Alert archive / Colorado / Gilpin County
Weather alerts in Gilpin County, Colorado, 2023
83 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Gilpin County and its neighbors
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Alerts
- 83
- Warnings
- 21
- Watches
- 23
- Advisories
- 22
- Busiest month
- April14 alerts
- Busiest day
- June 22, 20236 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Gilpin County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 4 | 0 | 100% | 0 | ||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Denver/Boulder, CO: tornado warnings | 67 | 20 | 70% | 79 | 71% | 13 min |
| NWS Denver/Boulder, CO: severe thunderstorm warnings | 467 | 169 | 64% | 521 | 75% | 18 min |
| NWS Denver/Boulder, CO: flash flood warnings | 80 | 19 | 76% | 35 | 74% | 74 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
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 |
|---|---|---|---|
| Jan 1, 3:06 AM MST | Winter Weather Advisory | BOU | 45 hr |
| Jan 10, 2:06 PM MST | Winter Weather Advisory | BOU | 33 hr |
| Jan 16, 12:36 PM MST | Winter Weather Advisory | BOU | 52 hr |
| Jan 27, 3:06 AM MST | Winter Weather Advisory | BOU | 38 hr |
| Jan 29, 8:36 AM MST | Winter Weather Advisory | BOU | 38 hr |
| Feb 8, 5:44 PM MST | Mesoscale Discussion | SPC | 4 hr |
| Feb 12, 1:51 PM MST | Winter Storm Watch | BOU | 37 hr |
| Feb 14, 2:59 AM MST | Winter Storm Warning | BOU | 45 hr |
| Feb 14, 2:59 AM MST | Winter Weather Advisory | BOU | 45 hr |
| Feb 18, 2:12 AM MST | High Wind Watch | BOU | 25 hr |
| Feb 19, 3:25 AM MST | High Wind Warning | BOU | 57 hr |
| Feb 21, 3:50 AM MST | Winter Weather Advisory | BOU | 49 hr |
| Feb 25, 2:08 PM MST | High Wind Watch | BOU | 22 hr |
| Feb 26, 12:04 PM MST | High Wind Warning | BOU | 18 hr |
| Mar 9, 2:19 AM MST | Winter Storm Watch | BOU | 13 hr |
| Mar 9, 2:59 PM MST | Winter Storm Warning | BOU | 44 hr |
| Mar 14, 2:56 AM MDT | Winter Weather Advisory | BOU | 57 hr |
| Mar 20, 2:16 PM MDT | Winter Weather Advisory | BOU | 58 hr |
| Mar 29, 3:07 PM MDT | Red Flag Warning | BOU | 52 hr |
| Apr 2, 3:50 AM MDT | Fire Weather Watch | BOU | 24 hr |
| Apr 3, 3:01 AM MDT | Winter Weather Advisory | BOU | 42 hr |
| Apr 3, 3:36 AM MDT | Red Flag Warning | BOU | 16 hr |
| Apr 10, 2:16 PM MDT | Fire Weather Watch | BOU | 24 hr |
| Apr 11, 2:33 PM MDT | Fire Weather Watch | BOU | 24 hr |
| Apr 11, 2:33 PM MDT | Red Flag Warning | BOU | 28 hr |
| Apr 12, 2:35 PM MDT | Red Flag Warning | BOU | 29 hr |
| Apr 13, 2:35 PM MDT | Winter Weather Advisory | BOU | 39 hr |
| Apr 16, 5:02 AM MDT | Fire Weather Watch | BOU | 34 hr |
| Apr 17, 2:35 PM MDT | Red Flag Warning | BOU | 29 hr |
| Apr 20, 1:22 PM MDT | Winter Weather Advisory | BOU | 46 hr |
| Apr 23, 1:53 PM MDT | Winter Storm Watch | BOU | 24 hr |
| Apr 24, 1:45 PM MDT | Winter Storm Warning | BOU | 39 hr |
| Apr 27, 3:29 AM MDT | Winter Weather Advisory | BOU | 27 hr |
| May 8, 2:24 PM MDT | Red Flag Warning | BOU | 29 hr |
| May 10, 1:25 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 10, 8:35 PM MDT | Winter Weather Advisory | BOU | 6 hr |
| May 10, 9:02 PM MDT | Winter Storm Watch | BOU | 5 hr |
| May 11, 2:09 AM MDT | Winter Storm Warning | BOU | 32 hr |
