Alert archive / Wyoming / Natrona County
Weather alerts in Natrona County, Wyoming, 2010
152 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Natrona County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 152
- Warnings
- 53
- Watches
- 39
- Advisories
- 24
- Busiest month
- August20 alerts
- Busiest day
- June 22, 20108 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 2 tornado warnings covering Natrona County in 2010 had a tornado report inside them.
Natrona County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 8 | 2 | 75% | 3 | 33% | 23 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Riverton, WY: tornado warnings | 4 | 1 | 75% | 1 | 100% | 1 min |
| NWS Riverton, WY: severe thunderstorm warnings | 42 | 8 | 81% | 34 | 32% | 20 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, 3:09 PM MST | Winter Storm Watch | RIW | 36 hr |
| Jan 4, 3:09 PM MST | Winter Storm Warning | RIW | 46 hr |
| Jan 4, 3:09 PM MST | Winter Weather Advisory | RIW | 50 hr |
| Jan 22, 11:49 AM MST | Winter Weather Advisory | RIW | 47 hr |
| Feb 6, 5:20 PM MST | Special Weather Statement | RIW | 40 min |
| Feb 11, 10:34 AM MST | Winter Weather Advisory | RIW | 63 hr |
| Feb 17, 2:34 PM MST | Winter Weather Advisory | RIW | 22 hr |
| Feb 19, 3:27 PM MST | Winter Weather Advisory | RIW | 42 hr |
| Mar 4, 2:58 AM MST | Winter Storm Watch | RIW | 14 hr |
| Mar 4, 4:50 PM MST | Winter Weather Advisory | RIW | 31 hr |
| Mar 5, 3:48 AM MST | Winter Storm Warning | RIW | 11 hr |
| Mar 7, 2:34 AM MST | Dense Fog Advisory | RIW | 7 hr |
| Mar 17, 2:04 PM MDT | Winter Storm Watch | RIW | 22 hr |
| Mar 18, 11:55 AM MDT | Winter Weather Advisory | RIW | 33 hr |
| Mar 21, 9:14 PM MDT | Winter Weather Advisory | RIW | 45 hr |
| Mar 23, 9:29 AM MDT | Winter Storm Warning | RIW | 12 hr |
| Mar 28, 9:18 PM MDT | High Wind Watch | RIW | 6 hr |
| Mar 28, 9:18 PM MDT | High Wind Warning | RIW | 47 hr |
| Mar 30, 3:01 PM MDT | Winter Storm Watch | RIW | 24 hr |
| Mar 31, 2:51 PM MDT | Winter Storm Warning | RIW | 39 hr |
| Mar 31, 2:51 PM MDT | Winter Weather Advisory | RIW | 42 hr |
| Apr 2, 11:16 AM MDT | High Wind Watch | RIW | 15 hr |
| Apr 2, 2:53 PM MDT | High Wind Warning | RIW | 27 hr |
| Apr 5, 11:39 AM MDT | Winter Storm Warning | RIW | 39 hr |
| Apr 5, 11:39 AM MDT | Winter Weather Advisory | RIW | 36 hr |
| Apr 12, 11:52 AM MDT | High Wind Watch | RIW | 77 min |
| Apr 12, 1:09 PM MDT | High Wind Watch | RIW | 11 hr |
| Apr 13, 12:18 AM MDT | High Wind Warning | RIW | 18 hr |
| Apr 20, 4:30 PM MDT | Special Weather Statement | RIW | 30 min |
| Apr 20, 5:22 PM MDT | Special Weather Statement | RIW | 23 min |
| Apr 20, 5:24 PM MDT | Special Weather Statement | RIW | 21 min |
| Apr 20, 5:38 PM MDT | Special Weather Statement | RIW | 22 min |
| Apr 23, 2:43 AM MDT | Winter Weather Advisory | RIW | 17 hr |
| Apr 27, 2:37 PM MDT | High Wind Watch | RIW | 5 hr |
| Apr 27, 8:00 PM MDT | High Wind Warning | RIW | 10 hr |
| Apr 29, 2:57 AM MDT | Winter Storm Watch | RIW | 11 hr |
| Apr 29, 1:32 PM MDT | Winter Weather Advisory | RIW | 25 hr |
| May 2, 2:40 PM MDT | High Wind Watch | RIW | 38 hr |
| May 3, 3:23 AM MDT | High Wind Warning | RIW | 40 hr |
| May 5, 1:21 PM MDT | Winter Weather Advisory | RIW | 29 hr |
| May 10, 2:43 AM MDT | Winter Storm Watch | RIW | 24 hr |
| May 10, 3:50 PM MDT | Winter Storm Warning | RIW | 47 hr |
| May 10, 9:33 PM MDT | Winter Weather Advisory | RIW | 41 hr |
| May 18, 4:53 PM MDT | Special Weather Statement | RIW | 37 min |
| May 19, 9:02 AM MDT | Flood Watch | RIW | 21 hr |
