Alert archive / Colorado / Morgan County
Weather alerts in Morgan County, Colorado, 2018
163 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Morgan County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 163
- Warnings
- 72
- Watches
- 26
- Advisories
- 10
- Busiest month
- July41 alerts
- Busiest day
- June 19, 201823 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 15 tornado warnings covering Morgan County in 2018 had a tornado report inside them; 3 of 7 tornado reports fell inside a warning, on average 13 minutes after it went out.
Morgan County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 15 | 1 | 93% | 7 | 43% | 13 min |
| Severe thunderstorm warnings | 35 | 12 | 66% | 16 | 81% | 21 min |
| Flash flood warnings | 5 | 2 | 60% | 4 | 100% | 38 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Denver/Boulder, CO: tornado warnings | 52 | 11 | 79% | 36 | 53% | 12 min |
| NWS Denver/Boulder, CO: severe thunderstorm warnings | 322 | 114 | 65% | 369 | 75% | 20 min |
| NWS Denver/Boulder, CO: flash flood warnings | 13 | 3 | 77% | 14 | 79% | 32 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 19, 1:54 PM MST | Winter Storm Watch | BOU | 16 hr |
| Jan 20, 5:24 AM MST | Winter Storm Warning | BOU | 36 hr |
| Feb 23, 3:13 AM MST | Winter Weather Advisory | BOU | 27 hr |
| Mar 3, 2:22 PM MST | High Wind Watch | BOU | 15 hr |
| Mar 3, 3:17 PM MST | Fire Weather Watch | BOU | 5 hr |
| Mar 3, 3:17 PM MST | Fire Weather Watch | BOU | 19 hr |
| Mar 3, 3:17 PM MST | Red Flag Warning | BOU | 28 hr |
| Mar 4, 5:22 AM MST | High Wind Warning | BOU | 36 hr |
| Mar 4, 9:49 AM MST | Red Flag Warning | BOU | 32 hr |
| Mar 15, 3:45 AM MDT | Winter Weather Advisory | BOU | 25 hr |
| Apr 1, 2:29 PM MDT | High Wind Watch | BOU | 23 hr |
| Apr 2, 1:25 PM MDT | Red Flag Warning | BOU | 29 hr |
| Apr 2, 1:46 PM MDT | High Wind Warning | BOU | 21 hr |
| Apr 10, 3:44 AM MDT | Red Flag Warning | BOU | 39 hr |
| Apr 10, 3:44 AM MDT | Red Flag Warning | BOU | 65 hr |
| Apr 11, 2:59 PM MDT | High Wind Watch | BOU | 19 hr |
| Apr 12, 9:49 AM MDT | High Wind Warning | BOU | 53 hr |
| Apr 16, 2:16 PM MDT | High Wind Watch | BOU | 18 hr |
| Apr 17, 4:58 AM MDT | High Wind Warning | BOU | 16 hr |
| Apr 18, 8:27 PM MDT | Red Flag Warning | BOU | 24 hr |
| May 1, 1:01 PM MDT | Mesoscale Discussion | SPC | 119 min |
| May 6, 5:02 PM MDT | Special Weather Statement | BOU | 43 min |
| May 6, 5:48 PM MDT | Special Weather Statement | BOU | 42 min |
| May 11, 10:58 PM MDT | Dense Fog Advisory | BOU | 10 hr |
| May 13, 4:19 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 12:38 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 4:19 PM MDT | Mesoscale Discussion | SPC | 116 min |
| May 18, 11:02 AM MDT | Flash Flood Watch | BOU | 30 hr |
| May 18, 3:06 PM MDT | Mesoscale Discussion | SPC | 114 min |
| May 18, 8:20 PM MDT | Special Weather Statement | BOU | 55 min |
| May 21, 3:00 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 21, 7:53 PM MDT | Special Weather Statement | BOU | 52 min |
| May 21, 8:14 PM MDT | Severe Thunderstorm Warning | BOU | 46 min |
| May 23, 1:00 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 1:31 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 23, 5:07 PM MDT | Mesoscale Discussion | SPC | 83 min |
| May 27, 1:13 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 27, 2:44 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| May 27, 3:06 PM MDT | Tornado Warning | BOU | 24 min |
| May 27, 4:28 PM MDT | Tornado Warning | BOU | 17 min |
| May 27, 4:30 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 4:37 PM MDT | Tornado Warning | BOU | 23 min |
| May 27, 4:58 PM MDT | Tornado Warning | BOU | 18 min |
| May 28, 1:39 PM MDT | Mesoscale Discussion | SPC | 96 min |
| May 28, 2:01 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 28, 2:38 PM MDT | Flash Flood Watch | BOU | 6 hr |
| May 28, 5:11 PM MDT | Tornado Warning | BOU | 34 min |
| May 28, 5:47 PM MDT | Tornado Warning | BOU | 28 min |
