Alert archive / Nebraska / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 342
The Storm Prediction Center issued this severe thunderstorm watch at Jun 21, 2013, 10:25 PM CDT for 13 counties in Nebraska. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 21, 2013, 10:25 PM CDT (03:25 UTC)
- Expired
- Jun 22, 2013, 1:13 AM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
Counties Buffalo County, NE, Dawson County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Merrick County, NE, Nance County, NE, Polk County, NE, Sherman County, NE, Valley County, NE, York County, NE
The radar
The Grand Island radar (KUEX), 131 km from the middle of the area, began a volume at 03:26 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 20%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 10:53 PM CDT | Severe Thunderstorm Warning | GID | Greeley, Howard, Sherman, Valley | 37 min |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.4 hours before the alert went out and 130 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.
- Mixed-layer CAPE
- 1500 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 3037 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 8:56 PM CDT | Mesoscale Discussion | SPC | Blaine, Boyd, Brown, Cherry, Holt, Hooker and 7 more | 94 min |
| Jun 21, 9:07 PM CDT | Severe Thunderstorm Watch | SPC | Antelope, Blaine, Boone, Boyd, Cedar, Custer and 9 more | 5 hr |
| Jun 21, 9:39 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cheyenne, Dawes, Deuel, Garden and 5 more | 36 min |
| Jun 22, 12:42 AM CDT | Mesoscale Discussion | SPC | Arthur, Blaine, Brown, Cherry, Custer, Grant and 7 more | 93 min |
| Jun 22, 2:45 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Dawes, Garden, Morrill, Scotts Bluff and 2 more | 90 min |
| Jun 22, 3:13 PM CDT | Tornado Watch | SPC | Banner, Box Butte, Cheyenne, Dawes, Deuel, Garden and 5 more | 6 hr |
| Jun 22, 3:34 PM CDT | Mesoscale Discussion | SPC | Adams, Blaine, Brown, Buffalo, Custer, Dawson and 15 more | 56 min |
| Jun 22, 5:00 PM CDT | Mesoscale Discussion | SPC | Chase, Cheyenne, Custer, Dawson, Deuel, Dundy and 7 more | 90 min |
| Jun 22, 5:18 PM CDT | Tornado Watch | SPC | Dundy | 7 hr |
| Jun 22, 5:56 PM CDT | Tornado Watch | SPC | Adams, Antelope, Arthur, Blaine, Boone, Buffalo and 52 more | 7 hr |
Nearby
Severe Thunderstorm Watches in Nebraska, 2013Every severe thunderstorm watch in 2013
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.