Alert archive / Kansas / Ottawa County
Weather alerts in Ottawa County, Kansas, 2020
142 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Ottawa County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 142
- Warnings
- 40
- Watches
- 19
- Advisories
- 31
- Busiest month
- July33 alerts
- Busiest day
- May 25, 202011 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Ottawa County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 18 | 9 | 50% | 8 | 100% | 26 min |
| Flash flood warnings | 3 | 3 | 0% | 4 | 100% | 111 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Topeka, KS: tornado warnings | 9 | 1 | 89% | 2 | 50% | 0 min |
| NWS Topeka, KS: severe thunderstorm warnings | 167 | 88 | 47% | 220 | 88% | 24 min |
| NWS Topeka, KS: flash flood warnings | 39 | 20 | 49% | 50 | 94% | 78 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 9, 3:15 PM CST | Winter Storm Watch | TOP | 13 hr |
| Jan 10, 4:15 AM CST | Winter Weather Advisory | TOP | 34 hr |
| Jan 12, 12:47 PM CST | Winter Weather Advisory | TOP | 7 hr |
| Jan 13, 5:55 PM CST | Dense Fog Advisory | TOP | 18 hr |
| Jan 15, 3:14 PM CST | Winter Weather Advisory | TOP | 47 hr |
| Jan 17, 3:20 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 21, 3:27 PM CST | Winter Weather Advisory | TOP | 21 hr |
| Jan 22, 9:27 PM CST | Dense Fog Advisory | TOP | 6 hr |
| Jan 23, 3:27 AM CST | Winter Weather Advisory | TOP | 27 hr |
| Mar 4, 2:21 PM CST | Fire Weather Watch | TOP | 5 hr |
| Mar 4, 7:24 PM CST | Red Flag Warning | TOP | 23 hr |
| Mar 6, 2:44 PM CST | Fire Weather Watch | TOP | 12 hr |
| Mar 7, 3:06 AM CST | Red Flag Warning | TOP | 16 hr |
| Mar 7, 9:44 PM CST | Fire Weather Watch | TOP | 9 min |
| Mar 8, 3:37 AM CDT | Wind Advisory | TOP | 15 hr |
| Mar 8, 3:41 AM CDT | Fire Weather Watch | TOP | 7 hr |
| Mar 18, 3:39 PM CDT | Wind Advisory | TOP | 27 hr |
| Mar 19, 9:20 AM CDT | Wind Advisory | TOP | 20 hr |
| Mar 22, 11:27 PM CDT | Dense Fog Advisory | TOP | 12 hr |
| Mar 27, 3:40 PM CDT | Wind Advisory | TOP | 28 hr |
| Apr 2, 3:47 AM CDT | Winter Weather Advisory | TOP | 34 hr |
| Apr 9, 2:27 AM CDT | Freeze Warning | TOP | 31 hr |
| Apr 10, 3:32 PM CDT | High Wind Watch | TOP | 25 hr |
| Apr 11, 4:04 PM CDT | High Wind Warning | TOP | 29 hr |
| Apr 11, 4:04 PM CDT | Wind Advisory | TOP | 33 hr |
| Apr 12, 4:19 AM CDT | Freeze Warning | TOP | 30 hr |
| Apr 13, 3:37 AM CDT | Freeze Warning | TOP | 30 hr |
| Apr 14, 3:46 PM CDT | Freeze Warning | TOP | 17 hr |
| Apr 16, 3:50 AM CDT | Freeze Warning | TOP | 29 hr |
| Apr 20, 1:51 AM CDT | Special Weather Statement | TOP | 39 min |
| Apr 20, 2:15 AM CDT | Special Weather Statement | TOP | 30 min |
| Apr 28, 6:39 PM CDT | Special Weather Statement | TOP | 66 min |
| Apr 29, 3:44 AM CDT | Wind Advisory | TOP | 15 hr |
| May 4, 5:50 AM CDT | Mesoscale Discussion | SPC | 55 min |
| May 4, 6:33 AM CDT | Severe Thunderstorm Watch | SPC | 12 hr |
| May 4, 7:33 AM CDT | Severe Thunderstorm Warning | TOP | 42 min |
| May 4, 7:35 AM CDT | Severe Thunderstorm Warning | TOP | 40 min |
| May 4, 8:16 AM CDT | Severe Thunderstorm Warning | TOP | 44 min |
| May 4, 9:00 AM CDT | Mesoscale Discussion | SPC | 90 min |
| May 24, 3:42 AM CDT | Flash Flood Watch | TOP | 56 hr |
| May 24, 5:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| May 24, 7:37 PM CDT | Special Weather Statement | TOP | 38 min |
