Alert archive / Colorado / Severe Thunderstorm Watches in 2018
Severe Thunderstorm Watch 128
The Storm Prediction Center issued this severe thunderstorm watch at May 28, 2018, 2:01 PM MDT for 19 counties in Colorado; 4 counties in Nebraska; 6 counties in Wyoming. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 28, 2018, 2:01 PM MDT (20:01 UTC)
- Expired
- May 28, 2018, 9:00 PM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 29 counties
Adams County, CO, Arapahoe County, CO, Boulder County, CO, Broomfield County, CO, Clear Creek County, CO, Crowley County, CO, Denver County, CO, Douglas County, CO, El Paso County, CO, Elbert County, CO, Gilpin County, CO, Jefferson County, CO, Kiowa County, CO, Larimer County, CO, Logan County, CO, Morgan County, CO, Pueblo County, CO, Teller County, CO, Weld County, CO, Banner County, NE, Kimball County, NE, Scotts Bluff County, NE, Sioux County, NE, Albany County, WY, Converse County, WY, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY
The radar
The Denver radar (KFTG), 17 km from the middle of the area, began a volume at 20:00 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
- 5%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 80%
- One or more hailstones of 2 inches or more
- 60%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
32 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 2:37 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 23 min |
| May 28, 3:00 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 45 min |
| May 28, 3:25 PM MDT | Severe Thunderstorm Warning | BOU | Clear Creek, Jefferson, Park | 50 min |
| May 28, 3:49 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 41 min |
| May 28, 4:03 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 42 min |
| May 28, 4:10 PM MDT | Severe Thunderstorm Warning | PUB | El Paso, Fremont, Pueblo | 35 min |
| May 28, 4:13 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver, Jefferson | 47 min |
| May 28, 4:23 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 37 min |
| May 28, 4:26 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 34 min |
| May 28, 4:40 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Douglas | 50 min |
| May 28, 4:44 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 31 min |
| May 28, 4:46 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 44 min |
| May 28, 4:57 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 34 min |
| May 28, 5:11 PM MDT | Tornado Warning | BOU | Morgan | 34 min |
| May 28, 5:14 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 31 min |
| May 28, 5:15 PM MDT | Tornado Warning | BOU | Weld | 30 min |
| May 28, 5:27 PM MDT | Tornado Warning | BOU | Logan, Washington | 33 min |
| May 28, 5:36 PM MDT | Tornado Warning | BOU | Weld | 24 min |
| May 28, 5:38 PM MDT | Tornado Warning | BOU | Weld | 37 min |
| May 28, 5:39 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 66 min |
| May 28, 5:47 PM MDT | Tornado Warning | BOU | Morgan, Weld | 28 min |
| May 28, 6:03 PM MDT | Flash Flood Warning | CYS | Laramie | 3 hr |
| May 28, 6:04 PM MDT | Tornado Warning | BOU | Logan | 26 min |
| May 28, 6:26 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Kimball, Scotts Bluff | 49 min |
| May 28, 6:28 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 32 min |
| May 28, 6:35 PM MDT | Tornado Warning | BOU | Morgan | 25 min |
| May 28, 6:37 PM MDT | Tornado Warning | BOU | Weld | 23 min |
| May 28, 6:40 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 50 min |
| May 28, 6:50 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Kimball | 40 min |
| May 28, 6:52 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 23 min |
| May 28, 7:07 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Box Butte, Morrill, Scotts Bluff, Sioux | 41 min |
| May 28, 7:22 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 38 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 12:19 PM MDT | Mesoscale Discussion | SPC | Jackson, Routt | 86 min |
| May 28, 12:46 PM MDT | Mesoscale Discussion | SPC | Cheyenne, Kit Carson | 59 min |
| May 28, 1:12 PM MDT | Tornado Watch | SPC | Cheyenne, Kit Carson, Lincoln, Washington, Yuma | 8 hr |
| May 28, 1:39 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 7 more | 96 min |
| May 28, 4:54 PM MDT | Mesoscale Discussion | SPC | Cheyenne, Kit Carson, Washington, Yuma | 96 min |
| May 27, 7:31 PM MDT | Mesoscale Discussion | SPC | Arthur, Box Butte, Chase, Cherry, Dawes, Deuel and 14 more | 119 min |
| May 28, 4:23 AM MDT | Mesoscale Discussion | SPC | Blaine, Brown, Buffalo, Custer, Dawson, Frontier and 11 more | 3 hr |
Nearby
Severe Thunderstorm Watches in Colorado, 2018Severe Thunderstorm Watches in Wyoming, 2018Severe Thunderstorm Watches in Nebraska, 2018Every severe thunderstorm watch in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.