Alert archive / Montana / Carbon County
Weather alerts in Carbon County, Montana, 2008
103 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Carbon County and its neighbors
Each county as a circle sized by its count in 2008. Tap one for its archive.
- Alerts
- 103
- Warnings
- 34
- Watches
- 28
- Advisories
- 19
- Busiest month
- July25 alerts
- Busiest day
- June 26, 20086 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Carbon County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 5 | 38% | 4 | 75% | 35 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Billings, MT: tornado warnings | 1 | 1 | 0% | 2 | 50% | 7 min |
| NWS Billings, MT: severe thunderstorm warnings | 187 | 80 | 57% | 140 | 79% | 27 min |
| NWS Billings, MT: flash flood warnings | 8 | 3 | 63% | 6 | 83% | 155 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 18, 1:47 AM MST | Snow Advisory | BYZ | 14 hr |
| Jan 18, 4:14 PM MST | Winter Storm Watch | BYZ | 13 hr |
| Jan 19, 4:51 AM MST | Winter Storm Warning | BYZ | 34 hr |
| Jan 20, 3:01 PM MST | Snow and Blowing Snow Advisory | BYZ | 6 hr |
| Jan 21, 6:33 PM MST | Wind Chill Advisory | BYZ | 15 hr |
| Jan 27, 3:56 AM MST | Winter Storm Warning | BYZ | 41 hr |
| Jan 27, 2:40 PM MST | Winter Weather Advisory | BYZ | 31 hr |
| Feb 3, 3:38 AM MST | Snow Advisory | BYZ | 30 hr |
| Feb 6, 3:55 AM MST | Winter Storm Watch | BYZ | 12 hr |
| Feb 7, 7:57 PM MST | High Wind Watch | BYZ | 23 hr |
| Feb 10, 4:32 AM MST | Winter Storm Watch | BYZ | 10 hr |
| Feb 10, 2:54 PM MST | Winter Storm Warning | BYZ | 20 hr |
| Feb 12, 9:40 AM MST | Winter Storm Watch | BYZ | 5 hr |
| Feb 12, 2:47 PM MST | Winter Storm Warning | BYZ | 27 hr |
| Mar 3, 3:46 PM MST | Winter Storm Warning | BYZ | 30 hr |
| Mar 3, 9:17 PM MST | Snow Advisory | BYZ | 24 hr |
| Mar 25, 2:57 PM MDT | Winter Storm Watch | BYZ | 45 hr |
| Mar 29, 3:54 PM MDT | Winter Storm Watch | BYZ | 23 hr |
| Mar 30, 3:23 PM MDT | Snow Advisory | BYZ | 29 hr |
| Mar 31, 5:30 AM MDT | Heavy Snow Warning | BYZ | 15 hr |
| Apr 9, 9:30 PM MDT | Snow Advisory | BYZ | 8 hr |
| Apr 15, 1:36 PM MDT | Heavy Snow Warning | BYZ | 4 hr |
| Apr 17, 3:10 PM MDT | Winter Storm Watch | BYZ | 54 hr |
| Apr 19, 3:57 PM MDT | Heavy Snow Warning | BYZ | 24 hr |
| Apr 19, 3:57 PM MDT | Snow Advisory | BYZ | 24 hr |
| Apr 28, 3:03 PM MDT | Fire Weather Watch | BYZ | 15 hr |
| Apr 29, 5:59 AM MDT | Red Flag Warning | BYZ | 17 hr |
| May 9, 7:18 PM MDT | Snow Advisory | BYZ | 8 hr |
| May 11, 9:07 PM MDT | Heavy Snow Warning | BYZ | 14 hr |
| May 11, 11:56 PM MDT | Snow Advisory | BYZ | 7 hr |
| May 17, 3:06 PM MDT | River Flood Watch | BYZ | 47 hr |
| May 20, 1:28 PM MDT | Flood Watch | BYZ | 5 days |
| May 21, 6:33 PM MDT | Heavy Snow Warning | BYZ | 34 hr |
| Jun 1, 4:03 PM MDT | Special Weather Statement | RIW | 57 min |
| Jun 2, 5:55 PM MDT | Severe Thunderstorm Warning | BYZ | 47 min |
| Jun 10, 3:44 PM MDT | Severe Thunderstorm Warning | BYZ | 61 min |
| Jun 17, 5:48 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 18, 3:57 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jun 18, 7:49 PM MDT | Severe Thunderstorm Warning | BYZ | 56 min |
| Jun 19, 11:58 AM MDT | River Flood Watch | BYZ | 4 days |
| Jun 19, 11:58 AM MDT | River Flood Watch | BYZ | 6 days |
| Jun 25, 3:01 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 25, 6:33 PM MDT | River Flood Warning | BYZ | 8 days |
| Jun 25, 7:06 PM MDT | Severe Thunderstorm Warning | BYZ | 54 min |
| Jun 25, 7:49 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 25, 7:53 PM MDT | Severe Thunderstorm Warning | BYZ | 37 min |
| Jun 25, 8:06 PM MDT | Severe Thunderstorm Warning | BYZ | 47 min |
