Alert archive / Colorado / Sedgwick County
Weather alerts in Sedgwick County, Colorado, 2009
139 weather alerts in 2009, 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 2009. Tap one for its archive.
- Alerts
- 139
- Warnings
- 44
- Watches
- 26
- Advisories
- 9
- Busiest month
- June41 alerts
- Busiest day
- June 26, 200910 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 6 tornado warnings covering Sedgwick County in 2009 had a tornado report inside them.
Sedgwick County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 6 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 20 | 10 | 50% | 6 | 83% | 24 min |
| Flash flood warnings | 2 | 1 | 50% | 0 |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Denver/Boulder, CO: tornado warnings | 81 | 16 | 80% | 45 | 44% | 12 min |
| NWS Denver/Boulder, CO: severe thunderstorm warnings | 279 | 128 | 54% | 321 | 70% | 17 min |
| NWS Denver/Boulder, CO: flash flood warnings | 19 | 6 | 68% | 13 | 62% | 43 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 12, 4:13 AM MST | High Wind Warning | BOU | 11 hr |
| Jan 19, 10:21 AM MST | Red Flag Warning | BOU | 7 hr |
| Feb 5, 2:08 PM MST | Fire Weather Watch | BOU | 15 hr |
| Feb 5, 2:08 PM MST | Red Flag Warning | BOU | 29 hr |
| Feb 11, 2:42 PM MST | Winter Storm Watch | BOU | 19 hr |
| Feb 12, 9:44 AM MST | Winter Storm Warning | BOU | 25 hr |
| Mar 3, 3:01 PM MST | Fire Weather Watch | BOU | 24 hr |
| Mar 4, 2:42 PM MST | Red Flag Warning | BOU | 27 hr |
| Mar 21, 2:59 AM MDT | Dense Fog Advisory | BOU | 7 hr |
| Mar 21, 5:23 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Mar 22, 4:38 AM MDT | Winter Weather Advisory | BOU | 33 hr |
| Mar 23, 1:38 PM MDT | High Wind Warning | BOU | 28 hr |
| Mar 25, 11:47 AM MDT | Winter Storm Warning | BOU | 29 hr |
| Mar 26, 2:57 AM MDT | Blizzard Warning | BOU | 33 hr |
| Mar 26, 4:46 PM MDT | Winter Weather Advisory | BOU | 13 hr |
| Mar 30, 5:32 PM MDT | High Wind Warning | BOU | 4 hr |
| Apr 2, 4:20 AM MDT | Winter Storm Watch | BOU | 32 hr |
| Apr 3, 11:50 AM MDT | Blizzard Warning | BOU | 42 hr |
| Apr 4, 10:25 AM MDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 29, 10:16 PM MDT | Severe Thunderstorm Warning | BOU | 44 min |
| May 20, 2:01 PM MDT | Mesoscale Discussion | SPC | 89 min |
| May 24, 6:31 PM MDT | Mesoscale Discussion | SPC | 119 min |
| May 25, 12:43 PM MDT | Special Weather Statement | BOU | 92 min |
| Jun 5, 2:48 PM MDT | Tornado Watch | SPC | 7 hr |
| Jun 5, 5:37 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Jun 6, 7:48 PM MDT | Special Weather Statement | BOU | 27 min |
| Jun 6, 8:18 PM MDT | Severe Thunderstorm Warning | BOU | 42 min |
| Jun 7, 12:08 AM MDT | Severe Thunderstorm Warning | BOU | 38 min |
| Jun 7, 12:35 AM MDT | Mesoscale Discussion | SPC | 55 min |
| Jun 7, 2:30 PM MDT | Mesoscale Discussion | SPC | 60 min |
| Jun 9, 4:51 PM MDT | Tornado Warning | BOU | 39 min |
| Jun 10, 6:16 PM MDT | Mesoscale Discussion | SPC | 59 min |
| Jun 12, 4:04 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 12, 6:56 PM MDT | Mesoscale Discussion | SPC | 64 min |
| Jun 13, 6:42 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Jun 14, 1:50 PM MDT | Tornado Watch | SPC | 7 hr |
| Jun 14, 4:48 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Jun 15, 2:34 PM MDT | Tornado Watch | SPC | 8 hr |
| Jun 15, 4:03 PM MDT | Areal Flood Advisory | BOU | 87 min |