| May 20, 1:36 PM MDT | Flood Watch | RIW | 34 hr |
| May 21, 3:04 PM MDT | Special Weather Statement | RIW | 56 min |
| May 24, 3:17 AM MDT | Winter Weather Advisory | RIW | 23 hr |
| May 26, 1:49 PM MDT | Tornado Watch | SPC | 7 hr |
| May 26, 2:14 PM MDT | Special Weather Statement | RIW | 46 min |
| May 26, 4:45 PM MDT | Special Weather Statement | RIW | 60 min |
| May 26, 4:46 PM MDT | Special Weather Statement | RIW | 59 min |
| May 28, 10:41 AM MDT | Flood Watch | RIW | 24 hr |
| May 28, 1:14 PM MDT | High Wind Warning | RIW | 6 hr |
| Jun 6, 9:43 AM MDT | Flash Flood Watch | RIW | 42 hr |
| Jun 10, 7:18 PM MDT | Special Weather Statement | RIW | 42 min |
| Jun 12, 11:57 AM MDT | Winter Weather Advisory | RIW | 24 hr |
| Jun 16, 4:13 AM MDT | High Wind Watch | RIW | 9 hr |
| Jun 16, 1:41 PM MDT | High Wind Warning | RIW | 22 hr |
| Jun 19, 8:06 PM MDT | Special Weather Statement | RIW | 39 min |
| Jun 20, 12:55 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 22, 1:18 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 2:42 PM MDT | Severe Thunderstorm Warning | RIW | 63 min |
| Jun 22, 3:07 PM MDT | Tornado Warning | RIW | 38 min |
| Jun 22, 3:42 PM MDT | Severe Thunderstorm Warning | RIW | 48 min |
| Jun 22, 3:45 PM MDT | Special Weather Statement | RIW | 45 min |
| Jun 22, 4:06 PM MDT | Severe Thunderstorm Warning | RIW | 39 min |
| Jun 22, 4:15 PM MDT | Tornado Warning | RIW | 15 min |
| Jun 22, 4:47 PM MDT | Special Weather Statement | RIW | 43 min |
| Jun 29, 10:20 PM MDT | Special Weather Statement | RIW | 55 min |
| Jul 3, 5:07 PM MDT | Special Weather Statement | RIW | 38 min |
| Jul 3, 5:48 PM MDT | Severe Thunderstorm Warning | RIW | 37 min |
| Jul 4, 5:38 AM MDT | Special Weather Statement | RIW | 52 min |
| Jul 4, 5:55 AM MDT | Severe Thunderstorm Warning | RIW | 65 min |
| Jul 4, 7:03 AM MDT | Special Weather Statement | RIW | 27 min |
| Jul 11, 4:45 PM MDT | Special Weather Statement | RIW | 45 min |
| Jul 21, 2:49 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 21, 3:34 PM MDT | Special Weather Statement | RIW | 41 min |
| Jul 21, 3:46 PM MDT | Severe Thunderstorm Warning | RIW | 27 min |
| Jul 22, 5:20 AM MDT | Special Weather Statement | RIW | 40 min |
| Jul 22, 6:26 AM MDT | Special Weather Statement | RIW | 19 min |
| Jul 31, 12:59 PM MDT | Special Weather Statement | RIW | 46 min |
| Jul 31, 1:51 PM MDT | Special Weather Statement | RIW | 54 min |
| Jul 31, 2:44 PM MDT | Special Weather Statement | RIW | 46 min |
| Jul 31, 5:00 PM MDT | Special Weather Statement | RIW | 45 min |
| Jul 31, 5:43 PM MDT | Special Weather Statement | RIW | 47 min |
| Aug 4, 2:23 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Aug 4, 2:28 PM MDT | Severe Thunderstorm Warning | RIW | 47 min |
| Aug 4, 2:41 PM MDT | Special Weather Statement | RIW | 49 min |
| Aug 4, 3:11 PM MDT | Special Weather Statement | RIW | 34 min |
| Aug 4, 3:17 PM MDT | Severe Thunderstorm Warning | RIW | 28 min |
| Aug 10, 2:47 PM MDT | Fire Weather Watch | RIW | 12 hr |
| Aug 11, 2:41 AM MDT | Red Flag Warning | RIW | 16 hr |
| Aug 11, 8:37 PM MDT | Fire Weather Watch | RIW | 6 hr |
| Aug 12, 2:34 AM MDT | Red Flag Warning | RIW | 16 hr |
| Aug 18, 2:47 AM MDT | Red Flag Warning | RIW | 17 hr |
| Aug 20, 3:34 PM MDT | Fire Weather Watch | RIW | 11 hr |
| Aug 21, 2:05 AM MDT | Red Flag Warning | RIW | 22 hr |
| Aug 21, 2:57 PM MDT | Red Flag Warning | RIW | 27 hr |
| Aug 22, 4:51 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Aug 25, 3:16 AM MDT | Fire Weather Watch | RIW | 25 hr |
| Aug 26, 3:58 AM MDT | Red Flag Warning | RIW | 16 hr |
