Alert archive / Colorado / Sedgwick County
Weather alerts in Sedgwick County, Colorado, 2019
128 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sedgwick County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 128
- Warnings
- 29
- Watches
- 24
- Advisories
- 28
- Busiest month
- August27 alerts
- Busiest day
- May 27, 20196 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 3 tornado warnings covering Sedgwick County in 2019 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.
Sedgwick County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 1 | 0% | |
| Severe thunderstorm warnings | 17 | 5 | 71% | 8 | 63% | 14 min |
| 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 13, 2:32 AM MST | Dense Fog Advisory | BOU | 5 hr |
| Jan 20, 3:01 PM MST | Winter Storm Watch | BOU | 20 hr |
| Jan 20, 3:01 PM MST | Winter Weather Advisory | BOU | 42 hr |
| Feb 5, 4:11 AM MST | Winter Weather Advisory | BOU | 48 hr |
| Feb 7, 3:49 AM MST | Wind Chill Advisory | BOU | 7 hr |
| Feb 20, 3:59 PM MST | Winter Weather Advisory | BOU | 66 hr |
| Feb 21, 3:17 PM MST | Winter Storm Watch | BOU | 19 hr |
| Feb 28, 5:33 PM MST | Winter Weather Advisory | BOU | 58 hr |
| Mar 3, 3:36 AM MST | Wind Chill Advisory | BOU | 5 hr |
| Mar 3, 3:36 AM MST | Wind Chill Advisory | BOU | 29 hr |
| Mar 11, 6:48 AM MDT | Winter Storm Watch | BOU | 28 hr |
| Mar 11, 3:24 PM MDT | Blizzard Warning | BOU | 68 hr |
| Mar 13, 5:26 PM MDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 14, 11:52 AM MDT | Winter Weather Advisory | BOU | 6 hr |
| Apr 4, 4:43 AM MDT | Dense Fog Advisory | BOU | 4 hr |
| Apr 8, 3:10 PM MDT | Winter Storm Watch | BOU | 21 hr |
| Apr 9, 11:47 AM MDT | Blizzard Warning | BOU | 47 hr |
| Apr 10, 8:31 PM MDT | Winter Weather Advisory | BOU | 22 hr |
| Apr 26, 5:48 PM MDT | Special Weather Statement | BOU | 57 min |
| Apr 28, 1:11 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 28, 1:46 PM MDT | Special Weather Statement | BOU | 59 min |
| Apr 28, 2:23 PM MDT | Severe Thunderstorm Warning | BOU | 52 min |
| Apr 28, 3:11 PM MDT | Severe Thunderstorm Warning | BOU | 49 min |
| May 7, 1:01 AM MDT | Dense Fog Advisory | BOU | 7 hr |
| May 7, 8:53 PM MDT | Dense Fog Advisory | BOU | 12 hr |
| May 8, 3:50 PM MDT | Freeze Watch | BOU | 24 hr |
| May 9, 4:03 PM MDT | Frost Advisory | BOU | 16 hr |
| May 10, 2:51 PM MDT | Frost Advisory | BOU | 18 hr |
| May 11, 5:45 PM MDT | Frost Advisory | BOU | 14 hr |
| May 17, 12:54 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 17, 3:18 PM MDT | Severe Thunderstorm Warning | BOU | 28 min |
| May 17, 3:55 PM MDT | Severe Thunderstorm Warning | BOU | 50 min |
| May 17, 4:07 PM MDT | Mesoscale Discussion | SPC | 113 min |
| May 17, 5:23 PM MDT | Severe Thunderstorm Warning | BOU | 8 min |
| May 18, 2:49 PM MDT | Frost Advisory | BOU | 17 hr |
| May 21, 12:01 PM MDT | Freeze Warning | BOU | 19 hr |
| May 27, 12:36 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 12:56 PM MDT | Tornado Watch | SPC | 8 hr |
| May 27, 4:28 PM MDT | Tornado Warning | BOU | 47 min |
| May 27, 4:55 PM MDT | Areal Flood Advisory | BOU | 65 min |
| May 27, 4:55 PM MDT | Tornado Warning | BOU | 35 min |
| May 27, 5:26 PM MDT | Tornado Warning | BOU | 32 min |
| Jun 2, 5:24 PM MDT | Mesoscale Discussion | SPC | 66 min |
| Jun 2, 8:20 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jun 3, 1:31 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jun 3, 1:53 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 4, 12:59 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 8, 1:18 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jun 16, 1:38 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 17, 12:04 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 17, 4:30 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Jun 17, 6:23 PM MDT | Areal Flood Advisory | BOU | 3 hr |
| Jun 20, 4:04 PM MDT | Tornado Watch | SPC | 6 hr |
| Jun 20, 8:05 PM MDT | Special Weather Statement | BOU | 25 min |
| Jun 26, 2:36 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 4:37 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 1, 9:56 PM MDT | Special Weather Statement | BOU | 49 min |
| Jul 4, 3:01 PM MDT | Tornado Watch | SPC | 7 hr |
| Jul 4, 5:40 PM MDT | Mesoscale Discussion | SPC | 95 min |
| Jul 4, 7:54 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 8:44 PM MDT | Mesoscale Discussion | SPC | 76 min |