| Jun 15, 4:24 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jun 15, 4:54 PM MDT | Severe Thunderstorm Warning | BOU | 20 min |
| Jun 17, 2:30 PM MDT | Tornado Watch | SPC | 8 hr |
| Jun 17, 4:43 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jun 17, 9:34 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jun 17, 10:01 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 18, 12:46 AM MDT | Mesoscale Discussion | SPC | 89 min |
| Jun 18, 10:12 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jun 18, 10:38 PM MDT | Severe Thunderstorm Warning | BOU | 43 min |
| Jun 18, 11:19 PM MDT | Severe Thunderstorm Warning | BOU | 26 min |
| Jun 23, 1:39 PM MDT | Mesoscale Discussion | SPC | 111 min |
| Jun 23, 8:00 PM MDT | Severe Thunderstorm Warning | BOU | 60 min |
| Jun 23, 8:44 PM MDT | Tornado Warning | BOU | 33 min |
| Jun 25, 1:06 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Jun 25, 8:09 PM MDT | Severe Thunderstorm Warning | BOU | 35 min |
| Jun 26, 2:23 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Jun 26, 2:30 PM MDT | Tornado Warning | BOU | 45 min |
| Jun 26, 2:38 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 26, 3:00 PM MDT | Tornado Warning | BOU | 45 min |
| Jun 26, 3:35 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jun 26, 3:43 PM MDT | Tornado Warning | BOU | 47 min |
| Jun 26, 3:50 PM MDT | Tornado Watch | SPC | 7 hr |
| Jun 26, 5:07 PM MDT | Severe Thunderstorm Warning | BOU | 53 min |
| Jun 26, 5:56 PM MDT | Severe Thunderstorm Warning | BOU | 50 min |
| Jun 26, 6:14 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jul 1, 4:29 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jul 1, 6:38 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 1, 9:19 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jul 2, 6:29 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jul 3, 2:48 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 3, 4:54 PM MDT | Special Weather Statement | BOU | 51 min |
| Jul 3, 5:25 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Jul 3, 8:43 PM MDT | Mesoscale Discussion | SPC | 32 min |
| Jul 5, 6:15 PM MDT | Mesoscale Discussion | SPC | 60 min |
| Jul 6, 7:07 PM MDT | Mesoscale Discussion | SPC | 23 min |
| Jul 6, 7:50 PM MDT | Severe Thunderstorm Warning | BOU | 40 min |
| Jul 7, 4:47 PM MDT | Mesoscale Discussion | SPC | 58 min |
| Jul 10, 5:20 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jul 11, 12:28 AM MDT | Mesoscale Discussion | SPC | 62 min |
| Jul 11, 3:35 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Jul 11, 3:56 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 12, 8:22 PM MDT | Severe Thunderstorm Warning | BOU | 39 min |
| Jul 13, 6:32 PM MDT | Mesoscale Discussion | SPC | 58 min |
| Jul 16, 1:08 AM MDT | Special Weather Statement | BOU | 37 min |
| Jul 16, 1:27 AM MDT | Special Weather Statement | BOU | 33 min |
| Jul 17, 12:59 PM MDT | Tornado Watch | SPC | 6 hr |
| Jul 17, 5:35 PM MDT | Special Weather Statement | BOU | 25 min |
| Jul 17, 5:43 PM MDT | Tornado Warning | BOU | 34 min |
| Jul 17, 6:32 PM MDT | Mesoscale Discussion | SPC | 58 min |
| Jul 18, 2:12 AM MDT | Mesoscale Discussion | SPC | 93 min |
| Jul 20, 2:07 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Jul 20, 2:25 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 20, 4:53 PM MDT | Severe Thunderstorm Warning | BOU | 28 min |
