Alert archive / Nebraska / Perkins County
Weather alerts in Perkins County, Nebraska, 2020
146 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Perkins County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 146
- Warnings
- 50
- Watches
- 33
- Advisories
- 21
- Busiest month
- July42 alerts
- Busiest day
- July 20, 20206 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
2 of 2 tornado warnings covering Perkins County in 2020 had a tornado report inside them; 3 of 5 tornado reports fell inside a warning, on average 3 minutes after it went out.
Perkins County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 2 | 0% | 5 | 60% | 3 min |
| Severe thunderstorm warnings | 22 | 13 | 41% | 10 | 90% | 22 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS North Platte, NE: tornado warnings | 17 | 5 | 71% | 22 | 36% | 16 min |
| NWS North Platte, NE: severe thunderstorm warnings | 323 | 183 | 43% | 352 | 82% | 20 min |
| NWS North Platte, NE: flash flood warnings | 9 | 3 | 67% | 22 | 32% | 27 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 31, 1:53 PM MST | Fire Weather Watch | LBF | 13 hr |
| Feb 1, 2:25 AM MST | Red Flag Warning | LBF | 16 hr |
| Feb 3, 2:33 AM MST | Winter Weather Advisory | LBF | 24 hr |
| Feb 18, 2:50 AM MST | Winter Weather Advisory | LBF | 40 hr |
| Feb 22, 12:13 PM MST | Red Flag Warning | LBF | 5 hr |
| Feb 24, 2:32 AM MST | Winter Weather Advisory | LBF | 38 hr |
| Mar 3, 2:06 AM MST | Fire Weather Watch | LBF | 11 hr |
| Mar 3, 1:32 PM MST | Red Flag Warning | LBF | 4 days |
| Mar 11, 2:06 PM MDT | Winter Storm Watch | LBF | 22 hr |
| Mar 12, 12:29 PM MDT | Winter Storm Warning | LBF | 38 hr |
| Mar 12, 12:29 PM MDT | Winter Weather Advisory | LBF | 50 hr |
| Mar 17, 2:35 PM MDT | Winter Storm Warning | LBF | 56 hr |
| Mar 17, 2:35 PM MDT | Winter Weather Advisory | LBF | 52 hr |
| Mar 18, 9:35 PM MDT | Dense Fog Advisory | LBF | 8 hr |
| Mar 19, 8:31 PM MDT | Winter Weather Advisory | LBF | 6 hr |
| Mar 23, 3:24 AM MDT | Dense Fog Advisory | LBF | 6 hr |
| Mar 25, 2:32 AM MDT | Red Flag Warning | LBF | 15 hr |
| Mar 27, 12:17 PM MDT | Winter Weather Advisory | LBF | 23 hr |
| Mar 31, 2:02 AM MDT | Dense Fog Advisory | LBF | 7 hr |
| Apr 1, 2:51 AM MDT | Winter Weather Advisory | LBF | 47 hr |
| Apr 6, 2:05 AM MDT | Fire Weather Watch | LBF | 11 hr |
| Apr 6, 2:05 AM MDT | Red Flag Warning | LBF | 40 hr |
| Apr 6, 3:59 AM MDT | Dense Fog Advisory | LBF | 4 hr |
| Apr 10, 2:23 PM MDT | Winter Weather Advisory | LBF | 48 hr |
| Apr 14, 2:00 PM MDT | Winter Storm Watch | LBF | 24 hr |
| Apr 15, 2:18 PM MDT | Winter Weather Advisory | LBF | 31 hr |
| Apr 27, 2:19 PM MDT | Red Flag Warning | LBF | 29 hr |
| Apr 28, 2:05 PM MDT | Fire Weather Watch | LBF | 12 hr |
| Apr 29, 1:53 AM MDT | Red Flag Warning | LBF | 41 hr |
| Apr 29, 1:51 PM MDT | Fire Weather Watch | LBF | 4 hr |
| May 3, 2:44 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 3, 3:16 PM MDT | Severe Thunderstorm Warning | LBF | 44 min |
| May 3, 3:57 PM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| May 3, 4:14 PM MDT | Special Weather Statement | LBF | 46 min |
| May 3, 4:42 PM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| May 7, 1:59 PM MDT | Frost Advisory | LBF | 18 hr |
| May 9, 1:26 PM MDT | Frost Advisory | LBF | 19 hr |
| May 15, 2:15 PM MDT | Mesoscale Discussion | SPC | 90 min |
| May 23, 1:15 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 23, 2:57 PM MDT | Mesoscale Discussion | SPC | 93 min |
| May 23, 5:27 PM MDT | Mesoscale Discussion | SPC | 93 min |
