Alert archive / Montana / Park County
Weather alerts in Park County, Montana, 2019
147 weather alerts in 2019, 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 2019. Tap one for its archive.
- Alerts
- 147
- Warnings
- 19
- Watches
- 19
- Advisories
- 52
- Busiest month
- July32 alerts
- Busiest day
- August 11, 20195 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, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 2 | 0 | 100% | 9 | 0% | |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Billings, MT: tornado warnings | 3 | 0 | 100% | 4 | 0% | |
| NWS Billings, MT: severe thunderstorm warnings | 185 | 83 | 55% | 233 | 73% | 29 min |
| NWS Billings, MT: flash flood warnings | 12 | 4 | 67% | 12 | 67% | 171 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, 3:33 AM MST | Winter Weather Advisory | BYZ | 24 hr |
| Jan 2, 3:48 AM MST | Wind Advisory | BYZ | 56 hr |
| Jan 5, 3:09 PM MST | Wind Advisory | BYZ | 43 hr |
| Jan 18, 2:34 PM MST | Wind Advisory | BYZ | 31 hr |
| Jan 22, 2:28 AM MST | Wind Advisory | BYZ | 32 hr |
| Jan 22, 2:28 AM MST | Winter Storm Watch | BYZ | 12 hr |
| Jan 22, 2:42 PM MST | Winter Storm Warning | BYZ | 39 hr |
| Jan 22, 2:42 PM MST | Winter Weather Advisory | BYZ | 39 hr |
| Jan 25, 3:24 PM MST | Wind Advisory | BYZ | 48 hr |
| Jan 31, 2:58 PM MST | Wind Advisory | BYZ | 21 hr |
| Feb 1, 4:08 AM MST | Winter Storm Watch | BYZ | 24 hr |
| Feb 2, 3:45 AM MST | Winter Storm Warning | BYZ | 48 hr |
| Feb 2, 3:45 AM MST | Winter Weather Advisory | BYZ | 41 hr |
| Feb 3, 11:46 AM MST | Wind Chill Advisory | BYZ | 5 days |
| Feb 7, 2:55 PM MST | Winter Weather Advisory | BYZ | 21 hr |
| Feb 8, 12:07 PM MST | Wind Chill Advisory | BYZ | 48 hr |
| Feb 11, 10:55 AM MST | Winter Weather Advisory | BYZ | 10 hr |
| Feb 12, 2:59 AM MST | Wind Advisory | BYZ | 24 hr |
| Feb 12, 2:04 PM MST | Winter Weather Advisory | BYZ | 40 hr |
| Feb 14, 2:40 PM MST | Winter Weather Advisory | BYZ | 25 hr |
| Feb 19, 5:23 AM MST | Special Weather Statement | BYZ | 4 hr |
| Feb 22, 3:06 AM MST | Winter Storm Watch | BYZ | 48 hr |
| Feb 23, 1:13 AM MST | Special Weather Statement | BYZ | 5 hr |
| Feb 23, 2:36 AM MST | Wind Advisory | BYZ | 7 hr |
| Feb 23, 3:00 AM MST | Winter Storm Warning | BYZ | 6 days |
| Feb 23, 3:00 AM MST | Winter Weather Advisory | BYZ | 6 days |
| Feb 24, 4:44 PM MST | Mesoscale Discussion | SPC | 6 hr |
| Mar 1, 1:14 PM MST | Wind Chill Advisory | BYZ | 70 hr |
| Mar 1, 6:41 PM MST | Special Weather Statement | BYZ | 79 min |
| Mar 2, 3:10 PM MST | Wind Chill Warning | BYZ | 44 hr |
| Mar 4, 2:59 PM MST | Wind Chill Advisory | BYZ | 19 hr |
| Mar 8, 2:55 AM MST | Winter Weather Advisory | BYZ | 31 hr |
| Mar 11, 2:35 PM MDT | Wind Advisory | BYZ | 19 hr |
| Mar 12, 3:44 PM MDT | Winter Weather Advisory | BYZ | 35 hr |
| Mar 25, 9:25 PM MDT | Areal Flood Warning | BYZ | 42 hr |
| Mar 26, 3:30 AM MDT | Winter Storm Watch | BYZ | 36 hr |
| Mar 26, 3:03 PM MDT | Winter Storm Warning | BYZ | 59 hr |
| Mar 27, 3:24 AM MDT | Winter Weather Advisory | BYZ | 47 hr |
| Apr 7, 3:00 PM MDT | Winter Storm Watch | BYZ | 37 hr |
| Apr 8, 4:50 PM MDT | Winter Storm Warning | BYZ | 58 hr |
| Apr 8, 4:50 PM MDT | Winter Weather Advisory | BYZ | 51 hr |
| Apr 28, 3:20 AM MDT | Wind Advisory | BYZ | 11 hr |
| Apr 29, 4:00 AM MDT | Winter Storm Warning | BYZ | 54 hr |
| Apr 29, 4:00 AM MDT | Winter Weather Advisory | BYZ | 54 hr |
| May 14, 1:07 PM MDT | Special Weather Statement | BYZ | 53 min |
