Alert archive / Nebraska / Sheridan County
Weather alerts in Sheridan County, Nebraska, 2017
144 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sheridan County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 144
- Warnings
- 49
- Watches
- 18
- Advisories
- 21
- Busiest month
- July31 alerts
- Busiest day
- June 13, 201715 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 3 tornado warnings covering Sheridan County in 2017 had a tornado report inside them; 1 of 2 tornado reports fell inside a warning, on average 3 minutes after it went out.
Sheridan County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 2 | 50% | 3 min |
| Severe thunderstorm warnings | 28 | 13 | 54% | 13 | 92% | 15 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS North Platte, NE: tornado warnings | 17 | 3 | 82% | 12 | 58% | 12 min |
| NWS North Platte, NE: severe thunderstorm warnings | 263 | 152 | 42% | 294 | 83% | 17 min |
| NWS North Platte, NE: flash flood warnings | 16 | 6 | 63% | 16 | 56% | 131 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 3, 3:07 AM MST | Wind Chill Advisory | LBF | 32 hr |
| Jan 4, 2:23 AM MST | Wind Chill Advisory | LBF | 33 hr |
| Jan 4, 10:26 PM MST | Wind Chill Warning | LBF | 13 hr |
| Jan 5, 2:00 AM MST | Wind Chill Warning | LBF | 33 hr |
| Jan 6, 2:15 PM MST | Wind Chill Advisory | LBF | 19 hr |
| Jan 22, 2:15 PM MST | Winter Storm Watch | LBF | 25 hr |
| Jan 23, 3:13 PM MST | Winter Storm Warning | LBF | 40 hr |
| Feb 7, 11:31 AM MST | Winter Weather Advisory | LBF | 19 hr |
| Feb 21, 3:09 AM MST | Red Flag Warning | LBF | 15 hr |
| Feb 21, 12:42 PM MST | Winter Storm Watch | LBF | 25 hr |
| Feb 22, 1:14 PM MST | Winter Storm Warning | LBF | 46 hr |
| Feb 23, 5:31 AM MST | Mesoscale Discussion | SPC | 4 hr |
| Mar 4, 1:27 PM MST | Fire Weather Watch | LBF | 14 hr |
| Mar 5, 3:01 AM MST | High Wind Watch | LBF | 11 hr |
| Mar 5, 3:08 AM MST | Red Flag Warning | LBF | 40 hr |
| Mar 5, 1:45 PM MST | High Wind Warning | LBF | 28 hr |
| Mar 6, 1:57 PM MST | Red Flag Warning | LBF | 28 hr |
| Mar 6, 2:09 PM MST | Special Weather Statement | LBF | 81 min |
| Mar 6, 3:13 PM MST | Special Weather Statement | LBF | 92 min |
| Mar 7, 9:55 AM MST | High Wind Warning | LBF | 7 hr |
| Mar 15, 1:55 PM MDT | Red Flag Warning | LBF | 29 hr |
| Mar 17, 3:20 PM MDT | Fire Weather Watch | LBF | 23 hr |
| Mar 18, 3:30 AM MDT | Red Flag Warning | LBF | 40 hr |
| Mar 23, 2:53 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 6, 8:14 PM MDT | Fire Weather Watch | LBF | 7 hr |
| Apr 7, 2:59 AM MDT | Red Flag Warning | LBF | 16 hr |
| Apr 13, 4:08 AM MDT | Dense Fog Advisory | LBF | 5 hr |
| Apr 17, 11:48 PM MDT | Special Weather Statement | LBF | 42 min |
| May 14, 9:35 PM MDT | Special Weather Statement | LBF | 40 min |
| May 14, 10:10 PM MDT | Special Weather Statement | LBF | 50 min |
| May 14, 11:30 PM MDT | Severe Thunderstorm Warning | LBF | 45 min |
| May 15, 4:40 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 15, 6:34 PM MDT | Mesoscale Discussion | SPC | 56 min |
| May 15, 9:53 PM MDT | Mesoscale Discussion | SPC | 67 min |
| May 15, 10:35 PM MDT | Special Weather Statement | LBF | 40 min |
| May 15, 10:46 PM MDT | Severe Thunderstorm Warning | LBF | 44 min |
| May 15, 11:28 PM MDT | Special Weather Statement | LBF | 47 min |
| May 16, 12:01 AM MDT | Severe Thunderstorm Warning | LBF | 44 min |
| May 16, 4:47 PM MDT | Mesoscale Discussion | SPC | 88 min |