| May 24, 7:41 PM CDT | Special Weather Statement | ICT | 34 min |
| May 24, 8:05 PM CDT | Severe Thunderstorm Warning | TOP | 40 min |
| May 24, 9:06 PM CDT | Severe Thunderstorm Warning | TOP | 39 min |
| May 24, 9:24 PM CDT | Flash Flood Warning | TOP | 4 hr |
| May 24, 9:48 PM CDT | Special Weather Statement | TOP | 57 min |
| May 24, 10:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| May 24, 10:49 PM CDT | Special Weather Statement | TOP | 56 min |
| May 25, 1:31 AM CDT | River Flood Warning | TOP | 9 hr |
| May 25, 1:33 AM CDT | Areal Flood Warning | TOP | 5 hr |
| May 25, 8:48 AM CDT | Areal Flood Warning | TOP | 8 hr |
| Jun 3, 9:38 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 3, 10:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 4, 12:10 AM CDT | Special Weather Statement | TOP | 35 min |
| Jun 4, 12:15 AM CDT | Severe Thunderstorm Warning | TOP | 45 min |
| Jun 4, 11:59 PM CDT | Severe Thunderstorm Warning | TOP | 46 min |
| Jun 8, 3:40 PM CDT | High Wind Watch | TOP | 12 hr |
| Jun 9, 3:31 AM CDT | High Wind Warning | TOP | 24 hr |
| Jun 9, 3:31 AM CDT | Wind Advisory | TOP | 32 hr |
| Jun 9, 2:03 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 18, 3:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jun 18, 6:30 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 18, 6:38 PM CDT | Severe Thunderstorm Warning | TOP | 37 min |
| Jun 18, 7:24 PM CDT | Special Weather Statement | TOP | 51 min |
| Jun 18, 8:14 PM CDT | Special Weather Statement | TOP | 61 min |
| Jun 26, 6:30 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 26, 7:50 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 26, 10:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 11:03 PM CDT | Severe Thunderstorm Warning | TOP | 42 min |
| Jun 26, 11:38 PM CDT | Severe Thunderstorm Warning | TOP | 37 min |
| Jun 27, 12:09 AM CDT | Severe Thunderstorm Warning | TOP | 51 min |
| Jun 27, 12:55 AM CDT | Special Weather Statement | TOP | 65 min |
| Jun 27, 1:28 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 27, 1:56 AM CDT | Flash Flood Warning | TOP | 7 hr |
| Jun 27, 3:22 AM CDT | Mesoscale Discussion | SPC | 53 min |
| Jun 27, 9:15 AM CDT | River Flood Warning | TOP | 44 hr |
| Jun 27, 9:15 AM CDT | River Flood Warning | TOP | 4 days |
| Jun 28, 12:52 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 28, 2:14 AM CDT | Mesoscale Discussion | SPC | 61 min |
| Jun 28, 2:32 AM CDT | Special Weather Statement | TOP | 28 min |
| Jun 29, 2:57 PM CDT | Heat Advisory | TOP | 29 hr |
| Jul 2, 4:31 AM CDT | Special Weather Statement | TOP | 44 min |
| Jul 2, 9:15 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Jul 2, 9:19 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 2, 10:42 PM CDT | Severe Thunderstorm Warning | TOP | 48 min |
| Jul 2, 11:21 PM CDT | Severe Thunderstorm Warning | TOP | 39 min |
| Jul 8, 8:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 8, 9:41 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 8, 11:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jul 9, 12:45 AM CDT | Severe Thunderstorm Warning | TOP | 60 min |
| Jul 9, 1:07 AM CDT | Severe Thunderstorm Warning | TOP | 53 min |
| Jul 9, 1:35 AM CDT | Severe Thunderstorm Warning | TOP | 55 min |
| Jul 9, 2:25 AM CDT | Areal Flood Advisory | TOP | 3 hr |
| Jul 9, 2:47 AM CDT | Flash Flood Warning | TOP | 4 hr |
