Alert archive / Montana / Carter County
Weather alerts in Carter County, Montana, 2013
189 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Carter County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 189
- Warnings
- 39
- Watches
- 26
- Advisories
- 24
- Busiest month
- July41 alerts
- Busiest day
- May 25, 201311 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 5 tornado warnings covering Carter County in 2013 had a tornado report inside them.
Carter County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 5 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 25 | 16 | 36% | 19 | 84% | 30 min |
| Flash flood warnings | 3 | 0 | 100% | 0 |
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 11, 2:35 PM MST | Winter Weather Advisory | BYZ | 14 hr |
| Jan 19, 9:15 PM MST | Wind Chill Advisory | BYZ | 30 hr |
| Jan 29, 3:39 AM MST | Wind Chill Advisory | BYZ | 23 hr |
| Jan 30, 4:22 AM MST | Wind Chill Advisory | BYZ | 32 hr |
| Mar 3, 2:25 PM MST | Winter Weather Advisory | BYZ | 31 hr |
| Mar 16, 3:16 AM MDT | Winter Storm Watch | BYZ | 12 hr |
| Mar 21, 4:00 AM MDT | Winter Weather Advisory | BYZ | 17 hr |
| Apr 8, 5:44 AM MDT | Winter Storm Watch | BYZ | 9 hr |
| Apr 8, 2:58 PM MDT | Winter Storm Warning | BYZ | 24 hr |
| Apr 12, 3:20 PM MDT | Winter Storm Watch | BYZ | 24 hr |
| Apr 13, 3:42 PM MDT | Winter Storm Warning | BYZ | 30 hr |
| Apr 13, 3:42 PM MDT | Winter Weather Advisory | BYZ | 30 hr |
| Apr 13, 10:51 PM MDT | Mesoscale Discussion | SPC | 5 hr |
| Apr 15, 2:28 PM MDT | Winter Storm Watch | BYZ | 13 hr |
| Apr 16, 3:00 AM MDT | Winter Weather Advisory | BYZ | 32 hr |
| Apr 20, 3:28 PM MDT | Winter Weather Advisory | BYZ | 44 hr |
| May 17, 5:35 AM MDT | Flash Flood Watch | BYZ | 22 hr |
| May 17, 2:23 PM MDT | Mesoscale Discussion | SPC | 97 min |
| May 17, 4:06 PM MDT | Special Weather Statement | BYZ | 54 min |
| May 17, 6:21 PM MDT | Special Weather Statement | BYZ | 54 min |
| May 17, 6:28 PM MDT | Mesoscale Discussion | SPC | 92 min |
| May 18, 4:44 PM MDT | Special Weather Statement | BYZ | 46 min |
| May 19, 3:58 AM MDT | Flash Flood Watch | BYZ | 35 hr |
| May 23, 12:42 PM MDT | High Wind Warning | BYZ | 11 hr |
| May 25, 11:41 AM MDT | Severe Thunderstorm Warning | BYZ | 49 min |
| May 25, 11:43 AM MDT | Mesoscale Discussion | SPC | 92 min |
| May 25, 1:52 PM MDT | Tornado Watch | SPC | 8 hr |
| May 25, 3:03 PM MDT | Severe Thunderstorm Warning | BYZ | 27 min |
| May 25, 3:22 PM MDT | Severe Thunderstorm Warning | BYZ | 38 min |
| May 25, 3:30 PM MDT | Severe Thunderstorm Warning | BYZ | 60 min |
| May 25, 4:07 PM MDT | Tornado Warning | BYZ | 23 min |
| May 25, 4:29 PM MDT | Tornado Warning | BYZ | 31 min |
| May 25, 5:00 PM MDT | Special Weather Statement | BYZ | 45 min |
| May 25, 5:00 PM MDT | Tornado Warning | BYZ | 30 min |
| May 25, 5:08 PM MDT | Severe Thunderstorm Warning | BYZ | 67 min |
| May 25, 6:13 PM MDT | Severe Thunderstorm Warning | BYZ | 47 min |
| May 25, 6:46 PM MDT | Tornado Warning | BYZ | 29 min |
| May 25, 7:13 PM MDT | Tornado Warning | BYZ | 32 min |
| May 25, 7:48 PM MDT | Mesoscale Discussion | SPC | 87 min |
| May 26, 9:31 PM MDT | Mesoscale Discussion | SPC | 119 min |
| May 27, 11:16 AM MDT | Special Weather Statement | BYZ | 44 min |
| May 27, 11:36 AM MDT | Mesoscale Discussion | SPC | 54 min |
| May 27, 11:51 AM MDT | Severe Thunderstorm Watch | SPC | 10 hr |
| May 27, 3:52 PM MDT | Mesoscale Discussion | SPC | 83 min |
| May 27, 4:52 PM MDT | Special Weather Statement | BYZ | 38 min |
| May 29, 4:01 AM MDT | Flash Flood Watch | BYZ | 59 hr |
| May 29, 11:22 PM MDT | Flash Flood Warning | BYZ | 4 hr |
| May 30, 3:29 AM MDT | Areal Flood Advisory | BYZ | 47 hr |
| Jun 2, 7:56 PM MDT | Mesoscale Discussion | SPC | 64 min |
| Jun 10, 11:01 PM MDT | Special Weather Statement | BYZ | 29 min |
| Jun 11, 3:54 AM MDT | Flash Flood Watch | BYZ | 68 hr |
| Jun 11, 1:07 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 11, 4:06 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Jun 11, 6:23 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jun 12, 4:06 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Jun 13, 12:37 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Jun 13, 4:44 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jun 21, 6:49 AM MDT | Mesoscale Discussion | SPC | 56 min |