| May 20, 2:50 AM MDT | Frost Advisory | LBF | 28 hr |
| May 23, 1:46 PM MDT | Frost Advisory | LBF | 17 hr |
| May 28, 2:54 PM MDT | Mesoscale Discussion | SPC | 66 min |
| Jun 5, 9:24 PM MDT | Special Weather Statement | LBF | 51 min |
| Jun 12, 5:05 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jun 12, 5:35 PM MDT | Tornado Watch | SPC | 8 hr |
| Jun 12, 6:45 PM MDT | Special Weather Statement | LBF | 45 min |
| Jun 12, 6:57 PM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| Jun 12, 7:43 PM MDT | Severe Thunderstorm Warning | LBF | 47 min |
| Jun 12, 8:00 PM MDT | Areal Flood Advisory | LBF | 60 min |
| Jun 12, 8:02 PM MDT | Mesoscale Discussion | SPC | 58 min |
| Jun 12, 8:09 PM MDT | Severe Thunderstorm Warning | LBF | 51 min |
| Jun 12, 8:17 PM MDT | Severe Thunderstorm Warning | LBF | 58 min |
| Jun 12, 8:25 PM MDT | Severe Thunderstorm Warning | LBF | 29 min |
| Jun 12, 8:37 PM MDT | Tornado Warning | LBF | 38 min |
| Jun 12, 9:04 PM MDT | Tornado Warning | LBF | 41 min |
| Jun 12, 9:12 PM MDT | Areal Flood Advisory | LBF | 63 min |
| Jun 12, 9:18 PM MDT | Severe Thunderstorm Warning | LBF | 42 min |
| Jun 12, 9:44 PM MDT | Tornado Warning | LBF | 46 min |
| Jun 12, 9:54 PM MDT | Severe Thunderstorm Warning | LBF | 66 min |
| Jun 12, 10:14 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jun 27, 2:04 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 27, 4:07 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 27, 4:14 PM MDT | Special Weather Statement | LBF | 46 min |
| Jun 27, 4:27 PM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| Jun 27, 8:17 PM MDT | Severe Thunderstorm Warning | LBF | 43 min |
| Jun 27, 8:53 PM MDT | Severe Thunderstorm Warning | LBF | 67 min |
| Jun 28, 3:07 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jun 28, 4:36 PM MDT | Special Weather Statement | LBF | 39 min |
| Jul 2, 3:02 PM MDT | Special Weather Statement | LBF | 43 min |
| Jul 2, 3:09 PM MDT | Severe Thunderstorm Warning | LBF | 51 min |
| Jul 2, 3:56 PM MDT | Severe Thunderstorm Warning | LBF | 49 min |
| Jul 2, 4:03 PM MDT | Special Weather Statement | LBF | 42 min |
| Jul 2, 4:14 PM MDT | Severe Thunderstorm Warning | LBF | 24 min |
| Jul 2, 4:30 PM MDT | Severe Thunderstorm Warning | LBF | 30 min |
| Jul 2, 4:41 PM MDT | Severe Thunderstorm Warning | LBF | 18 min |
| Jul 2, 4:58 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 2, 7:45 PM MDT | Severe Thunderstorm Warning | LBF | 45 min |
| Jul 3, 4:06 PM MDT | Special Weather Statement | LBF | 24 min |
| Jul 3, 4:32 PM MDT | Severe Thunderstorm Warning | LBF | 28 min |
| Jul 3, 4:49 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jul 5, 6:44 PM MDT | Severe Thunderstorm Warning | LBF | 46 min |
| Jul 6, 10:05 PM MDT | Special Weather Statement | LBF | 40 min |
| Jul 6, 10:11 PM MDT | Severe Thunderstorm Warning | LBF | 49 min |
| Jul 6, 10:53 PM MDT | Special Weather Statement | LBF | 52 min |
| Jul 7, 6:27 PM MDT | Special Weather Statement | LBF | 48 min |
| Jul 7, 7:04 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Jul 7, 8:57 PM MDT | Special Weather Statement | LBF | 48 min |
| Jul 7, 9:42 PM MDT | Special Weather Statement | LBF | 48 min |
| Jul 7, 10:27 PM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| Jul 10, 4:08 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 8:50 PM MDT | Severe Thunderstorm Warning | LBF | 40 min |
