Alert archive / Nebraska / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 343

July 6, 20166 counties in Kansas; 26 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Jul 6, 2016, 9:47 PM CDT for 6 counties in Kansas; 26 counties in Nebraska. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jul 6, 2016, 9:47 PM CDT (02:47 UTC)
Expired
Jul 7, 2016, 3:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 32 counties

Jewell County, KS, Mitchell 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, Fillmore County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Polk County, NE, Sherman County, NE, Thayer County, NE, Valley County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 80 km from the middle of the area, began a volume at 02:46 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
20%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jul 6, 9:48 PM CDTSevere Thunderstorm WarningGIDGreeley, Sherman, Valley42 min
Jul 6, 10:01 PM CDTSevere Thunderstorm WarningGIDFurnas, Gosper44 min
Jul 6, 10:41 PM CDTSevere Thunderstorm WarningGIDFranklin, Furnas, Gosper, Harlan, Kearney, Phelps49 min
Jul 6, 10:42 PM CDTSevere Thunderstorm WarningLBFCuster, Lincoln, Logan20 min
Jul 6, 11:17 PM CDTSevere Thunderstorm WarningGIDBuffalo, Dawson43 min
Jul 6, 11:30 PM CDTSevere Thunderstorm WarningGIDFranklin, Harlan, Kearney, Phelps45 min
Jul 6, 11:35 PM CDTSevere Thunderstorm WarningGIDBuffalo, Dawson40 min
Jul 7, 12:08 AM CDTSevere Thunderstorm WarningGIDAdams, Buffalo, Franklin, Hall, Kearney, Webster52 min
Jul 7, 12:36 AM CDTSevere Thunderstorm WarningGIDAdams, Clay, Hall, Hamilton, Nuckolls, Webster39 min
Jul 7, 12:51 AM CDTSevere Thunderstorm WarningGIDJewell, Smith39 min
Jul 7, 1:04 AM CDTSevere Thunderstorm WarningGIDClay, Fillmore, Hamilton, Nuckolls, Thayer, York41 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.8 hours before the alert went out and 129 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 2016-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2862 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 2016-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 189 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
2862 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
1697 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
189 m²/s²
0-3 km storm-relative helicity
298 m²/s²
Significant tornado parameter
0.9
Supercell composite
28.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 6, 9:28 PM CDTMesoscale DiscussionSPCNorton2 hr
Jul 7, 1:22 AM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Cloud, Doniphan, Jackson and 11 more83 min
Jul 7, 1:37 AM CDTSevere Thunderstorm WatchSPCAtchison, Brown, Clay, Cloud, Doniphan, Douglas and 15 more6 hr
Jul 7, 2:31 AM CDTMesoscale DiscussionSPCJewell, Mitchell, Norton, Phillips, Republic, Smith89 min
Jul 7, 4:27 AM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Douglas, Franklin, Jackson and 13 more93 min
Jul 7, 5:26 AM CDTMesoscale DiscussionSPCFranklin, Johnson, Linn, Miami, Osage2 hr
Jul 7, 2:40 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Norton, Rawlins2 hr
Jul 7, 5:14 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Graham, Norton, Phillips, Rawlins and 1 more3 hr
Jul 6, 7:38 PM CDTSevere Thunderstorm WatchSPCAntelope, Boone, Burt, Cedar, Colfax, Cuming and 11 more6 hr
Jul 7, 1:50 PM CDTMesoscale DiscussionSPCBurt, Colfax, Cuming, Dodge, Douglas, Sarpy and 3 more115 min
Jul 7, 3:54 PM CDTSevere Thunderstorm WatchSPCBurt, Butler, Cass, Colfax, Cuming, Dakota and 11 more5 hr
Jul 7, 6:30 PM CDTMesoscale DiscussionSPCCass, Otoe, Sarpy2 hr

Nearby

Severe Thunderstorm Watches in Nebraska, 2016Severe Thunderstorm Watches in Kansas, 2016Every severe thunderstorm watch in 2016

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.