Alert archive / Wyoming / Sweetwater County
Weather alerts in Sweetwater County, Wyoming, 2016
131 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sweetwater County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 131
- Warnings
- 46
- Watches
- 28
- Advisories
- 21
- Busiest month
- September20 alerts
- Busiest day
- May 7, 20167 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Sweetwater County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 5 | 2 | 60% | 3 | 67% | 20 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Riverton, WY: tornado warnings | 3 | 0 | 100% | 0 | ||
| NWS Riverton, WY: severe thunderstorm warnings | 46 | 10 | 78% | 33 | 39% | 18 min |
| NWS Riverton, WY: flash flood warnings | 5 | 0 | 100% | 1 | 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 23, 1:41 AM MST | Winter Weather Advisory | RIW | 57 hr |
| Jan 27, 2:36 PM MST | High Wind Watch | RIW | 18 hr |
| Jan 28, 1:51 PM MST | Winter Weather Advisory | RIW | 51 hr |
| Jan 29, 3:51 PM MST | High Wind Warning | RIW | 14 hr |
| Jan 31, 10:53 AM MST | Winter Weather Advisory | RIW | 46 hr |
| Feb 3, 12:35 AM MST | Winter Weather Advisory | RIW | 34 hr |
| Feb 4, 3:00 PM MST | High Wind Watch | RIW | 23 hr |
| Feb 5, 1:56 PM MST | High Wind Warning | RIW | 32 hr |
| Feb 13, 12:45 PM MST | High Wind Warning | RIW | 5 hr |
| Feb 15, 2:16 AM MST | High Wind Warning | RIW | 17 hr |
| Feb 16, 1:53 PM MST | High Wind Watch | RIW | 23 hr |
| Feb 17, 1:00 PM MST | High Wind Warning | RIW | 70 hr |
| Feb 18, 10:46 AM MST | Mesoscale Discussion | SPC | 119 min |
| Feb 25, 11:18 PM MST | High Wind Watch | RIW | 14 hr |
| Feb 26, 1:23 PM MST | High Wind Warning | RIW | 29 hr |
| Mar 7, 2:20 AM MST | Winter Weather Advisory | RIW | 19 hr |
| Mar 13, 12:10 PM MDT | Winter Weather Advisory | RIW | 33 hr |
| Mar 21, 12:56 AM MDT | Winter Weather Advisory | RIW | 59 hr |
| Mar 21, 12:20 PM MDT | Winter Storm Watch | RIW | 13 hr |
| Mar 22, 1:36 AM MDT | Winter Storm Warning | RIW | 34 hr |
| Mar 27, 4:10 AM MDT | Winter Storm Watch | RIW | 42 hr |
| Mar 27, 4:41 PM MDT | Winter Storm Warning | RIW | 69 hr |
| Mar 28, 1:16 PM MDT | Winter Weather Advisory | RIW | 53 hr |
| Apr 16, 1:59 AM MDT | Winter Weather Advisory | RIW | 34 hr |
| Apr 25, 2:53 AM MDT | Winter Storm Watch | RIW | 11 hr |
| Apr 25, 1:42 PM MDT | Winter Storm Warning | RIW | 34 hr |
| Apr 25, 1:42 PM MDT | Winter Weather Advisory | RIW | 34 hr |
| Apr 25, 7:20 PM MDT | Special Weather Statement | RIW | 40 min |
| Apr 29, 1:23 PM MDT | Winter Weather Advisory | RIW | 33 hr |
| May 6, 6:13 PM MDT | Special Weather Statement | RIW | 47 min |
| May 6, 6:19 PM MDT | Special Weather Statement | RIW | 41 min |
| May 6, 6:31 PM MDT | Areal Flood Advisory | RIW | 3 hr |
| May 6, 8:03 PM MDT | Special Weather Statement | RIW | 42 min |
| May 6, 8:56 PM MDT | Special Weather Statement | RIW | 49 min |
| May 7, 6:56 AM MDT | Special Weather Statement | RIW | 49 min |
| May 7, 7:39 AM MDT | Flash Flood Watch | RIW | 43 hr |
| May 10, 1:56 PM MDT | Freeze Warning | RIW | 19 hr |
| May 24, 3:12 PM MDT | Special Weather Statement | RIW | 48 min |
