Alert archive / Wyoming / 2009
Weather alerts in Wyoming, September 2009
73 weather alerts in September 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in September 2009. Tap one for its archive.
- Alerts
- 73
- Warnings
- 21
- Watches
- 13
- Advisories
- 9
- Busiest day
- September 20, 200913 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 1:49 PM MDT | Red Flag Warning | RIW | Fremont, Natrona | 4 hr |
| Sep 2, 3:23 PM MDT | Special Weather Statement | RIW | Natrona | 67 min |
| Sep 4, 3:37 PM MDT | Fire Weather Watch | BYZ | Big Horn, Johnson, Sheridan, Washakie | 37 hr |
| Sep 5, 4:42 AM MDT | Fire Weather Watch | UNR | 24 hr | |
| Sep 5, 4:14 PM MDT | Special Weather Statement | RIW | Teton | 46 min |
| Sep 6, 4:46 AM MDT | Red Flag Warning | BYZ | Big Horn, Johnson, Sheridan, Washakie | 16 hr |
| Sep 6, 4:49 AM MDT | Red Flag Warning | UNR | 16 hr | |
| Sep 6, 3:26 PM MDT | Special Weather Statement | RIW | Teton | 49 min |
| Sep 7, 6:41 PM MDT | Special Weather Statement | RIW | Natrona | 49 min |
| Sep 7, 8:45 PM MDT | Special Weather Statement | RIW | Johnson | 60 min |
| Sep 7, 9:39 PM MDT | Special Weather Statement | RIW | Johnson | 51 min |
| Sep 8, 3:20 AM MDT | Freeze Watch | RIW | Lincoln | 11 hr |
| Sep 8, 2:33 PM MDT | Freeze Warning | RIW | Lincoln | 18 hr |
| Sep 10, 4:12 AM MDT | Red Flag Warning | BYZ | Sheridan | 17 hr |
| Sep 13, 1:19 AM MDT | Dense Fog Advisory | CYS | 5 hr | |
| Sep 14, 1:23 PM MDT | Special Weather Statement | RIW | Lincoln | 37 min |
| Sep 14, 2:58 PM MDT | Special Weather Statement | RIW | Lincoln | 62 min |
| Sep 14, 6:14 PM MDT | Special Weather Statement | RIW | Teton | 61 min |
| Sep 14, 6:37 PM MDT | Special Weather Statement | RIW | 53 min | |
| Sep 15, 2:14 PM MDT | Special Weather Statement | RIW | 61 min | |
| Sep 15, 3:27 PM MDT | Special Weather Statement | RIW | Johnson | 63 min |
| Sep 15, 4:15 PM MDT | Special Weather Statement | RIW | Johnson | 60 min |
| Sep 15, 5:34 PM MDT | Special Weather Statement | RIW | Sheridan | 41 min |
| Sep 15, 6:05 PM MDT | Special Weather Statement | RIW | Natrona | 55 min |
| Sep 16, 1:59 PM MDT | Special Weather Statement | RIW | Washakie | 46 min |
| Sep 16, 3:40 PM MDT | Special Weather Statement | RIW | Fremont | 50 min |
| Sep 19, 5:57 PM MDT | Special Weather Statement | RIW | Lincoln | 63 min |
| Sep 19, 8:23 PM MDT | Special Weather Statement | RIW | 52 min | |
| Sep 20, 1:51 PM MDT | Special Weather Statement | RIW | 39 min | |
| Sep 20, 2:21 PM MDT | Special Weather Statement | RIW | Hot Springs | 39 min |
| Sep 20, 2:33 PM MDT | Special Weather Statement | RIW | 42 min | |
| Sep 20, 2:39 PM MDT | Freeze Warning | RIW | Fremont | 18 hr |
| Sep 20, 2:39 PM MDT | High Wind Warning | RIW | Big Horn, Johnson, Park | 12 hr |
| Sep 20, 2:41 PM MDT | Winter Weather Advisory | RIW | Natrona | 18 hr |
| Sep 20, 2:56 PM MDT | Special Weather Statement | RIW | Fremont | 49 min |
| Sep 20, 3:19 PM MDT | Special Weather Statement | RIW | Hot Springs | 41 min |
| Sep 20, 3:35 PM MDT | Special Weather Statement | RIW | Fremont | 40 min |
| Sep 20, 4:38 PM MDT | Special Weather Statement | RIW | Natrona | 37 min |
| Sep 20, 5:02 PM MDT | Special Weather Statement | RIW | Natrona | 43 min |
| Sep 20, 5:14 PM MDT | Special Weather Statement | RIW | Natrona | 46 min |
