Alert archive / Colorado / 2018
Weather alerts in Colorado, September 2018
131 weather alerts in September 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in September 2018. Tap one for its archive.
- Alerts
- 131
- Warnings
- 31
- Watches
- 11
- Advisories
- 20
- Busiest day
- September 3, 201820 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 6:00 PM MDT | Special Weather Statement | PUB | Costilla | 30 min |
| Aug 31, 6:13 PM MDT | Special Weather Statement | GLD | Washington | 47 min |
| Aug 31, 6:48 PM MDT | Special Weather Statement | GLD | Kit Carson | 42 min |
| Aug 31, 7:16 PM MDT | Special Weather Statement | GJT | Mesa | 44 min |
| Aug 31, 7:19 PM MDT | Special Weather Statement | PUB | Huerfano | 26 min |
| Aug 31, 7:22 PM MDT | Special Weather Statement | GLD | Kit Carson | 53 min |
| Aug 31, 7:25 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 35 min |
| Aug 31, 8:07 PM MDT | Special Weather Statement | GJT | Garfield | 23 min |
| Sep 1, 11:23 AM MDT | Special Weather Statement | GJT | La Plata | 52 min |
| Sep 1, 1:07 PM MDT | Special Weather Statement | GJT | Montezuma | 38 min |
| Sep 1, 1:49 PM MDT | Special Weather Statement | GJT | La Plata | 41 min |
| Sep 1, 1:52 PM MDT | Special Weather Statement | GJT | Montezuma | 23 min |
| Sep 1, 2:54 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 37 min |
| Sep 1, 3:05 PM MDT | Special Weather Statement | PUB | El Paso | 40 min |
| Sep 1, 3:57 PM MDT | Special Weather Statement | PUB | Douglas | 48 min |
| Sep 1, 4:37 PM MDT | Mesoscale Discussion | SPC | Logan, Phillips, Sedgwick, Washington, Yuma | 113 min |
| Sep 1, 5:14 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Weld | 46 min |
| Sep 1, 5:22 PM MDT | Special Weather Statement | GLD | Yuma | 38 min |
| Sep 1, 6:05 PM MDT | Special Weather Statement | GLD | Yuma | 40 min |
| Sep 1, 6:31 PM MDT | Special Weather Statement | PUB | Elbert | 29 min |
| Sep 1, 6:46 PM MDT | Special Weather Statement | GLD | Yuma | 29 min |
| Sep 1, 7:01 PM MDT | Special Weather Statement | PUB | El Paso | 29 min |
| Sep 3, 6:13 AM MDT | Dense Fog Advisory | GLD | Cheyenne, Kit Carson, Yuma | 3 hr |
| Sep 3, 11:27 AM MDT | Special Weather Statement | PUB | Kiowa | 48 min |
| Sep 3, 11:32 AM MDT | Special Weather Statement | GLD | Cheyenne | 43 min |
| Sep 3, 11:55 AM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 35 min |
| Sep 3, 12:13 PM MDT | Special Weather Statement | GLD | Cheyenne | 32 min |
| Sep 3, 12:28 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 7 min |
| Sep 3, 12:37 PM MDT | Special Weather Statement | GLD | Cheyenne | 38 min |
| Sep 3, 12:54 PM MDT | Special Weather Statement | GLD | Kit Carson | 36 min |
| Sep 3, 1:27 PM MDT | Special Weather Statement | GLD | Kit Carson | 33 min |
| Sep 3, 1:47 PM MDT | Special Weather Statement | GLD | Kit Carson | 43 min |
| Sep 3, 1:58 PM MDT | Special Weather Statement | PUB | Otero | 47 min |
| Sep 3, 2:03 PM MDT | Special Weather Statement | PUB | Prowers | 42 min |
| Sep 3, 2:50 PM MDT | Special Weather Statement | PUB | Prowers | 40 min |
