Alert archive / Nebraska / Mesoscale Discussions in 2019

Mesoscale Discussion 653

May 17, 2019Yuma County, Colorado; 13 counties in Kansas; 33 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 17, 2019, 4:45 PM MDT for Yuma County, Colorado; 13 counties in Kansas; 33 counties in Nebraska. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 17, 2019, 4:45 PM MDT (22:45 UTC)
Expired
May 17, 2019, 6:45 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center
All 47 counties

Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Graham County, KS, Greeley County, KS, Logan County, KS, Norton County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Arthur County, NE, Blaine County, NE, Buffalo County, NE, Chase County, NE, Custer County, NE, Dawson County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Furnas County, NE, Garden County, NE, Garfield County, NE, Gosper County, NE, Grant County, NE, Greeley County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Holt County, NE, Hooker County, NE, Keith County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE, Rock County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Wheeler County, NE

The radar

The Goodland radar (KGLD), 149 km from the middle of the area, began a volume at 22:44 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.8 hours before the alert went out and 83 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, N. Platte/Lee Bi, NE at 12:00Z on 2019-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 31 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, N. Platte/Lee Bi, NE at 12:00Z on 2019-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 328 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
31 J/kg
Mixed-layer CIN
-721 J/kg
Mixed-layer LCL
1114 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
328 m²/s²
0-3 km storm-relative helicity
332 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
May 17, 12:14 PM MDTMesoscale DiscussionSPCLogan, Weld2 hr
May 17, 12:54 PM MDTSevere Thunderstorm WatchSPCLogan, Morgan, Phillips, Sedgwick, Washington, Weld6 hr
May 17, 1:59 PM MDTTornado WatchSPCYuma9 hr
May 17, 4:07 PM MDTMesoscale DiscussionSPCLogan, Morgan, Phillips, Sedgwick, Washington, Weld113 min
May 17, 12:55 PM MDTMesoscale DiscussionSPCCheyenne, Decatur, Gove, Logan, Norton, Rawlins and 2 more2 hr
May 16, 6:57 PM MDTSevere Thunderstorm WatchSPCBurt, Cuming, Dodge, Washington6 hr
May 16, 7:06 PM MDTMesoscale DiscussionSPCAntelope, Arthur, Blaine, Boone, Brown, Buffalo and 28 more114 min
May 16, 10:12 PM MDTMesoscale DiscussionSPCBurt, Cuming, Dodge, Washington2 hr
May 17, 3:38 PM MDTSevere Thunderstorm WatchSPCBoyd, Brown, Cherry, Keya Paha, Sheridan7 hr

Nearby

Mesoscale Discussions in Nebraska, 2019Mesoscale Discussions in Kansas, 2019Mesoscale Discussions in Colorado, 2019Every mesoscale discussion in 2019

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.