Alert archive / Wyoming / Campbell County
Weather alerts in Campbell County, Wyoming, 2009
85 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Campbell County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 85
- Warnings
- 32
- Watches
- 14
- Advisories
- 15
- Busiest month
- July28 alerts
- Busiest day
- July 13, 20096 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Campbell County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 25 | 16 | 36% | 18 | 89% | 21 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 Rapid City, SD: tornado warnings | 27 | 6 | 78% | 10 | 90% | 19 min |
| NWS Rapid City, SD: severe thunderstorm warnings | 262 | 172 | 34% | 345 | 79% | 27 min |
| NWS Rapid City, SD: flash flood warnings | 10 | 4 | 60% | 4 | 75% | 59 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 24, 10:28 AM MST | Winter Weather Advisory | UNR | 53 hr |
| Feb 12, 1:19 PM MST | Winter Weather Advisory | UNR | 25 hr |
| Feb 25, 11:43 AM MST | Winter Weather Advisory | UNR | 22 hr |
| Feb 26, 1:07 PM MST | Winter Weather Advisory | UNR | 26 hr |
| Mar 8, 3:21 AM MDT | Winter Storm Watch | UNR | 24 hr |
| Mar 9, 3:23 AM MDT | Winter Storm Warning | UNR | 33 hr |
| Mar 9, 8:49 PM MDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 21, 3:03 AM MDT | Blizzard Watch | UNR | 24 hr |
| Mar 22, 3:30 AM MDT | Blizzard Warning | UNR | 65 hr |
| Mar 23, 3:59 AM MDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 23, 11:06 AM MDT | Mesoscale Discussion | SPC | 5 hr |
| Mar 28, 2:44 AM MDT | Winter Storm Watch | UNR | 24 hr |
| Mar 29, 3:04 AM MDT | Blizzard Warning | UNR | 57 hr |
| Mar 29, 3:04 AM MDT | Winter Storm Warning | UNR | 51 hr |
| Apr 2, 4:06 AM MDT | Winter Storm Watch | UNR | 25 hr |
| Apr 3, 4:55 AM MDT | Winter Storm Warning | UNR | 41 hr |
| Apr 3, 4:55 AM MDT | Winter Weather Advisory | UNR | 27 hr |
| Apr 25, 1:46 PM MDT | Winter Storm Warning | UNR | 25 hr |
| Apr 28, 4:45 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| May 12, 1:51 PM MDT | Severe Thunderstorm Warning | UNR | 39 min |
| Jun 6, 9:44 AM MDT | Mesoscale Discussion | SPC | 91 min |
| Jun 13, 4:37 PM MDT | Severe Thunderstorm Warning | UNR | 29 min |
| Jun 13, 5:02 PM MDT | Severe Thunderstorm Warning | UNR | 58 min |
| Jun 13, 5:21 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 13, 5:41 PM MDT | Severe Thunderstorm Warning | UNR | 64 min |
| Jun 13, 7:58 PM MDT | Mesoscale Discussion | SPC | 62 min |
| Jun 14, 3:53 AM MDT | Flood Watch | UNR | 19 hr |
| Jun 14, 6:17 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jun 15, 10:56 AM MDT | Severe Thunderstorm Warning | UNR | 64 min |
| Jun 15, 2:49 PM MDT | Severe Thunderstorm Warning | UNR | 56 min |
| Jun 15, 2:56 PM MDT | Areal Flood Advisory | UNR | 6 hr |
| Jun 17, 4:43 PM MDT | Severe Thunderstorm Warning | UNR | 36 min |
| Jul 1, 8:47 PM MDT | Severe Thunderstorm Warning | UNR | 58 min |
| Jul 2, 11:25 AM MDT | Mesoscale Discussion | SPC | 65 min |
| Jul 2, 11:41 AM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 2, 2:17 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jul 2, 3:39 PM MDT | Severe Thunderstorm Warning | UNR | 66 min |