| Sep 3, 3:05 PM MDT | Special Weather Statement | PUB | Prowers | 25 min |
| Sep 3, 3:38 PM MDT | Special Weather Statement | PUB | Prowers | 37 min |
| Sep 3, 3:42 PM MDT | Special Weather Statement | PUB | Baca | 33 min |
| Sep 3, 3:59 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Las Animas | 31 min |
| Sep 3, 4:18 PM MDT | Special Weather Statement | PUB | Las Animas | 42 min |
| Sep 3, 4:28 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 32 min |
| Sep 3, 4:49 PM MDT | Special Weather Statement | PUB | Baca | 41 min |
| Sep 3, 6:57 PM MDT | Special Weather Statement | PUB | Prowers | 63 min |
| Sep 4, 6:29 PM MDT | Special Weather Statement | GLD | Cheyenne | 16 min |
| Sep 4, 6:56 PM MDT | Special Weather Statement | GLD | Cheyenne | 34 min |
| Sep 4, 7:10 PM MDT | Special Weather Statement | GLD | Kit Carson | 20 min |
| Sep 4, 8:02 PM MDT | Special Weather Statement | GLD | Kit Carson | 28 min |
| Sep 4, 11:29 PM MDT | Areal Flood Advisory | BOU | Boulder | 91 min |
| Sep 4, 11:34 PM MDT | Areal Flood Advisory | BOU | Jefferson | 86 min |
| Sep 5, 12:05 AM MDT | Areal Flood Advisory | BOU | Boulder, Larimer | 85 min |
| Sep 5, 1:05 AM MDT | Areal Flood Advisory | BOU | Boulder | 85 min |
| Sep 5, 1:25 AM MDT | Areal Flood Advisory | BOU | Larimer | 95 min |
| Sep 5, 2:08 AM MDT | Areal Flood Advisory | BOU | Jefferson, Park | 97 min |
| Sep 5, 2:31 AM MDT | Areal Flood Advisory | BOU | Adams, Broomfield, Denver, Jefferson | 89 min |
| Sep 5, 3:00 AM MDT | Areal Flood Advisory | BOU | Denver | 90 min |
| Sep 5, 3:57 AM MDT | Areal Flood Advisory | BOU | Adams, Arapahoe, Denver | 93 min |
| Sep 5, 2:36 PM MDT | Areal Flood Advisory | BOU | Clear Creek, Park | 69 min |
| Sep 5, 3:14 PM MDT | Areal Flood Advisory | BOU | Adams, Arapahoe, Broomfield, Denver, Jefferson | 61 min |
| Sep 5, 4:30 PM MDT | Special Weather Statement | PUB | Pueblo | 30 min |
| Sep 5, 5:50 PM MDT | Special Weather Statement | PUB | Las Animas | 25 min |
| Sep 6, 12:59 PM MDT | Flash Flood Warning | GJT | La Plata | 3 hr |
| Sep 6, 2:51 PM MDT | Special Weather Statement | PUB | Teller | 39 min |
| Sep 6, 3:42 PM MDT | Special Weather Statement | BOU | Broomfield | 33 min |
| Sep 6, 3:57 PM MDT | Flash Flood Warning | GJT | La Plata | 3 hr |
| Sep 6, 4:08 PM MDT | Areal Flood Advisory | PUB | Custer, Fremont | 112 min |
| Sep 6, 4:12 PM MDT | Flash Flood Warning | PUB | Custer, Fremont | 3 hr |
| Sep 6, 5:37 PM MDT | Special Weather Statement | BOU | Elbert | 38 min |
| Sep 6, 7:43 PM MDT | Special Weather Statement | PUB | Elbert | 32 min |
| Sep 7, 4:04 AM MDT | Dense Fog Advisory | BOU | Adams, Arapahoe, Broomfield, Denver, Douglas, Weld | 5 hr |
| Sep 7, 6:11 AM MDT | Dense Fog Advisory | GLD | Kit Carson, Yuma | 4 hr |
| Sep 8, 7:21 AM MDT | Dense Fog Advisory | GLD | Kit Carson, Yuma | 2 hr |
| Sep 9, 1:56 PM MDT | Fire Weather Watch | GJT | Moffat, Rio Blanco | 24 hr |
| Sep 9, 1:56 PM MDT | Fire Weather Watch | GJT | Garfield, Mesa, Moffat, Rio Blanco | 24 hr |
| Sep 9, 5:26 PM MDT | Special Weather Statement | BOU | Adams | 49 min |
