Alert archive / Nebraska / Thomas County
Weather alerts in Thomas County, Nebraska, 2021
111 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Thomas County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 111
- Warnings
- 25
- Watches
- 21
- Advisories
- 25
- Busiest month
- July22 alerts
- Busiest day
- July 30, 20216 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Thomas County, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 10 | 2 | 80% | 0 | ||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS North Platte, NE: tornado warnings | 7 | 0 | 100% | 1 | 0% | |
| NWS North Platte, NE: severe thunderstorm warnings | 182 | 87 | 52% | 163 | 76% | 20 min |
| NWS North Platte, NE: flash flood warnings | 6 | 1 | 83% | 1 | 100% | 22 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, 2:12 PM CST | High Wind Watch | LBF | 24 hr |
| Jan 13, 1:59 PM CST | High Wind Warning | LBF | 52 hr |
| Jan 18, 2:00 PM CST | Special Weather Statement | LBF | 75 min |
| Jan 24, 3:41 AM CST | Winter Storm Watch | LBF | 10 hr |
| Jan 24, 1:16 PM CST | Winter Weather Advisory | LBF | 41 hr |
| Jan 28, 3:21 PM CST | Dense Fog Advisory | LBF | 24 hr |
| Jan 29, 10:36 PM CST | Dense Fog Advisory | LBF | 13 hr |
| Feb 1, 9:19 PM CST | Dense Fog Advisory | LBF | 15 hr |
| Feb 5, 3:25 AM CST | Winter Weather Advisory | LBF | 33 hr |
| Feb 5, 2:38 PM CST | Winter Storm Warning | LBF | 21 hr |
| Feb 6, 2:59 PM CST | Winter Weather Advisory | LBF | 30 hr |
| Feb 8, 3:20 AM CST | Wind Chill Advisory | LBF | 7 hr |
| Feb 8, 3:06 PM CST | Wind Chill Advisory | LBF | 19 hr |
| Feb 9, 2:46 PM CST | Wind Chill Advisory | LBF | 5 days |
| Feb 11, 3:58 AM CST | Winter Weather Advisory | LBF | 50 hr |
| Feb 13, 3:35 PM CST | Wind Chill Warning | LBF | 68 hr |
| Feb 16, 2:27 AM CST | Wind Chill Advisory | LBF | 29 hr |
| Mar 5, 3:28 AM CST | Fire Weather Watch | LBF | 10 hr |
| Mar 5, 1:25 PM CST | Red Flag Warning | LBF | 31 hr |
| Mar 12, 2:00 PM CST | Winter Weather Advisory | LBF | 67 hr |
| Mar 15, 2:27 PM CDT | Winter Weather Advisory | LBF | 22 hr |
| Mar 28, 2:07 AM CDT | Fire Weather Watch | LBF | 12 hr |
| Mar 28, 3:15 AM CDT | High Wind Watch | LBF | 24 hr |
| Mar 28, 2:19 PM CDT | Red Flag Warning | LBF | 55 hr |
| Mar 29, 3:39 AM CDT | High Wind Warning | LBF | 18 hr |
| Apr 4, 1:35 PM CDT | Fire Weather Watch | LBF | 13 hr |
| Apr 5, 1:28 PM CDT | Red Flag Warning | LBF | 8 hr |
| Apr 6, 6:49 PM CDT | Special Weather Statement | LBF | 41 min |
| Apr 6, 7:30 PM CDT | Special Weather Statement | LBF | 45 min |
| Apr 6, 7:43 PM CDT | Special Weather Statement | LBF | 47 min |
| Apr 6, 8:23 PM CDT | Special Weather Statement | LBF | 52 min |
| Apr 6, 9:13 PM CDT | Special Weather Statement | LBF | 47 min |
| Apr 15, 3:48 AM CDT | Winter Weather Advisory | LBF | 35 hr |
| Apr 25, 2:39 AM CDT | Fire Weather Watch | LBF | 25 hr |
| May 13, 4:12 PM CDT | Special Weather Statement | LBF | 48 min |
| May 13, 4:56 PM CDT | Special Weather Statement | LBF | 49 min |
| May 13, 6:36 PM CDT | Severe Thunderstorm Warning | LBF | 39 min |
| May 22, 5:16 PM CDT | Special Weather Statement | LBF | 44 min |
| May 23, 8:12 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 23, 8:54 PM CDT | Special Weather Statement | LBF | 51 min |
| May 23, 9:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 3:56 PM CDT | Special Weather Statement | LBF | 34 min |
| May 26, 5:39 PM CDT | Severe Thunderstorm Warning | LBF | 36 min |
| May 26, 6:07 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 26, 9:17 PM CDT | Severe Thunderstorm Warning | LBF | 43 min |
| Jun 9, 2:21 PM CDT | Heat Advisory | LBF | 30 hr |
| Jun 10, 8:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 10, 9:08 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 13, 7:15 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 2:40 PM CDT | Heat Advisory | LBF | 53 hr |
| Jun 22, 2:40 PM CDT | Heat Advisory | LBF | 29 hr |
| Jun 23, 3:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 23, 4:40 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 23, 6:13 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 3, 6:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jul 3, 10:53 PM CDT | Special Weather Statement | LBF | 52 min |
