Alert archive / Oklahoma / Mesoscale Discussions in 2004

Mesoscale Discussion 927

May 26, 20044 states

The Storm Prediction Center issued this mesoscale discussion at May 26, 2004, 8:29 PM CDT for 4 states. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
May 26, 2004, 8:29 PM CDT (01:29 UTC)
Expired
May 26, 2004, 10:00 PM CDT
In force
91 min
Issued by
the Storm Prediction Center
All 51 counties

Benton County, AR, Madison County, AR, Washington County, AR, McDonald County, MO, Adair County, OK, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cherokee County, OK, Cleveland County, OK, Comanche County, OK, Craig County, OK, Creek County, OK, Custer County, OK, Delaware County, OK, Dewey County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, Mayes County, OK, McClain County, OK, Noble County, OK, Nowata County, OK, Okfuskee County, OK, Oklahoma County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Roger Mills County, OK, Rogers County, OK, Seminole County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Childress County, TX

The radar

The Norman radar (KTLX), 29 km from the middle of the area, began a volume at 01:29 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

Norman, OK (KOUN), launched 00:00Z, 1.5 hours before the alert went out and 45 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, Norman, OK at 00:00Z on 2004-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2661 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, Norman, OK at 00:00Z on 2004-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 177 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
2661 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1229 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
177 m²/s²
0-3 km storm-relative helicity
179 m²/s²
Significant tornado parameter
2.0
Supercell composite
9.6

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 26, 7:57 PM CDTMesoscale DiscussionSPCBarry, Barton, Benton, Bollinger, Butler, Camden and 46 more63 min
May 26, 8:30 PM CDTTornado WatchSPCBarton, Bates, Benton, Camden, Cedar, Dade and 15 more6 hr
May 26, 8:55 PM CDTTornado WatchSPCBollinger, Cape Girardeau, Crawford, Dent, Franklin, Gasconade and 8 more5 hr
May 26, 9:36 PM CDTMesoscale DiscussionSPCAudrain, Callaway, Lincoln, Marion, Monroe, Montgomery and 5 more54 min
May 26, 11:14 PM CDTMesoscale DiscussionSPCBarton, Bates, Benton, Bollinger, Boone, Callaway and 49 more2 hr
May 26, 11:40 PM CDTSevere Thunderstorm WatchSPCCass, Clay, Cooper, Henry, Howard, Jackson and 6 more5 hr
May 27, 1:16 AM CDTMesoscale DiscussionSPCCarroll, Cass, Clay, Cooper, Howard, Jackson and 6 more119 min
May 27, 1:50 AM CDTTornado WatchSPCBarton, Camden, Cedar, Christian, Dade, Dallas and 15 more4 hr
May 27, 3:27 AM CDTMesoscale DiscussionSPCCedar, Christian, Dade, Dallas, Douglas, Greene and 12 more2 hr
May 27, 3:55 AM CDTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, Caldwell, Carroll, Cass and 14 more95 min
May 27, 11:10 AM CDTMesoscale DiscussionSPCAdair, Audrain, Chariton, Clark, Daviess, Gentry and 20 more2 hr
May 27, 11:55 AM CDTSevere Thunderstorm WatchSPCAdair, Atchison, Clark, Gentry, Grundy, Harrison and 11 more6 hr
May 27, 1:52 PM CDTMesoscale DiscussionSPCAdair, Andrew, Audrain, Boone, Buchanan, Caldwell and 32 more113 min
May 27, 2:25 PM CDTSevere Thunderstorm WatchSPCAndrew, Audrain, Boone, Buchanan, Caldwell, Callaway and 36 more7 hr
May 27, 3:37 PM CDTMesoscale DiscussionSPCAudrain, Boone, Caldwell, Callaway, Carroll, Chariton and 28 more113 min
May 27, 5:01 PM CDTMesoscale DiscussionSPCAndrew, Audrain, Benton, Boone, Buchanan, Caldwell and 53 more89 min
May 26, 8:54 PM CDTMesoscale DiscussionSPCGreer, Harmon, Jackson66 min
May 27, 10:29 AM CDTMesoscale DiscussionSPCGreer, Harmon, Jackson, Tillman2 hr
May 27, 6:10 AM CDTMesoscale DiscussionSPCAndrews, Borden, Coke, Crane, Crockett, Crosby and 25 more3 hr
May 27, 2:45 PM CDTSevere Thunderstorm WatchSPCBrown, Callahan, Coke, Coleman, Comanche, Concho and 29 more6 hr
May 27, 4:04 PM CDTMesoscale DiscussionSPCBosque, Brown, Callahan, Coke, Coleman, Collin and 50 more116 min
May 27, 5:35 PM CDTSevere Thunderstorm WatchSPCBosque, Collin, Cooke, Dallas, Delta, Denton and 22 more5 hr

Nearby

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