Alert archive / Oklahoma / Mesoscale Discussions in 2007

Mesoscale Discussion 878

May 24, 20077 counties in Kansas; 17 counties in Oklahoma; 6 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 24, 2007, 2:06 AM CDT for 7 counties in Kansas; 17 counties in Oklahoma; 6 counties in Texas. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued
May 24, 2007, 2:06 AM CDT (07:06 UTC)
Expired
May 24, 2007, 3:00 AM CDT
In force
54 min
Issued by
the Storm Prediction Center
All 30 counties

Barber County, KS, Comanche County, KS, Harper County, KS, Kingman County, KS, Kiowa County, KS, Pratt County, KS, Sumner County, KS, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Canadian County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Greer County, OK, Kay County, OK, Kingfisher County, OK, Major County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Carson County, TX, Collingsworth County, TX, Gray County, TX, Hemphill County, TX, Roberts County, TX, Wheeler County, TX

The radar

The Vance AFB radar (KVNX), 128 km from the middle of the area, began a volume at 07:07 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

Dodge City, (KDDC), launched 00:00Z, 7.1 hours before the alert went out and 164 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, Dodge City, at 00:00Z on 2007-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 879 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, Dodge City, at 00:00Z on 2007-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 227 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
879 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
1377 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
227 m²/s²
0-3 km storm-relative helicity
418 m²/s²
Significant tornado parameter
1.2
Supercell composite
5.4

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 23, 7:10 PM CDTMesoscale DiscussionSPCAtchison, Barton, Brown, Butler, Chase, Clay and 36 more35 min
May 23, 7:48 PM CDTSevere Thunderstorm WatchSPCBarton, Butler, Chase, Clay, Cloud, Dickinson and 22 more7 hr
May 23, 10:12 PM CDTMesoscale DiscussionSPCClark, Comanche, Edwards, Finney, Ford, Grant and 12 more63 min
May 23, 10:48 PM CDTTornado WatchSPCBarber, Clark, Comanche, Kiowa, Meade, Pratt and 1 more4 hr
May 23, 11:29 PM CDTMesoscale DiscussionSPCBarton, Butler, Chase, Clay, Cloud, Dickinson and 25 more91 min
May 24, 1:51 AM CDTMesoscale DiscussionSPCAtchison, Brown, Butler, Chase, Clay, Coffey and 28 more54 min
May 24, 2:41 AM CDTSevere Thunderstorm WatchSPCAnderson, Brown, Butler, Chase, Coffey, Cowley and 25 more3 hr
May 24, 5:19 AM CDTMesoscale DiscussionSPCAtchison, Brown, Butler, Chase, Coffey, Cowley and 16 more56 min
May 24, 10:04 AM CDTMesoscale DiscussionSPCCarter, Coal, Garvin, Jefferson, Johnston, Love and 4 more116 min
May 24, 2:49 PM CDTMesoscale DiscussionSPCBrown, Callahan, Coke, Coleman, Comanche, Concho and 18 more2 hr

Nearby

Mesoscale Discussions in Oklahoma, 2007Mesoscale Discussions in Kansas, 2007Mesoscale Discussions in Texas, 2007Every mesoscale discussion in 2007

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.