Alert archive / Nebraska / Sheridan County
Weather alerts in Sheridan County, Nebraska, 2018
177 weather alerts in 2018, 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 2018. Tap one for its archive.
- Alerts
- 177
- Warnings
- 52
- Watches
- 22
- Advisories
- 20
- Busiest month
- June55 alerts
- Busiest day
- May 10, 201813 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Sheridan County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 39 | 23 | 41% | 24 | 88% | 24 min |
| Flash flood warnings | 0 | 1 | 0% |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS North Platte, NE: tornado warnings | 15 | 6 | 60% | 13 | 77% | 25 min |
| NWS North Platte, NE: severe thunderstorm warnings | 282 | 185 | 34% | 358 | 84% | 21 min |
| NWS North Platte, NE: flash flood warnings | 6 | 0 | 100% | 7 | 0% |
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 1, 1:09 PM MST | Wind Chill Advisory | LBF | 20 hr |
| Jan 8, 8:19 PM MST | Winter Weather Advisory | LBF | 61 hr |
| Jan 14, 2:40 AM MST | Wind Chill Advisory | LBF | 56 hr |
| Jan 15, 2:22 PM MST | Wind Chill Warning | LBF | 21 hr |
| Jan 19, 2:41 AM MST | Winter Storm Watch | LBF | 24 hr |
| Jan 20, 2:24 AM MST | Winter Storm Warning | LBF | 57 hr |
| Feb 1, 7:32 PM MST | Severe Thunderstorm Watch | SPC | 135 days |
| Feb 8, 12:36 PM MST | Winter Weather Advisory | LBF | 34 hr |
| Feb 9, 8:56 PM MST | Wind Chill Advisory | LBF | 14 hr |
| Feb 10, 3:31 AM MST | Wind Chill Warning | LBF | 7 hr |
| Feb 17, 2:39 AM MST | Winter Storm Watch | LBF | 24 hr |
| Feb 18, 2:56 AM MST | Winter Storm Warning | LBF | 52 hr |
| Feb 20, 1:17 PM MST | Wind Chill Warning | LBF | 20 hr |
| Feb 23, 2:32 AM MST | Winter Weather Advisory | LBF | 34 hr |
| Mar 3, 2:57 AM MST | High Wind Watch | LBF | 36 hr |
| Mar 4, 1:47 AM MST | High Wind Warning | LBF | 42 hr |
| Mar 14, 2:31 AM MDT | Winter Storm Watch | LBF | 24 hr |
| Mar 15, 2:36 AM MDT | Winter Storm Warning | LBF | 41 hr |
| Mar 16, 3:04 AM MDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 30, 2:06 AM MDT | Dense Fog Advisory | LBF | 4 hr |
| Mar 30, 2:06 AM MDT | Winter Weather Advisory | LBF | 57 hr |
| Apr 4, 2:33 PM MDT | Winter Weather Advisory | LBF | 48 hr |
| Apr 5, 2:21 PM MDT | Winter Storm Warning | LBF | 24 hr |
| Apr 10, 1:39 PM MDT | Fire Weather Watch | LBF | 13 hr |
| Apr 10, 1:39 PM MDT | Red Flag Warning | LBF | 30 hr |
| Apr 10, 2:15 PM MDT | Winter Storm Watch | LBF | 44 hr |
| Apr 12, 10:36 AM MDT | Blizzard Warning | LBF | 58 hr |
| Apr 29, 9:24 PM MDT | Special Weather Statement | LBF | 51 min |
| May 7, 5:02 PM MDT | Special Weather Statement | LBF | 43 min |
| May 7, 6:19 PM MDT | Special Weather Statement | LBF | 41 min |
| May 7, 6:54 PM MDT | Special Weather Statement | LBF | 51 min |
| May 10, 12:56 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 10, 1:41 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 10, 3:34 PM MDT | Severe Thunderstorm Warning | LBF | 41 min |
| May 10, 3:37 PM MDT | Severe Thunderstorm Warning | LBF | 38 min |
| May 10, 4:25 PM MDT | Severe Thunderstorm Warning | LBF | 50 min |
| May 10, 4:28 PM MDT | Severe Thunderstorm Warning | LBF | 47 min |
