Alert archive / Nebraska / Severe Thunderstorm Watches in 2015
Severe Thunderstorm Watch 352
The Storm Prediction Center issued this severe thunderstorm watch at Jun 25, 2015, 2:30 PM MDT for 16 counties in Colorado; 24 counties in Nebraska; 6 counties in Wyoming. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 25, 2015, 2:30 PM MDT (20:30 UTC)
- Expired
- Jun 25, 2015, 10:00 PM MDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 46 counties
Adams County, CO, Arapahoe County, CO, Boulder County, CO, Broomfield County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Jefferson County, CO, Larimer County, CO, Lincoln County, CO, 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, Cherry County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Frontier County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Hooker County, NE, Keith County, NE, Kimball County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Morrill County, NE, Perkins County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Thomas County, NE, Albany County, WY, Converse County, WY, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 116 km from the middle of the area, began a volume at 20:30 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
- 40%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
39 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 2:32 PM MDT | Severe Thunderstorm Warning | LBF | Arthur, Garden, Grant | 43 min |
| Jun 25, 3:15 PM MDT | Severe Thunderstorm Warning | LBF | Arthur, Garden, Keith | 45 min |
| Jun 25, 3:42 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 48 min |
| Jun 25, 3:58 PM MDT | Severe Thunderstorm Warning | LBF | Keith | 47 min |
| Jun 25, 4:02 PM MDT | Severe Thunderstorm Warning | LBF | Blaine, Custer, Logan, McPherson, Thomas | 43 min |
| Jun 25, 4:07 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 38 min |
| Jun 25, 4:14 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 46 min |
| Jun 25, 4:35 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Dawes, Sioux | 40 min |
| Jun 25, 4:37 PM MDT | Flash Flood Warning | CYS | Dawes | 3 hr |
| Jun 25, 4:47 PM MDT | Severe Thunderstorm Warning | LBF | Cherry, Sheridan | 43 min |
| Jun 25, 4:51 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Kimball, Morrill, Scotts Bluff | 24 min |
| Jun 25, 4:56 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 49 min |
| Jun 25, 4:58 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Morrill, Scotts Bluff | 47 min |
| Jun 25, 5:05 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 40 min |
| Jun 25, 5:05 PM MDT | Tornado Warning | CYS | Morrill, Scotts Bluff | 40 min |
| Jun 25, 5:13 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Dawes, Morrill | 49 min |
| Jun 25, 5:22 PM MDT | Severe Thunderstorm Warning | LBF | Cherry, Sheridan | 38 min |
| Jun 25, 5:30 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 45 min |
| Jun 25, 5:33 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 42 min |
| Jun 25, 5:44 PM MDT | Tornado Warning | CYS | Morrill | 22 min |
| Jun 25, 5:57 PM MDT | Severe Thunderstorm Warning | LBF | Cherry, Garden, Grant, Sheridan | 48 min |
| Jun 25, 6:07 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 19 min |
| Jun 25, 6:10 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 50 min |
| Jun 25, 6:13 PM MDT | Flash Flood Warning | CYS | Banner, Morrill, Scotts Bluff | 4 hr |
| Jun 25, 6:24 PM MDT | Severe Thunderstorm Warning | LBF | Arthur, Garden, Grant | 51 min |
| Jun 25, 6:34 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver, Jefferson | 41 min |
| Jun 25, 7:01 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 29 min |
| Jun 25, 7:04 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 41 min |
| Jun 25, 7:05 PM MDT | Severe Thunderstorm Warning | LBF | Arthur, Garden, Keith, Lincoln, McPherson | 55 min |
| Jun 25, 7:11 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 34 min |
| Jun 25, 7:20 PM MDT | Severe Thunderstorm Warning | LBF | Deuel | 40 min |
| Jun 25, 7:42 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 48 min |
| Jun 25, 8:04 PM MDT | Severe Thunderstorm Warning | LBF | Chase, Perkins | 41 min |
| Jun 25, 8:23 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 37 min |
| Jun 25, 8:43 PM MDT | Severe Thunderstorm Warning | LBF | Chase, Hayes, Perkins | 47 min |
| Jun 25, 8:53 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 52 min |
| Jun 25, 9:09 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 36 min |
| Jun 25, 9:39 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 33 min |
| Jun 25, 10:00 PM MDT | Flash Flood Warning | BOU | Morgan, Weld | 3 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
Denver, CO (KDEN), launched 12:00Z, 8.5 hours before the alert went out and 220 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
- 2770 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 74 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 |
|---|---|---|---|---|
| Jun 25, 2:10 PM MDT | Mesoscale Discussion | SPC | Logan, Morgan, Phillips, Sedgwick, Washington, Weld and 1 more | 65 min |
| Jun 25, 4:25 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Broomfield, Denver, Douglas, Elbert and 10 more | 95 min |
| Jun 25, 5:22 PM MDT | Mesoscale Discussion | SPC | Logan, Phillips, Sedgwick, Washington, Yuma | 83 min |
| Jun 25, 12:57 AM MDT | Mesoscale Discussion | SPC | Dawes, Sheridan, Sioux | 93 min |
| Jun 25, 10:58 AM MDT | Mesoscale Discussion | SPC | Arthur, Banner, Box Butte, Cherry, Cheyenne, Dawes and 8 more | 2 hr |
| Jun 24, 6:13 PM MDT | Mesoscale Discussion | SPC | Converse, Niobrara, Weston | 2 hr |
| Jun 25, 6:46 AM MDT | Mesoscale Discussion | SPC | Campbell, Crook, Johnson, Sheridan, Weston | 89 min |
Nearby
Severe Thunderstorm Watches in Nebraska, 2015Severe Thunderstorm Watches in Colorado, 2015Severe Thunderstorm Watches in Wyoming, 2015Every severe thunderstorm watch in 2015
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.