Alert archive / Nebraska / York County
Weather alerts in York County, Nebraska, 2020
135 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
York County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 135
- Warnings
- 41
- Watches
- 18
- Advisories
- 37
- Busiest month
- June29 alerts
- Busiest day
- July 1, 20207 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 York County in 2020 had a tornado report inside them.
York County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 2 | 0% | 0 | ||
| Severe thunderstorm warnings | 20 | 14 | 30% | 16 | 75% | 26 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 Hastings, NE: tornado warnings | 5 | 2 | 60% | 7 | 29% | 19 min |
| NWS Hastings, NE: severe thunderstorm warnings | 197 | 98 | 50% | 355 | 83% | 25 min |
| NWS Hastings, NE: flash flood warnings | 13 | 4 | 69% | 10 | 80% | 202 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 12, 12:41 PM CST | Winter Weather Advisory | GID | 4 hr |
| Jan 13, 5:59 PM CST | Dense Fog Advisory | GID | 14 hr |
| Jan 14, 4:26 PM CST | Winter Weather Advisory | GID | 9 hr |
| Jan 15, 2:59 PM CST | Winter Weather Advisory | GID | 60 hr |
| Jan 17, 2:30 PM CST | High Wind Warning | GID | 15 hr |
| Jan 21, 3:10 PM CST | Winter Weather Advisory | GID | 21 hr |
| Jan 22, 2:38 PM CST | Winter Weather Advisory | GID | 27 hr |
| Jan 24, 10:43 PM CST | Dense Fog Advisory | GID | 11 hr |
| Jan 25, 8:55 PM CST | Dense Fog Advisory | GID | 7 hr |
| Feb 2, 2:42 PM CST | Winter Weather Advisory | GID | 21 hr |
| Feb 12, 3:27 AM CST | Wind Chill Advisory | GID | 31 hr |
| Mar 4, 2:44 PM CST | Red Flag Warning | GID | 28 hr |
| Mar 10, 12:25 AM CDT | Dense Fog Advisory | GID | 10 hr |
| Mar 10, 9:56 PM CDT | Dense Fog Advisory | GID | 13 hr |
| Mar 11, 11:02 AM CDT | Dense Fog Advisory | GID | 109 min |
| Mar 12, 3:08 PM CDT | Winter Weather Advisory | GID | 43 hr |
| Mar 18, 10:12 PM CDT | Dense Fog Advisory | GID | 10 hr |
| Mar 19, 3:56 PM CDT | Severe Thunderstorm Warning | GID | 34 min |
| Mar 19, 4:24 PM CDT | Severe Thunderstorm Warning | GID | 24 min |
| Mar 19, 4:39 PM CDT | Special Weather Statement | GID | 36 min |
| Mar 23, 1:08 AM CDT | Dense Fog Advisory | GID | 9 hr |
| Mar 24, 5:07 AM CDT | Dense Fog Advisory | GID | 5 hr |
| Apr 2, 3:31 AM CDT | Winter Weather Advisory | GID | 25 hr |
| Apr 3, 4:02 AM CDT | Winter Weather Advisory | GID | 3 hr |
| Apr 7, 3:27 AM CDT | Red Flag Warning | GID | 16 hr |
| Apr 9, 4:21 AM CDT | Red Flag Warning | GID | 16 hr |
| Apr 10, 3:25 PM CDT | High Wind Watch | GID | 24 hr |
| Apr 11, 2:43 PM CDT | Winter Weather Advisory | GID | 24 hr |
| Apr 11, 2:55 PM CDT | High Wind Warning | GID | 30 hr |
| Apr 12, 2:27 PM CDT | Winter Weather Advisory | GID | 72 min |
| Apr 15, 3:22 PM CDT | Winter Weather Advisory | GID | 31 hr |
| Apr 16, 1:29 PM CDT | Mesoscale Discussion | SPC | 4 hr |
| Apr 16, 9:17 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 20, 3:29 AM CDT | Red Flag Warning | GID | 17 hr |
| Apr 28, 3:24 PM CDT | Dust Storm Advisory | GID | 2 hr |
| Apr 28, 5:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| May 9, 3:40 AM CDT | Freeze Warning | GID | 29 hr |
| May 10, 1:00 PM CDT | Freeze Warning | GID | 15 hr |
| May 14, 1:12 AM CDT | Dense Fog Advisory | GID | 9 hr |
| May 22, 2:45 PM CDT | Areal Flood Advisory | GID | 27 hr |
| May 24, 2:53 AM CDT | Special Weather Statement | GID | 37 min |
| May 24, 3:10 AM CDT | Flash Flood Watch | GID | 40 hr |
| May 24, 3:33 AM CDT | Special Weather Statement | GID | 42 min |
| Jun 3, 6:18 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 3, 8:53 PM CDT | Severe Thunderstorm Warning | GID | 52 min |
| Jun 3, 8:54 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 3, 9:19 PM CDT | Severe Thunderstorm Warning | GID | 41 min |
| Jun 3, 9:37 PM CDT | Severe Thunderstorm Warning | GID | 38 min |
| Jun 3, 9:54 PM CDT | Severe Thunderstorm Warning | GID | 51 min |
| Jun 3, 10:11 PM CDT | Severe Thunderstorm Warning | GID | 28 min |
| Jun 4, 7:42 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 4, 9:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 4, 10:35 PM CDT | Special Weather Statement | GID | 25 min |
| Jun 4, 10:52 PM CDT | Special Weather Statement | GID | 38 min |
| Jun 4, 10:59 PM CDT | Severe Thunderstorm Warning | GID | 18 min |
| Jun 8, 2:36 PM CDT | Flash Flood Watch | GID | 36 hr |
| Jun 8, 2:40 PM CDT | High Wind Watch | GID | 13 hr |
| Jun 9, 3:27 AM CDT | High Wind Warning | GID | 23 hr |
| Jun 9, 2:25 PM CDT | Special Weather Statement | GID | 35 min |
| Jun 9, 2:36 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 9, 4:30 PM CDT | Special Weather Statement | GID | 45 min |