| May 10, 4:57 PM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| May 10, 4:58 PM MDT | Severe Thunderstorm Warning | LBF | 47 min |
| May 10, 5:08 PM MDT | Severe Thunderstorm Warning | LBF | 52 min |
| May 10, 5:10 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 10, 5:22 PM MDT | Severe Thunderstorm Warning | LBF | 38 min |
| May 10, 5:50 PM MDT | Areal Flood Advisory | LBF | 3 hr |
| May 10, 5:56 PM MDT | Severe Thunderstorm Warning | LBF | 49 min |
| May 14, 6:23 PM MDT | Special Weather Statement | LBF | 52 min |
| May 17, 12:58 PM MDT | Mesoscale Discussion | SPC | 92 min |
| May 17, 4:19 PM MDT | Mesoscale Discussion | SPC | 116 min |
| May 17, 4:57 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 17, 6:47 PM MDT | Mesoscale Discussion | SPC | 58 min |
| May 17, 7:13 PM MDT | Severe Thunderstorm Warning | LBF | 47 min |
| May 17, 7:55 PM MDT | Severe Thunderstorm Warning | LBF | 50 min |
| May 23, 5:07 PM MDT | Mesoscale Discussion | SPC | 83 min |
| May 23, 7:28 PM MDT | Mesoscale Discussion | SPC | 92 min |
| May 27, 2:40 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 27, 5:41 PM MDT | Mesoscale Discussion | SPC | 94 min |
| May 27, 6:26 PM MDT | Special Weather Statement | LBF | 49 min |
| May 27, 7:31 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jun 1, 5:51 PM MDT | Special Weather Statement | LBF | 39 min |
| Jun 5, 7:08 PM MDT | Special Weather Statement | LBF | 37 min |
| Jun 6, 4:46 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 6, 6:45 PM MDT | Severe Thunderstorm Warning | LBF | 45 min |
| Jun 6, 6:46 PM MDT | Severe Thunderstorm Warning | LBF | 44 min |
| Jun 6, 7:49 PM MDT | Special Weather Statement | LBF | 41 min |
| Jun 6, 8:24 PM MDT | Special Weather Statement | LBF | 51 min |
| Jun 6, 8:32 PM MDT | Severe Thunderstorm Warning | LBF | 43 min |
| Jun 6, 8:49 PM MDT | Severe Thunderstorm Warning | LBF | 28 min |
| Jun 6, 9:20 PM MDT | Special Weather Statement | LBF | 40 min |
| Jun 6, 9:59 PM MDT | Special Weather Statement | LBF | 46 min |
| Jun 7, 9:12 PM MDT | Special Weather Statement | LBF | 48 min |
| Jun 7, 9:45 PM MDT | Special Weather Statement | LBF | 45 min |
| Jun 7, 10:26 PM MDT | Special Weather Statement | LBF | 49 min |
| Jun 8, 1:01 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jun 8, 4:55 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 8, 7:40 PM MDT | Mesoscale Discussion | SPC | 95 min |
| Jun 8, 7:47 PM MDT | Severe Thunderstorm Warning | LBF | 58 min |
| Jun 8, 8:02 PM MDT | Severe Thunderstorm Warning | LBF | 58 min |
| Jun 8, 8:47 PM MDT | Special Weather Statement | LBF | 58 min |
| Jun 8, 8:58 PM MDT | Special Weather Statement | LBF | 77 min |
| Jun 10, 4:59 PM MDT | Special Weather Statement | LBF | 46 min |
| Jun 10, 7:31 PM MDT | Special Weather Statement | LBF | 44 min |
| Jun 10, 7:42 PM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| Jun 10, 8:30 PM MDT | Special Weather Statement | LBF | 45 min |
| Jun 10, 11:02 PM MDT | Special Weather Statement | LBF | 43 min |
| Jun 11, 12:07 AM MDT | Special Weather Statement | LBF | 38 min |
| Jun 14, 5:09 PM MDT | Special Weather Statement | LBF | 51 min |
