Alert archive / Arkansas / Mesoscale Discussions in 2003

Mesoscale Discussion 1895

July 19, 200322 counties in Arkansas; Tunica County, Mississippi; Howell County, Oregon County, Texas County, Missouri

The Storm Prediction Center issued this mesoscale discussion at Jul 19, 2003, 5:41 AM CDT for 22 counties in Arkansas; Tunica County, Mississippi; Howell County, Oregon County, Texas County, Missouri. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued
Jul 19, 2003, 5:41 AM CDT (10:41 UTC)
Expired
Jul 19, 2003, 7:15 AM CDT
In force
94 min
Issued by
the Storm Prediction Center
All 26 counties

Arkansas County, AR, Cleburne County, AR, Conway County, AR, Faulkner County, AR, Fulton County, AR, Independence County, AR, Izard County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Monroe County, AR, Newton County, AR, Phillips County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Howell County, MO, Oregon County, MO, Texas County, MO, Tunica County, MS

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 10.7 hours before the alert went out and 203 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 2003-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2986 joules per kilogram.LCLEL10008507005003002001001 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 2003-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 square meters per square second.1939Sfc1 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
2986 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1631 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.3
Supercell composite
8.2

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
Jul 18, 7:08 PM CDTMesoscale DiscussionSPCBaxter, Boone, Carroll, Fulton, Marion97 min
Jul 18, 7:55 PM CDTSevere Thunderstorm WatchSPCBaxter, Clay, Cleburne, Craighead, Crittenden, Cross and 16 more6 hr
Jul 18, 11:13 PM CDTMesoscale DiscussionSPCBaxter, Clay, Cleburne, Craighead, Crittenden, Cross and 16 more92 min
Jul 19, 1:27 AM CDTMesoscale DiscussionSPCBaxter, Boone, Cleburne, Conway, Faulkner, Fulton and 13 more63 min
Jul 19, 1:40 AM CDTSevere Thunderstorm WatchSPCBaxter, Boone, Cleburne, Conway, Faulkner, Fulton and 18 more5 hr
Jul 19, 3:36 AM CDTMesoscale DiscussionSPCArkansas, Faulkner, Grant, Jefferson, Lincoln, Lonoke and 4 more84 min
Jul 19, 11:57 AM CDTMesoscale DiscussionSPCAdams, Amite, Claiborne, Clarke, Copiah, Covington and 32 more2 hr
Jul 18, 7:34 PM CDTMesoscale DiscussionSPCAudrain, Bollinger, Butler, Callaway, Cape Girardeau, Carter and 26 more56 min

Nearby

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