Alert archive / Montana / Carbon County
Weather alerts in Carbon County, Montana, 2013
138 weather alerts in 2013, 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 2013. Tap one for its archive.
- Alerts
- 138
- Warnings
- 28
- Watches
- 15
- Advisories
- 17
- Busiest month
- June34 alerts
- Busiest day
- June 13, 20138 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, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 13 | 10 | 23% | 8 | 38% | 25 min |
| Flash flood warnings | 3 | 1 | 67% | 3 | 33% | 1 min |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Billings, MT: tornado warnings | 15 | 2 | 87% | 5 | 40% | 7 min |
| NWS Billings, MT: severe thunderstorm warnings | 196 | 118 | 40% | 320 | 75% | 24 min |
| NWS Billings, MT: flash flood warnings | 44 | 15 | 66% | 35 | 57% | 52 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 8, 3:51 PM MST | Winter Storm Watch | BYZ | 36 hr |
| Jan 9, 4:06 PM MST | Winter Storm Warning | BYZ | 60 hr |
| Jan 27, 3:14 AM MST | Winter Weather Advisory | BYZ | 28 hr |
| Feb 9, 3:11 AM MST | Winter Weather Advisory | BYZ | 41 hr |
| Feb 10, 3:15 AM MST | Winter Storm Warning | BYZ | 7 hr |
| Feb 13, 3:22 PM MST | Winter Weather Advisory | BYZ | 29 hr |
| Feb 17, 9:09 AM MST | Winter Weather Advisory | BYZ | 27 hr |
| Apr 8, 2:58 PM MDT | Winter Storm Warning | BYZ | 24 hr |
| Apr 8, 2:58 PM MDT | Winter Weather Advisory | BYZ | 6 hr |
| Apr 16, 3:00 AM MDT | Winter Weather Advisory | BYZ | 32 hr |
| Apr 19, 3:44 PM MDT | Winter Storm Watch | BYZ | 24 hr |
| Apr 20, 3:28 PM MDT | Winter Storm Warning | BYZ | 47 hr |
| Apr 30, 2:48 PM MDT | Winter Weather Advisory | BYZ | 12 hr |
| May 23, 5:11 PM MDT | Special Weather Statement | BYZ | 49 min |
| May 23, 5:16 PM MDT | Special Weather Statement | BYZ | 44 min |
| May 23, 5:30 PM MDT | Severe Thunderstorm Warning | BYZ | 45 min |
| May 23, 5:43 PM MDT | Special Weather Statement | RIW | 32 min |
| May 23, 5:47 PM MDT | Mesoscale Discussion | SPC | 88 min |
| May 23, 6:05 PM MDT | Special Weather Statement | BYZ | 40 min |
| May 27, 11:10 AM MDT | Special Weather Statement | BYZ | 65 min |
| Jun 7, 10:24 PM MDT | Special Weather Statement | BYZ | 36 min |
| Jun 10, 3:03 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jun 10, 3:08 PM MDT | Special Weather Statement | RIW | 37 min |
| Jun 10, 6:30 PM MDT | Special Weather Statement | BYZ | 45 min |
| Jun 10, 7:17 PM MDT | Special Weather Statement | BYZ | 43 min |
| Jun 10, 9:37 PM MDT | Special Weather Statement | BYZ | 23 min |
| Jun 11, 12:05 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jun 11, 1:07 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 11, 7:33 PM MDT | Special Weather Statement | BYZ | 42 min |
| Jun 13, 10:54 AM MDT | Special Weather Statement | BYZ | 51 min |
| Jun 13, 12:37 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Jun 13, 1:06 PM MDT | Severe Thunderstorm Watch | SPC | 12 hr |
| Jun 13, 3:23 PM MDT | Special Weather Statement | BYZ | 37 min |
| Jun 13, 4:44 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jun 13, 5:16 PM MDT | Special Weather Statement | BYZ | 44 min |
| Jun 13, 5:33 PM MDT | Special Weather Statement | RIW | 42 min |
| Jun 13, 5:55 PM MDT | Special Weather Statement | BYZ | 35 min |
| Jun 13, 6:14 PM MDT | Special Weather Statement | BYZ | 46 min |
| Jun 13, 6:37 PM MDT | Special Weather Statement | RIW | 38 min |
