Alert archive / Nebraska / Tornado Watches in 2010

Tornado Watch 282

June 7, 201016 counties in Nebraska

The Storm Prediction Center issued this tornado watch at Jun 7, 2010, 6:55 PM MDT for 16 counties in Nebraska. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 7, 2010, 6:55 PM MDT (00:55 UTC)
Expired
Jun 8, 2010, 1:55 AM MDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt

Counties Arthur County, NE, Chase County, NE, Cherry County, NE, Deuel County, NE, Frontier County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Hooker County, NE, Keith County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Perkins County, NE, Sheridan County, NE, Thomas County, NE

The radar

The North Platte radar (KLNX), 92 km from the middle of the area, began a volume at 00:57 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
70%
One or more gusts of 65 knots or more
50%
Ten or more severe hail reports
70%
One or more hailstones of 2 inches or more
50%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 7, 7:04 PM MDTSevere Thunderstorm WarningLBFSheridan56 min
Jun 7, 7:55 PM MDTSevere Thunderstorm WarningLBFCherry, Grant, Sheridan65 min
Jun 7, 8:51 PM MDTSevere Thunderstorm WarningLBFCherry, Grant, Hooker, Thomas54 min
Jun 7, 9:04 PM MDTTornado WarningLBFCherry, Hooker26 min
Jun 7, 9:30 PM MDTTornado WarningLBFHooker, Thomas30 min
Jun 7, 9:36 PM MDTSevere Thunderstorm WarningLBFHooker, Lincoln, Logan, McPherson, Thomas54 min
Jun 7, 9:57 PM MDTTornado WarningLBFLogan, Thomas33 min
Jun 7, 10:13 PM MDTSevere Thunderstorm WarningLBFLincoln62 min
Jun 7, 10:17 PM MDTSevere Thunderstorm WarningLBFBlaine, Custer, Lincoln, Logan, Loup, Thomas43 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, 0.9 hours before the alert went out and 126 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 2010-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1563 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 2010-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 297 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
1563 J/kg
Mixed-layer CIN
-199 J/kg
Mixed-layer LCL
756 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
297 m²/s²
0-3 km storm-relative helicity
284 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 7, 6:23 PM MDTMesoscale DiscussionSPCAdams, Boulder, Larimer, Logan, Morgan, Phillips and 2 more2 hr
Jun 7, 8:42 PM MDTMesoscale DiscussionSPCLogan, Sedgwick2 hr
Jun 8, 12:22 AM MDTMesoscale DiscussionSPCKit Carson, Logan, Phillips, Sedgwick, Washington, Yuma113 min
Jun 7, 9:31 PM MDTSevere Thunderstorm WatchSPCAdams, Antelope, Blaine, Boone, Brown, Buffalo and 56 more7 hr
Jun 7, 10:37 PM MDTMesoscale DiscussionSPCAdams, Boone, Buffalo, Butler, Cass, Chase and 45 more113 min
Jun 8, 1:56 AM MDTMesoscale DiscussionSPCBlaine, Buffalo, Burt, Butler, Cass, Colfax and 28 more2 hr

Nearby

Tornado Watches in Nebraska, 2010Every tornado watch in 2010

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.