| Jul 2, 6:29 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jul 5, 4:03 PM MDT | Areal Flood Advisory | UNR | 67 min |
| Jul 6, 2:35 PM MDT | Severe Thunderstorm Warning | UNR | 42 min |
| Jul 6, 4:40 PM MDT | Mesoscale Discussion | SPC | 35 min |
| Jul 6, 5:00 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 6, 6:32 PM MDT | Severe Thunderstorm Warning | UNR | 73 min |
| Jul 6, 7:35 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Jul 8, 1:02 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jul 8, 2:20 PM MDT | Tornado Watch | SPC | 8 hr |
| Jul 8, 5:46 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Jul 9, 8:57 PM MDT | Severe Thunderstorm Warning | UNR | 63 min |
| Jul 9, 8:59 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jul 9, 9:18 PM MDT | Severe Thunderstorm Warning | UNR | 57 min |
| Jul 12, 2:05 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jul 13, 12:34 PM MDT | Tornado Watch | SPC | 8 hr |
| Jul 13, 1:18 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jul 13, 3:50 PM MDT | Severe Thunderstorm Warning | UNR | 55 min |
| Jul 13, 4:04 PM MDT | Severe Thunderstorm Warning | UNR | 56 min |
| Jul 13, 4:40 PM MDT | Severe Thunderstorm Warning | UNR | 65 min |
| Jul 13, 4:51 PM MDT | Severe Thunderstorm Warning | UNR | 54 min |
| Jul 13, 6:27 PM MDT | Severe Thunderstorm Warning | UNR | 47 min |
| Jul 20, 2:07 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Jul 20, 2:25 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 4, 2:54 PM MDT | Mesoscale Discussion | SPC | 96 min |
| Aug 4, 3:37 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 4, 5:04 PM MDT | Severe Thunderstorm Warning | UNR | 56 min |
| Aug 4, 5:19 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Aug 4, 5:54 PM MDT | Severe Thunderstorm Warning | UNR | 66 min |
| Aug 4, 6:09 PM MDT | Severe Thunderstorm Warning | UNR | 51 min |
| Aug 7, 11:50 AM MDT | Mesoscale Discussion | SPC | 115 min |
| Aug 7, 2:38 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 7, 4:54 PM MDT | Severe Thunderstorm Warning | UNR | 35 min |
| Aug 7, 5:55 PM MDT | Mesoscale Discussion | SPC | 95 min |
| Aug 7, 11:54 PM MDT | Severe Thunderstorm Warning | UNR | 66 min |
| Aug 8, 12:36 AM MDT | Severe Thunderstorm Warning | UNR | 54 min |
| Aug 8, 2:09 AM MDT | Severe Thunderstorm Warning | UNR | 66 min |
| Aug 8, 2:18 AM MDT | Mesoscale Discussion | SPC | 117 min |
| Sep 21, 8:05 PM MDT | Frost Advisory | UNR | 7 hr |
| Sep 27, 2:34 PM MDT | Frost Advisory | UNR | 17 hr |
| Oct 2, 3:46 AM MDT | Freeze Warning | UNR | 29 hr |
| Oct 3, 3:18 PM MDT | Winter Storm Watch | UNR | 24 hr |
| Oct 4, 3:17 PM MDT | Winter Weather Advisory | UNR | 19 hr |
| Oct 4, 6:31 PM MDT | Mesoscale Discussion | SPC | 6 hr |
| Oct 7, 3:37 AM MDT | Winter Weather Advisory | UNR | 24 hr |
| Oct 28, 4:32 AM MDT | Winter Weather Advisory | UNR | 46 hr |
| Dec 8, 2:33 PM MST | Wind Chill Advisory | UNR | 21 hr |
| Dec 9, 2:55 PM MST | Wind Chill Advisory | UNR | 13 hr |
| Dec 22, 12:36 PM MST | Winter Weather Advisory | UNR | 4 days |
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 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.