Alert archive / Colorado / Mesoscale Discussions in 2007

Mesoscale Discussion 694

May 4, 20075 counties in Colorado; Cheyenne County, Sherman County, Wallace County, Kansas; 4 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 4, 2007, 10:28 PM MDT for 5 counties in Colorado; Cheyenne County, Sherman County, Wallace County, Kansas; 4 counties in Nebraska. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued
May 4, 2007, 10:28 PM MDT (04:28 UTC)
Expired
May 5, 2007, 12:00 AM MDT
In force
92 min
Issued by
the Storm Prediction Center

Counties Kit Carson County, CO, Lincoln County, CO, Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Cheyenne County, KS, Sherman County, KS, Wallace County, KS, Chase County, NE, Dundy County, NE, Hayes County, NE, Perkins County, NE

The radar

The Goodland radar (KGLD), 64 km from the middle of the area, began a volume at 04:31 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

Denver, CO (KDNR), launched 00:00Z, 4.5 hours before the alert went out and 110 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, Denver, CO at 00:00Z on 2007-05-05Temperature 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 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2007-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 square meters per square second.1939587897Sfc1 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
1202 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
761 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 4, 7:29 PM MDTMesoscale DiscussionSPCKit Carson, Lincoln, Logan, Phillips, Washington, Yuma91 min
May 4, 6:26 PM MDTTornado WatchSPCDecatur, Gove, Graham, Jewell, Mitchell, Norton and 5 more7 hr
May 4, 7:06 PM MDTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Edwards, Ford and 6 more84 min
May 4, 8:41 PM MDTMesoscale DiscussionSPCDecatur, Graham, Norton, Osborne, Phillips, Rooks and 2 more94 min
May 4, 9:34 PM MDTMesoscale DiscussionSPCClay, Dickinson, Geary, Marion, Marshall, Morris and 2 more56 min
May 4, 10:10 PM MDTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Edwards, Ellsworth and 12 more95 min
May 5, 12:23 AM MDTMesoscale DiscussionSPCBarton, Clay, Cloud, Decatur, Ellis, Ellsworth and 15 more67 min
May 5, 12:30 AM MDTTornado WatchSPCClay, Cloud, Dickinson, Ellsworth, Jewell, Lincoln and 10 more7 hr
May 5, 2:00 AM MDTMesoscale DiscussionSPCBarton, Clay, Cloud, Dickinson, Ellsworth, Jewell and 12 more90 min
May 5, 5:59 AM MDTMesoscale DiscussionSPCRepublic, Washington61 min
May 5, 7:52 AM MDTMesoscale DiscussionSPCBarber, Barton, Clark, Cloud, Comanche, Decatur and 40 more53 min
May 5, 8:51 AM MDTTornado Watch PDSSPCBarton, Cheyenne, Decatur, Ellis, Ellsworth, Gove and 21 more12 hr
May 5, 10:32 AM MDTMesoscale DiscussionSPCNorton, Phillips, Smith88 min
May 5, 10:57 AM MDTMesoscale DiscussionSPCBarber, Clark, Comanche, Edwards, Harper, Kingman and 3 more93 min
May 5, 11:15 AM MDTTornado Watch PDSSPCBarber, Clark, Comanche, Edwards, Finney, Ford and 16 more10 hr
May 5, 1:32 PM MDTMesoscale DiscussionSPCClay, Cloud, Dickinson, Geary, Marshall, Morris and 5 more28 min
May 5, 1:42 PM MDTTornado Watch PDSSPCBrown, Chase, Clay, Cloud, Dickinson, Geary and 15 more7 hr
May 5, 2:26 PM MDTMesoscale DiscussionSPCBarton, Clark, Comanche, Edwards, Ellis, Ford and 14 more94 min
May 5, 5:16 PM MDTMesoscale DiscussionSPCBarber, Barton, Clark, Cloud, Comanche, Edwards and 14 more59 min
May 4, 7:49 PM MDTMesoscale DiscussionSPCAntelope, Cedar, Dixon, Knox, Madison, Pierce and 1 more56 min
May 4, 8:22 PM MDTTornado WatchSPCAntelope, Boone, Cedar, Knox, Pierce11 hr
May 5, 9:35 AM MDTMesoscale DiscussionSPCAntelope, Boyd, Brown, Burt, Cedar, Cherry and 13 more85 min
May 5, 9:55 AM MDTTornado WatchSPCAntelope, Boyd, Brown, Cedar, Dakota, Dixon and 7 more6 hr
May 5, 12:01 PM MDTMesoscale DiscussionSPCBoyd, Cedar, Dakota, Dixon, Holt, Knox and 2 more89 min
May 5, 12:45 PM MDTMesoscale DiscussionSPCArthur, Box Butte, Cherry, Dawes, Deuel, Garden and 8 more2 hr
May 5, 3:09 PM MDTMesoscale DiscussionSPCBoyd, Cedar, Dakota, Dixon, Holt, Keya Paha and 4 more96 min
May 5, 3:33 PM MDTTornado Watch PDSSPCAntelope, Boyd, Brown, Cedar, Cherry, Dakota and 8 more6 hr

Nearby

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