| Jun 13, 8:06 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Jun 13, 8:46 PM MDT | Severe Thunderstorm Warning | BYZ | 59 min |
| Jun 13, 9:25 PM MDT | Special Weather Statement | BYZ | 50 min |
| Jun 13, 9:27 PM MDT | Special Weather Statement | BYZ | 48 min |
| Jun 13, 9:33 PM MDT | Severe Thunderstorm Warning | BYZ | 57 min |
| Jun 13, 11:18 PM MDT | Severe Thunderstorm Warning | BYZ | 27 min |
| Jun 19, 3:54 PM MDT | Severe Thunderstorm Warning | BYZ | 36 min |
| Jun 19, 5:30 PM MDT | Special Weather Statement | BYZ | 45 min |
| Jun 22, 1:57 PM MDT | Special Weather Statement | BYZ | 48 min |
| Jun 22, 5:44 PM MDT | Special Weather Statement | BYZ | 46 min |
| Jun 22, 5:51 PM MDT | Special Weather Statement | BYZ | 39 min |
| Jun 24, 2:18 PM MDT | Special Weather Statement | RIW | 42 min |
| Jun 29, 5:08 PM MDT | Special Weather Statement | BYZ | 37 min |
| Jun 29, 7:29 PM MDT | Severe Thunderstorm Warning | BYZ | 61 min |
| Jun 29, 8:03 PM MDT | Severe Thunderstorm Warning | BYZ | 57 min |
| Jul 4, 3:57 PM MDT | Special Weather Statement | BYZ | 48 min |
| Jul 4, 4:47 PM MDT | Special Weather Statement | BYZ | 43 min |
| Jul 4, 5:01 PM MDT | Flash Flood Warning | BYZ | 59 min |
| Jul 4, 5:34 PM MDT | Special Weather Statement | BYZ | 56 min |
| Jul 4, 5:56 PM MDT | Flash Flood Warning | BYZ | 3 hr |
| Jul 4, 6:03 PM MDT | Severe Thunderstorm Warning | BYZ | 57 min |
| Jul 5, 1:03 PM MDT | Special Weather Statement | RIW | 42 min |
| Jul 5, 1:23 PM MDT | Special Weather Statement | RIW | 52 min |
| Jul 7, 2:47 PM MDT | Mesoscale Discussion | SPC | 58 min |
| Jul 7, 2:59 PM MDT | Special Weather Statement | BYZ | 46 min |
| Jul 7, 4:00 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 7, 5:17 PM MDT | Special Weather Statement | RIW | 28 min |
| Jul 7, 5:19 PM MDT | Special Weather Statement | RIW | 26 min |
| Jul 7, 5:21 PM MDT | Special Weather Statement | BYZ | 24 min |
| Jul 7, 6:30 PM MDT | Special Weather Statement | RIW | 45 min |
| Jul 7, 6:31 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jul 7, 7:15 PM MDT | Special Weather Statement | RIW | 45 min |
| Jul 8, 1:04 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 8, 4:35 PM MDT | Severe Thunderstorm Warning | BYZ | 55 min |
| Jul 8, 4:58 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 4:42 PM MDT | Special Weather Statement | BYZ | 33 min |
| Jul 13, 5:15 PM MDT | Special Weather Statement | BYZ | 60 min |
| Jul 13, 5:39 PM MDT | Areal Flood Warning | BYZ | 3 hr |
| Jul 13, 5:54 PM MDT | Areal Flood Warning | BYZ | 3 hr |
| Jul 14, 3:48 PM MDT | Special Weather Statement | BYZ | 57 min |
| Jul 17, 4:37 PM MDT | Special Weather Statement | BYZ | 38 min |
| Jul 17, 7:40 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Jul 28, 1:34 PM MDT | Special Weather Statement | BYZ | 41 min |
| Jul 28, 3:38 PM MDT | Special Weather Statement | BYZ | 52 min |
| Jul 28, 3:56 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 30, 3:37 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 30, 5:29 PM MDT | Special Weather Statement | RIW | 46 min |
| Jul 30, 6:00 PM MDT | Special Weather Statement | RIW | 45 min |
| Jul 30, 7:24 PM MDT | Special Weather Statement | BYZ | 36 min |
| Aug 1, 1:26 PM MDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Aug 1, 4:55 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Aug 1, 7:38 PM MDT | Severe Thunderstorm Warning | BYZ | 52 min |
| Aug 1, 8:26 PM MDT | Severe Thunderstorm Warning | BYZ | 64 min |