| Sep 9, 7:13 PM MDT | Special Weather Statement | BOU | Washington | 32 min |
| Sep 9, 8:01 PM MDT | Special Weather Statement | BOU | Logan | 44 min |
| Sep 9, 8:31 PM MDT | Special Weather Statement | GLD | Yuma | 44 min |
| Sep 10, 1:38 PM MDT | Fire Weather Watch | GJT | Garfield, Mesa, Moffat, Rio Blanco | 25 hr |
| Sep 10, 1:38 PM MDT | Red Flag Warning | GJT | Moffat, Rio Blanco | 30 hr |
| Sep 10, 1:38 PM MDT | Red Flag Warning | GJT | Delta, Eagle, Garfield, Mesa, Moffat, Montrose and 5 more | 55 hr |
| Sep 10, 2:30 PM MDT | Red Flag Warning | BOU | Grand, Jackson, Summit | 54 hr |
| Sep 10, 3:28 PM MDT | Special Weather Statement | GLD | Kit Carson | 47 min |
| Sep 10, 3:51 PM MDT | Areal Flood Advisory | BOU | Lincoln | 84 min |
| Sep 11, 11:58 AM MDT | Special Weather Statement | BOU | Broomfield, Denver | 32 min |
| Sep 11, 12:37 PM MDT | Special Weather Statement | BOU | Denver | 23 min |
| Sep 11, 2:05 PM MDT | Special Weather Statement | BOU | Broomfield, Denver, Douglas | 40 min |
| Sep 11, 2:32 PM MDT | Red Flag Warning | GJT | Delta, Eagle, Garfield, Gunnison, Hinsdale, Mesa and 7 more | 54 hr |
| Sep 11, 3:06 PM MDT | Red Flag Warning | BOU | Boulder, Grand, Jackson, Larimer, Summit | 53 hr |
| Sep 11, 4:22 PM MDT | Special Weather Statement | PUB | El Paso | 23 min |
| Sep 11, 4:25 PM MDT | Special Weather Statement | BOU | Sedgwick | 35 min |
| Sep 11, 6:01 PM MDT | Special Weather Statement | GLD | Washington | 29 min |
| Sep 11, 6:31 PM MDT | Special Weather Statement | GLD | Yuma | 29 min |
| Sep 12, 2:17 PM MDT | Red Flag Warning | GJT | Moffat, Rio Blanco | 55 hr |
| Sep 13, 3:51 PM MDT | Fire Weather Watch | GJT | Moffat, Rio Blanco | 12 hr |
| Sep 14, 3:31 AM MDT | Red Flag Warning | GJT | Moffat, Rio Blanco | 41 hr |
| Sep 18, 1:30 PM MDT | Red Flag Warning | GJT | Moffat, Rio Blanco | 30 hr |
| Sep 19, 4:38 PM MDT | Special Weather Statement | BOU | Weld | 37 min |
| Sep 19, 5:23 PM MDT | Special Weather Statement | BOU | Denver | 52 min |
| Sep 19, 5:49 PM MDT | Areal Flood Advisory | BOU | Arapahoe, Denver | 75 min |
| Sep 19, 7:58 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Washington | 47 min |
| Sep 19, 9:23 PM MDT | Special Weather Statement | GLD | Kit Carson | 37 min |
| Sep 19, 9:46 PM MDT | Tornado Warning | GLD | Cheyenne, Kit Carson | 29 min |
| Sep 19, 10:00 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 28 min |
| Sep 19, 10:16 PM MDT | Special Weather Statement | GLD | Kit Carson | 44 min |
| Sep 19, 10:26 PM MDT | Mesoscale Discussion | SPC | Kit Carson, Phillips, Sedgwick, Yuma | 94 min |
| Sep 19, 10:29 PM MDT | Special Weather Statement | GLD | Yuma | 31 min |
| Sep 20, 1:17 PM MDT | Special Weather Statement | BOU | Weld | 58 min |
| Sep 20, 1:51 PM MDT | Freeze Warning | GJT | Moffat, Rio Blanco, Routt | 19 hr |
| Sep 20, 2:20 PM MDT | Special Weather Statement | BOU | Logan, Weld | 55 min |
| Sep 20, 3:19 PM MDT | Special Weather Statement | BOU | Logan, Phillips, Sedgwick | 56 min |
| Sep 21, 3:43 AM MDT | Fire Weather Watch | GJT | Moffat | 24 hr |