| May 24, 3:59 PM MDT | Special Weather Statement | RIW | 46 min |
| May 25, 12:56 PM MDT | Special Weather Statement | RIW | 34 min |
| Jun 5, 4:16 PM MDT | Special Weather Statement | RIW | 44 min |
| Jun 5, 4:59 PM MDT | Special Weather Statement | RIW | 46 min |
| Jun 5, 6:14 PM MDT | Special Weather Statement | RIW | 61 min |
| Jun 7, 11:12 PM MDT | Areal Flood Advisory | RIW | 12 hr |
| Jun 8, 6:08 AM MDT | Areal Flood Advisory | RIW | 12 hr |
| Jun 11, 2:59 PM MDT | Special Weather Statement | RIW | 46 min |
| Jun 12, 2:20 PM MDT | Severe Thunderstorm Warning | RIW | 40 min |
| Jun 12, 2:32 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jun 12, 2:47 PM MDT | Special Weather Statement | RIW | 43 min |
| Jun 12, 2:53 PM MDT | Severe Thunderstorm Warning | RIW | 52 min |
| Jun 12, 3:37 PM MDT | Severe Thunderstorm Warning | RIW | 8 min |
| Jun 12, 3:46 PM MDT | Special Weather Statement | RIW | 44 min |
| Jun 13, 7:44 AM MDT | Special Weather Statement | RIW | 46 min |
| Jun 28, 3:39 PM MDT | Special Weather Statement | RIW | 36 min |
| Jul 11, 1:32 PM MDT | Freeze Warning | RIW | 19 hr |
| Jul 19, 2:23 PM MDT | Special Weather Statement | RIW | 22 min |
| Jul 19, 6:39 PM MDT | Special Weather Statement | RIW | 36 min |
| Jul 19, 7:17 PM MDT | Special Weather Statement | RIW | 43 min |
| Jul 22, 2:13 PM MDT | Special Weather Statement | RIW | 47 min |
| Jul 29, 10:49 AM MDT | Fire Weather Watch | RIW | 15 hr |
| Jul 30, 1:55 AM MDT | Red Flag Warning | RIW | 18 hr |
| Jul 31, 2:28 PM MDT | Special Weather Statement | RIW | 32 min |
| Jul 31, 3:06 PM MDT | Special Weather Statement | RIW | 24 min |
| Aug 2, 9:09 AM MDT | Red Flag Warning | RIW | 12 hr |
| Aug 2, 9:09 AM MDT | Red Flag Warning | RIW | 36 hr |
| Aug 3, 10:22 AM MDT | High Wind Warning | RIW | 5 hr |
| Aug 6, 10:58 PM MDT | Fire Weather Watch | RIW | 22 hr |
| Aug 7, 2:07 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 2:14 PM MDT | Special Weather Statement | RIW | 31 min |
| Aug 7, 8:52 PM MDT | Red Flag Warning | RIW | 23 hr |
| Aug 7, 9:28 PM MDT | Fire Weather Watch | RIW | 24 hr |
| Aug 8, 9:34 PM MDT | Red Flag Warning | RIW | 23 hr |
| Aug 9, 9:23 PM MDT | Red Flag Warning | RIW | 23 hr |
| Aug 13, 12:33 PM MDT | Fire Weather Watch | RIW | 13 hr |
| Aug 14, 3:10 AM MDT | Red Flag Warning | RIW | 17 hr |
| Aug 21, 2:01 PM MDT | Red Flag Warning | RIW | 31 hr |
| Aug 22, 11:19 AM MDT | Red Flag Warning | RIW | 34 hr |
| Aug 26, 1:29 PM MDT | Fire Weather Watch | RIW | 12 hr |
| Aug 26, 4:39 PM MDT | Special Weather Statement | RIW | 36 min |
| Aug 27, 1:58 AM MDT | Red Flag Warning | RIW | 41 hr |
| Aug 31, 8:32 PM MDT | Fire Weather Watch | RIW | 23 hr |
| Aug 31, 8:32 PM MDT | Red Flag Warning | RIW | 48 hr |
| Sep 4, 12:46 PM MDT | Special Weather Statement | RIW | 44 min |
| Sep 4, 1:55 PM MDT | Severe Thunderstorm Warning | RIW | 50 min |
| Sep 4, 2:36 PM MDT | Severe Thunderstorm Warning | RIW | 24 min |
| Sep 4, 7:48 PM MDT | Special Weather Statement | RIW | 42 min |
| Sep 4, 9:05 PM MDT | Special Weather Statement | RIW | 40 min |