| Aug 2, 4:26 PM MDT | Special Weather Statement | BYZ | 34 min |
| Aug 5, 4:08 PM MDT | Special Weather Statement | BYZ | 37 min |
| Aug 8, 10:01 PM MDT | Special Weather Statement | BYZ | 59 min |
| Aug 10, 3:42 PM MDT | Special Weather Statement | BYZ | 48 min |
| Aug 10, 4:13 PM MDT | Special Weather Statement | BYZ | 47 min |
| Aug 10, 4:24 PM MDT | Severe Thunderstorm Warning | BYZ | 51 min |
| Aug 10, 5:08 PM MDT | Special Weather Statement | BYZ | 37 min |
| Aug 13, 3:53 PM MDT | Special Weather Statement | BYZ | 52 min |
| Aug 13, 4:29 PM MDT | Special Weather Statement | RIW | 46 min |
| Aug 13, 5:30 PM MDT | Special Weather Statement | BYZ | 60 min |
| Aug 13, 5:46 PM MDT | Flash Flood Warning | BYZ | 3 hr |
| Aug 23, 3:08 PM MDT | Fire Weather Watch | BYZ | 24 hr |
| Aug 30, 2:37 PM MDT | Special Weather Statement | RIW | 38 min |
| Aug 30, 5:11 PM MDT | Special Weather Statement | BYZ | 49 min |
| Sep 4, 5:02 PM MDT | Special Weather Statement | BYZ | 28 min |
| Sep 5, 9:40 PM MDT | Special Weather Statement | RIW | 50 min |
| Sep 5, 10:22 PM MDT | Special Weather Statement | RIW | 23 min |
| Sep 8, 1:40 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 8, 4:49 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Sep 8, 5:14 PM MDT | Special Weather Statement | BYZ | 46 min |
| Sep 8, 6:50 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Sep 14, 1:08 PM MDT | Areal Flood Advisory | BYZ | 3 hr |
| Sep 17, 3:44 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Sep 17, 5:58 PM MDT | Severe Thunderstorm Warning | BYZ | 32 min |
| Sep 17, 6:16 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Sep 23, 3:43 PM MDT | Winter Storm Watch | BYZ | 36 hr |
| Sep 25, 3:55 AM MDT | Winter Storm Warning | BYZ | 23 hr |
| Sep 25, 4:11 PM MDT | Winter Weather Advisory | BYZ | 11 hr |
| Sep 26, 3:10 PM MDT | Winter Weather Advisory | BYZ | 21 hr |
| Sep 28, 2:29 PM MDT | High Wind Warning | BYZ | 49 hr |
| Oct 1, 1:47 PM MDT | Winter Storm Watch | BYZ | 25 hr |
| Oct 2, 2:49 PM MDT | Winter Storm Warning | BYZ | 60 hr |
| Oct 12, 3:21 PM MDT | Winter Storm Watch | BYZ | 25 hr |
| Oct 13, 4:38 PM MDT | Winter Storm Warning | BYZ | 31 hr |
| Oct 25, 4:11 AM MDT | Winter Storm Watch | BYZ | 60 hr |
| Oct 27, 3:59 PM MDT | Winter Storm Warning | BYZ | 29 hr |
| Nov 19, 3:55 AM MST | Winter Weather Advisory | BYZ | 47 hr |
| Nov 30, 4:12 AM MST | Winter Storm Watch | BYZ | 11 hr |
| Nov 30, 3:06 PM MST | Winter Storm Warning | BYZ | 3 days |
| Dec 1, 4:07 AM MST | Winter Storm Watch | BYZ | 24 hr |
| Dec 2, 3:51 AM MST | Winter Weather Advisory | BYZ | 47 hr |
| Dec 8, 3:59 AM MST | Wind Chill Advisory | BYZ | 31 hr |
| Dec 8, 3:59 AM MST | Winter Weather Advisory | BYZ | 65 hr |
| Dec 18, 4:00 AM MST | Winter Weather Advisory | BYZ | 36 hr |
| Dec 21, 2:57 AM MST | Winter Weather Advisory | BYZ | 41 hr |
| Dec 22, 9:05 PM MST | Winter Weather Advisory | BYZ | 18 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 | 13 |
| Severe Thunderstorm Watch | 6 |
| Mesoscale Discussion | 17 |
| Special Weather Statement | 61 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 3 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 9 |
| Winter Storm Watch | 8 |
| Winter Weather Advisory | 15 |
| Cold | |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 1 |
| Fire | |
| Fire Weather Watch | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.