Alert archive / Colorado / Mesoscale Discussions / 2020
Mesoscale Discussions in Colorado, September 2020
2 mesoscale discussions in September 2020. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in September 2020. Tap one for its archive.
- Mesoscale Discussions
- 2
- Busiest day
- September 8, 20202 mesoscale discussions
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 |
|---|---|---|---|---|
| Sep 8, 8:21 AM MDT | Mesoscale Discussion | SPC | Boulder, Grand, Jackson, Larimer, Routt, Summit | 4 hr |
| Sep 8, 2:48 PM MDT | Mesoscale Discussion | SPC | Alamosa, Chaffee, Conejos, Costilla, Custer, Douglas and 10 more | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Boulder County1
- Grand County1
- Jackson County1
- Larimer County1
- Routt County1
- Summit County1
- Alamosa County1
- Chaffee County1
- Conejos County1
- Costilla County1
- Custer County1
- Douglas County1
- El Paso County1
- Fremont County1
- Huerfano County1
- Lake County1
- Las Animas County1
- Park County1
- Pueblo County1
- Rio Grande County1
- Saguache County1
- Teller County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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. Warning verification from the Mesonet's Cow. Rebuilt daily.