| Jul 20, 5:01 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Jul 22, 1:16 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Jul 22, 1:55 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 22, 5:47 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jul 23, 2:30 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 3:57 PM MDT | Severe Thunderstorm Warning | BOU | 48 min |
| Jul 24, 2:03 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jul 24, 7:10 PM MDT | Severe Thunderstorm Warning | BOU | 50 min |
| Jul 24, 7:52 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Jul 24, 7:55 PM MDT | Severe Thunderstorm Warning | BOU | 50 min |
| Aug 3, 6:46 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Aug 5, 3:51 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Aug 6, 7:05 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Aug 6, 7:28 PM MDT | Severe Thunderstorm Warning | BOU | 62 min |
| Aug 7, 5:37 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Aug 8, 3:34 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Aug 8, 7:29 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 10, 1:29 AM MDT | Mesoscale Discussion | SPC | 61 min |
| Aug 10, 1:49 AM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 10, 1:07 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Aug 10, 4:43 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 12, 1:22 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Aug 14, 1:32 PM MDT | Mesoscale Discussion | SPC | 58 min |
| Aug 15, 4:10 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Aug 16, 6:12 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Aug 18, 6:05 PM MDT | Severe Thunderstorm Warning | BOU | 40 min |
| Aug 26, 5:21 PM MDT | Severe Thunderstorm Warning | BOU | 42 min |
| Aug 26, 5:59 PM MDT | Severe Thunderstorm Warning | BOU | 61 min |
| Sep 8, 1:53 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 8, 6:10 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 29, 3:27 PM MDT | Fire Weather Watch | BOU | 14 hr |
| Sep 30, 5:00 AM MDT | Red Flag Warning | BOU | 15 hr |
| Oct 1, 3:05 AM MDT | High Wind Warning | BOU | 17 hr |
| Oct 2, 3:38 PM MDT | Freeze Warning | BOU | 16 hr |
| Oct 9, 9:24 PM MDT | Winter Weather Advisory | BOU | 12 hr |
| Oct 9, 10:20 PM MDT | Mesoscale Discussion | SPC | 4 hr |
| Oct 27, 3:26 AM MDT | Winter Storm Watch | BOU | 25 hr |
| Oct 27, 3:26 AM MDT | Winter Storm Warning | BOU | 69 hr |
| Oct 28, 9:56 PM MDT | Mesoscale Discussion | SPC | 4 hr |
| Oct 29, 12:59 PM MDT | Blizzard Warning | BOU | 16 hr |
| Oct 29, 5:57 PM MDT | Mesoscale Discussion | SPC | 4 hr |
| Dec 7, 5:21 AM MST | Winter Weather Advisory | BOU | 47 hr |
| Dec 8, 12:53 PM MST | Wind Chill Advisory | BOU | 9 hr |
| Dec 21, 3:56 AM MST | Winter Storm Watch | BOU | 16 hr |
| Dec 21, 7:53 PM MST | Winter Storm Warning | BOU | 43 hr |
| Dec 21, 7:53 PM MST | Winter Weather Advisory | BOU | 61 hr |
| Dec 24, 3:52 PM MST | Winter Weather Advisory | BOU | 49 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 | 20 |
| Tornado Warning | 6 |
| Severe Thunderstorm Watch | 13 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 54 |
| Special Weather Statement | 6 |
| Flooding | |
| Flash Flood Warning | 2 |
| Areal Flood Advisory | 1 |
| Winter | |
| Blizzard Warning | 3 |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 6 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 4 |
| Fire | |
| Red Flag Warning | 4 |
| 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 archive20082010
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.