Alert archive / Wyoming / Mesoscale Discussions in 2008

Mesoscale Discussion 985

May 23, 2008Larimer County, Morgan County, Weld County, Colorado; Kimball County, Nebraska; 4 counties in Wyoming

The Storm Prediction Center issued this mesoscale discussion at May 23, 2008, 12:13 PM MDT for Larimer County, Morgan County, Weld County, Colorado; Kimball County, Nebraska; 4 counties in Wyoming. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued
May 23, 2008, 12:13 PM MDT (18:13 UTC)
Expired
May 23, 2008, 1:45 PM MDT
In force
92 min
Issued by
the Storm Prediction Center

Counties Larimer County, CO, Morgan County, CO, Weld County, CO, Kimball County, NE, Albany County, WY, Goshen County, WY, Laramie County, WY, Platte County, WY

The radar

The Cheyenne radar (KCYS), 20 km from the middle of the area, began a volume at 18:15 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, 6.2 hours before the alert went out and 187 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 2008-05-23Temperature 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 12:00Z on 2008-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 square meters per square second.1939587897117Sfc1 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
974 m above ground
0-6 km bulk shear
87 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
149 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 23, 8:53 AM MDTMesoscale DiscussionSPCLogan, Phillips, Sedgwick, Yuma67 min
May 23, 12:41 PM MDTTornado WatchSPCLarimer, Logan, Morgan, Phillips, Sedgwick, Washington and 1 more6 hr
May 23, 1:15 PM MDTTornado Watch PDSSPCKit Carson, Yuma7 hr
May 23, 5:02 PM MDTMesoscale DiscussionSPCAdams, Broomfield, Denver, Larimer, Logan, Morgan and 5 more58 min
May 23, 5:18 PM MDTMesoscale DiscussionSPCKit Carson, Yuma57 min
May 23, 5:37 PM MDTMesoscale DiscussionSPCLogan, Morgan, Phillips, Sedgwick, Washington, Weld and 1 more23 min
May 22, 7:16 PM MDTMesoscale DiscussionSPCAdams, Buffalo, Chase, Clay, Dawson, Deuel and 25 more29 min
May 22, 8:11 PM MDTTornado WatchSPCAdams, Buffalo, Clay, Dawson, Fillmore, Franklin and 11 more8 hr
May 22, 8:24 PM MDTMesoscale DiscussionSPCArthur, Banner, Blaine, Box Butte, Brown, Cherry and 15 more66 min
May 22, 9:34 PM MDTMesoscale DiscussionSPCBoone, Butler, Cass, Colfax, Dodge, Douglas and 16 more56 min
May 22, 10:43 PM MDTMesoscale DiscussionSPCAdams, Buffalo, Clay, Dawson, Fillmore, Franklin and 14 more62 min
May 23, 1:01 AM MDTMesoscale DiscussionSPCJefferson, Nuckolls, Saline, Thayer89 min
May 23, 4:26 PM MDTMesoscale DiscussionSPCAdams, Boone, Buffalo, Butler, Clay, Colfax and 23 more64 min

Nearby

Mesoscale Discussions in Wyoming, 2008Mesoscale Discussions in Colorado, 2008Mesoscale Discussions in Nebraska, 2008Every mesoscale discussion in 2008

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.