Alert archive / Wyoming / Weston County
Weather alerts in Weston County, Wyoming, 2015
131 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Weston County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 131
- Warnings
- 50
- Watches
- 19
- Advisories
- 13
- Busiest month
- June73 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.
Weston County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 41 | 27 | 34% | 21 | 90% | 21 min |
| Flash flood warnings | 3 | 2 | 33% | 3 | 100% | 182 min |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Rapid City, SD: tornado warnings | 16 | 5 | 69% | 11 | 64% | 14 min |
| NWS Rapid City, SD: severe thunderstorm warnings | 307 | 238 | 22% | 460 | 88% | 26 min |
| NWS Rapid City, SD: flash flood warnings | 18 | 9 | 50% | 13 | 92% | 99 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 4, 2:38 PM MST | Winter Weather Advisory | UNR | 29 hr |
| Jan 7, 2:40 PM MST | Winter Weather Advisory | UNR | 29 hr |
| Jan 8, 7:37 PM MST | Wind Chill Advisory | UNR | 15 hr |
| Feb 16, 3:31 AM MST | Winter Weather Advisory | UNR | 27 hr |
| Feb 24, 3:50 AM MST | Winter Weather Advisory | UNR | 44 hr |
| Mar 2, 2:50 AM MST | Winter Weather Advisory | UNR | 36 hr |
| Mar 3, 2:22 PM MST | Wind Chill Advisory | UNR | 18 hr |
| Mar 27, 2:19 PM MDT | High Wind Watch | UNR | 13 hr |
| Mar 28, 2:57 AM MDT | High Wind Warning | UNR | 30 hr |
| Apr 23, 5:43 PM MDT | Special Weather Statement | UNR | 47 min |
| May 7, 2:45 PM MDT | Winter Storm Watch | UNR | 37 hr |
| May 8, 1:55 PM MDT | Winter Storm Warning | UNR | 52 hr |
| May 20, 2:32 PM MDT | Frost Advisory | UNR | 16 hr |
| May 23, 3:05 PM MDT | Flood Watch | UNR | 43 hr |
| May 26, 5:56 PM MDT | Special Weather Statement | UNR | 49 min |
| Jun 2, 2:44 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 2, 3:46 PM MDT | Special Weather Statement | UNR | 29 min |
| Jun 2, 4:01 PM MDT | Severe Thunderstorm Warning | UNR | 44 min |
| Jun 2, 8:01 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Jun 2, 8:55 PM MDT | Severe Thunderstorm Warning | UNR | 35 min |
| Jun 3, 12:34 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 3, 2:03 PM MDT | Tornado Watch | SPC | 7 hr |
| Jun 3, 7:49 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jun 4, 12:13 AM MDT | Severe Thunderstorm Warning | UNR | 62 min |
| Jun 4, 1:29 AM MDT | Mesoscale Discussion | SPC | 91 min |
| Jun 4, 1:54 AM MDT | Severe Thunderstorm Warning | UNR | 66 min |
| Jun 5, 9:26 AM MDT | Flash Flood Watch | UNR | 18 hr |
| Jun 5, 4:08 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 6, 4:46 PM MDT | Special Weather Statement | UNR | 44 min |
| Jun 6, 5:00 PM MDT | Severe Thunderstorm Warning | UNR | 60 min |
| Jun 10, 3:52 AM MDT | Flash Flood Watch | UNR | 38 hr |
| Jun 10, 6:06 AM MDT | Special Weather Statement | UNR | 39 min |
| Jun 10, 2:32 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jun 10, 6:56 PM MDT | Flash Flood Warning | UNR | 3 hr |
| Jun 10, 9:45 PM MDT | Areal Flood Advisory | UNR | 12 hr |
| Jun 13, 11:49 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 12:37 AM MDT | Severe Thunderstorm Warning | UNR | 38 min |
