Alert archive / Kansas / Mesoscale Discussions in 2004

Mesoscale Discussion 680

May 12, 200421 counties in Kansas; 6 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 12, 2004, 11:55 PM CDT for 21 counties in Kansas; 6 counties in Oklahoma. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 12, 2004, 11:55 PM CDT (04:55 UTC)
Expired
May 13, 2004, 2:00 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 27 counties

Allen County, KS, Anderson County, KS, Barber County, KS, Butler County, KS, Chautauqua County, KS, Coffey County, KS, Cowley County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Greenwood County, KS, Harper County, KS, Kingman County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Osage County, KS, Sedgwick County, KS, Sumner County, KS, Wilson County, KS, Woodson County, KS, Alfalfa County, OK, Garfield County, OK, Grant County, OK, Kay County, OK, Nowata County, OK, Osage County, OK

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 4.9 hours before the alert went out and 104 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 2004-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4023 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 2004-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 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
4023 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1092 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
227 m²/s²
Significant tornado parameter
3.5
Supercell composite
18.3

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
May 12, 7:08 PM CDTMesoscale DiscussionSPCCheyenne, Finney, Gove, Grant, Gray, Greeley and 11 more67 min
May 12, 9:08 PM CDTMesoscale DiscussionSPCAllen, Anderson, Barber, Barton, Butler, Chase and 41 more37 min
May 12, 9:25 PM CDTTornado WatchSPCAllen, Anderson, Butler, Chase, Chautauqua, Coffey and 22 more7 hr
May 12, 9:37 PM CDTMesoscale DiscussionSPCFinney, Greeley, Hamilton, Kearny, Logan, Scott and 4 more53 min
May 13, 3:12 AM CDTMesoscale DiscussionSPCAllen, Bourbon, Butler, Chase, Chautauqua, Cherokee and 19 more63 min
May 13, 5:01 PM CDTMesoscale DiscussionSPCAllen, Anderson, Butler, Chase, Chautauqua, Coffey and 12 more89 min
May 12, 8:04 PM CDTMesoscale DiscussionSPCBlaine, Caddo, Canadian, Comanche, Cotton, Custer and 7 more86 min
May 13, 10:20 AM CDTMesoscale DiscussionSPCAtoka, Blaine, Caddo, Canadian, Carter, Cleveland and 35 more115 min
May 13, 10:45 AM CDTSevere Thunderstorm WatchSPCAdair, Caddo, Canadian, Carter, Cherokee, Cleveland and 35 more6 hr
May 13, 12:48 PM CDTMesoscale DiscussionSPCAdair, Atoka, Caddo, Canadian, Carter, Cherokee and 41 more117 min
May 13, 2:48 PM CDTMesoscale DiscussionSPCAdair, Carter, Cherokee, Cleveland, Coal, Cotton and 29 more87 min

Nearby

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