Alert archive / Kansas / Mesoscale Discussions in 2007

Mesoscale Discussion 933

May 31, 20076 counties in Colorado; 33 counties in Kansas; 15 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 31, 2007, 11:33 AM MDT for 6 counties in Colorado; 33 counties in Kansas; 15 counties in Nebraska. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
May 31, 2007, 11:33 AM MDT (17:33 UTC)
Expired
May 31, 2007, 1:00 PM MDT
In force
87 min
Issued by
the Storm Prediction Center
All 54 counties

Baca County, CO, Bent County, CO, Cheyenne County, CO, Kiowa County, CO, Kit Carson County, CO, Prowers County, CO, Cheyenne County, KS, Decatur County, KS, Ellis County, KS, Finney County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Gray County, KS, Greeley County, KS, Hamilton County, KS, Hodgeman County, KS, Jewell County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Mitchell County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Rawlins County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Stanton County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Adams County, NE, Buffalo County, NE, Clay County, NE, Dawson County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Hall County, NE, Harlan County, NE, Hitchcock County, NE, Kearney County, NE, Nuckolls County, NE, Phelps County, NE, Red Willow County, NE, Webster County, NE

The radar

The Goodland radar (KGLD), 61 km from the middle of the area, began a volume at 17:36 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 5.6 hours before the alert went out and 191 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, N. Platte/Lee Bi, NE at 12:00Z on 2007-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, N. Platte/Lee Bi, NE at 12:00Z on 2007-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1128 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
9 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 31, 12:01 PM MDTTornado WatchSPCAdams, Arapahoe, Bent, Cheyenne, Elbert, Kiowa and 10 more9 hr
May 31, 2:28 PM MDTMesoscale DiscussionSPCBaca, Prowers92 min
May 31, 2:29 PM MDTTornado WatchSPCBaca7 hr
May 31, 4:20 PM MDTSevere Thunderstorm WatchSPCClay, Cloud, Marshall, Nemaha, Pottawatomie, Republic and 2 more6 hr
May 31, 5:38 PM MDTMesoscale DiscussionSPCBarton, Clay, Cloud, Edwards, Ellis, Ellsworth and 27 more97 min
May 31, 5:50 PM MDTTornado WatchSPCBarber, Barton, Comanche, Edwards, Ellsworth, Harper and 14 more6 hr
May 31, 3:56 PM MDTMesoscale DiscussionSPCAntelope, Blaine, Boone, Brown, Burt, Butler and 31 more94 min

Nearby

Mesoscale Discussions in Kansas, 2007Mesoscale Discussions in Nebraska, 2007Mesoscale Discussions in Colorado, 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.