| Sep 5, 2:49 AM MDT | Freeze Watch | RIW | 12 hr |
| Sep 5, 3:03 PM MDT | Freeze Warning | RIW | 18 hr |
| Sep 6, 2:30 AM MDT | Fire Weather Watch | RIW | 24 hr |
| Sep 7, 2:44 AM MDT | Red Flag Warning | RIW | 41 hr |
| Sep 9, 12:07 PM MDT | Fire Weather Watch | RIW | 15 hr |
| Sep 10, 3:02 AM MDT | Red Flag Warning | RIW | 42 hr |
| Sep 14, 3:51 PM MDT | Special Weather Statement | RIW | 24 min |
| Sep 14, 5:34 PM MDT | Special Weather Statement | RIW | 41 min |
| Sep 14, 6:11 PM MDT | Special Weather Statement | RIW | 49 min |
| Sep 18, 12:16 PM MDT | Fire Weather Watch | RIW | 14 hr |
| Sep 19, 2:23 AM MDT | Red Flag Warning | RIW | 18 hr |
| Sep 19, 2:47 PM MDT | Fire Weather Watch | RIW | 11 hr |
| Sep 20, 1:46 AM MDT | Red Flag Warning | RIW | 18 hr |
| Oct 2, 11:49 AM MDT | High Wind Watch | RIW | 15 hr |
| Oct 3, 2:01 AM MDT | Special Weather Statement | RIW | 29 min |
| Oct 3, 2:29 AM MDT | Special Weather Statement | RIW | 31 min |
| Oct 3, 2:42 AM MDT | High Wind Warning | RIW | 21 hr |
| Oct 4, 1:29 PM MDT | Freeze Warning | RIW | 20 hr |
| Oct 13, 12:22 PM MDT | High Wind Warning | RIW | 41 hr |
| Oct 15, 1:22 AM MDT | High Wind Watch | RIW | 12 hr |
| Oct 15, 1:12 PM MDT | High Wind Warning | RIW | 23 hr |
| Oct 15, 10:36 PM MDT | Winter Weather Advisory | RIW | 38 hr |
| Oct 16, 12:31 PM MDT | High Wind Watch | RIW | 9 hr |
| Oct 16, 9:15 PM MDT | High Wind Warning | RIW | 21 hr |
| Oct 29, 1:18 PM MDT | High Wind Watch | RIW | 22 hr |
| Oct 30, 1:54 AM MDT | High Wind Warning | RIW | 45 hr |
| Nov 15, 9:45 PM MST | Winter Weather Advisory | RIW | 47 hr |
| Nov 23, 1:20 AM MST | Winter Weather Advisory | RIW | 25 hr |
| Dec 3, 11:53 AM MST | Winter Weather Advisory | RIW | 54 hr |
| Dec 8, 5:26 AM MST | Winter Weather Advisory | RIW | 58 hr |
| Dec 8, 12:48 PM MST | High Wind Watch | RIW | 22 hr |
| Dec 9, 10:31 AM MST | High Wind Warning | RIW | 29 hr |
| Dec 13, 3:08 AM MST | Winter Storm Watch | RIW | 57 hr |
| Dec 13, 2:50 PM MST | High Wind Watch | RIW | 23 hr |
| Dec 14, 3:32 AM MST | Winter Weather Advisory | RIW | 70 hr |
| Dec 14, 2:10 PM MST | High Wind Warning | RIW | 33 hr |
| Dec 17, 12:58 PM MST | Wind Chill Warning | RIW | 20 hr |
| Dec 18, 1:54 PM MST | High Wind Warning | RIW | 62 hr |
| Dec 18, 7:10 PM MST | High Wind Watch | RIW | 7 hr |
| Dec 23, 8:24 PM MST | High Wind Warning | RIW | 9 hr |
| Dec 24, 1:51 AM MST | Winter Weather Advisory | RIW | 45 hr |
| Dec 26, 2:33 AM MST | High Wind Watch | RIW | 6 hr |
| Dec 26, 2:33 AM MST | High Wind Warning | RIW | 47 hr |
| Dec 29, 1:26 AM MST | High Wind Warning | RIW | 34 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 | 5 |
| Mesoscale Discussion | 3 |
| Special Weather Statement | 33 |
| Flooding | |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 18 |
| Cold | |
| Freeze Warning | 4 |
| Wind Chill Warning | 1 |
| Freeze Watch | 1 |
| Wind and dust | |
| High Wind Warning | 18 |
| High Wind Watch | 12 |
| Fire | |
| Red Flag Warning | 15 |
| Fire Weather Watch | 10 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20152017
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.