Alert archive / Wyoming / Park County
Weather alerts in Park County, Wyoming, 2009
104 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Park County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 104
- Warnings
- 30
- Watches
- 24
- Advisories
- 21
- Busiest month
- July18 alerts
- Busiest day
- July 6, 20097 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Park County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 6 | 4 | 33% | 3 | 100% | 18 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Riverton, WY: tornado warnings | 5 | 0 | 100% | 2 | 0% | |
| NWS Riverton, WY: severe thunderstorm warnings | 77 | 23 | 70% | 63 | 56% | 22 min |
| NWS Riverton, WY: flash flood warnings | 6 | 3 | 50% | 6 | 67% | 47 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 1, 3:07 AM MST | High Wind Watch | RIW | 12 hr |
| Jan 1, 3:13 PM MST | High Wind Warning | RIW | 27 hr |
| Jan 4, 1:59 AM MST | High Wind Watch | RIW | 24 hr |
| Jan 4, 3:49 PM MST | High Wind Warning | RIW | 25 hr |
| Jan 6, 1:30 AM MST | High Wind Watch | RIW | 20 hr |
| Jan 6, 1:31 AM MST | Winter Weather Advisory | RIW | 40 hr |
| Jan 6, 3:50 PM MST | Winter Storm Warning | RIW | 24 hr |
| Jan 6, 9:32 PM MST | High Wind Warning | RIW | 24 hr |
| Jan 12, 2:46 PM MST | High Wind Watch | RIW | 4 hr |
| Jan 12, 6:56 PM MST | High Wind Warning | RIW | 22 hr |
| Jan 23, 2:08 PM MST | Winter Storm Watch | RIW | 13 hr |
| Jan 24, 3:14 AM MST | Winter Weather Advisory | RIW | 23 hr |
| Jan 25, 9:15 AM MST | Winter Weather Advisory | RIW | 20 hr |
| Jan 26, 2:43 PM MST | High Wind Watch | RIW | 25 hr |
| Jan 27, 1:43 AM MST | Winter Weather Advisory | RIW | 36 hr |
| Jan 27, 3:35 PM MST | High Wind Warning | RIW | 16 hr |
| Feb 23, 1:10 AM MST | Winter Weather Advisory | RIW | 35 hr |
| Feb 26, 2:18 AM MST | Winter Weather Advisory | RIW | 27 hr |
| Mar 4, 8:08 AM MST | Winter Storm Warning | RIW | 16 hr |
| Mar 14, 3:00 PM MDT | Winter Storm Watch | RIW | 25 hr |
| Mar 15, 3:46 PM MDT | Winter Storm Warning | RIW | 35 hr |
| Mar 21, 3:07 PM MDT | Winter Storm Watch | RIW | 24 hr |
| Mar 22, 3:12 PM MDT | Winter Storm Warning | RIW | 33 hr |
| Mar 22, 3:12 PM MDT | Winter Weather Advisory | RIW | 23 hr |
| Mar 24, 3:30 AM MDT | Winter Storm Watch | RIW | 35 hr |
| Mar 25, 3:29 AM MDT | Winter Storm Warning | RIW | 39 hr |
| Mar 28, 2:53 AM MDT | Winter Storm Watch | RIW | 34 hr |
| Mar 28, 11:44 AM MDT | Winter Weather Advisory | RIW | 33 hr |
| Mar 28, 9:41 PM MDT | Winter Storm Warning | RIW | 41 hr |
| Mar 31, 12:27 AM MDT | Winter Weather Advisory | RIW | 42 hr |
| Apr 2, 12:41 AM MDT | Winter Storm Watch | RIW | 25 hr |
| Apr 2, 12:41 AM MDT | Winter Weather Advisory | RIW | 65 hr |
| Apr 2, 1:08 PM MDT | Winter Storm Warning | RIW | 53 hr |
| Apr 8, 11:09 AM MDT | Winter Storm Watch | RIW | 3 hr |
| Apr 8, 2:30 PM MDT | Winter Storm Warning | RIW | 20 hr |
| Apr 8, 2:30 PM MDT | Winter Weather Advisory | RIW | 20 hr |
| Apr 13, 1:36 AM MDT | Winter Storm Watch | RIW | 23 hr |
| Apr 14, 12:25 AM MDT | Winter Weather Advisory | RIW | 21 hr |
| Apr 23, 8:54 PM MDT | Winter Weather Advisory | RIW | 18 hr |
| Apr 25, 3:13 PM MDT | Winter Weather Advisory | RIW | 39 hr |
| Apr 27, 2:13 PM MDT | Winter Weather Advisory | RIW | 37 hr |
| Jun 5, 5:20 PM MDT | Severe Thunderstorm Warning | RIW | 40 min |
| Jun 6, 2:30 PM MDT | Winter Weather Advisory | RIW | 25 hr |
| Jun 7, 3:40 PM MDT | Freeze Warning | RIW | 17 hr |
| Jun 30, 2:35 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Jul 3, 12:55 PM MDT | Special Weather Statement | RIW | 65 min |
| Jul 6, 1:02 PM MDT | Special Weather Statement | RIW | 43 min |
| Jul 6, 1:05 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Jul 6, 1:33 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 6, 4:02 PM MDT | Mesoscale Discussion | SPC | 58 min |
| Jul 6, 4:13 PM MDT | Special Weather Statement | RIW | 47 min |