| May 26, 11:56 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 31, 1:18 PM MDT | Special Weather Statement | BOU | 42 min |
| May 31, 2:11 PM MDT | Special Weather Statement | BOU | 49 min |
| Jun 7, 2:35 AM MDT | Flash Flood Watch | BOU | 17 hr |
| Jun 7, 3:52 PM MDT | Severe Thunderstorm Warning | BOU | 27 min |
| Jun 11, 11:43 AM MDT | Flood Watch | BOU | 15 hr |
| Jun 12, 3:24 AM MDT | Flood Watch | BOU | 21 hr |
| Jun 21, 12:36 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 21, 2:49 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 21, 7:46 PM MDT | Severe Thunderstorm Warning | BOU | 44 min |
| Jun 21, 7:58 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jun 21, 9:58 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 22, 11:08 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 1:40 PM MDT | Severe Thunderstorm Warning | BOU | 15 min |
| Jun 22, 3:09 PM MDT | Areal Flood Advisory | BOU | 3 hr |
| Jun 29, 1:28 PM MDT | Special Weather Statement | BOU | 47 min |
| Jul 4, 1:41 PM MDT | Mesoscale Discussion | SPC | 64 min |
| Jul 4, 1:43 PM MDT | Special Weather Statement | BOU | 32 min |
| Jul 4, 2:05 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 4, 2:21 PM MDT | Special Weather Statement | BOU | 24 min |
| Jul 4, 5:14 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jul 6, 1:37 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 8, 12:23 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jul 28, 3:19 PM MDT | Special Weather Statement | BOU | 26 min |
| Jul 28, 3:29 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| Jul 31, 2:37 PM MDT | Flood Watch | BOU | 32 hr |
| Aug 24, 1:53 PM MDT | Flood Watch | BOU | 30 hr |
| Sep 10, 2:06 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Oct 10, 2:48 PM MDT | Winter Weather Advisory | BOU | 63 hr |
| Oct 26, 1:51 PM MDT | Winter Storm Watch | BOU | 12 hr |
| Oct 27, 1:53 AM MDT | Winter Storm Warning | BOU | 58 hr |
| Oct 27, 2:22 PM MDT | Winter Storm Watch | BOU | 6 hr |
| Nov 7, 1:46 PM MST | Winter Weather Advisory | BOU | 34 hr |
| Nov 22, 1:59 PM MST | Winter Weather Advisory | BOU | 63 hr |
| Dec 1, 3:16 AM MST | Winter Storm Warning | BOU | 3 days |
| Dec 1, 1:42 PM MST | Winter Weather Advisory | BOU | 63 hr |
| Dec 1, 1:45 PM MST | High Wind Watch | BOU | 23 hr |
| Dec 2, 12:43 PM MST | High Wind Warning | BOU | 25 hr |
| Dec 5, 2:22 PM MST | High Wind Watch | BOU | 23 hr |
| Dec 6, 1:25 PM MST | High Wind Warning | BOU | 28 hr |
| Dec 7, 3:01 AM MST | Winter Weather Advisory | BOU | 50 hr |
| Dec 9, 3:55 AM MST | High Wind Watch | BOU | 9 hr |
| Dec 9, 1:18 PM MST | High Wind Warning | BOU | 28 hr |
| Dec 12, 5:28 PM MST | Winter Weather Advisory | BOU | 16 hr |
| Dec 22, 8:49 PM MST | Winter Weather Advisory | BOU | 38 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 | 4 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 11 |
| Special Weather Statement | 6 |
| Flooding | |
| Flash Flood Watch | 1 |
| Flood Watch | 4 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 6 |
| Winter Storm Watch | 6 |
| Winter Weather Advisory | 21 |
| Wind and dust | |
| High Wind Warning | 5 |
| High Wind Watch | 5 |
| Fire | |
| Red Flag Warning | 6 |
| Fire Weather Watch | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.