Alert archive / Nebraska / Mesoscale Discussions in 2020

Mesoscale Discussion 1086

July 2, 20207 counties in Kansas; 17 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2020, 7:04 PM CDT for 7 counties in Kansas; 17 counties in Nebraska. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued
Jul 2, 2020, 7:04 PM CDT (00:04 UTC)
Expired
Jul 2, 2020, 9:00 PM CDT
In force
116 min
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch likely
Chance of a watch
80%
All 24 counties

Jewell County, KS, Mitchell County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Rooks County, KS, Smith County, KS, Adams County, NE, Buffalo County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Nuckolls County, NE, Phelps County, NE, Sherman County, NE, Webster County, NE

The radar

The Grand Island radar (KUEX), 45 km from the middle of the area, began a volume at 00:08 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.1 hours before the alert went out and 166 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 00:00Z on 2020-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3485 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 00:00Z on 2020-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
3485 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
1369 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
182 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
Jul 2, 7:38 PM CDTSevere Thunderstorm WatchSPCJewell, Mitchell, Osborne, Phillips, Rooks, Smith4 hr
Jul 2, 9:15 PM CDTMesoscale DiscussionSPCBarton, Dickinson, Ellis, Ellsworth, Graham, Lincoln and 10 more60 min
Jul 2, 9:19 PM CDTSevere Thunderstorm WatchSPCBarton, Chase, Clay, Cloud, Dickinson, Ellsworth and 10 more5 hr
Jul 2, 11:50 PM CDTMesoscale DiscussionSPCButler, Chase, Clay, Dickinson, Geary, Harvey and 8 more85 min
Jul 3, 3:55 PM CDTMesoscale DiscussionSPCStanton2 hr
Jul 2, 8:46 PM CDTMesoscale DiscussionSPCCherry59 min
Jul 3, 1:16 AM CDTMesoscale DiscussionSPCAntelope, Boyd, Burt, Cedar, Cuming, Dakota and 8 more2 hr

Nearby

Mesoscale Discussions in Nebraska, 2020Mesoscale Discussions in Kansas, 2020Every mesoscale discussion in 2020

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.