Alert archive / Colorado / Mesoscale Discussions in 2005

Mesoscale Discussion 987

May 24, 200520 counties in Colorado; Cheyenne County, Sherman County, Wallace County, Kansas; Chase County, Dundy County, Perkins County, Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 24, 2005, 12:03 PM MDT for 20 counties in Colorado; Cheyenne County, Sherman County, Wallace County, Kansas; Chase County, Dundy County, Perkins County, Nebraska. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued
May 24, 2005, 12:03 PM MDT (18:03 UTC)
Expired
May 24, 2005, 2:00 PM MDT
In force
117 min
Issued by
the Storm Prediction Center
All 26 counties

Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Cheyenne County, CO, Crowley County, CO, Denver County, CO, Douglas County, CO, El Paso County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Pueblo County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, KS, Sherman County, KS, Wallace County, KS, Chase County, NE, Dundy County, NE, Perkins County, NE

The radar

The Goodland radar (KGLD), 106 km from the middle of the area, began a volume at 18:05 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 12:00Z, 6.1 hours before the alert went out and 54 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 12:00Z on 2005-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 73 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2005-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
73 J/kg
Mixed-layer CIN
-398 J/kg
Mixed-layer LCL
1712 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
22 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

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, 8:38 PM MDTMesoscale DiscussionSPCBaca, Bent, Cheyenne, Kiowa, Kit Carson, Lincoln and 2 more67 min
May 24, 12:45 PM MDTTornado WatchSPCAdams, Arapahoe, Broomfield, Denver, Douglas, Elbert and 8 more7 hr
May 24, 1:10 PM MDTTornado WatchSPCAdams, Arapahoe, Broomfield, Denver, Douglas, Elbert and 8 more7 hr
May 24, 1:45 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Cheyenne, Crowley, El Paso, Huerfano and 6 more6 hr
May 24, 4:13 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Broomfield, Denver, Douglas, Elbert and 8 more92 min
May 23, 9:55 PM MDTSevere Thunderstorm WatchSPCBarber, Barton, Clark, Comanche, Edwards, Ellis and 28 more6 hr
May 24, 12:14 AM MDTMesoscale DiscussionSPCBarber, Barton, Chautauqua, Clark, Comanche, Cowley and 25 more91 min
May 24, 1:35 AM MDTSevere Thunderstorm WatchSPCButler, Chautauqua, Cherokee, Cowley, Elk, Harvey and 5 more7 hr
May 24, 4:40 AM MDTMesoscale DiscussionSPCButler, Chautauqua, Cherokee, Cowley, Elk, Harvey and 5 more95 min
May 24, 8:13 AM MDTMesoscale DiscussionSPCChautauqua, Cherokee, Elk, Labette, Montgomery, Wilson32 min
May 24, 4:30 PM MDTSevere Thunderstorm WatchSPCCheyenne, Decatur, Gove, Graham, Greeley, Lane and 11 more7 hr
May 24, 2:07 PM MDTMesoscale DiscussionSPCAntelope, Blaine, Boone, Boyd, Cedar, Chase and 20 more53 min
May 24, 2:35 PM MDTSevere Thunderstorm WatchSPCAntelope, Blaine, Boone, Boyd, Brown, Buffalo and 33 more7 hr
May 24, 5:13 PM MDTMesoscale DiscussionSPCAntelope, Blaine, Boone, Boyd, Brown, Buffalo and 33 more2 hr

Nearby

Mesoscale Discussions in Colorado, 2005Mesoscale Discussions in Kansas, 2005Mesoscale Discussions in Nebraska, 2005Every mesoscale discussion in 2005

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.