Alert archive / Arkansas / Mesoscale Discussions in 2003

Mesoscale Discussion 1952

July 22, 200337 counties in Arkansas; 4 counties in Mississippi; 12 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jul 22, 2003, 2:49 AM CDT for 37 counties in Arkansas; 4 counties in Mississippi; 12 counties in Oklahoma. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued
Jul 22, 2003, 2:49 AM CDT (07:49 UTC)
Expired
Jul 22, 2003, 4:45 AM CDT
In force
116 min
Issued by
the Storm Prediction Center
All 53 counties

Arkansas County, AR, Clark County, AR, Cleburne County, AR, Conway County, AR, Crawford County, AR, Crittenden County, AR, Cross County, AR, Faulkner County, AR, Franklin County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Jackson County, AR, Jefferson County, AR, Johnson County, AR, Lee County, AR, Lincoln County, AR, Logan County, AR, Lonoke County, AR, Monroe County, AR, Montgomery County, AR, Perry County, AR, Phillips County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Sebastian County, AR, St. Francis County, AR, Van Buren County, AR, Washington County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Coahoma County, MS, DeSoto County, MS, Quitman County, MS, Tunica County, MS, Adair County, OK, Cherokee County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, McIntosh County, OK, Muskogee County, OK, Okfuskee County, OK, Okmulgee County, OK, Pittsburg County, OK, Sequoyah County, OK, Wagoner County, OK

The radar

The Western Arkansas radar (KSRX), 82 km from the middle of the area, began a volume at 07:51 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

Springfield, MO (KSGF), launched 00:00Z, 7.8 hours before the alert went out and 186 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 00:00Z on 2003-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 166 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 00:00Z on 2003-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.193958Sfc1 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
166 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
2509 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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.

IssuedProductOfficeCountiesLasted
Jul 21, 7:06 PM CDTMesoscale DiscussionSPCCleburne, Craighead, Faulkner, Greene, Independence, Izard and 8 more84 min
Jul 21, 11:39 PM CDTMesoscale DiscussionSPCBenton2 hr
Jul 22, 1:20 AM CDTSevere Thunderstorm WatchSPCBaxter, Benton, Boone, Carroll, Cleburne, Crawford and 10 more7 hr
Jul 22, 3:45 AM CDTSevere Thunderstorm WatchSPCArkansas, Clark, Cleburne, Conway, Crawford, Crittenden and 30 more5 hr
Jul 22, 4:47 AM CDTMesoscale DiscussionSPCCross, Lee, Lonoke, Monroe, Phillips, Prairie and 3 more118 min
Jul 22, 6:29 AM CDTMesoscale DiscussionSPCAlcorn, Benton, DeSoto, Marshall, Prentiss, Tippah and 2 more91 min
Jul 22, 6:40 AM CDTSevere Thunderstorm WatchSPCAlcorn, Benton, Itawamba, Lee, Pontotoc, Prentiss and 3 more3 hr
Jul 22, 1:42 PM CDTMesoscale DiscussionSPCAdams, Amite, Claiborne, Copiah, Covington, Forrest and 18 more2 hr
Jul 22, 2:30 PM CDTSevere Thunderstorm WatchSPCAdams, Amite, Claiborne, Clarke, Copiah, Covington and 29 more6 hr
Jul 22, 2:40 PM CDTSevere Thunderstorm WatchSPCGeorge, Greene, Jackson, Wayne5 hr
Jul 22, 6:21 PM CDTMesoscale DiscussionSPCAdams, Amite, Claiborne, Copiah, Covington, Forrest and 24 more54 min

Nearby

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