Alert archive / Colorado / Sedgwick County
Weather alerts in Sedgwick County, Colorado, 2015
118 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 118
- Warnings
- 22
- Watches
- 22
- Advisories
- 17
- Busiest month
- May26 alerts
- Busiest day
- April 23, 20155 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 2015 had a tornado report inside them.
Sedgwick County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 0 | ||
| Severe thunderstorm warnings | 9 | 3 | 67% | 5 | 40% | 38 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Denver/Boulder, CO: tornado warnings | 59 | 12 | 80% | 29 | 52% | 13 min |
| NWS Denver/Boulder, CO: severe thunderstorm warnings | 193 | 70 | 64% | 208 | 67% | 15 min |
| NWS Denver/Boulder, CO: flash flood warnings | 33 | 5 | 85% | 9 | 100% | 37 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 2, 3:37 PM MST | Winter Weather Advisory | BOU | 29 hr |
| Jan 3, 9:12 PM MST | Wind Chill Advisory | BOU | 12 hr |
| Feb 20, 12:53 PM MST | Winter Weather Advisory | BOU | 58 hr |
| Mar 16, 3:39 AM MDT | Red Flag Warning | BOU | 14 hr |
| Mar 22, 2:56 PM MDT | Fire Weather Watch | BOU | 24 hr |
| Mar 23, 2:40 PM MDT | Red Flag Warning | BOU | 27 hr |
| Apr 11, 2:39 PM MDT | Fire Weather Watch | BOU | 7 hr |
| Apr 11, 9:10 PM MDT | Red Flag Warning | BOU | 22 hr |
| Apr 13, 2:45 PM MDT | Red Flag Warning | BOU | 29 hr |
| Apr 15, 1:41 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 15, 4:49 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 17, 4:05 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 17, 4:37 PM MDT | Tornado Watch | SPC | 7 hr |
| Apr 17, 6:06 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Apr 17, 7:56 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Apr 18, 2:08 PM MDT | Tornado Watch | SPC | 6 hr |
| Apr 18, 5:07 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Apr 18, 7:27 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Apr 23, 1:10 PM MDT | Mesoscale Discussion | SPC | 95 min |
| Apr 23, 4:55 PM MDT | Special Weather Statement | BOU | 35 min |
| Apr 23, 5:05 PM MDT | Severe Thunderstorm Warning | BOU | 25 min |
| Apr 23, 5:29 PM MDT | Tornado Warning | BOU | 31 min |
| Apr 23, 5:37 PM MDT | Severe Thunderstorm Warning | BOU | 23 min |
| Apr 23, 6:00 PM MDT | Tornado Warning | BOU | 30 min |
| Apr 23, 6:30 PM MDT | Severe Thunderstorm Warning | BOU | 30 min |
| May 5, 8:28 AM MDT | Dense Fog Advisory | BOU | 4 hr |
| May 8, 11:08 AM MDT | Areal Flood Advisory | BOU | 60 hr |
| May 9, 11:55 AM MDT | Tornado Watch | SPC | 11 hr |
| May 9, 12:23 PM MDT | River Flood Warning | BOU | 8 days |
| May 9, 1:07 PM MDT | Winter Weather Advisory | BOU | 20 hr |
| May 9, 2:34 PM MDT | Mesoscale Discussion | SPC | 56 min |
| May 9, 5:16 PM MDT | Mesoscale Discussion | SPC | 119 min |
| May 10, 5:26 AM MDT | Frost Advisory | BOU | 26 hr |
| May 11, 8:57 PM MDT | Frost Advisory | BOU | 7 hr |
| May 15, 12:14 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 15, 12:58 PM MDT | Tornado Watch | SPC | 7 hr |
| May 15, 5:28 PM MDT | Mesoscale Discussion | SPC | 62 min |
| May 15, 6:22 PM MDT | Severe Thunderstorm Warning | BOU | 38 min |
| May 15, 6:45 PM MDT | Tornado Warning | BOU | 45 min |
| May 16, 12:51 PM MDT | Special Weather Statement | BOU | 39 min |
| May 19, 6:52 AM MDT | Areal Flood Advisory | BOU | 8 hr |
| May 23, 5:41 AM MDT | Flash Flood Watch | BOU | 18 hr |
| May 23, 12:54 PM MDT | Tornado Watch | SPC | 6 hr |
| May 24, 4:44 AM MDT | Flash Flood Watch | BOU | 14 hr |
| May 27, 12:55 PM MDT | Mesoscale Discussion | SPC | 95 min |
| May 27, 3:36 PM MDT | Severe Thunderstorm Warning | BOU | 22 min |
| May 27, 5:00 PM MDT | Severe Thunderstorm Warning | BOU | 19 min |
| May 28, 12:39 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 28, 1:18 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 29, 1:30 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 31, 2:50 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Jun 2, 12:49 AM MDT | Special Weather Statement | BOU | 41 min |
| Jun 2, 1:07 AM MDT | Areal Flood Advisory | BOU | 2 hr |
