Alert archive / Oklahoma / Mesoscale Discussions in 2004

Mesoscale Discussion 456

April 23, 20044 states

The Storm Prediction Center issued this mesoscale discussion at Apr 23, 2004, 7:05 PM CDT for 4 states. It was in force for 25 min.

The area

The outline as issued.

The facts

Issued
Apr 23, 2004, 7:05 PM CDT (00:05 UTC)
Expired
Apr 23, 2004, 7:30 PM CDT
In force
25 min
Issued by
the Storm Prediction Center
All 78 counties

Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Logan County, AR, Madison County, AR, Scott County, AR, Sebastian County, AR, Washington County, AR, Chautauqua County, KS, Cherokee County, KS, Cowley County, KS, Crawford County, KS, Elk County, KS, Harper County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Sumner County, KS, Wilson County, KS, Barry County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Stone County, MO, Adair County, OK, Alfalfa County, OK, Atoka County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cherokee County, OK, Cleveland County, OK, Coal County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Haskell County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Kay County, OK, Kingfisher County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, Logan County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Noble County, OK, Nowata County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Stephens County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 50 km from the middle of the area, began a volume at 00:06 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

Lamont, OK (KLMN), launched 00:00Z, 0.1 hours before the alert went out and 129 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, Lamont, OK at 00:00Z on 2004-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 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, Lamont, OK at 00:00Z on 2004-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 154 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
3 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
494 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
154 m²/s²
0-3 km storm-relative helicity
631 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.7

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 23, 7:35 PM CDTSevere Thunderstorm WatchSPCBenton, Carroll, Crawford, Franklin, Madison, Scott and 2 more6 hr
Apr 23, 9:43 PM CDTMesoscale DiscussionSPCBenton, Carroll, Crawford, Franklin, Madison, Scott and 2 more62 min
Apr 23, 11:33 PM CDTMesoscale DiscussionSPCBenton, Carroll, Crawford, Franklin, Madison, Scott and 2 more57 min
Apr 24, 1:40 AM CDTSevere Thunderstorm WatchSPCArkansas, Clark, Cleburne, Cleveland, Conway, Crawford and 31 more4 hr
Apr 24, 4:16 AM CDTMesoscale DiscussionSPCArkansas, Clark, Cleveland, Conway, Dallas, Desha and 24 more59 min
Apr 24, 11:50 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clay and 36 more55 min
Apr 24, 12:10 PM CDTTornado WatchSPCArkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 35 more8 hr
Apr 24, 12:35 PM CDTSevere Thunderstorm WatchSPCAshley, Chicot, Columbia, Union6 hr
Apr 24, 3:23 PM CDTMesoscale DiscussionSPCArkansas, Clay, Craighead, Crittenden, Cross, Desha and 18 more67 min
Apr 24, 5:04 PM CDTMesoscale DiscussionSPCChicot26 min
Apr 24, 5:08 PM CDTMesoscale DiscussionSPCClay, Craighead, Greene, Jackson, Lawrence, Mississippi and 2 more2 hr
Apr 24, 6:40 PM CDTTornado WatchSPCClay, Mississippi5 hr
Apr 24, 4:22 PM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Douglas, Franklin, Jackson and 11 more113 min
Apr 23, 7:48 PM CDTMesoscale DiscussionSPCCarter, Cotton, Jefferson, Johnston, Love, Marshall and 3 more87 min
Apr 23, 7:56 PM CDTMesoscale DiscussionSPCAdair, Atoka, Cherokee, Coal, Haskell, Johnston and 4 more2 hr
Apr 23, 9:18 PM CDTMesoscale DiscussionSPCCarter, Coal, Jefferson, Johnston, Love, Marshall and 2 more57 min
Apr 23, 11:08 PM CDTMesoscale DiscussionSPCCarter, Johnston, Love, Marshall, Murray37 min

Nearby

Mesoscale Discussions in Oklahoma, 2004Mesoscale Discussions in Kansas, 2004Mesoscale Discussions in Arkansas, 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.