| Jun 21, 7:27 AM MDT | Special Weather Statement | BYZ | 48 min |
| Jun 21, 10:54 AM MDT | Special Weather Statement | BYZ | 51 min |
| Jun 22, 2:13 PM MDT | Tornado Watch | SPC | 6 hr |
| Jun 22, 2:44 PM MDT | Special Weather Statement | BYZ | 46 min |
| Jun 22, 3:33 PM MDT | Special Weather Statement | BYZ | 42 min |
| Jun 22, 4:32 PM MDT | Special Weather Statement | BYZ | 43 min |
| Jun 24, 1:21 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jun 24, 6:39 PM MDT | Mesoscale Discussion | SPC | 96 min |
| Jul 5, 6:22 PM MDT | Special Weather Statement | BYZ | 53 min |
| Jul 6, 6:07 PM MDT | Special Weather Statement | BYZ | 53 min |
| Jul 7, 2:45 PM MDT | Special Weather Statement | BYZ | 45 min |
| Jul 7, 3:09 PM MDT | Severe Thunderstorm Warning | BYZ | 66 min |
| Jul 7, 4:00 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 7, 6:31 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jul 7, 6:57 PM MDT | Special Weather Statement | BYZ | 63 min |
| Jul 7, 7:53 PM MDT | Special Weather Statement | BYZ | 22 min |
| Jul 7, 8:17 PM MDT | Special Weather Statement | BYZ | 43 min |
| Jul 8, 3:42 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 4:01 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 8, 4:58 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 6:39 PM MDT | Severe Thunderstorm Warning | BYZ | 51 min |
| Jul 8, 7:29 PM MDT | Severe Thunderstorm Warning | BYZ | 61 min |
| Jul 8, 7:42 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 8:19 PM MDT | Severe Thunderstorm Warning | BYZ | 56 min |
| Jul 10, 4:49 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jul 11, 2:55 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Jul 11, 3:50 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 13, 2:08 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Jul 13, 2:47 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 13, 3:24 PM MDT | Special Weather Statement | BYZ | 36 min |
| Jul 13, 5:33 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jul 15, 1:51 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Jul 15, 2:48 PM MDT | Tornado Watch | SPC | 8 hr |
| Jul 15, 6:27 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Jul 22, 4:12 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jul 22, 4:58 PM MDT | Special Weather Statement | BYZ | 62 min |
| Jul 22, 5:05 PM MDT | Severe Thunderstorm Warning | BYZ | 55 min |
| Jul 22, 7:42 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Jul 22, 8:46 PM MDT | Severe Thunderstorm Warning | BYZ | 59 min |
| Jul 22, 9:23 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Jul 22, 9:53 PM MDT | Special Weather Statement | BYZ | 67 min |
| Jul 22, 10:34 PM MDT | Severe Thunderstorm Warning | BYZ | 41 min |
| Jul 24, 10:39 PM MDT | Special Weather Statement | BYZ | 66 min |
| Jul 24, 11:32 PM MDT | Severe Thunderstorm Warning | BYZ | 58 min |
| Jul 25, 12:27 AM MDT | Severe Thunderstorm Warning | BYZ | 48 min |
| Jul 25, 1:33 AM MDT | Special Weather Statement | BYZ | 42 min |
| Jul 30, 3:37 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 30, 4:33 PM MDT | Special Weather Statement | BYZ | 27 min |
| Jul 30, 5:05 PM MDT | Special Weather Statement | BYZ | 25 min |
| Aug 2, 12:33 AM MDT | Special Weather Statement | BYZ | 42 min |
| Aug 3, 1:50 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 3, 5:44 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Aug 3, 7:29 PM MDT | Severe Thunderstorm Warning | BYZ | 61 min |
| Aug 3, 8:20 PM MDT | Severe Thunderstorm Warning | BYZ | 25 min |
| Aug 3, 9:26 PM MDT | Severe Thunderstorm Warning | BYZ | 64 min |
| Aug 4, 2:24 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 5, 2:31 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Aug 5, 5:28 PM MDT | Severe Thunderstorm Warning | BYZ | 62 min |
| Aug 5, 6:27 PM MDT | Severe Thunderstorm Warning | BYZ | 63 min |
| Aug 5, 9:56 PM MDT | Special Weather Statement | BYZ | 49 min |
| Aug 7, 5:02 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 7, 6:49 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Aug 10, 9:47 PM MDT | Special Weather Statement | BYZ | 43 min |
| Aug 10, 10:45 PM MDT | Special Weather Statement | BYZ | 45 min |