| Jun 3, 2:01 AM MDT | Mesoscale Discussion | SPC | 89 min |
| Jun 5, 4:27 AM MDT | Flash Flood Watch | BOU | 18 hr |
| Jun 5, 4:44 PM MDT | Tornado Watch | SPC | 7 hr |
| Jun 6, 2:14 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jun 6, 4:25 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 6, 6:55 PM MDT | Mesoscale Discussion | SPC | 95 min |
| Jun 7, 1:36 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jun 7, 3:21 PM MDT | Special Weather Statement | BOU | 39 min |
| Jun 11, 12:16 PM MDT | River Flood Advisory | BOU | 8 days |
| Jun 16, 1:12 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 2:44 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 16, 4:53 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jun 16, 9:28 PM MDT | Mesoscale Discussion | SPC | 62 min |
| Jun 18, 2:49 AM MDT | Mesoscale Discussion | SPC | 116 min |
| Jun 25, 2:10 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Jun 25, 2:30 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 25, 4:25 PM MDT | Mesoscale Discussion | SPC | 95 min |
| Jun 25, 5:22 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Jun 30, 11:01 PM MDT | Special Weather Statement | BOU | 59 min |
| Jul 4, 4:18 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Jul 11, 5:51 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Jul 14, 2:20 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jul 15, 7:34 PM MDT | Special Weather Statement | BOU | 56 min |
| Jul 17, 5:02 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jul 18, 3:29 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 4:43 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 6:59 PM MDT | Special Weather Statement | BOU | 46 min |
| Jul 19, 7:47 PM MDT | Special Weather Statement | BOU | 28 min |
| Jul 23, 1:34 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jul 23, 4:08 PM MDT | Special Weather Statement | BOU | 52 min |
| Jul 25, 4:22 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 12:30 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 1:07 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 26, 4:22 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Jul 27, 3:57 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 1, 6:30 PM MDT | Special Weather Statement | BOU | 45 min |
| Aug 4, 9:55 AM MDT | Special Weather Statement | BOU | 65 min |
| Aug 4, 10:58 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 5, 6:21 PM MDT | Severe Thunderstorm Warning | BOU | 24 min |
| Aug 7, 2:12 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 7, 3:05 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 7, 6:27 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 5:42 AM MDT | Flash Flood Watch | BOU | 15 hr |
| Aug 17, 6:44 PM MDT | Severe Thunderstorm Warning | BOU | 46 min |
| Aug 17, 7:26 PM MDT | Severe Thunderstorm Warning | BOU | 14 min |
| Sep 7, 4:46 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Sep 22, 5:06 PM MDT | Special Weather Statement | BOU | 24 min |
| Oct 6, 6:45 AM MDT | Dense Fog Advisory | BOU | 3 hr |
| Oct 11, 3:11 AM MDT | Red Flag Warning | BOU | 15 hr |
| Oct 14, 12:25 PM MDT | Freeze Watch | BOU | 16 hr |
| Oct 15, 4:25 AM MDT | Frost Advisory | BOU | 29 hr |
| Oct 20, 8:46 PM MDT | Special Weather Statement | BOU | 44 min |
| Oct 23, 3:54 AM MDT | Frost Advisory | BOU | 28 hr |
| Oct 27, 3:13 AM MDT | Frost Advisory | BOU | 29 hr |
| Oct 28, 3:04 PM MDT | Freeze Warning | BOU | 18 hr |
| Nov 9, 3:05 PM MST | Blizzard Watch | BOU | 14 hr |
| Nov 10, 5:05 AM MST | Blizzard Warning | BOU | 30 hr |
| Nov 11, 1:27 AM MST | Mesoscale Discussion | SPC | 6 hr |
| Nov 15, 3:36 PM MST | Blizzard Watch | BOU | 14 hr |
| Nov 16, 5:57 AM MST | Blizzard Warning | BOU | 32 hr |
| Nov 16, 4:56 PM MST | Special Weather Statement | LBF | 49 min |
| Nov 25, 10:25 AM MST | Winter Weather Advisory | BOU | 42 hr |
| Dec 14, 3:45 AM MST | Winter Storm Watch | BOU | 11 hr |
| Dec 14, 3:12 PM MST | Winter Storm Warning | BOU | 26 hr |
| Dec 23, 3:14 AM MST | Dense Fog Advisory | BOU | 7 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20142016
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.