| Jun 18, 3:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jun 21, 2:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 21, 3:19 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 21, 6:59 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 12:31 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 27, 8:22 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 28, 12:52 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 28, 1:28 AM CDT | Severe Thunderstorm Warning | GID | 47 min |
| Jun 28, 2:14 AM CDT | Mesoscale Discussion | SPC | 61 min |
| Jun 28, 2:17 AM CDT | Special Weather Statement | GID | 43 min |
| Jun 30, 6:34 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 30, 9:26 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 9:48 PM CDT | Severe Thunderstorm Warning | GID | 57 min |
| Jun 30, 10:35 PM CDT | Special Weather Statement | GID | 40 min |
| Jun 30, 10:47 PM CDT | Severe Thunderstorm Warning | GID | 43 min |
| Jun 30, 11:23 PM CDT | Special Weather Statement | GID | 52 min |
| Jul 1, 12:10 AM CDT | Special Weather Statement | GID | 35 min |
| Jul 1, 1:48 AM CDT | Special Weather Statement | GID | 27 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, 11:31 PM CDT | Severe Thunderstorm Warning | GID | 44 min |
| Jul 8, 11:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jul 8, 11:58 PM CDT | Severe Thunderstorm Warning | GID | 62 min |
| Jul 11, 12:35 AM CDT | Special Weather Statement | GID | 40 min |
| Jul 11, 12:41 AM CDT | Severe Thunderstorm Warning | GID | 49 min |
| Jul 11, 1:03 AM CDT | Severe Thunderstorm Warning | GID | 27 min |
| Jul 11, 1:23 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 11, 1:34 AM CDT | Special Weather Statement | GID | 41 min |
| Jul 13, 8:55 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jul 13, 9:21 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 16, 5:19 AM CDT | Dense Fog Advisory | GID | 3 hr |
| Jul 17, 3:28 AM CDT | Heat Advisory | GID | 38 hr |
| Jul 18, 5:55 PM CDT | Heat Advisory | GID | 2 hr |
| Jul 20, 2:14 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 3:16 PM CDT | Heat Advisory | GID | 29 hr |
| Jul 26, 2:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Aug 9, 3:46 AM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 14, 2:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Aug 14, 4:34 PM CDT | Severe Thunderstorm Warning | GID | 41 min |
| Aug 14, 5:05 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 14, 5:11 PM CDT | Severe Thunderstorm Warning | GID | 49 min |
| Aug 14, 5:16 PM CDT | Tornado Warning | GID | 29 min |
| Aug 14, 5:42 PM CDT | Tornado Warning | GID | 33 min |
| Aug 14, 5:58 PM CDT | Severe Thunderstorm Warning | GID | 23 min |
| Aug 16, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 16, 6:13 PM CDT | Severe Thunderstorm Warning | GID | 47 min |
| Aug 16, 6:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Aug 16, 6:55 PM CDT | Severe Thunderstorm Warning | GID | 50 min |
| Aug 30, 11:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 31, 2:19 AM CDT | Special Weather Statement | GID | 41 min |
| Sep 29, 3:21 AM CDT | Red Flag Warning | GID | 16 hr |
| Oct 1, 3:47 AM CDT | Frost Advisory | GID | 29 hr |
| Oct 11, 8:44 PM CDT | Special Weather Statement | GID | 31 min |
| Oct 11, 9:02 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Oct 13, 3:25 PM CDT | Fire Weather Watch | GID | 12 hr |
| Oct 13, 3:25 PM CDT | Red Flag Warning | GID | 28 hr |
| Oct 15, 2:41 AM CDT | Frost Advisory | GID | 31 hr |
| Oct 18, 3:48 PM CDT | Freeze Warning | GID | 16 hr |
| Oct 21, 3:24 PM CDT | Dense Fog Advisory | GID | 19 hr |
| Oct 21, 3:24 PM CDT | Freeze Watch | GID | 12 hr |
| Oct 22, 3:38 AM CDT | Freeze Warning | GID | 30 hr |
| Oct 23, 3:45 AM CDT | Freeze Warning | GID | 30 hr |
| Oct 23, 5:57 PM CDT | Winter Weather Advisory | GID | 67 hr |
| Nov 7, 2:19 PM CST | High Wind Watch | GID | 13 hr |
| Nov 8, 3:24 AM CST | High Wind Warning | GID | 12 hr |
| Nov 9, 3:19 PM CST | Winter Weather Advisory | GID | 23 hr |
| Nov 10, 12:05 AM CST | Ice Storm Warning | GID | 9 hr |
| Dec 10, 10:57 AM CST | Winter Weather Advisory | GID | 43 hr |
| Dec 22, 3:05 PM CST | High Wind Warning | GID | 27 hr |
| Dec 22, 3:31 PM CST | Winter Weather Advisory | GID | 26 hr |
| Dec 23, 3:09 AM CST | Blizzard Warning | GID | 15 hr |
| Dec 27, 2:26 PM CST | Winter Storm Watch | GID | 13 hr |
| Dec 28, 3:01 AM CST | Winter Weather Advisory | GID | 42 hr |
| Dec 29, 7:47 AM CST | Winter Storm Warning | GID | 5 hr |
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 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.