| Jul 17, 9:18 PM MDT | Severe Thunderstorm Warning | LBF | 42 min |
| Jul 17, 11:00 PM MDT | Special Weather Statement | LBF | 45 min |
| Jul 18, 6:58 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 1:09 PM MDT | Special Weather Statement | LBF | 51 min |
| Jul 25, 3:21 AM MDT | Red Flag Warning | LBF | 16 hr |
| Jul 25, 1:41 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 25, 2:22 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 27, 5:40 PM MDT | Severe Thunderstorm Warning | LBF | 50 min |
| Aug 1, 3:00 PM MDT | Special Weather Statement | LBF | 30 min |
| Aug 2, 1:15 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 2, 3:47 PM MDT | Special Weather Statement | LBF | 43 min |
| Aug 8, 2:05 PM MDT | Special Weather Statement | LBF | 40 min |
| Aug 11, 6:02 PM MDT | Special Weather Statement | LBF | 43 min |
| Aug 12, 1:36 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Aug 12, 2:59 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 12, 5:16 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Aug 14, 8:17 PM MDT | Special Weather Statement | LBF | 28 min |
| Aug 14, 8:26 PM MDT | Special Weather Statement | LBF | 49 min |
| Aug 14, 8:31 PM MDT | Severe Thunderstorm Warning | LBF | 44 min |
| Aug 14, 11:27 PM MDT | Special Weather Statement | LBF | 48 min |
| Aug 15, 2:52 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Aug 15, 4:03 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 17, 5:00 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 24, 4:40 PM MDT | Special Weather Statement | LBF | 50 min |
| Aug 24, 5:16 PM MDT | Special Weather Statement | LBF | 44 min |
| Aug 26, 1:13 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 26, 2:04 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 26, 3:24 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 26, 4:45 PM MDT | Special Weather Statement | LBF | 45 min |
| Aug 26, 6:17 PM MDT | Severe Thunderstorm Warning | LBF | 29 min |
| Aug 26, 6:40 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 3, 2:30 AM MDT | Red Flag Warning | LBF | 18 hr |
| Sep 5, 12:49 PM MDT | Frost Advisory | LBF | 18 hr |
| Sep 15, 11:33 PM MDT | Special Weather Statement | LBF | 42 min |
| Sep 18, 2:05 PM MDT | Red Flag Warning | LBF | 25 hr |
| Sep 25, 2:22 PM MDT | Frost Advisory | LBF | 17 hr |
| Sep 26, 1:53 PM MDT | Frost Advisory | LBF | 17 hr |
| Oct 3, 2:52 AM MDT | Freeze Watch | LBF | 11 hr |
| Oct 3, 2:09 PM MDT | Frost Advisory | LBF | 18 hr |
| Oct 8, 2:06 AM MDT | Hard Freeze Watch | LBF | 12 hr |
| Oct 8, 2:56 PM MDT | Hard Freeze Warning | LBF | 42 hr |
| Oct 26, 12:33 PM MDT | Fire Weather Watch | LBF | 20 hr |
| Nov 6, 2:36 PM MST | Winter Weather Advisory | LBF | 16 hr |
| Nov 20, 10:07 AM MST | Red Flag Warning | LBF | 7 hr |
| Dec 3, 3:24 AM MST | Winter Weather Advisory | LBF | 38 hr |
| Dec 21, 2:23 AM MST | Winter Weather Advisory | LBF | 15 hr |
| Dec 22, 9:05 PM MST | Winter Weather Advisory | LBF | 29 hr |
| Dec 23, 1:55 PM MST | Wind Chill Advisory | LBF | 19 hr |
| Dec 24, 7:25 PM MST | Wind Chill Advisory | LBF | 7 hr |
| Dec 26, 1:40 PM MST | Wind Chill Advisory | LBF | 19 hr |
| Dec 29, 2:21 AM MST | Wind Chill Advisory | LBF | 33 hr |
| Dec 29, 10:55 AM MST | Wind Chill Watch | LBF | 16 hr |
| Dec 30, 2:38 AM MST | Wind Chill Warning | LBF | 56 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 archive20162018
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.