Alert archive / Nebraska / Boone County
Weather alerts in Boone County, Nebraska, 2015
109 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Boone County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 109
- Warnings
- 23
- Watches
- 16
- Advisories
- 30
- Busiest month
- August19 alerts
- Busiest day
- July 18, 20157 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Boone County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 3 | 67% | 3 | 100% | 27 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 Omaha, NE: tornado warnings | 22 | 7 | 68% | 10 | 80% | 11 min |
| NWS Omaha, NE: severe thunderstorm warnings | 262 | 116 | 56% | 220 | 82% | 18 min |
| NWS Omaha, NE: flash flood warnings | 26 | 11 | 58% | 30 | 97% | 88 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 3, 3:53 AM CST | Winter Weather Advisory | OAX | 25 hr |
| Jan 3, 11:51 AM CST | Wind Chill Advisory | OAX | 23 hr |
| Jan 5, 8:55 PM CST | Winter Weather Advisory | OAX | 6 hr |
| Jan 6, 2:37 PM CST | Wind Chill Advisory | OAX | 21 hr |
| Jan 8, 3:34 AM CST | Winter Weather Advisory | OAX | 16 hr |
| Jan 8, 3:57 PM CST | Wind Chill Advisory | OAX | 17 hr |
| Jan 17, 4:32 AM CST | Wind Advisory | OAX | 12 hr |
| Jan 24, 4:08 PM CST | Wind Advisory | OAX | 17 hr |
| Jan 28, 3:15 PM CST | Wind Advisory | OAX | 16 hr |
| Jan 31, 5:11 AM CST | Winter Weather Advisory | OAX | 38 hr |
| Feb 1, 7:34 PM CST | Wind Chill Advisory | OAX | 13 hr |
| Feb 3, 4:16 PM CST | Winter Weather Advisory | OAX | 21 hr |
| Feb 6, 10:22 PM CST | Special Weather Statement | OAX | 3 hr |
| Feb 9, 3:29 AM CST | Dense Fog Advisory | OAX | 10 hr |
| Mar 3, 10:21 AM CST | Wind Advisory | OAX | 5 hr |
| Mar 11, 3:54 PM CDT | Red Flag Warning | OAX | 27 hr |
| Mar 14, 3:42 AM CDT | Fire Weather Watch | OAX | 24 hr |
| Mar 14, 3:08 PM CDT | Red Flag Warning | OAX | 29 hr |
| Mar 19, 3:42 PM CDT | Fire Weather Watch | OAX | 12 hr |
| Mar 20, 3:30 AM CDT | Red Flag Warning | OAX | 17 hr |
| Mar 28, 3:39 PM CDT | Wind Advisory | OAX | 23 hr |
| Mar 29, 3:56 AM CDT | Red Flag Warning | OAX | 12 hr |
| Mar 30, 3:54 AM CDT | Red Flag Warning | OAX | 15 hr |
| Apr 1, 12:35 PM CDT | Wind Advisory | OAX | 5 hr |
| Apr 1, 3:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 1, 5:52 PM CDT | Severe Thunderstorm Warning | OAX | 38 min |
| Apr 1, 5:57 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 3, 3:38 AM CDT | Fire Weather Watch | OAX | 12 hr |
| Apr 3, 3:26 PM CDT | Red Flag Warning | OAX | 29 hr |
| Apr 12, 5:42 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Apr 14, 3:25 AM CDT | Red Flag Warning | OAX | 16 hr |
| Apr 20, 3:47 AM CDT | Wind Advisory | OAX | 14 hr |
| May 2, 7:49 PM CDT | Special Weather Statement | OAX | 41 min |
| May 2, 8:01 PM CDT | Mesoscale Discussion | SPC | 89 min |
| May 2, 8:55 PM CDT | Severe Thunderstorm Warning | OAX | 21 min |
| May 3, 3:57 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 18, 3:12 PM CDT | Frost Advisory | OAX | 17 hr |
| Jun 3, 3:01 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Jun 6, 2:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 6, 3:40 PM CDT | Tornado Watch | SPC | 5 hr |
| Jun 6, 6:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 6, 8:11 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Jun 6, 8:45 PM CDT | Tornado Watch | SPC | 4 hr |
| Jun 10, 6:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 10, 6:52 PM CDT | Special Weather Statement | OAX | 23 min |
| Jun 10, 7:02 PM CDT | Severe Thunderstorm Warning | OAX | 43 min |
| Jun 10, 8:26 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Jun 14, 12:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 18, 6:27 AM CDT | Special Weather Statement | OAX | 48 min |
| Jun 24, 12:39 AM CDT | Mesoscale Discussion | SPC | 66 min |
| Jul 11, 1:30 AM CDT | Special Weather Statement | OAX | 45 min |
| Jul 11, 2:14 AM CDT | Severe Thunderstorm Warning | OAX | 46 min |
