Alert archive / Wyoming / Teton County
Weather alerts in Teton County, Wyoming, 2023
67 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Teton County and its neighbors
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Alerts
- 67
- Warnings
- 16
- Watches
- 11
- Advisories
- 28
- Busiest month
- March16 alerts
- Busiest day
- March 31, 20233 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Teton County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 3 | 1 | 67% | 4 | 25% | 7 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Riverton, WY: tornado warnings | 13 | 4 | 69% | 6 | 83% | 19 min |
| NWS Riverton, WY: severe thunderstorm warnings | 122 | 34 | 72% | 98 | 59% | 18 min |
| NWS Riverton, WY: flash flood warnings | 7 | 3 | 57% | 5 | 80% | 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 9, 2:33 AM MST | Winter Weather Advisory | RIW | 32 hr |
| Jan 14, 1:29 PM MST | Winter Weather Advisory | RIW | 43 hr |
| Jan 25, 1:07 PM MST | Winter Storm Watch | RIW | 24 hr |
| Jan 26, 1:14 PM MST | Winter Storm Warning | RIW | 3 days |
| Jan 28, 9:57 PM MST | Wind Chill Warning | RIW | 35 hr |
| Jan 28, 9:57 PM MST | Wind Chill Advisory | RIW | 35 hr |
| Feb 4, 1:02 PM MST | Winter Weather Advisory | RIW | 47 hr |
| Feb 7, 2:03 AM MST | Winter Weather Advisory | RIW | 38 hr |
| Feb 13, 2:37 AM MST | Winter Weather Advisory | RIW | 50 hr |
| Feb 17, 3:20 PM MST | Winter Weather Advisory | RIW | 37 hr |
| Feb 19, 8:43 AM MST | Winter Storm Warning | RIW | 3 days |
| Feb 26, 4:32 AM MST | Winter Storm Warning | RIW | 54 hr |
| Feb 26, 1:14 PM MST | Winter Weather Advisory | RIW | 46 hr |
| Mar 2, 1:10 PM MST | Winter Weather Advisory | RIW | 28 hr |
| Mar 4, 1:11 AM MST | Winter Weather Advisory | RIW | 38 hr |
| Mar 8, 12:49 PM MST | Winter Storm Watch | RIW | 14 hr |
| Mar 9, 2:41 AM MST | Winter Storm Warning | RIW | 50 hr |
| Mar 12, 1:34 PM MDT | Winter Storm Watch | RIW | 24 hr |
| Mar 13, 1:05 PM MDT | Winter Storm Warning | RIW | 62 hr |
| Mar 13, 1:05 PM MDT | Winter Weather Advisory | RIW | 49 hr |
| Mar 20, 1:27 AM MDT | Winter Weather Advisory | RIW | 35 hr |
| Mar 21, 1:09 PM MDT | Winter Weather Advisory | RIW | 41 hr |
| Mar 23, 3:44 PM MDT | Winter Storm Watch | RIW | 11 hr |
| Mar 24, 2:58 AM MDT | Winter Storm Warning | RIW | 3 days |
| Mar 24, 2:58 AM MDT | Winter Weather Advisory | RIW | 3 days |
| Mar 28, 1:53 PM MDT | Winter Weather Advisory | RIW | 57 hr |
| Mar 31, 2:21 AM MDT | Winter Storm Watch | RIW | 14 hr |
| Mar 31, 3:55 PM MDT | Winter Storm Warning | RIW | 38 hr |
| Mar 31, 3:55 PM MDT | Winter Weather Advisory | RIW | 38 hr |
| Apr 12, 2:15 AM MDT | Winter Weather Advisory | RIW | 40 hr |
| Apr 17, 3:15 AM MDT | Winter Weather Advisory | RIW | 46 hr |
| Apr 20, 12:27 PM MDT | Winter Weather Advisory | RIW | 34 hr |
| Apr 24, 3:43 AM MDT | Winter Weather Advisory | RIW | 22 hr |
| May 8, 6:40 PM MDT | Special Weather Statement | RIW | 35 min |
| May 18, 11:42 AM MDT | River Flood Advisory | RIW | 16 days |
| May 22, 1:33 PM MDT | Special Weather Statement | RIW | 27 min |
| May 23, 3:53 PM MDT | River Flood Advisory | RIW | 5 days |
| May 24, 1:03 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 5:58 PM MDT | Severe Thunderstorm Warning | RIW | 32 min |
| Jul 3, 1:43 PM MDT | Special Weather Statement | RIW | 47 min |
| Jul 3, 5:36 PM MDT | Special Weather Statement | RIW | 39 min |
| Jul 24, 3:33 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jul 24, 9:54 PM MDT | Special Weather Statement | RIW | 36 min |
| Jul 24, 10:32 PM MDT | Special Weather Statement | RIW | 43 min |
| Jul 24, 10:36 PM MDT | Severe Thunderstorm Warning | RIW | 39 min |
| Aug 2, 1:53 PM MDT | Flood Watch | RIW | 3 days |
| Aug 6, 1:44 PM MDT | Special Weather Statement | RIW | 16 min |
| Aug 26, 2:29 PM MDT | Severe Thunderstorm Warning | RIW | 31 min |
| Aug 26, 2:30 PM MDT | Special Weather Statement | RIW | 30 min |
| Aug 27, 11:10 AM MDT | Special Weather Statement | RIW | 35 min |
| Sep 3, 1:54 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 3, 3:54 PM MDT | Special Weather Statement | RIW | 36 min |
| Sep 21, 2:53 AM MDT | Freeze Watch | RIW | 31 hr |
| Sep 22, 10:03 AM MDT | Freeze Warning | RIW | 24 hr |
| Sep 23, 1:31 PM MDT | Freeze Warning | RIW | 19 hr |
| Oct 2, 2:29 PM MDT | Winter Weather Advisory | RIW | 28 hr |
| Oct 10, 3:48 PM MDT | Winter Weather Advisory | RIW | 55 hr |
| Oct 23, 2:37 AM MDT | Winter Storm Watch | RIW | 23 hr |
| Oct 24, 1:48 AM MDT | Winter Storm Warning | RIW | 64 hr |
| Nov 2, 10:27 AM MDT | Winter Weather Advisory | RIW | 26 hr |
| Nov 21, 1:16 AM MST | Winter Storm Watch | RIW | 37 hr |
| Nov 22, 1:35 AM MST | Winter Weather Advisory | RIW | 57 hr |
| Nov 30, 1:44 PM MST | Winter Storm Watch | RIW | 40 hr |
| Dec 1, 2:09 PM MST | Winter Storm Warning | RIW | 63 hr |
| Dec 6, 12:46 PM MST | Winter Storm Warning | RIW | 52 hr |
| Dec 6, 12:46 PM MST | Winter Weather Advisory | RIW | 52 hr |
| Dec 9, 3:08 PM MST | Winter Weather Advisory | RIW | 35 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 archive20222024
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.