Alert archive / Arkansas / Mesoscale Discussions in 2003

Mesoscale Discussion 926

May 10, 20035 states

The Storm Prediction Center issued this mesoscale discussion at May 10, 2003, 7:06 PM CDT for 5 states. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued
May 10, 2003, 7:06 PM CDT (00:06 UTC)
Expired
May 10, 2003, 8:00 PM CDT
In force
54 min
Issued by
the Storm Prediction Center
All 91 counties

Baxter County, AR, Boone County, AR, Clay County, AR, Cleburne County, AR, Conway County, AR, Craighead County, AR, Cross County, AR, Faulkner County, AR, Fulton County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Johnson County, AR, Lawrence County, AR, Logan County, AR, Marion County, AR, Mississippi County, AR, Newton County, AR, Poinsett County, AR, Pope County, AR, Randolph County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Alexander County, IL, Franklin County, IL, Hardin County, IL, Jackson County, IL, Johnson County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Saline County, IL, Union County, IL, Williamson County, IL, Ballard County, KY, Calloway County, KY, Carlisle County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Dent County, MO, Douglas County, MO, Dunklin County, MO, Howell County, MO, Iron County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Ozark County, MO, Pemiscot County, MO, Perry County, MO, Phelps County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Texas County, MO, Washington County, MO, Wayne County, MO, Wright County, MO, Carroll County, TN, Crockett County, TN, Dyer County, TN, Gibson County, TN, Haywood County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Tipton County, TN, Weakley County, TN

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 0.1 hours before the alert went out and 179 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, Little Rock, AR at 00:00Z on 2003-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1530 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, Little Rock, AR at 00:00Z on 2003-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 165 square meters per square second.1939587897Sfc1 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
1530 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
1136 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
165 m²/s²
0-3 km storm-relative helicity
215 m²/s²
Significant tornado parameter
1.5
Supercell composite
9.7

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.

IssuedProductOfficeCountiesLasted
May 10, 7:00 PM CDTSevere Thunderstorm WatchSPCArkansas, Clark, Cleveland, Dallas, Garland, Grant and 18 more5 hr
May 10, 8:45 PM CDTTornado WatchSPCBaxter, Clay, Cleburne, Conway, Craighead, Crittenden and 18 more5 hr
May 10, 10:29 PM CDTMesoscale DiscussionSPCArkansas, Clark, Cleveland, Dallas, Garland, Grant and 15 more91 min
May 10, 8:05 PM CDTTornado WatchSPCBoone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more6 hr
May 10, 8:18 PM CDTMesoscale DiscussionSPCBureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 8 more117 min
May 10, 8:41 PM CDTMesoscale DiscussionSPCCrawford, Lawrence, Richland, Wabash2 hr
May 10, 9:10 PM CDTTornado WatchSPCAdams, Bond, Brown, Calhoun, Cass, Champaign and 45 more5 hr
May 10, 9:35 PM CDTTornado WatchSPCBureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 11 more3 hr
May 10, 10:56 PM CDTMesoscale DiscussionSPCBoone, Bureau, Cook, DeKalb, DuPage, Ford and 19 more94 min
May 11, 1:46 AM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Champaign and 42 more89 min
May 10, 8:28 PM CDTMesoscale DiscussionSPCBreathitt, Floyd, Johnson, Knott, Magoffin, Martin and 1 more62 min
May 10, 10:04 PM CDTMesoscale DiscussionSPCAllen, Barren, Breckinridge, Butler, Caldwell, Calloway and 23 more116 min
May 10, 11:20 PM CDTTornado WatchSPCAdair, Allen, Anderson, Barren, Bourbon, Boyle and 38 more6 hr
May 10, 11:28 PM CDTMesoscale DiscussionSPCBoone, Bracken, Campbell, Carroll, Gallatin, Grant and 2 more2 hr
May 11, 4:16 AM CDTMesoscale DiscussionSPCAdair, Anderson, Barren, Bath, Bell, Bourbon and 68 more59 min
May 11, 5:05 AM CDTSevere Thunderstorm WatchSPCBath, Bell, Bourbon, Boyle, Breathitt, Casey and 38 more4 hr
May 11, 5:55 AM CDTSevere Thunderstorm WatchSPCBell, Harlan5 hr
May 11, 3:10 AM CDTMesoscale DiscussionSPCBedford, Bledsoe, Cannon, Clay, Coffee, Cumberland and 18 more95 min
May 11, 3:20 AM CDTSevere Thunderstorm WatchSPCBedford, Bledsoe, Campbell, Cannon, Clay, Coffee and 25 more5 hr
May 11, 5:22 AM CDTMesoscale DiscussionSPCBedford, Bledsoe, Campbell, Cannon, Coffee, Cumberland and 24 more83 min

Nearby

Mesoscale Discussions in Arkansas, 2003Mesoscale Discussions in Missouri, 2003Mesoscale Discussions in Illinois, 2003Every 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.