Alert archive / Montana / Park County
Weather alerts in Park County, Montana, 2018
132 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Park County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 132
- Warnings
- 26
- Watches
- 17
- Advisories
- 49
- Busiest month
- May18 alerts
- Busiest day
- May 31, 20186 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Park County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 4 | 1 | 75% | 6 | 17% | 36 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Billings, MT: tornado warnings | 2 | 2 | 0% | 5 | 60% | 23 min |
| NWS Billings, MT: severe thunderstorm warnings | 176 | 84 | 52% | 213 | 73% | 23 min |
| NWS Billings, MT: flash flood warnings | 8 | 6 | 25% | 7 | 86% | 44 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 1, 3:24 PM MST | Winter Weather Advisory | BYZ | 24 hr |
| Jan 9, 4:11 AM MST | Winter Storm Watch | BYZ | 11 hr |
| Jan 9, 4:25 AM MST | Wind Advisory | BYZ | 13 hr |
| Jan 9, 2:49 PM MST | Winter Weather Advisory | BYZ | 30 hr |
| Jan 11, 3:54 AM MST | Winter Storm Warning | BYZ | 41 hr |
| Jan 11, 3:54 AM MST | Winter Weather Advisory | BYZ | 41 hr |
| Jan 14, 2:23 AM MST | Winter Weather Advisory | BYZ | 24 hr |
| Jan 17, 3:07 AM MST | Wind Advisory | BYZ | 44 hr |
| Jan 18, 2:48 AM MST | Winter Storm Warning | BYZ | 45 hr |
| Jan 19, 5:40 AM MST | Winter Weather Advisory | BYZ | 14 hr |
| Jan 19, 1:14 PM MST | Special Weather Statement | BYZ | 3 hr |
| Jan 23, 1:41 PM MST | Wind Advisory | BYZ | 44 hr |
| Jan 25, 4:37 PM MST | Special Weather Statement | BYZ | 83 min |
| Jan 28, 3:00 PM MST | Wind Advisory | BYZ | 19 hr |
| Jan 29, 10:14 AM MST | High Wind Warning | BYZ | 25 hr |
| Feb 2, 2:51 PM MST | Winter Storm Watch | BYZ | 13 hr |
| Feb 2, 2:51 PM MST | Winter Storm Warning | BYZ | 3 days |
| Feb 4, 3:16 PM MST | Winter Weather Advisory | BYZ | 30 hr |
| Feb 6, 4:06 AM MST | Wind Advisory | BYZ | 59 hr |
| Feb 6, 3:39 PM MST | Winter Storm Watch | BYZ | 35 hr |
| Feb 7, 3:33 PM MST | Winter Storm Warning | BYZ | 42 hr |
| Feb 7, 3:33 PM MST | Winter Weather Advisory | BYZ | 42 hr |
| Feb 13, 3:21 AM MST | Wind Advisory | BYZ | 35 hr |
| Feb 14, 2:33 PM MST | Winter Weather Advisory | BYZ | 24 hr |
| Feb 15, 3:14 PM MST | Wind Advisory | BYZ | 27 hr |
| Feb 16, 2:57 AM MST | Winter Storm Warning | BYZ | 72 hr |
| Feb 17, 2:55 AM MST | Wind Advisory | BYZ | 21 hr |
| Feb 17, 2:56 AM MST | Winter Weather Advisory | BYZ | 66 hr |
| Feb 19, 2:35 AM MST | Wind Chill Advisory | BYZ | 8 hr |
| Feb 19, 3:05 PM MST | Wind Chill Advisory | BYZ | 21 hr |
| Feb 24, 2:28 PM MST | Wind Advisory | BYZ | 40 hr |
| Feb 26, 2:50 AM MST | Winter Weather Advisory | BYZ | 18 hr |
| Mar 2, 3:18 AM MST | Winter Storm Watch | BYZ | 48 hr |
| Mar 3, 3:07 AM MST | Winter Storm Warning | BYZ | 3 days |
| Mar 8, 4:33 PM MST | Wind Advisory | BYZ | 23 hr |
| Mar 24, 11:43 AM MDT | Special Weather Statement | BYZ | 107 min |
| Mar 28, 8:55 AM MDT | Special Weather Statement | BYZ | 80 min |
| Mar 31, 2:52 PM MDT | Winter Storm Watch | BYZ | 24 hr |
| Apr 1, 3:30 AM MDT | Winter Storm Warning | BYZ | 50 hr |
