Alert archive / Montana / Park County
Weather alerts in Park County, Montana, 2010
110 weather alerts in 2010, 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 2010. Tap one for its archive.
- Alerts
- 110
- Warnings
- 39
- Watches
- 19
- Advisories
- 29
- Busiest month
- July18 alerts
- Busiest day
- June 30, 20107 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, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 14 | 7 | 50% | 14 | 64% | 21 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Billings, MT: tornado warnings | 31 | 8 | 74% | 16 | 44% | 16 min |
| NWS Billings, MT: severe thunderstorm warnings | 168 | 68 | 60% | 200 | 67% | 22 min |
| NWS Billings, MT: flash flood warnings | 17 | 3 | 82% | 8 | 50% | 73 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 3, 3:15 PM MST | Winter Storm Watch | BYZ | 12 hr |
| Jan 4, 3:33 AM MST | Winter Storm Warning | BYZ | 53 hr |
| Jan 6, 8:57 PM MST | Wind Chill Advisory | BYZ | 14 hr |
| Jan 8, 9:17 AM MST | Wind Advisory | BYZ | 23 hr |
| Jan 14, 2:56 PM MST | Wind Advisory | BYZ | 38 hr |
| Jan 21, 3:40 AM MST | Winter Storm Watch | BYZ | 48 hr |
| Jan 21, 3:09 PM MST | Winter Storm Warning | BYZ | 4 days |
| Feb 7, 7:26 AM MST | Winter Weather Advisory | BYZ | 5 hr |
| Feb 19, 9:50 AM MST | Winter Storm Warning | BYZ | 18 hr |
| Feb 19, 9:50 AM MST | Winter Weather Advisory | BYZ | 18 hr |
| Mar 18, 3:58 PM MDT | Winter Weather Advisory | BYZ | 21 hr |
| Mar 20, 3:18 PM MDT | Wind Advisory | BYZ | 23 hr |
| Mar 28, 3:28 AM MDT | Wind Advisory | BYZ | 31 hr |
| Mar 29, 10:03 AM MDT | High Wind Warning | BYZ | 18 hr |
| Mar 29, 10:56 AM MDT | Red Flag Warning | BYZ | 13 hr |
| Mar 29, 11:55 PM MDT | Winter Storm Warning | BYZ | 28 hr |
| Mar 30, 3:16 PM MDT | Winter Weather Advisory | BYZ | 13 hr |
| Mar 31, 4:05 PM MDT | Winter Storm Warning | BYZ | 29 hr |
| Mar 31, 4:05 PM MDT | Winter Weather Advisory | BYZ | 41 hr |
| Apr 5, 4:08 PM MDT | Winter Weather Advisory | BYZ | 35 hr |
| Apr 7, 3:07 PM MDT | Wind Advisory | BYZ | 28 hr |
| Apr 12, 3:42 PM MDT | Winter Storm Warning | BYZ | 24 hr |
| Apr 12, 3:42 PM MDT | Winter Weather Advisory | BYZ | 29 hr |
| Apr 13, 11:18 PM MDT | Wind Advisory | BYZ | 15 hr |
| Apr 28, 4:27 AM MDT | Winter Storm Watch | BYZ | 24 hr |
| Apr 28, 8:38 PM MDT | Winter Storm Warning | BYZ | 53 hr |
| Apr 29, 3:21 PM MDT | Winter Weather Advisory | BYZ | 25 hr |
| May 1, 3:37 PM MDT | High Wind Watch | BYZ | 47 hr |
| May 3, 4:12 AM MDT | High Wind Warning | BYZ | 41 hr |
| May 4, 4:08 PM MDT | Winter Storm Watch | BYZ | 11 hr |
| May 5, 3:36 AM MDT | Winter Storm Warning | BYZ | 42 hr |
| May 5, 3:28 PM MDT | Winter Weather Advisory | BYZ | 36 hr |
| May 11, 2:59 PM MDT | Winter Storm Warning | BYZ | 33 hr |
| Jun 4, 9:04 AM MDT | River Flood Watch | BYZ | 49 hr |
| Jun 5, 8:12 AM MDT | River Flood Warning | BYZ | 3 days |
| Jun 5, 12:20 PM MDT | Areal Flood Warning | BYZ | 21 hr |
| Jun 6, 10:42 AM MDT | Flood Watch | BYZ | 49 hr |
| Jun 15, 12:27 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 2:19 PM MDT | Severe Thunderstorm Warning | BYZ | 26 min |
| Jun 16, 12:29 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jun 16, 1:59 PM MDT | Special Weather Statement | BYZ | 61 min |
| Jun 16, 2:57 PM MDT | Wind Advisory | BYZ | 31 hr |
| Jun 20, 2:44 PM MDT | Severe Thunderstorm Warning | BYZ | 46 min |
| Jun 30, 1:28 PM MDT | Mesoscale Discussion | SPC | 62 min |
| Jun 30, 1:58 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 30, 2:41 PM MDT | Severe Thunderstorm Warning | BYZ | 64 min |
| Jun 30, 3:15 PM MDT | Severe Thunderstorm Warning | BYZ | 43 min |
| Jun 30, 3:19 PM MDT | Severe Thunderstorm Warning | BYZ | 56 min |
| Jun 30, 4:18 PM MDT | Severe Thunderstorm Warning | BYZ | 57 min |
| Jun 30, 4:55 PM MDT | Severe Thunderstorm Warning | BYZ | 65 min |