| Sep 20, 6:29 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 46 min |
| Sep 20, 9:40 PM MDT | Freeze Watch | RIW | Big Horn, Fremont, Hot Springs, Johnson, Natrona, Park and 2 more | 17 hr |
| Sep 21, 2:53 PM MDT | Freeze Warning | RIW | Big Horn, Fremont, Hot Springs, Johnson, Natrona, Park and 2 more | 18 hr |
| Sep 21, 6:29 PM MDT | Frost Advisory | CYS | Weston | 10 hr |
| Sep 21, 6:29 PM MDT | Freeze Warning | CYS | 15 hr | |
| Sep 21, 8:05 PM MDT | Frost Advisory | UNR | Campbell, Crook, Weston | 7 hr |
| Sep 25, 3:09 AM MDT | Fire Weather Watch | CYS | 20 hr | |
| Sep 25, 2:31 PM MDT | Fire Weather Watch | RIW | Fremont, Hot Springs, Lincoln, Park, Sublette, Sweetwater and 1 more | 10 hr |
| Sep 25, 10:51 PM MDT | Red Flag Warning | CYS | 20 hr | |
| Sep 26, 12:20 AM MDT | Red Flag Warning | RIW | Fremont, Hot Springs, Lincoln, Park, Sublette, Sweetwater and 2 more | 21 hr |
| Sep 27, 2:40 AM MDT | Red Flag Warning | RIW | Lincoln, Sublette, Sweetwater, Uinta | 18 hr |
| Sep 27, 3:13 AM MDT | Freeze Watch | CYS | Crook, Weston | 12 hr |
| Sep 27, 1:57 PM MDT | Freeze Warning | RIW | Big Horn, Hot Springs, Johnson, Natrona, Park, Washakie | 20 hr |
| Sep 27, 2:34 PM MDT | Frost Advisory | UNR | Campbell, Crook, Weston | 17 hr |
| Sep 27, 2:45 PM MDT | Freeze Warning | CYS | Crook, Weston | 17 hr |
| Sep 28, 2:23 AM MDT | Fire Weather Watch | CYS | 27 hr | |
| Sep 28, 2:18 PM MDT | Red Flag Warning | BYZ | Big Horn, Johnson, Sheridan, Washakie | 31 hr |
| Sep 28, 2:46 PM MDT | Fire Weather Watch | RIW | Fremont, Lincoln, Natrona, Sublette, Sweetwater, Uinta | 12 hr |
| Sep 29, 2:46 AM MDT | Red Flag Warning | RIW | Fremont, Hot Springs, Johnson, Lincoln, Natrona, Park and 3 more | 18 hr |
| Sep 29, 4:02 AM MDT | Red Flag Warning | UNR | 16 hr | |
| Sep 29, 5:10 AM MDT | Red Flag Warning | CYS | 15 hr | |
| Sep 29, 9:23 PM MDT | High Wind Warning | RIW | Fremont | 13 hr |
| Sep 30, 2:57 AM MDT | Winter Storm Watch | RIW | Big Horn, Fremont, Johnson, Natrona, Washakie | 9 hr |
| Sep 30, 2:57 AM MDT | Winter Weather Advisory | RIW | Big Horn, Fremont, Hot Springs, Johnson, Lincoln, Natrona and 4 more | 29 hr |
| Sep 30, 3:26 AM MDT | Winter Storm Watch | UNR | Crook, Weston | 12 hr |
| Sep 30, 4:05 AM MDT | Winter Storm Watch | BYZ | 11 hr | |
| Sep 30, 5:18 AM MDT | High Wind Watch | CYS | Crook, Weston | 22 hr |
| Sep 30, 1:10 PM MDT | Special Weather Statement | RIW | Fremont | 35 min |
| Sep 30, 1:35 PM MDT | Special Weather Statement | RIW | Fremont | 40 min |
| Sep 30, 1:53 PM MDT | Winter Weather Advisory | CYS | 23 hr | |
| Sep 30, 2:50 PM MDT | Winter Weather Advisory | BYZ | 18 hr | |
| Sep 30, 3:04 PM MDT | Winter Storm Warning | UNR | Crook, Weston | 12 hr |
| Sep 30, 3:04 PM MDT | Winter Weather Advisory | UNR | Crook, Weston | 24 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 | 1 |
| Special Weather Statement | 30 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 5 |
| Cold | |
| Freeze Warning | 6 |
| Freeze Watch | 3 |
| Frost Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Fire | |
| Red Flag Warning | 11 |
| Fire Weather Watch | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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. Rebuilt daily.