| May 28, 6:08 PM MDT | Mesoscale Discussion | SPC | 97 min |
| May 28, 6:35 PM MDT | Tornado Warning | BOU | 25 min |
| May 30, 1:25 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 30, 8:09 PM MDT | Severe Thunderstorm Warning | BOU | 20 min |
| Jun 4, 4:40 PM MDT | Special Weather Statement | BOU | 50 min |
| Jun 6, 2:49 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 6, 4:46 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 6, 4:48 PM MDT | Severe Thunderstorm Warning | BOU | 42 min |
| Jun 6, 5:19 PM MDT | Severe Thunderstorm Warning | BOU | 26 min |
| Jun 6, 5:41 PM MDT | Severe Thunderstorm Warning | BOU | 49 min |
| Jun 15, 4:47 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jun 18, 3:06 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jun 18, 6:37 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 18, 8:02 PM MDT | Severe Thunderstorm Warning | BOU | 28 min |
| Jun 18, 8:27 PM MDT | Severe Thunderstorm Warning | BOU | 33 min |
| Jun 18, 8:31 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jun 18, 9:17 PM MDT | Severe Thunderstorm Warning | BOU | 28 min |
| Jun 18, 9:28 PM MDT | Severe Thunderstorm Warning | BOU | 32 min |
| Jun 18, 9:42 PM MDT | Severe Thunderstorm Warning | BOU | 48 min |
| Jun 18, 9:59 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| Jun 18, 10:05 PM MDT | Areal Flood Advisory | BOU | 2 hr |
| Jun 18, 10:11 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 18, 10:24 PM MDT | Severe Thunderstorm Warning | BOU | 51 min |
| Jun 18, 10:57 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jun 18, 11:32 PM MDT | Severe Thunderstorm Warning | BOU | 43 min |
| Jun 19, 1:11 AM MDT | Flash Flood Warning | BOU | 5 hr |
| Jun 19, 11:48 AM MDT | Mesoscale Discussion | SPC | 117 min |
| Jun 19, 12:25 PM MDT | Tornado Watch | SPC | 7 hr |
| Jun 19, 1:54 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 19, 2:13 PM MDT | Severe Thunderstorm Warning | BOU | 47 min |
| Jun 19, 2:20 PM MDT | Tornado Warning | BOU | 25 min |
| Jun 19, 2:36 PM MDT | Flash Flood Warning | BOU | 114 min |
| Jun 19, 2:45 PM MDT | Tornado Warning | BOU | 30 min |
| Jun 19, 4:10 PM MDT | Severe Thunderstorm Warning | BOU | 50 min |
| Jun 19, 4:51 PM MDT | Tornado Warning | BOU | 24 min |
| Jun 19, 6:05 PM MDT | Severe Thunderstorm Warning | BOU | 40 min |
| Jun 19, 6:21 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Jun 24, 12:03 AM MDT | Special Weather Statement | BOU | 42 min |
| Jun 24, 1:16 AM MDT | Mesoscale Discussion | SPC | 59 min |
| Jun 24, 12:51 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Jun 30, 1:03 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jun 30, 2:03 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 30, 4:40 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 5:13 PM MDT | Severe Thunderstorm Warning | BOU | 33 min |
| Jul 3, 6:36 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Jul 4, 1:51 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Jul 4, 7:15 PM MDT | Special Weather Statement | BOU | 45 min |
| Jul 4, 8:09 PM MDT | Severe Thunderstorm Warning | BOU | 51 min |
| Jul 4, 8:41 PM MDT | Severe Thunderstorm Warning | BOU | 49 min |
| Jul 4, 8:56 PM MDT | Severe Thunderstorm Warning | BOU | 49 min |
| Jul 4, 9:26 PM MDT | Severe Thunderstorm Warning | BOU | 20 min |
| Jul 16, 7:23 PM MDT | Areal Flood Advisory | BOU | 3 hr |
| Jul 17, 2:47 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jul 17, 3:09 PM MDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 17, 5:49 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Jul 17, 6:48 PM MDT | Severe Thunderstorm Warning | BOU | 16 min |
| Jul 17, 7:44 PM MDT | Special Weather Statement | BOU | 61 min |
| Jul 21, 12:50 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 3:44 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 7:35 PM MDT | Severe Thunderstorm Warning | BOU | 40 min |
| Jul 24, 7:55 PM MDT | Severe Thunderstorm Warning | BOU | 50 min |
| Jul 24, 8:12 PM MDT | Severe Thunderstorm Warning | BOU | 48 min |