| Jul 1, 10:27 AM MDT | Special Weather Statement | BYZ | 63 min |
| Jul 1, 10:40 AM MDT | Severe Thunderstorm Warning | BYZ | 49 min |
| Jul 1, 12:45 PM MDT | Mesoscale Discussion | SPC | 60 min |
| Jul 1, 1:37 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 1, 2:20 PM MDT | Severe Thunderstorm Warning | BYZ | 55 min |
| Jul 1, 3:15 PM MDT | Severe Thunderstorm Warning | BYZ | 60 min |
| Jul 1, 4:57 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Jul 2, 1:03 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jul 2, 1:39 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 2, 5:02 PM MDT | Mesoscale Discussion | SPC | 58 min |
| Jul 9, 5:02 PM MDT | Special Weather Statement | BYZ | 58 min |
| Jul 21, 4:50 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Jul 27, 5:00 PM MDT | Severe Thunderstorm Warning | BYZ | 30 min |
| Jul 31, 12:53 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Jul 31, 1:19 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 31, 2:39 PM MDT | Special Weather Statement | BYZ | 66 min |
| Jul 31, 2:58 PM MDT | Severe Thunderstorm Warning | BYZ | 54 min |
| Jul 31, 5:02 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jul 31, 6:07 PM MDT | Severe Thunderstorm Warning | BYZ | 53 min |
| Jul 31, 6:59 PM MDT | Severe Thunderstorm Warning | BYZ | 61 min |
| Aug 3, 2:56 PM MDT | Special Weather Statement | BYZ | 34 min |
| Aug 6, 2:30 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Aug 6, 3:03 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 6, 6:36 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Aug 7, 1:41 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 8, 4:39 PM MDT | Special Weather Statement | BYZ | 76 min |
| Aug 9, 3:54 PM MDT | Mesoscale Discussion | SPC | 66 min |
| Aug 10, 1:40 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 22, 3:52 AM MDT | Red Flag Warning | BYZ | 14 hr |
| Aug 24, 3:43 PM MDT | Fire Weather Watch | BYZ | 24 hr |
| Aug 25, 3:42 PM MDT | Red Flag Warning | BYZ | 47 hr |
| Aug 27, 5:01 AM MDT | Special Weather Statement | BYZ | 59 min |
| Sep 14, 3:49 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Oct 23, 1:56 PM MDT | Winter Storm Watch | BYZ | 15 hr |
| Oct 24, 4:56 AM MDT | Winter Storm Warning | BYZ | 40 hr |
| Nov 7, 3:19 AM MST | Winter Storm Watch | BYZ | 12 hr |
| Nov 7, 3:47 PM MST | Winter Storm Warning | BYZ | 35 hr |
| Nov 8, 3:33 AM MST | Winter Weather Advisory | BYZ | 43 hr |
| Nov 14, 3:38 PM MST | Winter Weather Advisory | BYZ | 19 hr |
| Nov 15, 12:17 AM MST | Winter Storm Warning | BYZ | 21 hr |
| Nov 15, 3:41 AM MST | High Wind Watch | BYZ | 12 hr |
| Nov 15, 3:55 PM MST | High Wind Warning | BYZ | 26 hr |
| Nov 16, 3:56 AM MST | Winter Storm Warning | BYZ | 12 hr |
| Nov 17, 9:29 PM MST | Wind Advisory | BYZ | 14 hr |
| Nov 18, 4:46 AM MST | Winter Storm Watch | BYZ | 11 hr |
| Nov 18, 2:08 PM MST | Wind Advisory | BYZ | 3 hr |
| Nov 18, 3:52 PM MST | Winter Storm Warning | BYZ | 60 hr |
| Nov 18, 3:52 PM MST | Winter Weather Advisory | BYZ | 60 hr |
| Nov 22, 3:58 AM MST | Winter Storm Watch | BYZ | 7 hr |
| Nov 22, 11:02 AM MST | Winter Storm Warning | BYZ | 41 hr |
| Nov 22, 3:30 PM MST | Winter Weather Advisory | BYZ | 4 days |
| Nov 25, 3:47 AM MST | Blizzard Warning | BYZ | 47 hr |
| Nov 29, 3:37 PM MST | Wind Advisory | BYZ | 44 hr |
| Dec 2, 3:50 AM MST | Winter Weather Advisory | BYZ | 30 hr |
| Dec 12, 3:09 AM MST | Wind Advisory | BYZ | 24 hr |
| Dec 19, 3:57 AM MST | Winter Weather Advisory | BYZ | 31 hr |
| Dec 27, 10:12 AM MST | Wind Advisory | BYZ | 41 hr |
| Dec 28, 4:02 AM MST | Winter Storm Watch | BYZ | 24 hr |
| Dec 29, 3:49 AM MST | Winter Storm Warning | BYZ | 59 hr |
| Dec 29, 3:49 AM MST | Winter Weather Advisory | BYZ | 59 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 archive20092011
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.