| Jul 11, 11:59 AM CDT | Heat Advisory | OAX | 32 hr |
| Jul 12, 4:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 17, 5:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 17, 8:55 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 17, 8:57 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 17, 9:27 PM CDT | Severe Thunderstorm Warning | OAX | 33 min |
| Jul 17, 10:20 PM CDT | Special Weather Statement | OAX | 40 min |
| Jul 17, 10:39 PM CDT | Areal Flood Advisory | OAX | 3 hr |
| Jul 17, 11:26 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 2:01 AM CDT | Areal Flood Advisory | OAX | 3 hr |
| Jul 19, 10:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jul 31, 2:11 PM CDT | Special Weather Statement | OAX | 49 min |
| Jul 31, 2:13 PM CDT | Severe Thunderstorm Warning | OAX | 32 min |
| Jul 31, 2:41 PM CDT | Severe Thunderstorm Warning | OAX | 49 min |
| Jul 31, 2:45 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 31, 4:23 PM CDT | Special Weather Statement | OAX | 37 min |
| Aug 2, 2:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 2, 7:54 PM CDT | Special Weather Statement | OAX | 51 min |
| Aug 2, 7:58 PM CDT | Severe Thunderstorm Warning | OAX | 21 min |
| Aug 9, 1:05 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Aug 9, 1:42 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 9, 5:59 PM CDT | Special Weather Statement | OAX | 46 min |
| Aug 9, 6:41 PM CDT | Special Weather Statement | OAX | 49 min |
| Aug 9, 7:05 PM CDT | Severe Thunderstorm Warning | OAX | 40 min |
| Aug 9, 7:15 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 9, 7:28 PM CDT | Special Weather Statement | OAX | 47 min |
| Aug 9, 7:46 PM CDT | Special Weather Statement | OAX | 44 min |
| Aug 9, 9:33 PM CDT | Mesoscale Discussion | SPC | 27 min |
| Aug 16, 4:08 AM CDT | Flash Flood Watch | OAX | 6 hr |
| Aug 16, 10:29 AM CDT | Flash Flood Watch | OAX | 7 hr |
| Aug 16, 2:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 27, 5:41 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 27, 7:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Aug 27, 9:32 PM CDT | Areal Flood Warning | OAX | 3 hr |
| Aug 28, 4:24 AM CDT | Areal Flood Advisory | OAX | 6 hr |
| Sep 9, 5:22 PM CDT | Special Weather Statement | OAX | 53 min |
| Sep 9, 6:01 PM CDT | Special Weather Statement | OAX | 29 min |
| Sep 9, 6:54 PM CDT | Special Weather Statement | OAX | 36 min |
| Oct 10, 3:59 AM CDT | Fire Weather Watch | OAX | 24 hr |
| Oct 11, 3:54 AM CDT | Red Flag Warning | OAX | 14 hr |
| Oct 12, 4:05 AM CDT | Wind Advisory | OAX | 13 hr |
| Oct 12, 4:11 AM CDT | Red Flag Warning | OAX | 14 hr |
| Oct 13, 3:59 AM CDT | Red Flag Warning | OAX | 11 hr |
| Oct 14, 3:25 PM CDT | Freeze Watch | OAX | 13 hr |
| Oct 15, 4:15 AM CDT | Freeze Warning | OAX | 29 hr |
| Nov 10, 3:28 AM CST | High Wind Watch | OAX | 24 hr |
| Nov 10, 3:25 PM CST | High Wind Warning | OAX | 32 hr |
| Nov 10, 3:25 PM CST | Wind Advisory | OAX | 36 hr |
| Nov 12, 2:55 AM CST | Wind Advisory | OAX | 13 hr |
| Nov 20, 4:14 AM CST | Winter Weather Advisory | OAX | 16 hr |
| Nov 25, 3:33 PM CST | Winter Weather Advisory | OAX | 35 hr |
| Nov 28, 2:59 PM CST | Winter Storm Watch | OAX | 25 hr |
| Nov 29, 3:34 PM CST | Winter Storm Warning | OAX | 29 hr |
| Nov 29, 3:34 PM CST | Winter Weather Advisory | OAX | 26 hr |
| Dec 25, 3:40 AM CST | Winter Weather Advisory | OAX | 36 hr |
| Dec 26, 3:20 PM CST | Winter Storm Watch | OAX | 24 hr |
| Dec 27, 3:33 PM CST | Winter Weather Advisory | OAX | 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 | 9 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 24 |
| Special Weather Statement | 16 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 10 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 10 |
| Fire | |
| Red Flag Warning | 10 |
| Fire Weather Watch | 4 |
| 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 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.