Alert archive / Nebraska / Sheridan County
Weather alerts in Sheridan County, Nebraska, 2012
141 weather alerts in 2012, 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 2012. Tap one for its archive.
- Alerts
- 141
- Warnings
- 61
- Watches
- 32
- Advisories
- 36
- Busiest month
- March35 alerts
- Busiest day
- June 20, 20126 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, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 10 | 5 | 50% | 9 | 78% | 12 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS North Platte, NE: tornado warnings | 26 | 9 | 65% | 31 | 71% | 11 min |
| NWS North Platte, NE: severe thunderstorm warnings | 201 | 114 | 43% | 223 | 78% | 22 min |
| NWS North Platte, NE: flash flood warnings | 2 | 2 | 0% | 2 | 100% | 44 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 10, 11:05 AM MST | Wind Advisory | LBF | 30 hr |
| Jan 15, 12:29 PM MST | Red Flag Warning | LBF | 5 hr |
| Jan 17, 5:18 AM MST | Wind Chill Advisory | LBF | 3 hr |
| Jan 17, 2:21 PM MST | Wind Advisory | LBF | 26 hr |
| Jan 21, 2:28 PM MST | Wind Advisory | LBF | 30 hr |
| Jan 22, 3:12 AM MST | Winter Weather Advisory | LBF | 17 hr |
| Jan 26, 11:25 AM MST | Wind Advisory | LBF | 30 hr |
| Feb 7, 5:10 AM MST | Winter Weather Advisory | LBF | 6 hr |
| Feb 19, 3:02 PM MST | Winter Weather Advisory | LBF | 25 hr |
| Feb 21, 1:39 PM MST | Wind Advisory | LBF | 25 hr |
| Feb 22, 2:46 PM MST | Wind Advisory | LBF | 26 hr |
| Feb 25, 7:15 PM MST | Wind Advisory | LBF | 19 hr |
| Feb 25, 9:40 PM MST | High Wind Warning | LBF | 17 hr |
| Feb 26, 2:20 PM MST | Winter Storm Watch | LBF | 36 hr |
| Feb 27, 2:10 PM MST | Winter Weather Advisory | LBF | 21 hr |
| Feb 28, 6:27 PM MST | Winter Weather Advisory | LBF | 14 hr |
| Mar 3, 2:21 PM MST | Wind Advisory | LBF | 27 hr |
| Mar 4, 3:00 PM MST | Fire Weather Watch | LBF | 12 hr |
| Mar 5, 11:40 AM MST | Red Flag Warning | LBF | 6 hr |
| Mar 5, 3:26 PM MST | Fire Weather Watch | LBF | 4 hr |
| Mar 5, 7:06 PM MST | Red Flag Warning | LBF | 22 hr |
| Mar 8, 10:00 AM MST | Fire Weather Watch | LBF | 17 hr |
| Mar 9, 2:40 AM MST | Red Flag Warning | LBF | 15 hr |
| Mar 9, 3:00 PM MST | Fire Weather Watch | LBF | 12 hr |
| Mar 10, 2:35 AM MST | Red Flag Warning | LBF | 15 hr |
| Mar 11, 2:42 PM MDT | Fire Weather Watch | LBF | 13 hr |
| Mar 12, 3:25 AM MDT | Fire Weather Watch | LBF | 11 hr |
| Mar 12, 3:25 AM MDT | Red Flag Warning | LBF | 16 hr |
| Mar 12, 2:53 PM MDT | Red Flag Warning | LBF | 28 hr |
| Mar 13, 7:01 PM MDT | Fire Weather Watch | LBF | 7 hr |
| Mar 15, 3:00 AM MDT | Fire Weather Watch | LBF | 11 hr |
| Mar 15, 2:22 PM MDT | Red Flag Warning | LBF | 29 hr |
| Mar 16, 2:53 PM MDT | Fire Weather Watch | LBF | 12 hr |
| Mar 17, 2:49 AM MDT | High Wind Watch | LBF | 24 hr |
| Mar 17, 3:11 AM MDT | Red Flag Warning | LBF | 16 hr |
| Mar 17, 2:55 PM MDT | Red Flag Warning | LBF | 31 hr |
| Mar 18, 3:09 AM MDT | High Wind Warning | LBF | 19 hr |
| Mar 18, 3:09 AM MDT | Wind Advisory | LBF | 24 hr |
| Mar 19, 3:19 AM MDT | Red Flag Warning | LBF | 15 hr |
| Mar 25, 2:53 AM MDT | Fire Weather Watch | LBF | 17 hr |
| Mar 25, 2:40 PM MDT | High Wind Watch | LBF | 11 hr |
| Mar 25, 2:40 PM MDT | Wind Advisory | LBF | 32 hr |