| Apr 4, 2:23 AM MDT | Winter Weather Advisory | BYZ | 61 hr |
| Apr 4, 2:58 PM MDT | Winter Storm Warning | BYZ | 45 hr |
| Apr 7, 8:37 PM MDT | Special Weather Statement | BYZ | 53 min |
| Apr 10, 2:58 PM MDT | Winter Storm Watch | BYZ | 36 hr |
| Apr 11, 3:15 PM MDT | Winter Storm Warning | BYZ | 48 hr |
| Apr 12, 2:36 AM MDT | Winter Weather Advisory | BYZ | 36 hr |
| Apr 22, 2:36 PM MDT | Winter Weather Advisory | BYZ | 25 hr |
| Apr 29, 10:35 AM MDT | Areal Flood Advisory | BYZ | 48 hr |
| Apr 30, 3:15 AM MDT | Winter Storm Warning | BYZ | 24 hr |
| May 6, 5:44 PM MDT | Special Weather Statement | BYZ | 31 min |
| May 6, 6:14 PM MDT | Special Weather Statement | BYZ | 46 min |
| May 9, 1:20 PM MDT | River Flood Watch | BYZ | 4 days |
| May 10, 12:21 PM MDT | River Flood Warning | BYZ | 70 hr |
| May 10, 2:19 PM MDT | Winter Storm Watch | BYZ | 13 hr |
| May 11, 2:56 AM MDT | Winter Storm Warning | BYZ | 36 hr |
| May 11, 11:15 AM MDT | Areal Flood Advisory | BYZ | 36 hr |
| May 22, 12:40 PM MDT | Flood Watch | BYZ | 35 hr |
| May 23, 11:09 AM MDT | River Flood Warning | BYZ | 5 days |
| May 24, 11:57 AM MDT | River Flood Warning | BYZ | 15 days |
| May 26, 2:21 PM MDT | Mesoscale Discussion | SPC | 114 min |
| May 30, 1:48 PM MDT | Mesoscale Discussion | SPC | 117 min |
| May 31, 12:33 PM MDT | Mesoscale Discussion | SPC | 117 min |
| May 31, 1:50 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 31, 2:38 PM MDT | Severe Thunderstorm Warning | BYZ | 52 min |
| May 31, 3:27 PM MDT | Severe Thunderstorm Warning | BYZ | 48 min |
| May 31, 4:07 PM MDT | Special Weather Statement | BYZ | 38 min |
| May 31, 5:27 PM MDT | Mesoscale Discussion | SPC | 93 min |
| May 31, 6:20 PM MDT | Special Weather Statement | BYZ | 40 min |
| May 31, 6:55 PM MDT | Special Weather Statement | BYZ | 50 min |
| Jun 4, 1:47 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jun 6, 6:27 PM MDT | Special Weather Statement | BYZ | 48 min |
| Jun 7, 7:07 AM MDT | Special Weather Statement | BYZ | 38 min |
| Jun 7, 1:20 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jun 7, 1:30 PM MDT | Special Weather Statement | BYZ | 30 min |
| Jun 10, 2:59 PM MDT | Winter Weather Advisory | BYZ | 30 hr |
| Jun 15, 2:30 PM MDT | Winter Weather Advisory | BYZ | 22 hr |
| Jun 17, 3:50 AM MDT | Flood Watch | BYZ | 59 hr |
| Jun 17, 4:02 AM MDT | Winter Weather Advisory | BYZ | 41 hr |
| Jun 21, 2:28 PM MDT | Special Weather Statement | BYZ | 47 min |
| Jun 21, 2:28 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jun 28, 6:08 PM MDT | Special Weather Statement | BYZ | 37 min |
| Jun 28, 6:30 PM MDT | Severe Thunderstorm Warning | BYZ | 30 min |
| Jul 10, 1:38 PM MDT | Special Weather Statement | BYZ | 37 min |
| Jul 10, 2:14 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 26, 1:10 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 27, 8:01 PM MDT | Special Weather Statement | BYZ | 44 min |
| Jul 28, 5:57 PM MDT | Special Weather Statement | BYZ | 48 min |
| Aug 1, 1:15 PM MDT | Special Weather Statement | BYZ | 30 min |
| Aug 2, 2:40 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 2, 5:31 PM MDT | Special Weather Statement | BYZ | 59 min |