| Jul 4, 9:08 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 5, 12:43 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 9:52 PM MDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 8, 3:24 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 8, 5:50 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Jul 12, 6:15 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 6:47 PM MDT | Severe Thunderstorm Warning | BOU | 22 min |
| Jul 12, 7:33 PM MDT | Severe Thunderstorm Warning | BOU | 42 min |
| Jul 15, 9:11 PM MDT | Special Weather Statement | BOU | 49 min |
| Jul 16, 8:25 PM MDT | Special Weather Statement | BOU | 50 min |
| Jul 26, 1:30 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 26, 5:32 PM MDT | Severe Thunderstorm Warning | BOU | 58 min |
| Jul 27, 1:50 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 27, 7:37 PM MDT | Severe Thunderstorm Warning | BOU | 23 min |
| Aug 1, 1:55 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 1, 4:37 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Aug 8, 12:41 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Aug 10, 2:38 PM MDT | Severe Thunderstorm Warning | BOU | 37 min |
| Aug 10, 3:34 PM MDT | Special Weather Statement | BOU | 26 min |
| Aug 10, 3:49 PM MDT | Special Weather Statement | BOU | 26 min |
| Aug 10, 5:32 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Aug 11, 12:54 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 1:24 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 11, 5:05 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Aug 11, 7:32 PM MDT | Severe Thunderstorm Warning | BOU | 28 min |
| Aug 13, 11:32 AM MDT | Mesoscale Discussion | SPC | 118 min |
| Aug 13, 11:49 AM MDT | Tornado Watch | SPC | 7 hr |
| Aug 13, 12:36 PM MDT | Severe Thunderstorm Warning | BOU | 24 min |
| Aug 13, 1:53 PM MDT | Severe Thunderstorm Warning | BOU | 37 min |
| Aug 13, 2:04 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Aug 14, 1:54 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 3:00 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 15, 5:46 PM MDT | Severe Thunderstorm Warning | BOU | 22 min |
| Aug 16, 1:40 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Aug 16, 2:54 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 16, 5:27 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 7:43 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 17, 1:34 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Aug 20, 10:34 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Aug 21, 12:04 AM MDT | Special Weather Statement | BOU | 41 min |
| Aug 23, 2:34 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 11, 1:28 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Sep 11, 2:31 PM MDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Sep 11, 7:01 PM MDT | Severe Thunderstorm Warning | BOU | 13 min |
| Sep 11, 7:11 PM MDT | Severe Thunderstorm Warning | BOU | 38 min |
| Sep 11, 7:14 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 11, 7:48 PM MDT | Severe Thunderstorm Warning | BOU | 27 min |
| Oct 2, 2:26 AM MDT | Frost Advisory | BOU | 30 hr |
| Oct 6, 3:37 AM MDT | Frost Advisory | BOU | 28 hr |
| Oct 9, 4:18 AM MDT | Freeze Warning | BOU | 29 hr |
| Oct 20, 2:49 AM MDT | High Wind Warning | BOU | 16 hr |
| Oct 28, 2:26 PM MDT | Winter Weather Advisory | BOU | 43 hr |
| Nov 10, 2:55 PM MST | Winter Weather Advisory | BOU | 18 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 24, 1:40 PM MST | Winter Weather Advisory | BOU | 51 hr |
| Nov 26, 1:34 AM MST | Mesoscale Discussion | SPC | 5 hr |
| Nov 26, 4:16 AM MST | Blizzard Warning | BOU | 8 hr |
| Nov 26, 9:58 AM MST | Mesoscale Discussion | SPC | 6 hr |
| Nov 28, 3:00 AM MST | High Wind Watch | BOU | 24 hr |
| Nov 29, 1:44 AM MST | Dense Fog Advisory | BOU | 9 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, 5:39 PM MST | Dense Fog Advisory | BOU | 6 hr |
| Dec 6, 3:20 AM MST | Dense Fog Advisory | BOU | 6 hr |
| Dec 26, 3:36 AM MST | Winter Storm Watch | BOU | 34 hr |
| Dec 27, 1:57 PM MST | Winter Storm Warning | 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 | 17 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 12 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 38 |
| Special Weather Statement | 9 |
| Flooding | |
| Areal Flood Advisory | 2 |
| Winter | |
| Blizzard Warning | 3 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 6 |
| Winter Weather Advisory | 10 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 6 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
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.