| May 23, 7:29 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 23, 7:57 PM MDT | Severe Thunderstorm Warning | LBF | 63 min |
| May 23, 9:32 PM MDT | Special Weather Statement | LBF | 28 min |
| May 23, 9:44 PM MDT | Severe Thunderstorm Warning | LBF | 46 min |
| Jun 2, 3:58 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jun 3, 1:05 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jun 3, 5:18 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 4, 3:57 PM MDT | Special Weather Statement | LBF | 48 min |
| Jun 6, 4:49 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 6, 5:57 PM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| Jun 6, 7:04 PM MDT | Special Weather Statement | LBF | 41 min |
| Jun 6, 7:44 PM MDT | Special Weather Statement | LBF | 46 min |
| Jun 7, 2:52 PM MDT | High Wind Warning | LBF | 8 hr |
| Jun 8, 1:33 PM MDT | High Wind Warning | LBF | 30 hr |
| Jun 8, 4:56 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 8, 8:01 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jun 8, 11:46 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Jun 14, 2:36 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 20, 2:17 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jun 20, 2:53 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 25, 2:30 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 25, 4:52 PM MDT | Severe Thunderstorm Warning | LBF | 39 min |
| Jun 26, 6:50 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 26, 7:13 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 2, 1:44 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jul 2, 1:58 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 2, 4:18 PM MDT | Severe Thunderstorm Warning | LBF | 57 min |
| Jul 2, 4:53 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 8:51 PM MDT | Special Weather Statement | LBF | 39 min |
| Jul 8, 2:39 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 8, 4:10 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 8, 5:51 PM MDT | Tornado Warning | LBF | 39 min |
| Jul 8, 6:00 PM MDT | Tornado Warning | LBF | 45 min |
| Jul 8, 6:32 PM MDT | Mesoscale Discussion | SPC | 58 min |
| Jul 8, 6:33 PM MDT | Severe Thunderstorm Warning | LBF | 42 min |
| Jul 10, 2:14 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 2:08 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 2:36 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 13, 5:41 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 5:57 PM MDT | Severe Thunderstorm Warning | LBF | 63 min |
| Jul 13, 6:13 PM MDT | Severe Thunderstorm Warning | LBF | 47 min |
| Jul 13, 6:58 PM MDT | Severe Thunderstorm Warning | LBF | 47 min |
| Jul 16, 6:59 PM MDT | Severe Thunderstorm Warning | LBF | 46 min |
| Jul 16, 7:44 PM MDT | Severe Thunderstorm Warning | LBF | 12 min |
| Jul 17, 2:20 PM MDT | Heat Advisory | LBF | 20 hr |
| Jul 19, 2:50 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Jul 19, 4:06 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 19, 6:47 PM MDT | Severe Thunderstorm Warning | LBF | 43 min |
| Jul 19, 6:48 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Jul 19, 9:25 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Jul 20, 2:51 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jul 20, 3:49 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 20, 5:27 PM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| Jul 20, 6:17 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jul 20, 6:29 PM MDT | Severe Thunderstorm Warning | LBF | 46 min |