| Aug 2, 5:58 PM MDT | Severe Thunderstorm Warning | BYZ | 50 min |
| Aug 3, 1:34 PM MDT | Special Weather Statement | BYZ | 41 min |
| Aug 3, 1:48 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Aug 3, 2:14 PM MDT | Special Weather Statement | BYZ | 46 min |
| Aug 3, 2:59 PM MDT | Special Weather Statement | BYZ | 46 min |
| Aug 3, 3:44 PM MDT | Special Weather Statement | BYZ | 46 min |
| Aug 9, 2:34 PM MDT | Heat Advisory | BYZ | 55 hr |
| Aug 9, 2:50 PM MDT | Fire Weather Watch | BYZ | 37 hr |
| Aug 11, 3:28 AM MDT | Red Flag Warning | BYZ | 42 hr |
| Aug 15, 2:27 PM MDT | Fire Weather Watch | BYZ | 25 hr |
| Aug 16, 3:06 PM MDT | Red Flag Warning | BYZ | 31 hr |
| Aug 17, 6:35 PM MDT | Special Weather Statement | BYZ | 55 min |
| Aug 24, 3:01 PM MDT | Special Weather Statement | BYZ | 59 min |
| Aug 24, 4:04 PM MDT | Special Weather Statement | BYZ | 41 min |
| Aug 26, 4:12 AM MDT | Winter Weather Advisory | BYZ | 53 hr |
| Sep 8, 3:56 PM MDT | Special Weather Statement | BYZ | 49 min |
| Sep 27, 2:50 AM MDT | Winter Weather Advisory | BYZ | 31 hr |
| Sep 30, 5:56 AM MDT | Winter Weather Advisory | BYZ | 6 hr |
| Oct 4, 3:46 AM MDT | Winter Weather Advisory | BYZ | 27 hr |
| Oct 12, 2:36 PM MDT | Winter Weather Advisory | BYZ | 30 hr |
| Nov 1, 3:24 PM MDT | Wind Advisory | BYZ | 30 hr |
| Nov 2, 2:24 PM MDT | Winter Storm Watch | BYZ | 24 hr |
| Nov 3, 2:43 PM MDT | Winter Storm Warning | BYZ | 31 hr |
| Nov 5, 2:26 PM MST | Winter Weather Advisory | BYZ | 25 hr |
| Nov 7, 9:31 AM MST | Winter Weather Advisory | BYZ | 13 hr |
| Nov 13, 3:24 PM MST | Wind Advisory | BYZ | 35 hr |
| Nov 15, 2:33 PM MST | Winter Weather Advisory | BYZ | 38 hr |
| Nov 22, 2:54 PM MST | Winter Weather Advisory | BYZ | 54 hr |
| Nov 23, 8:15 AM MST | Winter Storm Warning | BYZ | 37 hr |
| Nov 26, 3:15 AM MST | Wind Advisory | BYZ | 45 hr |
| Dec 4, 2:44 AM MST | Wind Advisory | BYZ | 26 hr |
| Dec 10, 3:08 AM MST | High Wind Watch | BYZ | 35 hr |
| Dec 11, 3:38 AM MST | High Wind Warning | BYZ | 70 hr |
| Dec 12, 7:46 AM MST | Special Weather Statement | BYZ | 29 min |
| Dec 14, 1:43 AM MST | Wind Advisory | BYZ | 38 hr |
| Dec 16, 10:57 PM MST | Special Weather Statement | BYZ | 2 hr |
| Dec 17, 2:13 AM MST | High Wind Watch | BYZ | 12 hr |
| Dec 17, 1:46 PM MST | High Wind Warning | BYZ | 50 hr |
| Dec 20, 2:42 AM MST | Wind Advisory | BYZ | 28 hr |
| Dec 25, 3:17 AM MST | Winter Weather Advisory | BYZ | 38 hr |
| Dec 28, 2:52 AM MST | Wind Advisory | BYZ | 12 hr |
| Dec 28, 2:22 PM MST | High Wind Warning | BYZ | 43 hr |
| Dec 29, 1:58 PM MST | Winter Weather Advisory | BYZ | 49 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 | 4 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 10 |
| Special Weather Statement | 30 |
| Flooding | |
| River Flood Warning | 3 |
| Flood Watch | 2 |
| River Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Warning | 13 |
| Winter Storm Watch | 8 |
| Winter Weather Advisory | 27 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 4 |
| High Wind Watch | 2 |
| Wind Advisory | 17 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.