Alert archive / Oklahoma / Mesoscale Discussions in 2007

Mesoscale Discussion 925

May 30, 20079 counties in Kansas; 11 counties in Oklahoma; 7 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 30, 2007, 1:52 AM CDT for 9 counties in Kansas; 11 counties in Oklahoma; 7 counties in Texas. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
May 30, 2007, 1:52 AM CDT (06:52 UTC)
Expired
May 30, 2007, 3:15 AM CDT
In force
83 min
Issued by
the Storm Prediction Center
All 27 counties

Barber County, KS, Comanche County, KS, Harper County, KS, Kingman County, KS, Kiowa County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Stafford County, KS, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Major County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Armstrong County, TX, Carson County, TX, Collingsworth County, TX, Donley County, TX, Gray County, TX, Hemphill County, TX, Wheeler County, TX

The radar

The Vance AFB radar (KVNX), 133 km from the middle of the area, began a volume at 06:55 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

Dodge City, (KDDC), launched 00:00Z, 6.9 hours before the alert went out and 146 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 2007-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1362 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 2007-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939Sfc1 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
1362 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
1343 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
142 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

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 29, 7:08 PM CDTSevere Thunderstorm WatchSPCBarber, Clark, Comanche, Edwards, Ellis, Finney and 30 more7 hr
May 29, 8:22 PM CDTSevere Thunderstorm WatchSPCOsborne, Phillips, Rooks, Smith5 hr
May 29, 9:02 PM CDTMesoscale DiscussionSPCClark, Comanche, Edwards, Ellis, Finney, Ford and 27 more118 min
May 29, 10:43 PM CDTMesoscale DiscussionSPCBarton, Clark, Clay, Cloud, Comanche, Dickinson and 32 more92 min
May 29, 11:03 PM CDTSevere Thunderstorm WatchSPCBarton, Ellsworth, Harper, Kingman, Lincoln, McPherson and 4 more4 hr
May 30, 4:11 AM CDTMesoscale DiscussionSPCCaddo, Canadian, Comanche, Cotton, Grady, Greer and 7 more94 min
May 30, 4:50 AM CDTSevere Thunderstorm WatchSPCBryan, Carter, Comanche, Cotton, Garvin, Grady and 9 more6 hr
May 30, 7:42 AM CDTMesoscale DiscussionSPCBryan, Carter, Cotton, Garvin, Jefferson, Johnston and 5 more93 min
May 29, 7:53 PM CDTMesoscale DiscussionSPCBell, Brown, Burnet, Coleman, Coryell, Lampasas and 5 more2 hr
May 30, 8:59 AM CDTSevere Thunderstorm WatchSPCAnderson, Angelina, Austin, Bell, Bosque, Bowie and 63 more5 hr
May 30, 11:07 AM CDTMesoscale DiscussionSPCAnderson, Angelina, Austin, Brazos, Burleson, Camp and 45 more83 min
May 30, 1:23 PM CDTMesoscale DiscussionSPCAngelina, Chambers, Hardin, Jasper, Jefferson, Liberty and 10 more97 min
May 30, 6:13 PM CDTMesoscale DiscussionSPCBandera, Brown, Callahan, Coleman, Comanche, Concho and 18 more92 min

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.