| Jul 20, 8:18 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jul 23, 5:20 PM MDT | Special Weather Statement | LBF | 40 min |
| Jul 23, 6:21 PM MDT | Special Weather Statement | LBF | 39 min |
| Jul 24, 1:03 AM MDT | Special Weather Statement | LBF | 57 min |
| Jul 24, 2:21 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 24, 8:15 PM MDT | Areal Flood Advisory | LBF | 3 hr |
| Jul 24, 9:19 PM MDT | Severe Thunderstorm Warning | LBF | 41 min |
| Jul 25, 5:19 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jul 25, 7:34 PM MDT | Severe Thunderstorm Warning | LBF | 44 min |
| Jul 25, 7:51 PM MDT | Severe Thunderstorm Warning | LBF | 39 min |
| Jul 29, 2:09 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 5, 9:02 PM MDT | Special Weather Statement | LBF | 43 min |
| Aug 6, 5:13 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 6, 9:24 PM MDT | Special Weather Statement | LBF | 51 min |
| Aug 8, 12:35 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Aug 8, 5:00 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 8, 7:58 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Aug 11, 3:57 PM MDT | Severe Thunderstorm Warning | LBF | 63 min |
| Aug 12, 4:28 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Aug 13, 12:04 AM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| Aug 13, 2:06 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Aug 16, 12:56 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 1:30 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 30, 2:38 AM MDT | Red Flag Warning | LBF | 17 hr |
| Sep 5, 6:55 PM MDT | Red Flag Warning | LBF | 23 hr |
| Sep 25, 3:00 AM MDT | Fire Weather Watch | LBF | 11 hr |
| Sep 25, 1:32 PM MDT | Red Flag Warning | LBF | 29 hr |
| Sep 28, 2:58 AM MDT | Frost Advisory | LBF | 29 hr |
| Sep 29, 2:57 AM MDT | Red Flag Warning | LBF | 15 hr |
| Oct 1, 2:20 AM MDT | Freeze Warning | LBF | 30 hr |
| Oct 4, 2:07 AM MDT | Fire Weather Watch | LBF | 12 hr |
| Oct 4, 1:49 PM MDT | Red Flag Warning | LBF | 29 hr |
| Oct 5, 1:18 PM MDT | Fire Weather Watch | LBF | 12 hr |
| Oct 9, 1:56 PM MDT | Fire Weather Watch | LBF | 24 hr |
| Oct 9, 1:56 PM MDT | Red Flag Warning | LBF | 29 hr |
| Oct 10, 2:14 AM MDT | Red Flag Warning | LBF | 40 hr |
| Oct 11, 2:21 AM MDT | Fire Weather Watch | LBF | 12 hr |
| Oct 11, 1:58 PM MDT | Red Flag Warning | LBF | 29 hr |
| Oct 13, 2:15 PM MDT | Fire Weather Watch | LBF | 12 hr |
| Oct 23, 2:13 AM MDT | Winter Storm Watch | LBF | 24 hr |
| Oct 23, 1:14 PM MDT | Winter Storm Warning | LBF | 65 hr |
| Nov 5, 12:26 PM MST | Red Flag Warning | LBF | 29 hr |
| Nov 7, 1:39 AM MST | High Wind Watch | LBF | 23 hr |
| Nov 8, 1:07 AM MST | High Wind Warning | LBF | 13 hr |
| Nov 9, 1:47 PM MST | Winter Weather Advisory | LBF | 24 hr |
| Nov 13, 3:12 AM MST | Red Flag Warning | LBF | 14 hr |
| Nov 14, 10:00 AM MST | High Wind Warning | LBF | 7 hr |
| Dec 21, 8:13 PM MST | High Wind Watch | LBF | 7 hr |
| Dec 22, 3:20 AM MST | High Wind Warning | LBF | 38 hr |
| Dec 28, 1:59 AM MST | Winter Weather Advisory | LBF | 39 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 | 22 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 17 |
| Mesoscale Discussion | 31 |
| Special Weather Statement | 11 |
| Flooding | |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 12 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 5 |
| High Wind Watch | 2 |
| Fire | |
| Red Flag Warning | 17 |
| Fire Weather Watch | 11 |
| 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.