Alert archive / Nebraska / Boone County
Weather alerts in Boone County, Nebraska, 2019
123 weather alerts in 2019, 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 2019. Tap one for its archive.
- Alerts
- 123
- Warnings
- 28
- Watches
- 19
- Advisories
- 39
- Busiest month
- March22 alerts
- Busiest day
- March 13, 20199 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, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 10 | 1 | 90% | 1 | 100% | 25 min |
| Flash flood warnings | 4 | 2 | 50% | 1 | 100% | 138 min |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Omaha, NE: tornado warnings | 23 | 7 | 70% | 9 | 78% | 18 min |
| NWS Omaha, NE: severe thunderstorm warnings | 191 | 82 | 57% | 179 | 74% | 17 min |
| NWS Omaha, NE: flash flood warnings | 47 | 10 | 79% | 27 | 81% | 284 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 7, 2:53 PM CST | Wind Advisory | OAX | 25 hr |
| Jan 14, 9:13 PM CST | Dense Fog Advisory | OAX | 12 hr |
| Jan 17, 3:38 AM CST | Winter Weather Advisory | OAX | 48 hr |
| Jan 21, 3:47 AM CST | Winter Weather Advisory | OAX | 50 hr |
| Jan 26, 3:02 PM CST | High Wind Watch | OAX | 12 hr |
| Jan 27, 3:04 AM CST | High Wind Warning | OAX | 31 hr |
| Jan 27, 3:55 AM CST | Wind Advisory | OAX | 38 hr |
| Jan 27, 3:18 PM CST | Wind Chill Watch | OAX | 36 hr |
| Jan 28, 2:38 AM CST | Wind Chill Warning | OAX | 57 hr |
| Feb 2, 12:14 PM CST | Dense Fog Advisory | OAX | 25 hr |
| Feb 5, 3:31 PM CST | Winter Weather Advisory | OAX | 50 hr |
| Feb 7, 3:29 AM CST | Wind Chill Advisory | OAX | 33 hr |
| Feb 10, 3:56 AM CST | Winter Weather Advisory | OAX | 44 hr |
| Feb 14, 2:47 AM CST | Winter Weather Advisory | OAX | 25 hr |
| Feb 15, 4:09 AM CST | Winter Weather Advisory | OAX | 14 hr |
| Feb 15, 3:35 PM CST | Winter Weather Advisory | OAX | 50 hr |
| Feb 18, 3:50 AM CST | Winter Storm Watch | OAX | 24 hr |
| Feb 19, 3:40 AM CST | Winter Storm Warning | OAX | 32 hr |
| Feb 21, 4:18 AM CST | Winter Weather Advisory | OAX | 71 hr |
| Mar 2, 3:22 AM CST | Wind Chill Advisory | OAX | 57 hr |
| Mar 6, 3:21 AM CST | Winter Weather Advisory | OAX | 36 hr |
| Mar 7, 12:09 AM CST | Mesoscale Discussion | SPC | 3 hr |
| Mar 8, 4:26 AM CST | Winter Weather Advisory | OAX | 35 hr |
| Mar 9, 3:27 AM CST | Wind Advisory | OAX | 21 hr |
| Mar 11, 3:31 AM CDT | Flood Watch | OAX | 3 days |
| Mar 12, 3:42 AM CDT | High Wind Watch | OAX | 36 hr |
| Mar 12, 1:48 PM CDT | Areal Flood Advisory | OAX | 6 hr |
| Mar 12, 3:13 PM CDT | Dense Fog Advisory | OAX | 25 hr |
| Mar 13, 4:00 AM CDT | Winter Storm Watch | OAX | 12 hr |
| Mar 13, 7:44 AM CDT | Areal Flood Warning | OAX | 6 hr |
| Mar 13, 11:01 AM CDT | Flash Flood Warning | OAX | 8 hr |
| Mar 13, 1:26 PM CDT | Areal Flood Warning | OAX | 6 hr |
| Mar 13, 3:35 PM CDT | Winter Storm Warning | OAX | 23 hr |
| Mar 13, 4:02 PM CDT | High Wind Warning | OAX | 28 hr |
| Mar 13, 4:02 PM CDT | Wind Advisory | OAX | 33 hr |
| Mar 13, 6:19 PM CDT | Flash Flood Warning | OAX | 6 hr |
| Mar 13, 6:29 PM CDT | Areal Flood Warning | OAX | 39 hr |
| Mar 13, 9:24 PM CDT | Flash Flood Warning | OAX | 12 hr |
| Mar 14, 3:40 AM CDT | Winter Weather Advisory | OAX | 14 hr |
| Mar 14, 6:24 PM CDT | Flash Flood Warning | OAX | 12 hr |
| Mar 15, 9:45 AM CDT | Areal Flood Warning | OAX | 24 hr |
| Apr 5, 1:05 AM CDT | Dense Fog Advisory | OAX | 9 hr |
| Apr 8, 4:25 PM CDT | Winter Storm Watch | OAX | 35 hr |
| Apr 10, 3:32 AM CDT | Winter Weather Advisory | OAX | 48 hr |
| Apr 21, 9:33 PM CDT | Severe Thunderstorm Warning | OAX | 42 min |
| Apr 26, 4:28 PM CDT | Wind Advisory | OAX | 24 hr |
| Apr 27, 3:24 AM CDT | Frost Advisory | OAX | 24 hr |
| May 1, 4:12 PM CDT | Frost Advisory | OAX | 17 hr |
| May 4, 1:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 9, 3:33 AM CDT | Frost Advisory | OAX | 29 hr |
| May 16, 8:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| May 17, 8:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 11:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 10:55 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 27, 11:42 PM CDT | Mesoscale Discussion | SPC | 63 min |
| May 28, 1:16 AM CDT | Severe Thunderstorm Warning | OAX | 44 min |
| May 28, 1:56 AM CDT | Severe Thunderstorm Warning | OAX | 34 min |
