Alert archive / Kansas / Mesoscale Discussions in 2005

Mesoscale Discussion 820

May 11, 200513 counties in Colorado; 33 counties in Kansas; 6 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 11, 2005, 1:36 PM MDT for 13 counties in Colorado; 33 counties in Kansas; 6 counties in Nebraska. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued
May 11, 2005, 1:36 PM MDT (19:36 UTC)
Expired
May 11, 2005, 3:30 PM MDT
In force
114 min
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm potential
All 52 counties

Adams County, CO, Arapahoe County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, El Paso County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Prowers County, CO, Washington County, CO, Yuma 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, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Morton County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Rawlins County, KS, Rooks County, KS, Scott County, KS, Seward County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Stanton County, KS, Stevens County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Dundy County, NE, Franklin County, NE, Furnas County, NE, Harlan County, NE, Hitchcock County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 29 km from the middle of the area, began a volume at 19:36 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

Denver, CO (KDNR), launched 12:00Z, 7.6 hours before the alert went out and 155 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 2005-05-11Temperature 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 2005-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.19395878Sfc1 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
538 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
68 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 10, 6:00 PM MDTSevere Thunderstorm WatchSPCAdams, Arapahoe, Denver, Logan, Morgan, Phillips and 4 more7 hr
May 11, 2:10 PM MDTTornado WatchSPCCheyenne, Kit Carson, Prowers, Washington, Yuma7 hr
May 11, 2:55 PM MDTSevere Thunderstorm WatchSPCPhillips, Sedgwick8 hr
May 11, 4:13 PM MDTMesoscale DiscussionSPCCheyenne, Kiowa, Kit Carson, Prowers, Washington, Yuma92 min
May 11, 7:41 AM MDTMesoscale DiscussionSPCAtchison, Brown, Clay, Doniphan, Douglas, Geary and 12 more2 hr
May 11, 10:45 AM MDTTornado WatchSPCAtchison, Brown, Doniphan, Jackson, Jefferson, Leavenworth and 6 more7 hr
May 11, 1:55 PM MDTTornado WatchSPCClay, Cloud, Dickinson, Ellis, Geary, Jewell and 11 more7 hr
May 11, 2:41 PM MDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jackson, Jefferson, Leavenworth and 4 more94 min
May 11, 3:50 PM MDTSevere Thunderstorm WatchSPCJohnson, Linn, Miami6 hr
May 11, 3:53 PM MDTMesoscale DiscussionSPCClay, Cloud, Dickinson, Ellis, Geary, Jewell and 11 more97 min
May 11, 4:25 PM MDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Douglas, Franklin, Jackson and 13 more2 hr
May 11, 5:45 PM MDTSevere Thunderstorm WatchSPCBrown, Jackson, Jefferson, Marshall, Nemaha, Pottawatomie and 1 more7 hr
May 10, 8:14 PM MDTMesoscale DiscussionSPCBurt, Butler, Colfax, Cuming, Dakota, Dodge and 10 more2 hr
May 11, 3:00 PM MDTMesoscale DiscussionSPCAntelope, Arthur, Blaine, Boone, Brown, Buffalo and 25 more2 hr

Nearby

Mesoscale Discussions in Kansas, 2005Mesoscale Discussions in Colorado, 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.