Alert archive / Colorado / Gilpin County
Weather alerts in Gilpin County, Colorado, 2019
104 weather alerts in 2019, 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 2019. Tap one for its archive.
- Alerts
- 104
- Warnings
- 34
- Watches
- 21
- Advisories
- 30
- Busiest month
- October19 alerts
- Busiest day
- March 13, 20193 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, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 1 | 0% | 0 | ||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Denver/Boulder, CO: tornado warnings | 32 | 11 | 66% | 33 | 48% | 11 min |
| NWS Denver/Boulder, CO: severe thunderstorm warnings | 281 | 117 | 58% | 382 | 77% | 18 min |
| NWS Denver/Boulder, CO: flash flood warnings | 15 | 2 | 87% | 3 | 67% | 58 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 6, 4:15 AM MST | High Wind Watch | BOU | 8 hr |
| Jan 6, 12:31 PM MST | High Wind Warning | BOU | 33 hr |
| Jan 10, 2:42 PM MST | Winter Weather Advisory | BOU | 33 hr |
| Jan 11, 3:24 AM MST | Winter Storm Warning | BOU | 25 hr |
| Jan 17, 3:35 AM MST | Winter Weather Advisory | BOU | 37 hr |
| Jan 20, 3:01 PM MST | Winter Weather Advisory | BOU | 42 hr |
| Jan 22, 3:21 PM MST | Winter Weather Advisory | BOU | 44 hr |
| Jan 24, 3:03 PM MST | Winter Weather Advisory | BOU | 14 hr |
| Jan 27, 8:09 AM MST | High Wind Warning | BOU | 14 hr |
| Feb 3, 11:19 AM MST | High Wind Warning | BOU | 3 hr |
| Feb 4, 2:45 PM MST | Winter Storm Watch | BOU | 13 hr |
| Feb 5, 4:11 AM MST | Winter Weather Advisory | BOU | 48 hr |
| Feb 12, 4:55 AM MST | High Wind Watch | BOU | 6 hr |
| Feb 12, 11:10 AM MST | High Wind Warning | BOU | 37 hr |
| Feb 13, 4:26 AM MST | Winter Weather Advisory | BOU | 31 hr |
| Feb 13, 2:57 PM MST | Winter Weather Advisory | BOU | 42 hr |
| Feb 15, 10:25 AM MST | Winter Weather Advisory | BOU | 29 hr |
| Feb 20, 3:59 PM MST | Winter Weather Advisory | BOU | 66 hr |
| Feb 28, 3:49 AM MST | Winter Storm Warning | BOU | 4 days |
| Feb 28, 5:33 PM MST | Winter Storm Watch | BOU | 17 hr |
| Mar 5, 2:16 PM MST | Winter Storm Warning | BOU | 51 hr |
| Mar 5, 2:16 PM MST | Winter Weather Advisory | BOU | 51 hr |
| Mar 7, 1:53 PM MST | Winter Storm Warning | BOU | 40 hr |
| Mar 7, 2:06 PM MST | High Wind Watch | BOU | 24 hr |
| Mar 8, 2:29 PM MST | High Wind Warning | BOU | 19 hr |
| Mar 11, 6:48 AM MDT | Winter Storm Watch | BOU | 28 hr |
| Mar 12, 10:55 AM MDT | Winter Storm Warning | BOU | 34 hr |
| Mar 13, 4:31 AM MDT | Winter Weather Advisory | BOU | 22 hr |
| Mar 13, 10:27 AM MDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 13, 1:37 PM MDT | Mesoscale Discussion | SPC | 4 hr |
| Apr 8, 3:10 PM MDT | Winter Storm Watch | BOU | 21 hr |
| Apr 9, 11:47 AM MDT | Winter Storm Warning | BOU | 47 hr |
| Apr 26, 5:16 PM MDT | Special Weather Statement | BOU | 59 min |
| Apr 27, 2:46 PM MDT | Winter Storm Watch | BOU | 23 hr |
| Apr 28, 1:37 PM MDT | Special Weather Statement | BOU | 38 min |
| Apr 28, 2:08 PM MDT | Winter Storm Warning | BOU | 40 hr |
| May 7, 3:05 PM MDT | Winter Weather Advisory | BOU | 51 hr |
| May 7, 8:53 PM MDT | Dense Fog Advisory | BOU | 12 hr |
| May 8, 4:22 AM MDT | Winter Storm Warning | BOU | 38 hr |
| May 19, 4:31 AM MDT | Winter Storm Watch | BOU | 10 hr |
| May 19, 2:56 PM MDT | Winter Storm Warning | BOU | 47 hr |
| May 20, 4:50 AM MDT | Winter Weather Advisory | BOU | 31 hr |
| May 22, 2:51 PM MDT | Winter Weather Advisory | BOU | 27 hr |
| May 27, 3:01 PM MDT | Winter Weather Advisory | BOU | 33 hr |
| Jun 2, 10:57 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 7, 12:37 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 12:44 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 17, 12:04 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 21, 4:42 AM MDT | Winter Weather Advisory | BOU | 48 hr |
