Alert archive / Nebraska / Sheridan County
Weather alerts in Sheridan County, Nebraska, 2015
128 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 128
- Warnings
- 57
- Watches
- 21
- Advisories
- 20
- Busiest month
- June38 alerts
- Busiest day
- June 25, 201511 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 2 tornado warnings covering Sheridan County in 2015 had a tornado report inside them; 0 of 2 tornado reports fell inside a warning.
Sheridan County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 2 | 0% | |
| Severe thunderstorm warnings | 41 | 28 | 32% | 50 | 98% | 19 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS North Platte, NE: tornado warnings | 14 | 3 | 79% | 20 | 25% | 10 min |
| NWS North Platte, NE: severe thunderstorm warnings | 295 | 193 | 35% | 384 | 86% | 20 min |
| NWS North Platte, NE: flash flood warnings | 8 | 3 | 63% | 8 | 50% | 53 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 2, 2:49 PM MST | Winter Weather Advisory | LBF | 32 hr |
| Jan 3, 7:33 PM MST | Wind Chill Advisory | LBF | 15 hr |
| Jan 6, 12:51 PM MST | Wind Chill Advisory | LBF | 22 hr |
| Jan 7, 1:51 PM MST | Winter Weather Advisory | LBF | 30 hr |
| Jan 8, 2:18 PM MST | Wind Chill Advisory | LBF | 19 hr |
| Jan 31, 3:03 AM MST | Winter Weather Advisory | LBF | 38 hr |
| Feb 1, 7:00 PM MST | Wind Chill Advisory | LBF | 10 hr |
| Feb 3, 2:51 AM MST | Winter Weather Advisory | LBF | 32 hr |
| Mar 2, 2:41 AM MST | Winter Weather Advisory | LBF | 32 hr |
| Mar 9, 2:29 PM MDT | Fire Weather Watch | LBF | 24 hr |
| Mar 10, 2:12 PM MDT | Red Flag Warning | LBF | 29 hr |
| Mar 13, 1:30 PM MDT | Fire Weather Watch | LBF | 37 hr |
| Mar 14, 3:11 AM MDT | Red Flag Warning | LBF | 16 hr |
| Mar 20, 3:13 AM MDT | Red Flag Warning | LBF | 16 hr |
| Mar 20, 2:56 PM MDT | Fire Weather Watch | LBF | 12 hr |
| Mar 21, 3:25 AM MDT | Red Flag Warning | LBF | 16 hr |
| Mar 28, 2:04 AM MDT | Red Flag Warning | LBF | 24 hr |
| Mar 30, 2:39 AM MDT | Red Flag Warning | LBF | 17 hr |
| Mar 31, 2:43 AM MDT | Red Flag Warning | LBF | 20 hr |
| Apr 3, 2:36 AM MDT | Fire Weather Watch | LBF | 42 hr |
| Apr 13, 3:00 AM MDT | Fire Weather Watch | LBF | 12 hr |
| Apr 13, 2:40 PM MDT | Red Flag Warning | LBF | 29 hr |
| May 8, 7:42 AM MDT | Winter Storm Watch | LBF | 20 hr |
| May 9, 3:16 AM MDT | Winter Weather Advisory | LBF | 7 hr |
| May 9, 10:43 AM MDT | Winter Storm Warning | LBF | 31 hr |
| May 10, 2:26 PM MDT | Frost Advisory | LBF | 17 hr |
| May 11, 3:14 AM MDT | Freeze Watch | LBF | 11 hr |
| May 11, 1:57 PM MDT | Freeze Warning | LBF | 18 hr |
| May 15, 12:14 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 15, 12:58 PM MDT | Tornado Watch | SPC | 7 hr |
| May 15, 4:11 PM MDT | Severe Thunderstorm Warning | LBF | 49 min |
| May 15, 5:01 PM MDT | Severe Thunderstorm Warning | LBF | 44 min |
| May 15, 5:28 PM MDT | Mesoscale Discussion | SPC | 62 min |
| May 15, 6:00 PM MDT | Severe Thunderstorm Warning | LBF | 45 min |
| May 15, 6:47 PM MDT | Severe Thunderstorm Warning | LBF | 43 min |
| May 15, 7:20 PM MDT | Severe Thunderstorm Warning | LBF | 40 min |
| May 15, 7:20 PM MDT | Severe Thunderstorm Warning | LBF | 40 min |
| May 15, 7:40 PM MDT | Tornado Warning | LBF | 35 min |
| May 15, 7:55 PM MDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 15, 7:58 PM MDT | Severe Thunderstorm Warning | LBF | 47 min |
| May 15, 8:38 PM MDT | Severe Thunderstorm Warning | LBF | 52 min |
| May 15, 9:12 PM MDT | Tornado Warning | LBF | 33 min |
| May 15, 9:53 PM MDT | Mesoscale Discussion | SPC | 67 min |
| May 20, 1:46 PM MDT | Frost Advisory | LBF | 17 hr |
| Jun 2, 12:37 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Jun 2, 2:44 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 2, 5:26 PM MDT | Severe Thunderstorm Warning | LBF | 49 min |
| Jun 2, 5:27 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 2, 6:00 PM MDT | Severe Thunderstorm Warning | LBF | 45 min |
| Jun 16, 1:12 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 3:49 PM MDT | Tornado Watch | SPC | 7 hr |
| Jun 16, 6:34 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 17, 6:44 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jun 17, 8:06 PM MDT | Severe Thunderstorm Warning | LBF | 39 min |
| Jun 17, 8:45 PM MDT | Severe Thunderstorm Warning | LBF | 28 min |
| Jun 17, 10:37 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Jun 18, 12:03 AM MDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 18, 12:16 AM MDT | Severe Thunderstorm Warning | LBF | 59 min |
| Jun 18, 1:14 AM MDT | Severe Thunderstorm Warning | LBF | 46 min |