| Jun 15, 4:47 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jun 16, 2:15 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Jun 16, 5:08 PM MDT | Special Weather Statement | LBF | 37 min |
| Jun 16, 5:14 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jun 16, 6:48 PM MDT | Areal Flood Advisory | LBF | 3 hr |
| Jun 16, 6:59 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jun 16, 7:46 PM MDT | Areal Flood Advisory | LBF | 3 hr |
| Jun 16, 8:50 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jun 17, 1:13 AM MDT | Flash Flood Watch | LBF | 25 hr |
| Jun 22, 12:56 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Jun 22, 4:20 PM MDT | Special Weather Statement | LBF | 40 min |
| Jun 22, 4:37 PM MDT | Special Weather Statement | LBF | 38 min |
| Jun 22, 5:12 PM MDT | Special Weather Statement | LBF | 48 min |
| Jun 23, 4:14 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jun 28, 4:19 PM MDT | Special Weather Statement | LBF | 26 min |
| Jun 28, 4:47 PM MDT | Severe Thunderstorm Warning | LBF | 27 min |
| Jun 28, 5:10 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 29, 4:31 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Jun 29, 5:19 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 29, 7:41 PM MDT | Severe Thunderstorm Warning | LBF | 49 min |
| Jun 29, 8:06 PM MDT | Severe Thunderstorm Warning | LBF | 24 min |
| Jun 29, 8:25 PM MDT | Severe Thunderstorm Warning | LBF | 33 min |
| Jun 29, 8:27 PM MDT | Special Weather Statement | LBF | 33 min |
| Jun 29, 8:31 PM MDT | Special Weather Statement | LBF | 29 min |
| Jun 29, 8:49 PM MDT | Special Weather Statement | LBF | 26 min |
| Jun 30, 1:03 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jun 30, 2:26 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 12, 1:47 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 3:27 PM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| Jul 16, 2:52 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 16, 4:33 PM MDT | Special Weather Statement | LBF | 42 min |
| Jul 16, 5:06 PM MDT | Severe Thunderstorm Warning | LBF | 39 min |
| Jul 16, 5:32 PM MDT | Special Weather Statement | LBF | 43 min |
| Jul 16, 5:42 PM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| Jul 16, 5:45 PM MDT | Severe Thunderstorm Warning | LBF | 45 min |
| Jul 16, 6:23 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 16, 6:28 PM MDT | Severe Thunderstorm Warning | LBF | 47 min |
| Jul 16, 6:33 PM MDT | Special Weather Statement | LBF | 42 min |
| Jul 16, 7:09 PM MDT | Severe Thunderstorm Warning | LBF | 51 min |
| Jul 17, 1:10 PM MDT | Flash Flood Watch | LBF | 14 hr |
| Jul 17, 3:09 PM MDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 17, 5:49 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Jul 17, 10:04 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jul 17, 10:21 PM MDT | Special Weather Statement | LBF | 54 min |
| Jul 17, 11:18 PM MDT | Special Weather Statement | LBF | 42 min |
| Jul 17, 11:46 PM MDT | Special Weather Statement | LBF | 44 min |
| Jul 18, 12:19 AM MDT | Severe Thunderstorm Warning | LBF | 41 min |
| Jul 18, 12:57 AM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| Jul 18, 12:57 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 8:25 AM MDT | Mesoscale Discussion | SPC | 95 min |