| Jun 25, 8:26 PM MDT | Severe Thunderstorm Warning | BYZ | 64 min |
| Jun 26, 7:16 PM MDT | Special Weather Statement | RIW | 59 min |
| Jul 1, 1:26 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 2:48 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 1, 6:02 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jul 1, 8:13 PM MDT | Special Weather Statement | RIW | 32 min |
| Jul 2, 1:27 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 2, 4:57 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Jul 4, 3:02 PM MDT | Mesoscale Discussion | SPC | 58 min |
| Jul 5, 4:25 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Jul 6, 1:14 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jul 6, 1:32 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 6, 6:08 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Jul 15, 10:58 AM MDT | Areal Flood Warning | BYZ | 51 hr |
| Jul 16, 3:18 PM MDT | Severe Thunderstorm Warning | BYZ | 42 min |
| Jul 18, 12:04 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jul 18, 1:33 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 18, 3:32 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jul 21, 5:20 PM MDT | Flash Flood Warning | BYZ | 4 hr |
| Jul 22, 3:12 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Jul 22, 3:24 PM MDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 22, 8:03 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jul 26, 12:46 PM MDT | Special Weather Statement | RIW | 44 min |
| Jul 28, 3:50 PM MDT | Fire Weather Watch | BYZ | 12 hr |
| Jul 29, 3:46 AM MDT | Red Flag Warning | BYZ | 24 hr |
| Jul 30, 9:47 AM MDT | Red Flag Warning | BYZ | 12 hr |
| Jul 31, 3:11 PM MDT | Fire Weather Watch | BYZ | 14 hr |
| Aug 1, 5:07 AM MDT | Red Flag Warning | BYZ | 19 hr |
| Aug 3, 8:03 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Aug 9, 2:32 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Aug 21, 2:33 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Aug 24, 2:21 AM MDT | Fire Weather Watch | BYZ | 25 hr |
| Aug 25, 3:31 AM MDT | Red Flag Warning | BYZ | 38 hr |
| Aug 27, 3:41 AM MDT | Red Flag Warning | BYZ | 17 hr |
| Aug 29, 3:45 PM MDT | Red Flag Warning | BYZ | 29 hr |
| Aug 31, 9:31 AM MDT | Flash Flood Watch | BYZ | 30 hr |
| Aug 31, 5:04 PM MDT | Special Weather Statement | RIW | 41 min |
| Oct 9, 4:12 AM MDT | Winter Storm Watch | BYZ | 12 hr |
| Oct 9, 4:16 PM MDT | Winter Storm Warning | BYZ | 71 hr |
| Oct 11, 10:38 AM MDT | Mesoscale Discussion | SPC | 4 hr |
| Nov 19, 8:31 PM MST | Winter Weather Advisory | BYZ | 7 hr |
| Dec 1, 3:42 PM MST | Winter Weather Advisory | BYZ | 31 hr |
| Dec 7, 3:45 AM MST | Winter Storm Watch | BYZ | 12 hr |
| Dec 7, 3:52 PM MST | Winter Storm Warning | BYZ | 24 hr |
| Dec 7, 3:52 PM MST | Winter Weather Advisory | BYZ | 24 hr |
| Dec 11, 3:40 PM MST | Winter Storm Watch | BYZ | 24 hr |
| Dec 12, 3:48 PM MST | Winter Storm Warning | BYZ | 35 hr |
| Dec 13, 9:16 PM MST | Wind Chill Advisory | BYZ | 31 hr |
| Dec 18, 9:28 PM MST | Winter Weather Advisory | BYZ | 24 hr |
| Dec 21, 9:30 PM MST | Winter Storm Watch | BYZ | 7 hr |
| Dec 22, 4:20 AM MST | Winter Storm Warning | BYZ | 23 hr |
| Dec 22, 4:20 AM MST | Winter Weather Advisory | BYZ | 35 hr |
| Dec 25, 2:18 PM MST | Winter Storm Warning | BYZ | 31 hr |
| Dec 25, 2:18 PM MST | Winter Weather Advisory | BYZ | 26 hr |
| Dec 26, 4:12 PM MST | Winter Weather Advisory | BYZ | 23 hr |
| Dec 29, 9:39 AM MST | Winter Storm Warning | BYZ | 14 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 archive20072009
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.