| Jun 14, 12:53 AM MDT | Severe Thunderstorm Warning | UNR | 19 min |
| Jun 14, 1:16 AM MDT | Severe Thunderstorm Warning | UNR | 44 min |
| Jun 14, 1:46 AM MDT | Special Weather Statement | UNR | 29 min |
| Jun 14, 2:21 AM MDT | Special Weather Statement | UNR | 39 min |
| Jun 14, 3:02 AM MDT | Special Weather Statement | UNR | 58 min |
| Jun 14, 3:44 AM MDT | Severe Thunderstorm Warning | UNR | 61 min |
| Jun 15, 10:32 AM MDT | Flood Watch | UNR | 24 hr |
| Jun 16, 2:02 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 16, 4:53 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jun 17, 2:32 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jun 17, 5:39 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 17, 6:44 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jun 17, 9:06 PM MDT | Severe Thunderstorm Warning | UNR | 39 min |
| Jun 17, 9:49 PM MDT | Severe Thunderstorm Warning | UNR | 41 min |
| Jun 17, 10:04 PM MDT | Special Weather Statement | UNR | 26 min |
| Jun 17, 10:08 PM MDT | Flash Flood Warning | UNR | 3 hr |
| Jun 17, 10:28 PM MDT | Severe Thunderstorm Warning | UNR | 47 min |
| Jun 17, 10:37 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Jun 19, 2:51 PM MDT | Tornado Watch | SPC | 7 hr |
| Jun 19, 9:31 PM MDT | Severe Thunderstorm Warning | UNR | 59 min |
| Jun 20, 2:50 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Jun 20, 4:12 PM MDT | Special Weather Statement | UNR | 48 min |
| Jun 20, 4:21 PM MDT | Severe Thunderstorm Warning | UNR | 39 min |
| Jun 20, 4:58 PM MDT | Severe Thunderstorm Warning | UNR | 62 min |
| Jun 20, 5:40 PM MDT | Severe Thunderstorm Warning | UNR | 65 min |
| Jun 20, 5:45 PM MDT | Severe Thunderstorm Warning | UNR | 60 min |
| Jun 20, 10:40 PM MDT | Severe Thunderstorm Warning | UNR | 52 min |
| Jun 20, 11:00 PM MDT | Severe Thunderstorm Warning | UNR | 60 min |
| Jun 20, 11:24 PM MDT | Severe Thunderstorm Warning | UNR | 53 min |
| Jun 21, 12:05 AM MDT | Mesoscale Discussion | SPC | 85 min |
| Jun 23, 11:50 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 23, 11:55 PM MDT | Mesoscale Discussion | SPC | 35 min |
| Jun 24, 12:01 AM MDT | Severe Thunderstorm Warning | UNR | 59 min |
| Jun 24, 12:58 AM MDT | Severe Thunderstorm Warning | UNR | 62 min |
| Jun 24, 2:01 AM MDT | Severe Thunderstorm Warning | UNR | 59 min |
| Jun 24, 2:23 AM MDT | Mesoscale Discussion | SPC | 97 min |
| Jun 24, 9:05 AM MDT | Severe Thunderstorm Warning | UNR | 55 min |
| Jun 24, 9:46 AM MDT | Severe Thunderstorm Warning | UNR | 19 min |
| Jun 24, 12:27 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 24, 2:51 PM MDT | Flood Watch | UNR | 30 hr |
| Jun 24, 6:13 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 12:35 AM MDT | Severe Thunderstorm Warning | UNR | 55 min |
| Jun 25, 12:57 AM MDT | Mesoscale Discussion | SPC | 93 min |
| Jun 25, 1:14 AM MDT | Flash Flood Warning | UNR | 6 hr |
| Jun 25, 1:31 AM MDT | Severe Thunderstorm Warning | UNR | 74 min |
| Jun 25, 6:46 AM MDT | Mesoscale Discussion | SPC | 89 min |
| Jun 25, 11:51 AM MDT | Special Weather Statement | UNR | 39 min |