| May 31, 3:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 8, 2:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 20, 9:53 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 20, 9:44 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 21, 4:34 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 21, 8:09 PM CDT | Severe Thunderstorm Warning | OAX | 36 min |
| Jun 21, 8:40 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 21, 8:41 PM CDT | Severe Thunderstorm Warning | OAX | 22 min |
| Jun 25, 1:56 AM CDT | Special Weather Statement | OAX | 34 min |
| Jun 25, 2:19 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 2:27 AM CDT | Special Weather Statement | OAX | 33 min |
| Jun 26, 1:55 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 2:26 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 26, 3:11 AM CDT | Special Weather Statement | OAX | 19 min |
| Jun 26, 3:23 AM CDT | Special Weather Statement | OAX | 37 min |
| Jun 26, 3:30 AM CDT | Severe Thunderstorm Warning | OAX | 45 min |
| Jun 26, 3:56 AM CDT | Special Weather Statement | OAX | 34 min |
| Jun 26, 5:58 AM CDT | Severe Thunderstorm Warning | OAX | 47 min |
| Jun 26, 6:34 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 28, 3:01 PM CDT | Heat Advisory | OAX | 30 hr |
| Jun 29, 2:55 AM CDT | Heat Advisory | OAX | 41 hr |
| Jul 1, 6:42 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 2, 3:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 5, 4:03 AM CDT | Severe Thunderstorm Warning | OAX | 57 min |
| Jul 5, 4:54 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 2:26 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 13, 1:41 AM CDT | Special Weather Statement | OAX | 64 min |
| Jul 13, 2:22 AM CDT | Special Weather Statement | OAX | 68 min |
| Jul 15, 3:48 PM CDT | Excessive Heat Watch | OAX | 5 hr |
| Jul 15, 3:48 PM CDT | Excessive Heat Watch | OAX | 5 hr |
| Jul 15, 3:48 PM CDT | Excessive Heat Watch | OAX | 36 hr |
| Jul 15, 7:25 PM CDT | Special Weather Statement | OAX | 35 min |
| Jul 15, 10:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 16, 3:08 AM CDT | Special Weather Statement | OAX | 37 min |
| Jul 16, 3:56 PM CDT | Excessive Heat Warning | OAX | 4 days |
| Aug 6, 6:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 6, 8:19 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 7, 1:27 AM CDT | Special Weather Statement | OAX | 33 min |
| Aug 25, 9:49 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 30, 9:07 PM CDT | Special Weather Statement | OAX | 38 min |
| Sep 2, 6:27 AM CDT | Severe Thunderstorm Warning | OAX | 33 min |
| Sep 8, 7:06 AM CDT | Dense Fog Advisory | OAX | 114 min |
| Sep 11, 8:03 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 30, 3:58 AM CDT | Flash Flood Watch | OAX | 41 hr |
| Sep 30, 4:59 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 30, 11:24 PM CDT | Special Weather Statement | OAX | 36 min |
| Sep 30, 11:29 PM CDT | Severe Thunderstorm Warning | OAX | 31 min |
| Oct 9, 3:11 AM CDT | Freeze Watch | OAX | 12 hr |
| Oct 9, 3:33 PM CDT | Freeze Warning | OAX | 42 hr |
| Oct 11, 4:12 AM CDT | Freeze Warning | OAX | 30 hr |
| Oct 20, 5:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Oct 21, 3:42 AM CDT | Wind Advisory | OAX | 30 hr |
| Nov 10, 2:34 PM CST | Winter Weather Advisory | OAX | 18 hr |
| Nov 24, 1:51 PM CST | Winter Storm Watch | OAX | 26 hr |
| Nov 25, 3:52 AM CST | Winter Storm Warning | OAX | 53 hr |
| Nov 26, 10:58 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Nov 26, 5:23 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Nov 27, 4:07 PM CST | Winter Weather Advisory | OAX | 47 hr |
| Nov 30, 3:20 AM CST | Wind Advisory | OAX | 33 hr |
| Nov 30, 3:20 AM CST | Winter Weather Advisory | OAX | 33 hr |
| Nov 30, 2:58 PM CST | High Wind Warning | OAX | 13 hr |
| Dec 9, 1:30 AM CST | Wind Advisory | OAX | 9 hr |
| Dec 24, 9:10 PM CST | Dense Fog Advisory | OAX | 12 hr |
| Dec 26, 4:06 PM CST | Winter Storm Watch | OAX | 23 hr |
| Dec 27, 3:22 AM CST | Winter Weather Advisory | OAX | 24 hr |
| Dec 27, 3:29 PM CST | Winter Weather Advisory | OAX | 3 days |
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 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.