| Jul 20, 9:21 AM MDT | Special Weather Statement | LBF | 54 min |
| Jul 25, 12:01 AM MDT | Severe Thunderstorm Warning | LBF | 44 min |
| Jul 25, 12:11 AM MDT | Special Weather Statement | LBF | 49 min |
| Jul 25, 12:46 AM MDT | Special Weather Statement | LBF | 44 min |
| Jul 25, 2:59 AM MDT | Special Weather Statement | LBF | 46 min |
| Jul 25, 3:33 AM MDT | Severe Thunderstorm Warning | LBF | 42 min |
| Jul 25, 4:01 AM MDT | Special Weather Statement | LBF | 29 min |
| Jul 25, 4:01 AM MDT | Mesoscale Discussion | SPC | 119 min |
| Jul 25, 4:30 AM MDT | Severe Thunderstorm Warning | LBF | 45 min |
| Jul 27, 4:55 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 27, 7:46 PM MDT | Severe Thunderstorm Warning | LBF | 59 min |
| Jul 27, 8:25 PM MDT | Severe Thunderstorm Warning | LBF | 50 min |
| Jul 27, 9:06 PM MDT | Severe Thunderstorm Warning | LBF | 22 min |
| Jul 28, 5:40 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 28, 6:18 PM MDT | Severe Thunderstorm Warning | LBF | 42 min |
| Jul 29, 12:46 PM MDT | Mesoscale Discussion | SPC | 59 min |
| Jul 29, 1:34 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 29, 3:22 PM MDT | Severe Thunderstorm Warning | LBF | 23 min |
| Jul 29, 4:07 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Aug 5, 10:06 PM MDT | Special Weather Statement | LBF | 39 min |
| Aug 5, 10:44 PM MDT | Special Weather Statement | LBF | 46 min |
| Aug 6, 2:49 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Aug 6, 6:20 PM MDT | Severe Thunderstorm Warning | LBF | 40 min |
| Aug 9, 1:45 PM MDT | Special Weather Statement | LBF | 45 min |
| Aug 15, 8:38 AM MDT | Special Weather Statement | LBF | 52 min |
| Aug 15, 10:32 AM MDT | Special Weather Statement | LBF | 43 min |
| Aug 18, 2:26 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 18, 3:50 PM MDT | Special Weather Statement | LBF | 40 min |
| Sep 3, 1:32 AM MDT | Dense Fog Advisory | LBF | 7 hr |
| Sep 25, 2:55 AM MDT | Frost Advisory | LBF | 29 hr |
| Sep 25, 1:21 PM MDT | Freeze Warning | LBF | 19 hr |
| Oct 4, 4:25 PM MDT | Freeze Watch | LBF | 18 hr |
| Oct 5, 10:05 AM MDT | Freeze Warning | LBF | 23 hr |
| Oct 8, 2:29 PM MDT | Winter Weather Advisory | LBF | 42 hr |
| Oct 13, 1:21 PM MDT | Winter Weather Advisory | LBF | 19 hr |
| Nov 17, 2:23 AM MST | Winter Weather Advisory | LBF | 18 hr |
| Nov 23, 1:45 AM MST | Winter Storm Watch | LBF | 17 hr |
| Nov 23, 7:11 PM MST | Winter Weather Advisory | LBF | 40 hr |
| Nov 28, 1:54 PM MST | Winter Storm Watch | LBF | 24 hr |
| Nov 29, 1:29 PM MST | Winter Storm Warning | LBF | 3 days |
| Dec 25, 1:42 PM MST | Winter Weather Advisory | LBF | 69 hr |
| Dec 30, 2:07 PM MST | Wind Chill Advisory | LBF | 45 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 | 39 |
| Severe Thunderstorm Watch | 11 |
| Mesoscale Discussion | 35 |
| Special Weather Statement | 48 |
| Flooding | |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 3 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 6 |
| Winter Weather Advisory | 10 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Warning | 3 |
| Freeze Watch | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.