Alert archive / Nebraska / Tornado Watches in 2008
Tornado Watch 343
The Storm Prediction Center issued this tornado watch at May 23, 2008, 6:07 PM MDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 23, 2008, 6:07 PM MDT (00:07 UTC)
- Expired
- May 23, 2008, 10:55 PM MDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 33 counties
Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Arthur County, NE, Banner County, NE, Box Butte County, NE, Chase County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Frontier County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Keith County, NE, Kimball County, NE, Lincoln County, NE, Morrill County, NE, Perkins County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Custer County, SD, Fall River County, SD, Converse County, WY, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY, Weston County, WY
The radar
The Cheyenne radar (KCYS), 170 km from the middle of the area, began a volume at 00:09 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
- 20%
- One or more gusts of 65 knots or more
- 5%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 50%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 6:07 PM MDT | Tornado Warning | CYS | Goshen | 26 min |
| May 23, 6:08 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln, Logan, McPherson | 37 min |
| May 23, 6:10 PM MDT | Tornado Warning | CYS | Kimball | 28 min |
| May 23, 6:16 PM MDT | Severe Thunderstorm Warning | LBF | Keith, Perkins | 29 min |
| May 23, 6:24 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 36 min |
| May 23, 6:34 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 41 min |
| May 23, 6:42 PM MDT | Severe Thunderstorm Warning | LBF | Arthur, Keith | 33 min |
| May 23, 6:47 PM MDT | Flash Flood Warning | LBF | Custer, Lincoln | 6 hr |
| May 23, 8:39 PM MDT | Flash Flood Warning | CYS | Cheyenne | 2 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 0.1 hours before the alert went out and 191 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 590 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 209 m²/s²
- 0-3 km storm-relative helicity
- 169 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 7:17 PM MDT | Mesoscale Discussion | SPC | Kit Carson, Yuma | 58 min |
| May 23, 7:48 PM MDT | Tornado Watch | SPC | Adams, Clay, Fillmore, Franklin, Furnas, Gosper and 8 more | 6 hr |
| May 23, 9:33 PM MDT | Mesoscale Discussion | SPC | Adams, Clay, Fillmore, Franklin, Furnas, Gosper and 8 more | 57 min |
| May 23, 10:14 PM MDT | Mesoscale Discussion | SPC | Arthur, Dawson, Frontier, Garden, Grant, Hayes and 6 more | 61 min |
| May 24, 12:18 PM MDT | Mesoscale Discussion | SPC | Keya Paha | 57 min |
| May 24, 1:17 PM MDT | Mesoscale Discussion | SPC | Adams, Antelope, Boone, Boyd, Buffalo, Butler and 27 more | 118 min |
| May 24, 2:08 PM MDT | Tornado Watch | SPC | Adams, Antelope, Boone, Boyd, Brown, Buffalo and 45 more | 6 hr |
| May 24, 5:33 PM MDT | Mesoscale Discussion | SPC | Adams, Boone, Burt, Butler, Cass, Cedar and 34 more | 117 min |
| May 24, 1:39 PM MDT | Tornado Watch | SPC | Aurora, Beadle, Bon Homme, Brown, Brule, Buffalo and 31 more | 7 hr |
| May 24, 5:07 PM MDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brookings, Brown, Brule, Buffalo and 39 more | 113 min |
Nearby
Tornado Watches in Nebraska, 2008Tornado Watches in Colorado, 2008Tornado Watches in Wyoming, 2008Every tornado watch in 2008
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.