Alert archive / Arkansas / Mesoscale Discussions in 2004

Mesoscale Discussion 442

April 23, 200431 counties in Arkansas; 4 counties in Missouri; 11 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 23, 2004, 12:54 AM CDT for 31 counties in Arkansas; 4 counties in Missouri; 11 counties in Oklahoma. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
Apr 23, 2004, 12:54 AM CDT (05:54 UTC)
Expired
Apr 23, 2004, 2:30 AM CDT
In force
96 min
Issued by
the Storm Prediction Center
All 46 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Cleburne County, AR, Conway County, AR, Crawford County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Johnson County, AR, Lawrence County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Perry County, AR, Pope County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Howell County, MO, Oregon County, MO, Ozark County, MO, Taney County, MO, Adair County, OK, Cherokee County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, Muskogee County, OK, Rogers County, OK, Sequoyah County, OK, Wagoner County, OK

The radar

The Western Arkansas radar (KSRX), 57 km from the middle of the area, began a volume at 05:56 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 nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 5.9 hours before the alert went out and 153 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 2004-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 112 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 2004-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 336 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
112 J/kg
Mixed-layer CIN
-140 J/kg
Mixed-layer LCL
785 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
336 m²/s²
0-3 km storm-relative helicity
543 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.1

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
Apr 22, 7:10 PM CDTMesoscale DiscussionSPCBoone, Franklin, Howard, Johnson, Logan, Madison and 5 more35 min
Apr 22, 7:50 PM CDTTornado WatchSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 10 more4 hr
Apr 22, 9:50 PM CDTSevere Thunderstorm WatchSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 25 more6 hr
Apr 22, 10:52 PM CDTMesoscale DiscussionSPCConway, Pope, Searcy, Stone, Van Buren53 min
Apr 22, 11:25 PM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Mississippi and 1 more65 min
Apr 22, 11:40 PM CDTSevere Thunderstorm WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 4 more6 hr
Apr 23, 3:12 AM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 5 more93 min
Apr 23, 7:33 AM CDTMesoscale DiscussionSPCCraighead, Crittenden, Cross, Jackson, Lee, Poinsett and 2 more87 min
Apr 23, 10:37 AM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Fulton, Izard and 3 more113 min
Apr 23, 2:10 PM CDTSevere Thunderstorm WatchSPCBenton, Crawford, Sebastian, Washington6 hr
Apr 23, 6:01 PM CDTMesoscale DiscussionSPCCrawford, Scott, Sebastian59 min
Apr 23, 12:51 PM CDTMesoscale DiscussionSPCBarton, Bates, Benton, Camden, Cedar, Dade and 12 more114 min
Apr 23, 3:05 PM CDTSevere Thunderstorm WatchSPCBarry, Barton, Cedar, Dade, Greene, Hickory and 8 more5 hr
Apr 22, 8:00 PM CDTMesoscale DiscussionSPCLove60 min
Apr 22, 11:47 PM CDTMesoscale DiscussionSPCBeaver, Custer, Dewey, Ellis, Harper, Major and 3 more58 min
Apr 23, 10:10 AM CDTMesoscale DiscussionSPCBeaver, Beckham, Blaine, Custer, Dewey, Ellis and 11 more3 hr
Apr 23, 12:15 PM CDTTornado WatchSPCCarter, Cotton, Jefferson, Tillman6 hr
Apr 23, 1:46 PM CDTMesoscale DiscussionSPCAdair, Caddo, Canadian, Carter, Cherokee, Cleveland and 29 more119 min
Apr 23, 3:05 PM CDTMesoscale DiscussionSPCCotton, Garvin, Murray, Pontotoc, Stephens85 min
Apr 23, 4:40 PM CDTMesoscale DiscussionSPCCarter, Jefferson65 min
Apr 23, 5:30 PM CDTSevere Thunderstorm WatchSPCCarter, Cotton, Jefferson, Johnston, Love, Marshall and 3 more7 hr

Nearby

Mesoscale Discussions in Arkansas, 2004Mesoscale Discussions in Oklahoma, 2004Mesoscale Discussions in Missouri, 2004Every mesoscale discussion in 2004

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.