| Jul 9, 3:10 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 2:59 AM CDT | Special Weather Statement | TOP | 61 min |
| Jul 15, 3:28 AM CDT | Special Weather Statement | TOP | 47 min |
| Jul 16, 3:05 PM CDT | Heat Advisory | TOP | 53 hr |
| Jul 18, 9:49 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jul 18, 10:51 PM CDT | Special Weather Statement | TOP | 54 min |
| Jul 20, 12:43 AM CDT | Special Weather Statement | TOP | 32 min |
| Jul 20, 12:50 AM CDT | Special Weather Statement | TOP | 25 min |
| Jul 20, 1:15 AM CDT | Special Weather Statement | TOP | 30 min |
| Jul 20, 1:22 AM CDT | Severe Thunderstorm Warning | TOP | 25 min |
| Jul 20, 2:14 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 9:10 PM CDT | Severe Thunderstorm Warning | TOP | 37 min |
| Jul 25, 3:11 PM CDT | Flash Flood Watch | TOP | 37 hr |
| Jul 26, 3:45 AM CDT | Heat Advisory | TOP | 15 hr |
| Jul 26, 2:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 26, 8:16 PM CDT | Areal Flood Advisory | TOP | 3 hr |
| Jul 28, 8:05 AM CDT | River Flood Warning | TOP | 5 days |
| Jul 29, 10:04 AM CDT | Flash Flood Watch | TOP | 41 hr |
| Jul 30, 2:22 AM CDT | Special Weather Statement | TOP | 38 min |
| Jul 30, 2:40 AM CDT | Special Weather Statement | TOP | 50 min |
| Jul 31, 9:35 PM CDT | River Flood Warning | TOP | 16 hr |
| Aug 1, 6:56 PM CDT | Special Weather Statement | TOP | 34 min |
| Aug 7, 3:26 PM CDT | Heat Advisory | TOP | 29 hr |
| Aug 9, 3:18 AM CDT | Heat Advisory | TOP | 17 hr |
| Aug 9, 3:46 AM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 14, 5:05 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 14, 9:01 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Aug 14, 9:08 PM CDT | Special Weather Statement | TOP | 37 min |
| Aug 16, 11:24 AM CDT | Special Weather Statement | TOP | 36 min |
| Aug 16, 7:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Aug 16, 8:09 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Aug 16, 9:31 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Aug 30, 11:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 11, 3:35 AM CDT | Wind Advisory | TOP | 25 hr |
| Oct 11, 8:25 PM CDT | High Wind Warning | TOP | 4 hr |
| Oct 15, 2:49 PM CDT | Frost Advisory | TOP | 18 hr |
| Oct 21, 2:46 PM CDT | Dense Fog Advisory | TOP | 19 hr |
| Oct 22, 3:38 AM CDT | Freeze Watch | TOP | 23 hr |
| Oct 23, 2:50 AM CDT | Freeze Warning | TOP | 31 hr |
| Oct 25, 3:19 AM CDT | Winter Weather Advisory | TOP | 60 hr |
| Nov 7, 2:46 PM CST | Wind Advisory | TOP | 27 hr |
| Nov 14, 3:33 AM CST | Wind Advisory | TOP | 22 hr |
| Nov 17, 2:32 PM CST | Fire Weather Watch | TOP | 12 hr |
| Nov 18, 2:07 AM CST | Red Flag Warning | TOP | 22 hr |
| Dec 22, 2:33 PM CST | Wind Advisory | TOP | 27 hr |
| Dec 28, 3:19 AM CST | Winter Weather Advisory | TOP | 39 hr |
| Dec 29, 4:00 AM CST | Mesoscale Discussion | SPC | 6 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 | 18 |
| Severe Thunderstorm Watch | 7 |
| Mesoscale Discussion | 28 |
| Special Weather Statement | 24 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 3 |
| River Flood Warning | 5 |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 8 |
| Heat | |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 6 |
| Freeze Watch | 1 |
| Frost Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 2 |
| Wind Advisory | 11 |
| Fire | |
| Red Flag Warning | 3 |
| Fire Weather Watch | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.