| Jul 4, 2:10 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 5, 1:18 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Jul 6, 11:57 AM MDT | Special Weather Statement | BOU | 48 min |
| Jul 6, 4:55 PM MDT | Mesoscale Discussion | SPC | 95 min |
| Jul 18, 3:28 AM MDT | Red Flag Warning | BOU | 16 hr |
| Jul 20, 12:53 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 20, 5:43 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jul 21, 4:37 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Jul 22, 2:05 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 12:48 PM MDT | Areal Flood Advisory | BOU | 87 min |
| Aug 21, 12:51 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Aug 27, 9:43 AM MDT | Red Flag Warning | BOU | 34 hr |
| Sep 6, 1:40 PM MDT | Special Weather Statement | BOU | 50 min |
| Sep 6, 2:02 PM MDT | Severe Thunderstorm Warning | BOU | 43 min |
| Sep 8, 2:56 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 20, 10:02 AM MDT | Red Flag Warning | BOU | 10 hr |
| Sep 27, 3:02 PM MDT | Fire Weather Watch | BOU | 13 hr |
| Sep 27, 3:02 PM MDT | Fire Weather Watch | BOU | 37 hr |
| Sep 28, 4:15 AM MDT | Red Flag Warning | BOU | 39 hr |
| Sep 29, 3:56 AM MDT | Red Flag Warning | BOU | 39 hr |
| Sep 30, 3:12 PM MDT | Red Flag Warning | BOU | 28 hr |
| Oct 1, 2:27 PM MDT | Red Flag Warning | BOU | 28 hr |
| Oct 2, 1:58 PM MDT | Fire Weather Watch | BOU | 39 hr |
| Oct 4, 4:44 AM MDT | Red Flag Warning | BOU | 14 hr |
| Oct 4, 2:44 PM MDT | Fire Weather Watch | BOU | 4 hr |
| Oct 4, 7:12 PM MDT | Red Flag Warning | BOU | 25 hr |
| Oct 7, 7:31 AM MDT | Red Flag Warning | BOU | 34 hr |
| Oct 7, 2:24 PM MDT | Fire Weather Watch | BOU | 14 hr |
| Oct 8, 4:51 AM MDT | Red Flag Warning | BOU | 37 hr |
| Oct 9, 3:17 PM MDT | Winter Weather Advisory | BOU | 23 hr |
| Oct 15, 2:07 PM MDT | Fire Weather Watch | BOU | 24 hr |
| Oct 18, 3:06 PM MDT | Winter Weather Advisory | BOU | 45 hr |
| Oct 20, 2:49 AM MDT | High Wind Warning | BOU | 16 hr |
| Oct 20, 2:34 PM MDT | Winter Weather Advisory | BOU | 30 hr |
| Oct 22, 3:26 AM MDT | Winter Storm Watch | BOU | 24 hr |
| Oct 23, 3:54 AM MDT | Winter Storm Warning | BOU | 27 hr |
| Oct 23, 3:54 AM MDT | Winter Weather Advisory | BOU | 27 hr |
| Oct 25, 1:52 PM MDT | Winter Storm Watch | BOU | 24 hr |
| Oct 26, 1:54 PM MDT | Winter Storm Warning | BOU | 43 hr |
| Oct 28, 2:26 PM MDT | Winter Storm Warning | BOU | 37 hr |
| Nov 6, 2:54 PM MST | Winter Weather Advisory | BOU | 12 hr |
| Nov 10, 2:55 PM MST | Winter Weather Advisory | BOU | 18 hr |
| Nov 20, 4:23 AM MST | Winter Weather Advisory | BOU | 14 hr |
| Nov 21, 4:11 AM MST | Winter Weather Advisory | BOU | 5 hr |
| Nov 24, 4:38 AM MST | Winter Storm Watch | BOU | 9 hr |
| Nov 24, 1:40 PM MST | Winter Storm Warning | BOU | 51 hr |
| Nov 25, 7:42 PM MST | Mesoscale Discussion | SPC | 6 hr |
| Nov 28, 3:00 AM MST | High Wind Watch | BOU | 24 hr |
| Nov 29, 2:55 AM MST | Winter Weather Advisory | BOU | 48 hr |
| Nov 29, 3:02 AM MST | High Wind Warning | BOU | 39 hr |
| Nov 29, 2:26 PM MST | Snow Squall Warning | BOU | 64 min |
| Dec 7, 2:51 PM MST | Winter Weather Advisory | BOU | 44 hr |
| Dec 11, 3:45 PM MST | Winter Storm Watch | BOU | 37 hr |
| Dec 12, 4:10 AM MST | Winter Storm Warning | BOU | 67 hr |
| Dec 27, 1:57 PM MST | Winter Weather Advisory | BOU | 34 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 | 1 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 15 |
| Special Weather Statement | 4 |
| Flooding | |
| Areal Flood Advisory | 1 |
| Winter | |
| Snow Squall Warning | 1 |
| Winter Storm Warning | 14 |
| Winter Storm Watch | 10 |
| Winter Weather Advisory | 28 |
| Wind and dust | |
| High Wind Warning | 7 |
| High Wind Watch | 4 |
| Fire | |
| Red Flag Warning | 11 |
| Fire Weather Watch | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.