| Aug 11, 2:37 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Aug 12, 2:10 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 12, 6:21 PM MDT | Special Weather Statement | BYZ | 39 min |
| Aug 12, 6:56 PM MDT | Flash Flood Warning | BYZ | 3 hr |
| Aug 12, 7:09 PM MDT | Special Weather Statement | BYZ | 51 min |
| Aug 13, 3:30 AM MDT | Special Weather Statement | BYZ | 45 min |
| Aug 13, 12:20 PM MDT | Special Weather Statement | BYZ | 55 min |
| Aug 13, 12:36 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 13, 12:55 PM MDT | Flash Flood Warning | BYZ | 3 hr |
| Aug 13, 2:22 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 6:25 PM MDT | Special Weather Statement | BYZ | 50 min |
| Aug 14, 7:29 PM MDT | Severe Thunderstorm Warning | BYZ | 61 min |
| Aug 14, 8:35 PM MDT | Special Weather Statement | BYZ | 40 min |
| Aug 23, 11:21 PM MDT | Special Weather Statement | BYZ | 39 min |
| Aug 23, 11:59 PM MDT | Special Weather Statement | BYZ | 61 min |
| Aug 24, 1:03 AM MDT | Special Weather Statement | BYZ | 57 min |
| Aug 28, 4:23 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 4, 3:57 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 4, 5:10 PM MDT | Special Weather Statement | BYZ | 50 min |
| Sep 4, 6:02 PM MDT | Special Weather Statement | BYZ | 58 min |
| Sep 6, 10:41 PM MDT | Special Weather Statement | BYZ | 64 min |
| Sep 6, 11:46 PM MDT | Special Weather Statement | BYZ | 59 min |
| Sep 7, 1:50 AM MDT | Special Weather Statement | BYZ | 55 min |
| Sep 7, 9:49 AM MDT | Flash Flood Watch | BYZ | 40 hr |
| Sep 7, 2:24 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 7, 4:21 PM MDT | Severe Thunderstorm Warning | BYZ | 54 min |
| Sep 7, 4:21 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 7, 5:12 PM MDT | Severe Thunderstorm Warning | BYZ | 63 min |
| Sep 7, 6:16 PM MDT | Severe Thunderstorm Warning | BYZ | 29 min |
| Sep 7, 6:50 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Sep 7, 6:56 PM MDT | Special Weather Statement | BYZ | 64 min |
| Sep 7, 7:16 PM MDT | Severe Thunderstorm Warning | BYZ | 59 min |
| Sep 7, 8:15 PM MDT | Special Weather Statement | BYZ | 30 min |
| Sep 7, 9:15 PM MDT | Special Weather Statement | BYZ | 45 min |
| Sep 7, 10:00 PM MDT | Mesoscale Discussion | SPC | 60 min |
| Sep 7, 10:10 PM MDT | Special Weather Statement | BYZ | 65 min |
| Sep 7, 11:20 PM MDT | Special Weather Statement | BYZ | 40 min |
| Sep 8, 3:52 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 8, 6:47 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 8, 7:22 PM MDT | Special Weather Statement | BYZ | 23 min |
| Sep 8, 7:47 PM MDT | Special Weather Statement | BYZ | 43 min |
| Sep 17, 6:29 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Sep 17, 7:03 PM MDT | Special Weather Statement | BYZ | 42 min |
| Sep 17, 7:34 PM MDT | Special Weather Statement | BYZ | 56 min |
| Sep 18, 1:16 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Sep 25, 1:50 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Sep 25, 6:41 PM MDT | Mesoscale Discussion | SPC | 2 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 Weather Advisory | BYZ | 29 hr |
| Oct 14, 9:16 PM MDT | Winter Weather Advisory | BYZ | 6 hr |
| Oct 27, 3:59 PM MDT | Winter Weather Advisory | BYZ | 29 hr |
| Nov 10, 9:47 AM MST | Winter Weather Advisory | BYZ | 23 hr |
| Nov 19, 3:55 AM MST | Winter Weather Advisory | BYZ | 47 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 4, 2:47 AM MST | Winter Weather Advisory | BYZ | 20 hr |
| Dec 4, 10:45 PM MST | Wind Chill Advisory | BYZ | 64 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 23, 8:15 PM MST | Freezing Rain Advisory | BYZ | 14 hr |
| Dec 28, 2:57 AM MST | Wind Chill Advisory | BYZ | 20 hr |
| Dec 31, 3:32 AM MST | Winter Weather Advisory | BYZ | 38 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 | 25 |
| Tornado Warning | 5 |
| Severe Thunderstorm Watch | 11 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 48 |
| Special Weather Statement | 52 |
| Flooding | |
| Flash Flood Warning | 3 |
| Flash Flood Watch | 5 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 7 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 16 |
| Cold | |
| Wind Chill Advisory | 6 |
| Wind and dust | |
| High Wind Warning | 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.