| Jul 9, 3:43 AM CDT | Special Weather Statement | LBF | 47 min |
| Jul 9, 3:16 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 9, 6:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 9, 8:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 9, 9:06 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 10, 12:45 AM CDT | Severe Thunderstorm Warning | LBF | 60 min |
| Jul 10, 1:37 AM CDT | Mesoscale Discussion | SPC | 53 min |
| Jul 10, 1:45 AM CDT | Mesoscale Discussion | SPC | 60 min |
| Jul 16, 4:55 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 16, 10:17 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 16, 11:11 PM CDT | Special Weather Statement | LBF | 64 min |
| Jul 26, 3:12 AM CDT | Heat Advisory | LBF | 66 hr |
| Jul 30, 3:24 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 30, 4:04 PM CDT | Tornado Watch | SPC | 6 hr |
| Jul 30, 5:58 PM CDT | Special Weather Statement | LBF | 47 min |
| Jul 30, 6:05 PM CDT | Severe Thunderstorm Warning | LBF | 40 min |
| Jul 30, 6:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Jul 30, 6:32 PM CDT | Severe Thunderstorm Warning | LBF | 43 min |
| Jul 30, 7:11 PM CDT | Special Weather Statement | LBF | 34 min |
| Jul 31, 12:27 AM CDT | Special Weather Statement | LBF | 48 min |
| Aug 5, 5:59 PM CDT | Severe Thunderstorm Warning | LBF | 46 min |
| Aug 19, 6:25 PM CDT | Tornado Watch | SPC | 6 hr |
| Aug 19, 9:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 22, 3:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Aug 24, 5:14 PM CDT | Special Weather Statement | LBF | 46 min |
| Aug 24, 5:59 PM CDT | Severe Thunderstorm Warning | LBF | 31 min |
| Aug 24, 6:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 26, 8:03 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 11, 11:06 PM CDT | Special Weather Statement | LBF | 39 min |
| Sep 11, 11:43 PM CDT | Severe Thunderstorm Warning | LBF | 62 min |
| Sep 13, 5:44 AM CDT | Dense Fog Advisory | LBF | 4 hr |
| Sep 16, 7:15 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 16, 8:16 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 16, 8:35 PM CDT | Severe Thunderstorm Warning | LBF | 55 min |
| Sep 16, 9:47 PM CDT | Special Weather Statement | LBF | 43 min |
| Sep 16, 11:14 PM CDT | Special Weather Statement | LBF | 46 min |
| Sep 29, 8:40 PM CDT | Areal Flood Advisory | LBF | 3 hr |
| Sep 29, 11:11 PM CDT | Areal Flood Advisory | LBF | 3 hr |
| Oct 13, 1:45 AM CDT | High Wind Warning | LBF | 16 hr |
| Oct 13, 1:30 PM CDT | Freeze Warning | LBF | 21 hr |
| Oct 26, 9:48 PM CDT | Special Weather Statement | LBF | 42 min |
| Nov 10, 2:35 PM CST | High Wind Warning | LBF | 39 hr |
| Nov 15, 3:03 PM CST | Red Flag Warning | LBF | 27 hr |
| Nov 22, 2:02 AM CST | Fire Weather Watch | LBF | 12 hr |
| Nov 22, 2:19 PM CST | Red Flag Warning | LBF | 28 hr |
| Dec 4, 8:07 AM CST | Dense Fog Advisory | LBF | 113 min |
| Dec 4, 10:21 AM CST | Dense Fog Advisory | LBF | 99 min |
| Dec 7, 2:56 PM CST | Winter Storm Watch | LBF | 37 hr |
| Dec 8, 3:00 PM CST | Winter Weather Advisory | LBF | 54 hr |
| Dec 13, 3:51 AM CST | High Wind Watch | LBF | 24 hr |
| Dec 14, 3:25 AM CST | High Wind Warning | LBF | 42 hr |
| Dec 14, 2:02 PM CST | Winter Weather Advisory | LBF | 31 hr |
| Dec 15, 3:17 PM CST | Snow Squall Warning | LBF | 43 min |
| Dec 15, 3:53 PM CST | Snow Squall Warning | LBF | 37 min |
| Dec 15, 4:05 PM CST | Mesoscale Discussion | SPC | 3 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 | 9 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 18 |
| Special Weather Statement | 22 |
| Flooding | |
| Areal Flood Advisory | 2 |
| Winter | |
| Snow Squall Warning | 2 |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 9 |
| Heat | |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Warning | 1 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 5 |
| High Wind Watch | 3 |
| Fire | |
| Red Flag Warning | 5 |
| Fire Weather Watch | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20202022
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.