Alert archive / Arkansas / Mesoscale Discussions in 2003

Mesoscale Discussion 1020

May 16, 200332 counties in Arkansas; 10 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 16, 2003, 7:42 AM CDT for 32 counties in Arkansas; 10 counties in Missouri. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued
May 16, 2003, 7:42 AM CDT (12:42 UTC)
Expired
May 16, 2003, 8:45 AM CDT
In force
63 min
Issued by
the Storm Prediction Center
All 42 counties

Arkansas County, AR, Baxter County, AR, Boone County, AR, Cleburne County, AR, Cleveland County, AR, Conway County, AR, Dallas County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Lincoln County, AR, Lonoke County, AR, Marion County, AR, Monroe County, AR, Newton County, AR, Perry County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Christian County, MO, Douglas County, MO, Howell County, MO, Oregon County, MO, Ozark County, MO, Shannon County, MO, Taney County, MO, Texas County, MO, Webster County, MO, Wright County, MO

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 0.7 hours before the alert went out and 163 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, Springfield, MO at 12:00Z on 2003-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 189 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, Springfield, MO at 12:00Z on 2003-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 178 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
189 J/kg
Mixed-layer CIN
-176 J/kg
Mixed-layer LCL
777 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
178 m²/s²
0-3 km storm-relative helicity
168 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

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, 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, 3:18 PM CDTMesoscale DiscussionSPCClark, Garland, Hempstead, Hot Spring, Howard, Little River and 11 more117 min
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

Nearby

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