Alert archive / Oklahoma / Mesoscale Discussions in 2006

Mesoscale Discussion 644

April 24, 20067 counties in Kansas; 25 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 24, 2006, 6:17 PM CDT for 7 counties in Kansas; 25 counties in Oklahoma. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued
Apr 24, 2006, 6:17 PM CDT (23:17 UTC)
Expired
Apr 24, 2006, 7:45 PM CDT
In force
88 min
Issued by
the Storm Prediction Center
All 32 counties

Butler County, KS, Cowley County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Sedgwick County, KS, Sumner County, KS, Alfalfa County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Kay County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Murray County, OK, Noble County, OK, Oklahoma County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Stephens County, OK

The radar

The Vance AFB radar (KVNX), 40 km from the middle of the area, began a volume at 23:20 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 12:00Z, 11.3 hours before the alert went out and 40 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 12:00Z on 2006-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1169 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 12:00Z on 2006-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 332 square meters per square second.193958Sfc1 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
1169 J/kg
Mixed-layer CIN
-204 J/kg
Mixed-layer LCL
869 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
332 m²/s²
0-3 km storm-relative helicity
405 m²/s²
Significant tornado parameter
0.0
Supercell composite
16.8

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, 7:58 PM CDTMesoscale DiscussionSPCAnderson, Coffey, Dickinson, Franklin, Geary, Lincoln and 8 more92 min
Apr 23, 9:26 PM CDTMesoscale DiscussionSPCAnderson, Coffey, Dickinson, Franklin, Geary, Lincoln and 8 more64 min
Apr 23, 9:47 PM CDTMesoscale DiscussionSPCAnderson, Coffey, Dickinson, Franklin, Geary, Lincoln and 8 more88 min
Apr 23, 10:10 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Rawlins, Sheridan, Thomas95 min
Apr 23, 10:35 PM CDTSevere Thunderstorm WatchSPCCheyenne, Decatur, Gove, Graham, Logan, Norton and 5 more4 hr
Apr 24, 1:27 AM CDTMesoscale DiscussionSPCAllen, Barber, Butler, Chase, Chautauqua, Cowley and 16 more2 hr
Apr 24, 2:05 AM CDTMesoscale DiscussionSPCCheyenne, Decatur, Graham, Logan, Norton, Rawlins and 4 more85 min
Apr 24, 7:32 AM CDTMesoscale DiscussionSPCAllen, Butler, Chautauqua, Cowley, Elk, Greenwood and 5 more88 min
Apr 24, 7:49 AM CDTSevere Thunderstorm WatchSPCAllen, Butler, Chautauqua, Cowley, Elk, Greenwood and 5 more5 hr
Apr 24, 1:13 PM CDTMesoscale DiscussionSPCBarber, Comanche2 hr
Apr 24, 1:36 PM CDTTornado WatchSPCBarber, Butler, Comanche, Cowley, Harper, Harvey and 9 more7 hr
Apr 24, 3:18 PM CDTMesoscale DiscussionSPCAnderson, Atchison, Brown, Chase, Clay, Cloud and 26 more117 min
Apr 24, 5:30 PM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Bourbon, Chase, Chautauqua, Cherokee and 19 more7 hr
Apr 24, 11:08 AM CDTMesoscale DiscussionSPCCreek, Kay, Mayes, Noble, Nowata, Osage and 5 more97 min
Apr 24, 12:32 PM CDTSevere Thunderstorm WatchSPCAdair, Cherokee, Craig, Creek, Delaware, Mayes and 10 more5 hr
Apr 24, 2:14 PM CDTMesoscale DiscussionSPCAdair, Cherokee, Haskell, LeFlore, Muskogee, Sequoyah and 1 more61 min
Apr 24, 2:29 PM CDTSevere Thunderstorm WatchSPCHaskell, LeFlore, Sequoyah5 hr
Apr 24, 3:09 PM CDTMesoscale DiscussionSPCAlfalfa, Garfield66 min
Apr 24, 6:08 PM CDTMesoscale DiscussionSPCLeFlore67 min

Nearby

Mesoscale Discussions in Oklahoma, 2006Mesoscale Discussions in Kansas, 2006Every mesoscale discussion in 2006

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.