Alert archive / Colorado / Boulder County / 2021
Weather alerts in Boulder County, Colorado, May 2021
11 weather alerts in May 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 11
- Warnings
- 2
- Watches
- 2
- Advisories
- 3
- Busiest day
- May 2, 20215 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 | Lasted |
|---|---|---|---|
| May 1, 3:56 AM MDT | Winter Storm Watch | BOU | 24 hr |
| May 2, 3:42 AM MDT | Winter Storm Warning | BOU | 34 hr |
| May 2, 10:14 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 2, 10:36 AM MDT | Special Weather Statement | BOU | 24 min |
| May 2, 2:19 PM MDT | Winter Weather Advisory | BOU | 23 hr |
| May 2, 5:47 PM MDT | Areal Flood Advisory | BOU | 88 min |
| May 9, 3:40 AM MDT | Winter Storm Watch | BOU | 11 hr |
| May 9, 2:19 PM MDT | Winter Storm Warning | BOU | 52 hr |
| May 17, 3:45 PM MDT | Areal Flood Advisory | BOU | 75 min |
| May 17, 3:49 PM MDT | Special Weather Statement | BOU | 41 min |
| May 29, 1:34 PM MDT | Special Weather Statement | BOU | 26 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 3 |
| Flooding | |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 1 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20202022
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.