| Aug 26, 8:01 PM MDT | Red Flag Warning | RIW | 24 hr |
| Aug 27, 4:21 PM MDT | Special Weather Statement | RIW | 39 min |
| Aug 27, 4:50 PM MDT | Special Weather Statement | RIW | 40 min |
| Aug 29, 3:42 PM MDT | Special Weather Statement | RIW | 33 min |
| Sep 4, 3:09 PM MDT | Fire Weather Watch | RIW | 12 hr |
| Sep 5, 2:47 AM MDT | Red Flag Warning | RIW | 17 hr |
| Sep 6, 2:54 PM MDT | Freeze Warning | RIW | 18 hr |
| Sep 8, 1:20 PM MDT | Fire Weather Watch | RIW | 13 hr |
| Sep 9, 2:36 AM MDT | Red Flag Warning | RIW | 7 hr |
| Sep 9, 11:43 AM MDT | High Wind Warning | RIW | 6 hr |
| Sep 11, 10:01 AM MDT | Red Flag Warning | RIW | 10 hr |
| Sep 15, 8:17 PM MDT | Fire Weather Watch | RIW | 6 hr |
| Sep 16, 2:34 AM MDT | Red Flag Warning | RIW | 17 hr |
| Sep 18, 2:33 PM MDT | Fire Weather Watch | RIW | 15 hr |
| Sep 19, 3:37 AM MDT | Red Flag Warning | RIW | 16 hr |
| Sep 19, 2:46 PM MDT | Red Flag Warning | RIW | 28 hr |
| Sep 20, 2:54 PM MDT | Red Flag Warning | RIW | 29 hr |
| Sep 24, 2:07 AM MDT | Red Flag Warning | RIW | 17 hr |
| Sep 25, 1:44 PM MDT | Fire Weather Watch | RIW | 12 hr |
| Sep 26, 1:42 AM MDT | Red Flag Warning | RIW | 16 hr |
| Sep 28, 3:08 AM MDT | Red Flag Warning | RIW | 16 hr |
| Oct 7, 7:27 PM MDT | Special Weather Statement | RIW | 48 min |
| Oct 12, 3:23 AM MDT | Freeze Watch | RIW | 9 hr |
| Oct 12, 12:00 PM MDT | Freeze Warning | RIW | 21 hr |
| Oct 14, 2:48 PM MDT | Fire Weather Watch | RIW | 12 hr |
| Oct 15, 2:46 AM MDT | Red Flag Warning | RIW | 16 hr |
| Oct 23, 9:28 PM MDT | High Wind Watch | RIW | 5 hr |
| Oct 24, 2:37 AM MDT | High Wind Warning | RIW | 16 hr |
| Oct 25, 2:00 PM MDT | Freeze Warning | RIW | 18 hr |
| Oct 25, 3:13 PM MDT | Special Weather Statement | RIW | 47 min |
| Nov 14, 3:12 AM MST | Winter Weather Advisory | RIW | 29 hr |
| Nov 17, 2:28 AM MST | High Wind Watch | RIW | 12 hr |
| Nov 17, 2:28 PM MST | High Wind Warning | RIW | 27 hr |
| Nov 22, 3:12 PM MST | High Wind Watch | RIW | 8 hr |
| Nov 22, 11:04 PM MST | High Wind Warning | RIW | 21 hr |
| Nov 24, 2:35 PM MST | Wind Chill Warning | RIW | 17 hr |
| Nov 27, 2:42 PM MST | Winter Weather Advisory | RIW | 41 hr |
| Dec 1, 3:06 PM MST | High Wind Watch | RIW | 22 hr |
| Dec 2, 1:29 PM MST | High Wind Warning | RIW | 19 hr |
| Dec 6, 7:51 PM MST | Freezing Rain Advisory | RIW | 85 min |
| Dec 10, 2:03 PM MST | Winter Weather Advisory | RIW | 4 hr |
| Dec 13, 9:34 PM MST | High Wind Watch | RIW | 13 hr |
| Dec 14, 3:34 PM MST | Winter Weather Advisory | RIW | 27 hr |
| Dec 15, 1:00 PM MST | Winter Storm Warning | RIW | 6 hr |
| Dec 18, 12:52 PM MST | Winter Weather Advisory | RIW | 42 hr |
| Dec 28, 2:58 PM MST | Winter Storm Warning | RIW | 62 hr |
| Dec 28, 2:58 PM MST | Winter Weather Advisory | RIW | 62 hr |
| Dec 28, 5:41 PM MST | High Wind Watch | RIW | 10 hr |
| Dec 29, 4:03 AM MST | High Wind Warning | RIW | 10 hr |
| Dec 29, 4:39 AM MST | Winter Storm Watch | RIW | 10 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 | 8 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 34 |
| Flooding | |
| Flash Flood Watch | 1 |
| Flood Watch | 3 |
| Winter | |
| Winter Storm Warning | 8 |
| Winter Storm Watch | 7 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 22 |
| Cold | |
| Freeze Warning | 3 |
| Wind Chill Warning | 1 |
| Freeze Watch | 1 |
| Wind and dust | |
| High Wind Warning | 13 |
| High Wind Watch | 13 |
| Fire | |
| Red Flag Warning | 18 |
| Fire Weather Watch | 10 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20092011
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.