe, Blount, Bradley, Campbell, Claiborne and 25 more	6 hr
May 5, 6:07 AM CDT	Mesoscale Discussion	SPC	Anderson, Bledsoe, Bradley, Cumberland, Fentress, Grundy and 15 more	83 min
May 5, 8:50 AM CDT	Tornado Watch	SPC	Bledsoe, Blount, Bradley, Grundy, Hamilton, Loudon and 8 more	6 hr
May 5, 9:05 AM CDT	Mesoscale Discussion	SPC	Bedford, Benton, Cannon, Carroll, Cheatham, Chester and 42 more	115 min
May 5, 9:35 AM CDT	Tornado Watch	SPC	Bedford, Benton, Cannon, Carroll, Cheatham, Chester and 48 more	5 hr
May 5, 11:06 AM CDT	Mesoscale Discussion	SPC	Bedford, Benton, Cannon, Carroll, Cheatham, Chester and 43 more	114 min
May 5, 11:59 AM CDT	Mesoscale Discussion	SPC	Pickett	61 min
May 5, 12:52 PM CDT	Mesoscale Discussion	SPC	Bledsoe, Blount, Bradley, Hamilton, McMinn, Marion and 5 more	113 min
May 5, 2:13 PM CDT	Mesoscale Discussion	SPC	Bedford, Benton, Bledsoe, Blount, Bradley, Cannon and 62 more	62 min

Nearby

Mesoscale Discussions in Arkansas, 2003 Mesoscale Discussions in Tennessee, 2003 Mesoscale Discussions in Missouri, 2003 Every mesoscale discussion in 2003

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.