Alert archive / Oklahoma / Mesoscale Discussions in 2004

Mesoscale Discussion 1372

June 21, 20044 states

The Storm Prediction Center issued this mesoscale discussion at Jun 21, 2004, 7:52 PM CDT for 4 states. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
Jun 21, 2004, 7:52 PM CDT (00:52 UTC)
Expired
Jun 21, 2004, 9:15 PM CDT
In force
83 min
Issued by
the Storm Prediction Center
All 51 counties

Benton County, AR, Allen County, KS, Bourbon County, KS, 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, Woodson County, KS, Barry County, MO, Barton County, MO, Cedar County, MO, Dade County, MO, Greene County, MO, Hickory County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Polk County, MO, St. Clair County, MO, Stone County, MO, Vernon County, MO, Alfalfa County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Garfield County, OK, Grant County, OK, Kay County, OK, Kingfisher County, OK, Logan County, OK, Major County, OK, Mayes County, OK, Noble County, OK, Nowata County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK, Woods County, OK

The radar

The Tulsa radar (KINX), 102 km from the middle of the area, began a volume at 00:54 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, 0.9 hours before the alert went out and 163 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 2004-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 241 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, Lamont, OK at 00:00Z on 2004-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -11 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
241 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1538 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-11 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

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
Jun 22, 10:27 AM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Columbia, Lafayette, Miller and 3 more2 hr
Jun 22, 3:10 PM CDTMesoscale DiscussionSPCAshley, Union95 min
Jun 21, 8:05 PM CDTSevere Thunderstorm WatchSPCBeckham, Greer, Harmon, Jackson7 hr
Jun 21, 10:17 PM CDTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Canadian, Custer, Dewey and 9 more88 min
Jun 21, 10:25 PM CDTSevere Thunderstorm WatchSPCBlaine, Canadian, Custer, Dewey, Garfield, Kingfisher and 5 more5 hr
Jun 21, 11:27 PM CDTMesoscale DiscussionSPCBlaine, Canadian, Carter, Cotton, Custer, Dewey and 10 more93 min
Jun 21, 11:44 PM CDTMesoscale DiscussionSPCBeckham, Greer, Harmon, Jackson91 min
Jun 22, 2:48 AM CDTMesoscale DiscussionSPCComanche, Cotton, Tillman27 min
Jun 22, 4:05 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Coal, Haskell, Hughes and 10 more2 hr

Nearby

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