| Jun 18, 1:59 AM MDT | Severe Thunderstorm Warning | LBF | 31 min |
| Jun 20, 7:22 PM MDT | Severe Thunderstorm Warning | LBF | 38 min |
| Jun 20, 7:47 PM MDT | Mesoscale Discussion | SPC | 58 min |
| Jun 20, 7:58 PM MDT | Severe Thunderstorm Warning | LBF | 32 min |
| Jun 20, 8:29 PM MDT | Severe Thunderstorm Warning | LBF | 46 min |
| Jun 21, 12:39 AM MDT | Severe Thunderstorm Warning | LBF | 66 min |
| Jun 21, 2:41 AM MDT | Severe Thunderstorm Warning | LBF | 49 min |
| Jun 21, 3:30 AM MDT | Severe Thunderstorm Warning | LBF | 45 min |
| Jun 24, 2:21 AM MDT | Severe Thunderstorm Warning | LBF | 54 min |
| Jun 24, 2:43 AM MDT | Severe Thunderstorm Warning | LBF | 47 min |
| Jun 24, 3:12 AM MDT | Severe Thunderstorm Warning | LBF | 33 min |
| Jun 24, 3:45 AM MDT | Severe Thunderstorm Warning | LBF | 45 min |
| Jun 25, 12:57 AM MDT | Mesoscale Discussion | SPC | 93 min |
| Jun 25, 10:58 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 1:17 PM MDT | Severe Thunderstorm Warning | LBF | 43 min |
| Jun 25, 2:06 PM MDT | Severe Thunderstorm Warning | LBF | 39 min |
| Jun 25, 2:10 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Jun 25, 2:30 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 25, 4:47 PM MDT | Severe Thunderstorm Warning | LBF | 43 min |
| Jun 25, 5:22 PM MDT | Severe Thunderstorm Warning | LBF | 38 min |
| Jun 25, 5:22 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Jun 25, 5:51 PM MDT | Areal Flood Advisory | LBF | 3 hr |
| Jun 25, 5:57 PM MDT | Severe Thunderstorm Warning | LBF | 48 min |
| Jul 1, 11:30 PM MDT | Severe Thunderstorm Warning | LBF | 45 min |
| Jul 2, 12:06 AM MDT | Mesoscale Discussion | SPC | 54 min |
| Jul 4, 4:18 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Jul 5, 2:46 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jul 5, 3:33 PM MDT | Severe Thunderstorm Warning | LBF | 42 min |
| Jul 5, 3:51 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 5, 4:05 PM MDT | Severe Thunderstorm Warning | LBF | 40 min |
| Jul 5, 4:42 PM MDT | Severe Thunderstorm Warning | LBF | 25 min |
| Jul 5, 5:01 PM MDT | Severe Thunderstorm Warning | LBF | 44 min |
| Jul 5, 7:45 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Jul 17, 2:36 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Jul 17, 3:03 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 17, 4:07 PM MDT | Severe Thunderstorm Warning | LBF | 53 min |
| Jul 17, 4:43 PM MDT | Severe Thunderstorm Warning | LBF | 47 min |
| Jul 17, 5:02 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jul 25, 4:22 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 1:07 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 26, 2:10 PM MDT | Severe Thunderstorm Warning | LBF | 35 min |
| Jul 26, 2:13 PM MDT | Severe Thunderstorm Warning | LBF | 47 min |
| Jul 26, 3:12 PM MDT | Areal Flood Advisory | LBF | 3 hr |
| Jul 26, 4:22 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Jul 27, 3:57 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 27, 8:28 PM MDT | Severe Thunderstorm Warning | LBF | 47 min |
| Jul 27, 9:18 PM MDT | Severe Thunderstorm Warning | LBF | 42 min |
| Jul 27, 11:09 PM MDT | Special Weather Statement | LBF | 51 min |
| Aug 5, 5:51 PM MDT | Special Weather Statement | LBF | 54 min |
| Aug 7, 3:05 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 15, 6:01 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Aug 26, 7:05 PM MDT | Special Weather Statement | LBF | 40 min |
| Aug 26, 7:56 PM MDT | Special Weather Statement | LBF | 49 min |
| Sep 7, 4:46 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Oct 10, 2:38 AM MDT | Fire Weather Watch | LBF | 17 hr |
| Oct 10, 7:33 PM MDT | Red Flag Warning | LBF | 24 hr |
| Oct 14, 1:26 PM MDT | Freeze Watch | LBF | 14 hr |
| Oct 15, 2:57 AM MDT | Freeze Warning | LBF | 30 hr |
| Nov 10, 12:45 PM MST | Winter Weather Advisory | LBF | 28 hr |
| Nov 16, 1:43 PM MST | Winter Weather Advisory | LBF | 37 hr |
| Nov 19, 3:06 AM MST | Winter Weather Advisory | LBF | 35 hr |
| Nov 29, 3:37 AM MST | Winter Weather Advisory | LBF | 65 hr |
| Dec 11, 2:24 PM MST | Winter Weather Advisory | LBF | 34 hr |
| Dec 13, 2:15 AM MST | Winter Storm Watch | LBF | 35 hr |
| Dec 14, 1:01 PM MST | Winter Storm Warning | LBF | 45 hr |
| Dec 15, 10:48 AM MST | Mesoscale Discussion | SPC | 4 hr |
| Dec 17, 7:52 PM MST | Wind Chill Advisory | LBF | 6 hr |
| Dec 23, 2:06 PM MST | Winter Storm Watch | LBF | 24 hr |
| Dec 24, 2:23 PM MST | Winter Storm Warning | LBF | 50 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 archive20142016
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.