| Jul 24, 8:15 PM MDT | Severe Thunderstorm Warning | BOU | 45 min |
| Jul 24, 8:47 PM MDT | Areal Flood Advisory | BOU | 2 hr |
| Jul 24, 9:10 PM MDT | Severe Thunderstorm Warning | BOU | 50 min |
| Jul 24, 9:27 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jul 25, 10:41 AM MDT | Flash Flood Watch | BOU | 11 hr |
| Jul 25, 1:22 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 25, 5:08 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 25, 5:16 PM MDT | Severe Thunderstorm Warning | BOU | 17 min |
| Jul 26, 12:49 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jul 26, 1:49 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 26, 6:07 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 27, 12:35 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jul 27, 1:04 PM MDT | Tornado Watch | SPC | 8 hr |
| Jul 27, 3:26 PM MDT | Tornado Warning | BOU | 34 min |
| Jul 27, 3:45 PM MDT | Severe Thunderstorm Warning | BOU | 25 min |
| Jul 29, 12:46 PM MDT | Mesoscale Discussion | SPC | 59 min |
| Jul 29, 1:07 PM MDT | Tornado Watch | SPC | 8 hr |
| Jul 29, 4:10 PM MDT | Tornado Warning | BOU | 35 min |
| Jul 29, 4:26 PM MDT | Tornado Warning | BOU | 34 min |
| Jul 29, 4:37 PM MDT | Tornado Warning | BOU | 23 min |
| Jul 29, 4:58 PM MDT | Severe Thunderstorm Warning | BOU | 25 min |
| Jul 29, 5:01 PM MDT | Tornado Warning | BOU | 44 min |
| Jul 29, 5:23 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Aug 6, 2:02 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Aug 6, 2:37 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 6, 4:27 PM MDT | Severe Thunderstorm Warning | BOU | 48 min |
| Aug 6, 5:12 PM MDT | Severe Thunderstorm Warning | BOU | 48 min |
| Aug 6, 5:24 PM MDT | Mesoscale Discussion | SPC | 66 min |
| Aug 6, 5:56 PM MDT | Severe Thunderstorm Warning | BOU | 22 min |
| Aug 6, 8:06 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Aug 7, 12:59 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 7:57 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 8, 7:28 AM MDT | Severe Thunderstorm Warning | BOU | 47 min |
| Aug 8, 8:17 AM MDT | Special Weather Statement | BOU | 28 min |
| Aug 14, 5:31 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Aug 17, 2:56 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 17, 4:08 PM MDT | Areal Flood Advisory | BOU | 97 min |
| Aug 17, 4:31 PM MDT | Special Weather Statement | BOU | 44 min |
| Aug 17, 4:41 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Aug 17, 5:42 PM MDT | Areal Flood Advisory | BOU | 93 min |
| Aug 26, 3:58 AM MDT | Fire Weather Watch | BOU | 12 hr |
| Aug 26, 3:35 PM MDT | Red Flag Warning | BOU | 26 hr |
| Sep 24, 2:24 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 7, 2:30 PM MDT | Freeze Watch | BOU | 25 hr |
| Oct 8, 3:01 PM MDT | Freeze Warning | BOU | 13 hr |
| Oct 9, 4:25 AM MDT | Freeze Warning | BOU | 30 hr |
| Oct 10, 2:27 PM MDT | Freeze Warning | BOU | 19 hr |
| Oct 12, 2:20 PM MDT | Winter Weather Advisory | BOU | 49 hr |
| Nov 16, 10:36 AM MST | Winter Weather Advisory | BOU | 34 hr |
| Nov 24, 5:39 AM MST | High Wind Warning | BOU | 19 hr |
| Dec 17, 3:32 PM MST | High Wind Watch | BOU | 18 hr |
| Dec 18, 9:57 AM MST | High Wind Warning | BOU | 31 hr |
| Dec 22, 6:36 AM MST | Special Weather Statement | BOU | 54 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 | |
| Severe Thunderstorm Warning | 35 |
| Tornado Warning | 15 |
| Severe Thunderstorm Watch | 10 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 44 |
| Special Weather Statement | 11 |
| Flooding | |
| Flash Flood Warning | 5 |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 5 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 4 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 1 |
| Wind and dust | |
| High Wind Warning | 6 |
| High Wind Watch | 5 |
| Fire | |
| Red Flag Warning | 7 |
| Fire Weather Watch | 3 |
| 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 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. Warning verification from the Mesonet's Cow. Rebuilt daily.