| May 15, 2:14 PM MDT | Flood Watch | BYZ | 61 hr |
| May 20, 4:06 AM MDT | Winter Storm Watch | BYZ | 24 hr |
| May 21, 3:46 AM MDT | Winter Storm Warning | BYZ | 47 hr |
| May 26, 3:15 AM MDT | Winter Storm Watch | BYZ | 10 hr |
| May 26, 1:08 PM MDT | Winter Storm Warning | BYZ | 46 hr |
| Jun 2, 4:10 PM MDT | Special Weather Statement | BYZ | 50 min |
| Jun 6, 1:54 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 6, 2:34 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 6, 3:57 PM MDT | Wind Advisory | BYZ | 4 hr |
| Jun 6, 8:20 PM MDT | Special Weather Statement | BYZ | 4 hr |
| Jun 7, 3:32 AM MDT | Winter Weather Advisory | BYZ | 41 hr |
| Jun 13, 3:14 PM MDT | Special Weather Statement | BYZ | 46 min |
| Jun 20, 4:15 AM MDT | Winter Weather Advisory | BYZ | 29 hr |
| Jun 25, 2:36 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 1:48 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Jun 26, 2:16 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 26, 4:21 PM MDT | Special Weather Statement | BYZ | 39 min |
| Jun 26, 6:03 PM MDT | Mesoscale Discussion | SPC | 57 min |
| Jun 28, 2:36 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jul 1, 3:11 PM MDT | Special Weather Statement | BYZ | 49 min |
| Jul 1, 3:28 PM MDT | Special Weather Statement | BYZ | 32 min |
| Jul 2, 2:25 PM MDT | Special Weather Statement | BYZ | 50 min |
| Jul 2, 3:05 PM MDT | Special Weather Statement | BYZ | 40 min |
| Jul 3, 10:35 AM MDT | Special Weather Statement | BYZ | 40 min |
| Jul 4, 4:59 PM MDT | Special Weather Statement | BYZ | 31 min |
| Jul 7, 1:44 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 2:58 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 7, 6:27 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 12:53 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 11, 1:44 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 3:58 PM MDT | Special Weather Statement | BYZ | 47 min |
| Jul 12, 4:44 PM MDT | Special Weather Statement | BYZ | 46 min |
| Jul 12, 6:24 PM MDT | Special Weather Statement | BYZ | 51 min |
| Jul 12, 7:13 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 1:06 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jul 13, 1:45 PM MDT | Special Weather Statement | BYZ | 45 min |
| Jul 14, 2:10 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 14, 4:44 PM MDT | Special Weather Statement | BYZ | 46 min |
| Jul 14, 5:16 PM MDT | Severe Thunderstorm Warning | BYZ | 44 min |
| Jul 15, 1:36 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 15, 3:19 PM MDT | Special Weather Statement | BYZ | 41 min |
| Jul 16, 12:56 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Jul 16, 1:28 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 22, 6:56 PM MDT | Special Weather Statement | BYZ | 34 min |
| Jul 23, 4:13 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 5:13 PM MDT | Special Weather Statement | BYZ | 47 min |
| Jul 24, 3:09 PM MDT | Special Weather Statement | BYZ | 36 min |
| Jul 27, 5:09 PM MDT | Special Weather Statement | BYZ | 51 min |
| Jul 27, 5:54 PM MDT | Special Weather Statement | BYZ | 51 min |
| Jul 30, 8:38 PM MDT | Special Weather Statement | BYZ | 22 min |
| Jul 30, 8:59 PM MDT | Special Weather Statement | BYZ | 31 min |
| Aug 1, 2:02 PM MDT | Special Weather Statement | BYZ | 58 min |
| Aug 2, 7:09 PM MDT | Special Weather Statement | BYZ | 36 min |
| Aug 5, 5:34 PM MDT | Special Weather Statement | BYZ | 41 min |
