Alert archive / Kansas / Mesoscale Discussions in 2017

Mesoscale Discussion 676

May 9, 20174 counties in Colorado; 22 counties in Kansas; Hitchcock County, Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 9, 2017, 8:32 PM MDT for 4 counties in Colorado; 22 counties in Kansas; Hitchcock County, Nebraska. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued
May 9, 2017, 8:32 PM MDT (02:32 UTC)
Expired
May 9, 2017, 9:30 PM MDT
In force
58 min
Issued by
the Storm Prediction Center
All 27 counties

Baca County, CO, Cheyenne County, CO, Kiowa County, CO, Prowers County, CO, Cheyenne County, KS, Decatur County, KS, Finney County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Morton County, KS, Norton County, KS, Rawlins County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Stanton County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Hitchcock County, NE

The radar

The Goodland radar (KGLD), 109 km from the middle of the area, began a volume at 02:33 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

Dodge City, (KDDC), launched 00:00Z, 2.5 hours before the alert went out and 154 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, Dodge City, at 00:00Z on 2017-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 616 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dodge City, at 00:00Z on 2017-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
616 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
1750 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

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
May 10, 1:04 PM MDTMesoscale DiscussionSPCBent, Costilla, Las Animas, Otero2 hr
May 9, 6:15 PM MDTMesoscale DiscussionSPCCloud, Jewell, Marshall, Mitchell, Osborne, Phillips and 4 more2 hr
May 10, 12:29 AM MDTMesoscale DiscussionSPCCheyenne, Decatur, Ellis, Gove, Graham, Jewell and 12 more61 min
May 10, 5:04 AM MDTMesoscale DiscussionSPCBarber, Comanche, Harper, Kingman116 min
May 10, 11:39 AM MDTMesoscale DiscussionSPCBourbon, Franklin, Johnson, Leavenworth, Linn, Miami and 1 more3 hr
May 10, 2:11 PM MDTMesoscale DiscussionSPCGrant, Haskell, Morton, Seward, Stevens94 min
May 10, 2:37 PM MDTMesoscale DiscussionSPCAllen, Bourbon, Butler, Chautauqua, Cherokee, Cowley and 10 more113 min
May 10, 5:30 PM MDTSevere Thunderstorm WatchSPCBourbon, Cherokee, Crawford2 hr

Nearby

Mesoscale Discussions in Kansas, 2017Mesoscale Discussions in Colorado, 2017Mesoscale Discussions in Nebraska, 2017Every mesoscale discussion in 2017

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.