| Jul 6, 4:17 PM MDT | Areal Flood Advisory | RIW | 57 min |
| Jul 6, 5:10 PM MDT | Special Weather Statement | RIW | 50 min |
| Jul 6, 6:51 PM MDT | Special Weather Statement | RIW | 39 min |
| Jul 12, 4:33 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 5:49 PM MDT | Special Weather Statement | RIW | 71 min |
| Jul 13, 2:48 AM MDT | Special Weather Statement | RIW | 42 min |
| Jul 13, 3:24 AM MDT | Special Weather Statement | RIW | 81 min |
| Jul 13, 1:18 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jul 13, 2:57 PM MDT | Severe Thunderstorm Warning | RIW | 35 min |
| Jul 19, 12:40 PM MDT | Special Weather Statement | RIW | 50 min |
| Jul 26, 4:14 PM MDT | Special Weather Statement | RIW | 61 min |
| Jul 27, 1:10 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 3, 12:46 PM MDT | Special Weather Statement | RIW | 44 min |
| Aug 3, 1:29 PM MDT | Severe Thunderstorm Warning | RIW | 61 min |
| Aug 6, 2:16 PM MDT | Mesoscale Discussion | SPC | 59 min |
| Aug 6, 2:58 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 6, 5:11 PM MDT | Special Weather Statement | RIW | 34 min |
| Aug 6, 5:25 PM MDT | Severe Thunderstorm Warning | RIW | 50 min |
| Aug 6, 6:28 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Aug 7, 3:27 PM MDT | Special Weather Statement | RIW | 48 min |
| Aug 7, 4:02 PM MDT | Severe Thunderstorm Warning | RIW | 58 min |
| Aug 7, 4:18 PM MDT | Severe Thunderstorm Warning | RIW | 57 min |
| Aug 14, 1:03 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Aug 15, 8:48 PM MDT | Special Weather Statement | RIW | 42 min |
| Aug 22, 1:31 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Aug 22, 3:04 PM MDT | Special Weather Statement | RIW | 56 min |
| Aug 31, 2:26 PM MDT | Special Weather Statement | RIW | 49 min |
| Aug 31, 5:33 PM MDT | Special Weather Statement | RIW | 42 min |
| Sep 20, 2:39 PM MDT | High Wind Warning | RIW | 12 hr |
| Sep 20, 9:40 PM MDT | Freeze Watch | RIW | 17 hr |
| Sep 21, 2:53 PM MDT | Freeze Warning | RIW | 18 hr |
| Sep 25, 2:31 PM MDT | Fire Weather Watch | RIW | 10 hr |
| Sep 26, 12:20 AM MDT | Red Flag Warning | RIW | 21 hr |
| Sep 27, 1:57 PM MDT | Freeze Warning | RIW | 20 hr |
| Sep 29, 2:46 AM MDT | Red Flag Warning | RIW | 18 hr |
| Sep 30, 2:57 AM MDT | Winter Weather Advisory | RIW | 29 hr |
| Oct 1, 2:33 AM MDT | Freeze Watch | RIW | 13 hr |
| Oct 1, 3:36 PM MDT | Freeze Warning | RIW | 17 hr |
| Oct 3, 2:01 AM MDT | Winter Storm Watch | RIW | 29 hr |
| Oct 4, 3:55 AM MDT | Winter Storm Warning | RIW | 32 hr |
| Oct 4, 3:55 AM MDT | Winter Weather Advisory | RIW | 38 hr |
| Oct 4, 9:25 AM MDT | Mesoscale Discussion | SPC | 5 hr |
| Oct 4, 6:31 PM MDT | Mesoscale Discussion | SPC | 6 hr |
| Oct 8, 2:37 PM MDT | Winter Weather Advisory | RIW | 33 hr |
| Oct 25, 2:10 PM MDT | High Wind Watch | RIW | 34 hr |
| Oct 30, 3:17 AM MDT | High Wind Watch | RIW | 12 hr |
| Oct 30, 2:48 PM MDT | High Wind Warning | RIW | 21 hr |
| Nov 5, 2:03 PM MST | High Wind Watch | RIW | 6 hr |
| Nov 11, 2:19 AM MST | Winter Weather Advisory | RIW | 33 hr |
| Dec 11, 1:38 PM MST | Winter Storm Watch | RIW | 20 hr |
| Dec 12, 10:07 AM MST | Winter Storm Warning | RIW | 40 hr |
| Dec 14, 3:16 PM MST | High Wind Watch | RIW | 11 hr |
| Dec 15, 1:58 AM MST | High Wind Warning | RIW | 21 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 | 6 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 12 |
| Special Weather Statement | 17 |
| Flooding | |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 10 |
| Winter Storm Watch | 10 |
| Winter Weather Advisory | 20 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 2 |
| Wind and dust | |
| High Wind Warning | 8 |
| High Wind Watch | 9 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe 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. Warning verification from the Mesonet's Cow. Rebuilt daily.