| Aug 5, 9:45 PM MDT | Special Weather Statement | BYZ | 45 min |
| Aug 9, 3:02 PM MDT | Special Weather Statement | BYZ | 43 min |
| Aug 10, 12:44 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Aug 10, 3:04 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 10, 3:07 PM MDT | Special Weather Statement | BYZ | 53 min |
| Aug 10, 4:53 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 11:33 AM MDT | Mesoscale Discussion | SPC | 87 min |
| Aug 11, 12:34 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 11, 1:32 PM MDT | Special Weather Statement | BYZ | 43 min |
| Aug 11, 2:15 PM MDT | Severe Thunderstorm Warning | BYZ | 45 min |
| Aug 11, 2:43 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Aug 15, 7:31 PM MDT | Special Weather Statement | BYZ | 29 min |
| Sep 3, 9:30 AM MDT | Red Flag Warning | BYZ | 36 hr |
| Sep 10, 2:45 PM MDT | Winter Weather Advisory | BYZ | 36 hr |
| Sep 19, 3:49 AM MDT | Winter Weather Advisory | BYZ | 31 hr |
| Sep 20, 10:53 AM MDT | Winter Storm Warning | BYZ | 25 hr |
| Sep 26, 2:10 PM MDT | Winter Storm Watch | BYZ | 38 hr |
| Sep 27, 2:54 PM MDT | Winter Storm Warning | BYZ | 48 hr |
| Sep 28, 4:18 AM MDT | Winter Weather Advisory | BYZ | 34 hr |
| Oct 4, 2:26 PM MDT | Winter Weather Advisory | BYZ | 13 hr |
| Oct 6, 1:56 PM MDT | Winter Storm Watch | BYZ | 49 hr |
| Oct 7, 3:19 AM MDT | Wind Advisory | BYZ | 30 hr |
| Oct 8, 4:02 AM MDT | Winter Storm Warning | BYZ | 47 hr |
| Oct 9, 4:52 AM MDT | Mesoscale Discussion | SPC | 4 hr |
| Oct 22, 3:04 AM MDT | Wind Advisory | BYZ | 19 hr |
| Oct 23, 2:48 PM MDT | Wind Advisory | BYZ | 57 hr |
| Oct 27, 2:43 PM MDT | Winter Weather Advisory | BYZ | 39 hr |
| Oct 30, 4:10 AM MDT | Wind Advisory | BYZ | 32 hr |
| Nov 5, 3:10 AM MST | Winter Weather Advisory | BYZ | 32 hr |
| Nov 8, 2:39 PM MST | Winter Weather Advisory | BYZ | 54 hr |
| Nov 9, 2:09 AM MST | Wind Advisory | BYZ | 9 hr |
| Nov 10, 2:12 PM MST | Special Weather Statement | BYZ | 93 min |
| Nov 12, 2:56 AM MST | Wind Advisory | BYZ | 14 hr |
| Nov 15, 3:18 AM MST | High Wind Watch | BYZ | 35 hr |
| Nov 16, 2:10 PM MST | Wind Advisory | BYZ | 30 hr |
| Nov 21, 1:25 PM MST | High Wind Watch | BYZ | 38 hr |
| Nov 23, 3:33 AM MST | Wind Advisory | BYZ | 38 hr |
| Nov 27, 10:22 AM MST | Winter Storm Warning | BYZ | 3 days |
| Nov 27, 10:22 AM MST | Winter Weather Advisory | BYZ | 3 days |
| Nov 30, 2:36 PM MST | Winter Weather Advisory | BYZ | 23 hr |
| Dec 1, 2:06 PM MST | Wind Advisory | BYZ | 68 hr |
| Dec 6, 8:39 PM MST | Wind Advisory | BYZ | 20 hr |
| Dec 10, 1:23 PM MST | Wind Advisory | BYZ | 24 hr |
| Dec 11, 3:28 AM MST | Winter Storm Watch | BYZ | 10 hr |
| Dec 11, 1:35 PM MST | Winter Storm Warning | BYZ | 49 hr |
| Dec 16, 2:30 AM MST | Wind Advisory | BYZ | 58 hr |
| Dec 19, 2:14 AM MST | Wind Advisory | BYZ | 70 hr |
| Dec 31, 3:31 AM MST | High Wind Warning | BYZ | 41 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 | 2 |
| Severe Thunderstorm Watch | 6 |
| Mesoscale Discussion | 21 |
| Special Weather Statement | 36 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flood Watch | 1 |
| Winter | |
| Winter Storm Warning | 13 |
| Winter Storm Watch | 10 |
| Winter Weather Advisory | 24 |
| Cold | |
| Wind Chill Warning | 1 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 2 |
| Wind Advisory | 24 |
| Fire | |
| Red Flag Warning | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.