| Mar 25, 8:09 PM MDT | Red Flag Warning | LBF | 25 hr |
| Mar 26, 2:06 AM MDT | High Wind Warning | LBF | 21 hr |
| Mar 26, 3:01 PM MDT | Red Flag Warning | LBF | 27 hr |
| Mar 27, 1:30 AM MDT | Wind Advisory | LBF | 13 hr |
| Mar 29, 5:48 AM MDT | Dense Fog Advisory | LBF | 5 hr |
| Mar 29, 3:02 PM MDT | Fire Weather Watch | LBF | 7 hr |
| Mar 29, 10:14 PM MDT | Red Flag Warning | LBF | 21 hr |
| Mar 31, 2:33 PM MDT | Fire Weather Watch | LBF | 12 hr |
| Mar 31, 2:41 PM MDT | Wind Advisory | LBF | 57 hr |
| Apr 2, 9:00 AM MDT | High Wind Warning | LBF | 9 hr |
| Apr 5, 1:58 PM MDT | Wind Advisory | LBF | 30 hr |
| Apr 6, 2:46 AM MDT | Fire Weather Watch | LBF | 24 hr |
| Apr 7, 2:54 AM MDT | Red Flag Warning | LBF | 16 hr |
| Apr 11, 2:58 AM MDT | Wind Advisory | LBF | 17 hr |
| Apr 14, 2:14 PM MDT | Wind Advisory | LBF | 31 hr |
| Apr 27, 1:21 PM MDT | Wind Advisory | LBF | 7 hr |
| May 7, 2:04 PM MDT | Freeze Warning | LBF | 17 hr |
| May 8, 1:38 PM MDT | Frost Advisory | LBF | 17 hr |
| May 10, 2:58 AM MDT | Wind Advisory | LBF | 22 hr |
| May 11, 2:15 PM MDT | Frost Advisory | LBF | 17 hr |
| May 15, 2:30 PM MDT | Red Flag Warning | LBF | 30 hr |
| May 18, 2:54 PM MDT | Mesoscale Discussion | SPC | 96 min |
| May 22, 2:31 AM MDT | Red Flag Warning | LBF | 17 hr |
| May 26, 3:48 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 26, 7:50 PM MDT | Dense Fog Advisory | LBF | 4 hr |
| May 27, 3:36 AM MDT | Red Flag Warning | LBF | 14 hr |
| Jun 2, 6:33 PM MDT | Severe Thunderstorm Warning | LBF | 57 min |
| Jun 7, 8:36 PM MDT | Severe Thunderstorm Warning | LBF | 24 min |
| Jun 7, 10:38 PM MDT | Severe Thunderstorm Warning | LBF | 36 min |
| Jun 12, 1:23 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Jun 15, 3:59 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jun 15, 4:14 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 17, 12:29 PM MDT | Red Flag Warning | LBF | 10 hr |
| Jun 19, 7:50 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jun 19, 10:59 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jun 19, 11:48 PM MDT | Severe Thunderstorm Warning | LBF | 42 min |
| Jun 19, 11:57 PM MDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 20, 12:26 AM MDT | Severe Thunderstorm Warning | LBF | 49 min |
| Jun 20, 3:00 AM MDT | Mesoscale Discussion | SPC | 60 min |
| Jun 22, 2:28 PM MDT | Fire Weather Watch | LBF | 20 hr |
| Jun 22, 3:52 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 22, 8:36 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Jun 25, 2:39 AM MDT | Red Flag Warning | LBF | 18 hr |
| Jun 25, 2:24 PM MDT | Heat Advisory | LBF | 30 hr |
| Jun 25, 6:13 PM MDT | Severe Thunderstorm Warning | LBF | 47 min |
| Jun 25, 7:47 PM MDT | Severe Thunderstorm Warning | LBF | 58 min |
| Jul 1, 5:43 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 15, 2:49 AM MDT | Red Flag Warning | LBF | 16 hr |
| Jul 20, 3:21 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Jul 21, 2:35 AM MDT | Red Flag Warning | LBF | 18 hr |
| Jul 21, 5:12 PM MDT | Mesoscale Discussion | SPC | 78 min |
| Jul 22, 2:32 AM MDT | Red Flag Warning | LBF | 18 hr |
| Jul 22, 6:59 PM MDT | Red Flag Warning | LBF | 26 hr |