| Jun 25, 12:14 PM MDT | Severe Thunderstorm Warning | UNR | 61 min |
| Jun 25, 1:08 PM MDT | Severe Thunderstorm Warning | UNR | 37 min |
| Jun 25, 2:10 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Jun 25, 2:12 PM MDT | Areal Flood Warning | UNR | 24 hr |
| Jul 1, 6:48 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Jul 1, 9:52 PM MDT | Special Weather Statement | UNR | 38 min |
| Jul 1, 10:06 PM MDT | Severe Thunderstorm Warning | UNR | 54 min |
| Jul 1, 10:46 PM MDT | Severe Thunderstorm Warning | UNR | 59 min |
| Jul 7, 8:48 PM MDT | Special Weather Statement | UNR | 27 min |
| Jul 14, 11:00 PM MDT | Special Weather Statement | UNR | 45 min |
| Jul 14, 11:32 PM MDT | Special Weather Statement | UNR | 43 min |
| Jul 15, 6:35 PM MDT | Severe Thunderstorm Warning | UNR | 55 min |
| Jul 17, 2:36 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Jul 17, 8:15 PM MDT | Special Weather Statement | UNR | 30 min |
| Jul 21, 5:29 PM MDT | Special Weather Statement | UNR | 46 min |
| Jul 22, 6:26 PM MDT | Special Weather Statement | UNR | 49 min |
| Jul 24, 6:24 PM MDT | Special Weather Statement | UNR | 36 min |
| Jul 24, 6:33 PM MDT | Severe Thunderstorm Warning | UNR | 42 min |
| Jul 24, 7:10 PM MDT | Severe Thunderstorm Warning | UNR | 65 min |
| Jul 27, 2:50 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jul 27, 2:58 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 27, 3:33 PM MDT | Severe Thunderstorm Warning | UNR | 57 min |
| Aug 3, 1:50 PM MDT | Flash Flood Watch | UNR | 31 hr |
| Aug 4, 1:14 PM MDT | Severe Thunderstorm Warning | UNR | 46 min |
| Aug 4, 4:04 PM MDT | Areal Flood Advisory | UNR | 4 hr |
| Aug 5, 6:21 PM MDT | Severe Thunderstorm Warning | UNR | 54 min |
| Aug 5, 7:00 PM MDT | Severe Thunderstorm Warning | UNR | 60 min |
| Aug 8, 2:18 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Aug 8, 3:05 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 8, 7:07 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Aug 17, 1:10 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 17, 2:47 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 17, 6:16 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Aug 17, 7:30 PM MDT | Severe Thunderstorm Warning | UNR | 49 min |
| Aug 26, 7:38 PM MDT | Special Weather Statement | UNR | 52 min |
| Aug 26, 8:10 PM MDT | Special Weather Statement | UNR | 50 min |
| Aug 26, 8:14 PM MDT | Severe Thunderstorm Warning | UNR | 41 min |
| Aug 26, 8:48 PM MDT | Severe Thunderstorm Warning | UNR | 34 min |
| Sep 27, 7:30 PM MDT | Special Weather Statement | UNR | 45 min |
| Oct 15, 3:47 AM MDT | Freeze Warning | UNR | 29 hr |
| Nov 16, 2:54 PM MST | High Wind Watch | UNR | 24 hr |
| Nov 17, 2:57 AM MST | High Wind Warning | UNR | 40 hr |
| Nov 19, 2:37 PM MST | Winter Weather Advisory | UNR | 29 hr |
| Nov 24, 2:57 PM MST | Winter Weather Advisory | UNR | 42 hr |
| Dec 13, 3:12 AM MST | Winter Storm Watch | UNR | 35 hr |
| Dec 14, 3:13 AM MST | Winter Storm Warning | UNR | 55 hr |
| Dec 24, 2:22 PM MST | Winter Weather Advisory | UNR | 44 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.