Alert archive / Colorado / Mesoscale Discussions in 2018

Mesoscale Discussion 852

June 24, 20188 counties in Colorado; 6 counties in Kansas; 7 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2018, 1:16 AM MDT for 8 counties in Colorado; 6 counties in Kansas; 7 counties in Nebraska. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued
Jun 24, 2018, 1:16 AM MDT (07:16 UTC)
Expired
Jun 24, 2018, 2:15 AM MDT
In force
59 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 21 counties

Cheyenne County, CO, Kit Carson County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Logan County, KS, Rawlins County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Chase County, NE, Deuel County, NE, Dundy County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Perkins County, NE

The radar

The Goodland radar (KGLD), 97 km from the middle of the area, began a volume at 07:19 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 nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 7.3 hours before the alert went out and 51 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 2018-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 131 joules per kilogram.LCLEL10008507005003002001001 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 2018-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 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
131 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
3839 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 24, 12:51 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Logan, Morgan, Phillips, Sedgwick and 3 more84 min
Jun 24, 2:04 PM MDTMesoscale DiscussionSPCBaca, Bent, Crowley, Huerfano, Kiowa, Las Animas and 3 more86 min
Jun 24, 2:54 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Cheyenne, Crowley, El Paso, Huerfano and 7 more6 hr
Jun 24, 4:31 PM MDTMesoscale DiscussionSPCCheyenne, Crowley, Kiowa89 min
Jun 23, 8:32 PM MDTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Edwards, Finney and 26 more118 min
Jun 23, 8:52 PM MDTSevere Thunderstorm WatchSPCBarber, Clark, Comanche, Edwards, Finney, Ford and 15 more7 hr
Jun 24, 12:25 AM MDTMesoscale DiscussionSPCBarber, Comanche, Harper, Kiowa, Pratt95 min
Jun 24, 6:17 AM MDTMesoscale DiscussionSPCClark, Comanche, Grant, Haskell, Meade, Morton and 2 more118 min
Jun 24, 2:28 PM MDTMesoscale DiscussionSPCBurt, Butler, Cass, Colfax, Cuming, Dakota and 16 more62 min

Nearby

Mesoscale Discussions in Colorado, 2018Mesoscale Discussions in Nebraska, 2018Mesoscale Discussions in Kansas, 2018Every mesoscale discussion in 2018

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.