Alert archive / Arkansas / Mesoscale Discussions in 2003

Mesoscale Discussion 1028

May 16, 200317 counties in Arkansas; LeFlore County, McCurtain County, Oklahoma; Bowie County, Red River County, Texas

The Storm Prediction Center issued this mesoscale discussion at May 16, 2003, 3:18 PM CDT for 17 counties in Arkansas; LeFlore County, McCurtain County, Oklahoma; Bowie County, Red River County, Texas. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued
May 16, 2003, 3:18 PM CDT (20:18 UTC)
Expired
May 16, 2003, 5:15 PM CDT
In force
117 min
Issued by
the Storm Prediction Center
All 21 counties

Clark County, AR, Garland County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Little River County, AR, Logan County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Pike County, AR, Polk County, AR, Saline County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Yell County, AR, LeFlore County, OK, McCurtain County, OK, Bowie County, TX, Red River County, TX

The radar

The Western Arkansas radar (KSRX), 136 km from the middle of the area, began a volume at 20:19 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, 8.3 hours before the alert went out and 183 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, Shreveport, LA at 12:00Z on 2003-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 299 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, Shreveport, LA at 12:00Z on 2003-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 223 square meters per square second.19395878Sfc1 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
299 J/kg
Mixed-layer CIN
-621 J/kg
Mixed-layer LCL
1397 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
223 m²/s²
0-3 km storm-relative helicity
439 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 16, 4:04 AM CDTMesoscale DiscussionSPCBenton, Boone, Carroll, Clark, Crawford, Franklin and 17 more56 min
May 16, 4:25 AM CDTSevere Thunderstorm WatchSPCBenton, Carroll, Crawford, Franklin, Howard, Johnson and 10 more5 hr
May 16, 5:47 AM CDTMesoscale DiscussionSPCBenton, Carroll, Crawford, Franklin, Howard, Johnson and 10 more58 min
May 16, 6:35 AM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Clark, Cleburne and 36 more25 min
May 16, 6:50 AM CDTSevere Thunderstorm WatchSPCArkansas, Baxter, Boone, Cleburne, Cleveland, Conway and 27 more4 hr
May 16, 7:42 AM CDTMesoscale DiscussionSPCArkansas, Baxter, Boone, Cleburne, Cleveland, Conway and 26 more63 min
May 16, 9:16 AM CDTMesoscale DiscussionSPCHoward, Little River, Polk, Sevier119 min
May 16, 9:39 AM CDTMesoscale DiscussionSPCClay, Crittenden, Mississippi96 min
May 16, 12:09 PM CDTMesoscale DiscussionSPCBradley, Calhoun, Clark, Cleveland, Columbia, Conway and 28 more3 hr
May 16, 12:45 PM CDTTornado WatchSPCBradley, Calhoun, Clark, Cleburne, Cleveland, Columbia and 33 more5 hr
May 16, 2:12 PM CDTMesoscale DiscussionSPCArkansas, Baxter, Boone, Clark, Clay, Cleburne and 44 more93 min
May 16, 2:50 PM CDTTornado WatchSPCArkansas, Ashley, Chicot, Clay, Craighead, Crittenden and 16 more7 hr
May 16, 3:34 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Fulton, Izard and 6 more116 min
May 16, 3:55 PM CDTTornado WatchSPCBaxter, Benton, Boone, Carroll, Fulton, Independence and 8 more6 hr
May 16, 5:06 PM CDTMesoscale DiscussionSPCBradley, Calhoun, Clark, Cleburne, Cleveland, Columbia and 33 more54 min
May 16, 5:45 PM CDTTornado WatchSPCArkansas, Bradley, Calhoun, Clark, Cleburne, Cleveland and 40 more6 hr
May 16, 5:59 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Chicot, Clay, Craighead, Crittenden and 13 more91 min
May 16, 6:39 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Clay, Cleburne and 20 more2 hr
May 15, 8:38 PM CDTMesoscale DiscussionSPCCotton, Jackson, Jefferson, Stephens, Tillman2 hr
May 15, 10:25 PM CDTTornado WatchSPCCotton, Jackson, Jefferson, Stephens, Tillman6 hr
May 15, 10:30 PM CDTMesoscale DiscussionSPCAlfalfa, Beaver, Beckham, Blaine, Custer, Dewey and 8 more2 hr
May 15, 11:32 PM CDTMesoscale DiscussionSPCCimarron, Texas118 min
May 15, 11:35 PM CDTTornado WatchSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 13 more4 hr
May 15, 11:49 PM CDTMesoscale DiscussionSPCCotton, Jackson, Jefferson, Stephens, Tillman86 min
May 16, 1:20 AM CDTTornado WatchSPCAtoka, Bryan, Carter, Choctaw, Cleveland, Coal and 33 more6 hr
May 16, 1:22 AM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Caddo, Canadian, Cleveland, Custer and 16 more53 min
May 16, 2:33 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Cleveland, Coal and 16 more57 min
May 16, 3:07 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Cleveland, Coal and 33 more53 min
May 16, 5:22 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Coal, Johnston, Latimer and 10 more53 min
May 16, 11:35 AM CDTMesoscale DiscussionSPCCaddo, Canadian, Cleveland, Creek, Garfield, Grady and 20 more2 hr
May 16, 12:00 PM CDTTornado WatchSPCAdair, Canadian, Cherokee, Craig, Creek, Delaware and 23 more6 hr
May 16, 1:46 PM CDTMesoscale DiscussionSPCCherokee, Creek, Lincoln, Logan, McIntosh, Mayes and 12 more89 min

Nearby

Mesoscale Discussions in Arkansas, 2003Mesoscale Discussions in Oklahoma, 2003Mesoscale Discussions in Texas, 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; radar from the NEXRAD Level II archive.