| Jul 23, 7:07 PM MDT | Red Flag Warning | LBF | 26 hr |
| Aug 1, 2:19 PM MDT | Severe Thunderstorm Warning | LBF | 56 min |
| Aug 1, 2:19 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 1, 3:15 PM MDT | Severe Thunderstorm Warning | LBF | 44 min |
| Aug 5, 1:03 PM MDT | Fire Weather Watch | LBF | 14 hr |
| Aug 6, 2:47 AM MDT | Red Flag Warning | LBF | 19 hr |
| Aug 8, 1:25 PM MDT | Red Flag Warning | LBF | 6 hr |
| Aug 14, 8:19 PM MDT | Red Flag Warning | LBF | 22 hr |
| Aug 15, 2:42 AM MDT | Wind Advisory | LBF | 12 hr |
| Aug 18, 11:51 AM MDT | Red Flag Warning | LBF | 7 hr |
| Aug 22, 2:48 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Aug 26, 4:39 PM MDT | Severe Thunderstorm Warning | LBF | 66 min |
| Aug 27, 2:11 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Aug 27, 2:19 PM MDT | Fire Weather Watch | LBF | 12 hr |
| Aug 28, 2:21 AM MDT | Red Flag Warning | LBF | 18 hr |
| Aug 28, 2:21 AM MDT | Red Flag Warning | LBF | 44 hr |
| Aug 28, 2:37 PM MDT | Fire Weather Watch | LBF | 24 hr |
| Aug 29, 2:22 PM MDT | Red Flag Warning | LBF | 30 hr |
| Aug 30, 2:45 PM MDT | Fire Weather Watch | LBF | 12 hr |
| Aug 31, 2:44 AM MDT | Red Flag Warning | LBF | 43 hr |
| Sep 3, 3:59 PM MDT | Red Flag Warning | LBF | 29 hr |
| Sep 5, 1:40 AM MDT | Fire Weather Watch | LBF | 13 hr |
| Sep 5, 2:26 PM MDT | Red Flag Warning | LBF | 30 hr |
| Sep 8, 3:37 PM MDT | Fire Weather Watch | LBF | 11 hr |
| Sep 9, 2:28 AM MDT | Fire Weather Watch | LBF | 13 hr |
| Sep 9, 2:28 AM MDT | Red Flag Warning | LBF | 19 hr |
| Sep 9, 3:46 PM MDT | Red Flag Warning | LBF | 29 hr |
| Sep 10, 3:21 PM MDT | Red Flag Warning | LBF | 28 hr |
| Sep 14, 2:50 AM MDT | Fire Weather Watch | LBF | 23 hr |
| Sep 14, 1:58 PM MDT | Red Flag Warning | LBF | 30 hr |
| Sep 16, 2:23 AM MDT | Red Flag Warning | LBF | 18 hr |
| Oct 2, 2:28 PM MDT | Red Flag Warning | LBF | 30 hr |
| Oct 15, 2:24 PM MDT | Fire Weather Watch | LBF | 24 hr |
| Oct 16, 2:13 PM MDT | Wind Advisory | LBF | 37 hr |
| Oct 16, 2:53 PM MDT | Fire Weather Watch | LBF | 24 hr |
| Oct 16, 2:53 PM MDT | Red Flag Warning | LBF | 61 hr |
| Oct 17, 10:15 AM MDT | High Wind Warning | LBF | 32 hr |
| Oct 18, 6:26 PM MDT | Wind Advisory | LBF | 9 hr |
| Oct 19, 2:26 PM MDT | Red Flag Warning | LBF | 28 hr |
| Oct 24, 10:42 AM MDT | Winter Weather Advisory | LBF | 19 hr |
| Nov 9, 2:17 PM MST | Winter Weather Advisory | LBF | 34 hr |
| Nov 21, 12:40 PM MST | Red Flag Warning | LBF | 6 hr |
| Nov 21, 2:38 PM MST | Wind Advisory | LBF | 30 hr |
| Nov 24, 2:57 AM MST | Red Flag Warning | LBF | 13 hr |
| Nov 25, 11:18 PM MST | Winter Weather Advisory | LBF | 12 hr |
| Dec 24, 11:44 AM MST | Winter Weather Advisory | LBF | 22 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 | 10 |
| Severe Thunderstorm Watch | 5 |
| Mesoscale Discussion | 12 |
| Winter | |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 9 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 5 |
| High Wind Watch | 2 |
| Wind Advisory | 21 |
| Fire | |
| Red Flag Warning | 45 |
| Fire Weather Watch | 24 |
| 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 archive20112013
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.