| Sep 21, 3:43 AM MDT | Fire Weather Watch | GJT | Moffat | 35 hr |
| Sep 21, 5:24 PM MDT | Special Weather Statement | PUB | Saguache | 36 min |
| Sep 21, 5:44 PM MDT | Severe Thunderstorm Warning | PUB | Saguache | 31 min |
| Sep 21, 6:15 PM MDT | Severe Thunderstorm Warning | PUB | Saguache | 30 min |
| Sep 21, 6:46 PM MDT | Special Weather Statement | PUB | Saguache | 29 min |
| Sep 22, 4:01 AM MDT | Red Flag Warning | GJT | Moffat | 15 hr |
| Sep 23, 3:39 AM MDT | Red Flag Warning | BOU | Grand, Jackson, Summit | 16 hr |
| Sep 23, 2:05 PM MDT | Red Flag Warning | GJT | Moffat, Rio Blanco | 24 hr |
| Sep 24, 2:24 PM MDT | Mesoscale Discussion | SPC | Adams, Logan, Morgan, Washington, Weld | 3 hr |
| Sep 25, 5:02 AM MDT | Frost Advisory | BOU | Larimer, Weld | 22 hr |
| Sep 26, 3:41 AM MDT | Freeze Watch | PUB | Alamosa, Conejos, Costilla, Rio Grande | 8 hr |
| Sep 26, 11:41 AM MDT | Freeze Warning | PUB | Alamosa, Conejos, Costilla, Rio Grande | 20 hr |
| Sep 27, 3:48 AM MDT | Fire Weather Watch | GJT | Garfield, Mesa, Moffat, Rio Blanco, Routt | 24 hr |
| Sep 27, 3:06 PM MDT | Fire Weather Watch | PUB | El Paso, Teller | 22 hr |
| Sep 27, 4:01 PM MDT | Fire Weather Watch | BOU | Boulder, Grand, Jackson, Larimer, Park, Summit | 19 hr |
| Sep 28, 3:50 AM MDT | Red Flag Warning | GJT | Garfield, Mesa, Moffat, Montrose, Rio Blanco, Routt and 1 more | 40 hr |
| Sep 28, 10:32 AM MDT | Red Flag Warning | BOU | Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more | 32 hr |
| Sep 28, 1:14 PM MDT | Red Flag Warning | PUB | Alamosa, Conejos, Costilla, El Paso, Fremont, Rio Grande and 2 more | 29 hr |
| Sep 29, 9:12 PM MDT | Dense Fog Advisory | GLD | Cheyenne, Kit Carson, Yuma | 12 hr |
| Sep 30, 2:58 PM MDT | Flash Flood Watch | GJT | Archuleta, Delta, Dolores, Gunnison, Hinsdale, La Plata and 6 more | 54 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 11 |
| Tornado Warning | 1 |
| Mesoscale Discussion | 3 |
| Special Weather Statement | 66 |
| Flooding | |
| Flash Flood Warning | 3 |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 14 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 1 |
| Fire | |
| Red Flag Warning | 14 |
| Fire Weather Watch | 9 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Moffat County17
- Kit Carson County16
- Rio Blanco County14
- Yuma County13
- Cheyenne County10
- Denver County10
- Mesa County9
- Garfield County7
- Weld County7
- Washington County6
- Arapahoe County6
- Logan County6
- Boulder County6
- Larimer County6
- Adams County6
- Broomfield County6
- La Plata County5
- El Paso County5
- Prowers County5
- Jefferson County5
- Routt County5
- Grand County5
- Jackson County5
- Summit County5
- Saguache County5
- Costilla County4
- Elbert County4
- Douglas County4
- Sedgwick County4
- Baca County4
- Park County4
- Montrose County4
- San Miguel County4
- Montezuma County3
- Phillips County3
- Las Animas County3
- Teller County3
- Fremont County3
- Delta County3
- Ouray County3
19 more counties
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.