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

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings4175%617%36 min
Flash flood warnings00

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Billings, MT: tornado warnings220%560%23 min
NWS Billings, MT: severe thunderstorm warnings1768452%21373%23 min
NWS Billings, MT: flash flood warnings8625%786%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.

IssuedProductOfficeLasted
Jan 1, 3:24 PM MSTWinter Weather AdvisoryBYZ24 hr
Jan 9, 4:11 AM MSTWinter Storm WatchBYZ11 hr
Jan 9, 4:25 AM MSTWind AdvisoryBYZ13 hr
Jan 9, 2:49 PM MSTWinter Weather AdvisoryBYZ30 hr
Jan 11, 3:54 AM MSTWinter Storm WarningBYZ41 hr
Jan 11, 3:54 AM MSTWinter Weather AdvisoryBYZ41 hr
Jan 14, 2:23 AM MSTWinter Weather AdvisoryBYZ24 hr
Jan 17, 3:07 AM MSTWind AdvisoryBYZ44 hr
Jan 18, 2:48 AM MSTWinter Storm WarningBYZ45 hr
Jan 19, 5:40 AM MSTWinter Weather AdvisoryBYZ14 hr
Jan 19, 1:14 PM MSTSpecial Weather StatementBYZ3 hr
Jan 23, 1:41 PM MSTWind AdvisoryBYZ44 hr
Jan 25, 4:37 PM MSTSpecial Weather StatementBYZ83 min
Jan 28, 3:00 PM MSTWind AdvisoryBYZ19 hr
Jan 29, 10:14 AM MSTHigh Wind WarningBYZ25 hr
Feb 2, 2:51 PM MSTWinter Storm WatchBYZ13 hr
Feb 2, 2:51 PM MSTWinter Storm WarningBYZ3 days
Feb 4, 3:16 PM MSTWinter Weather AdvisoryBYZ30 hr
Feb 6, 4:06 AM MSTWind AdvisoryBYZ59 hr
Feb 6, 3:39 PM MSTWinter Storm WatchBYZ35 hr
Feb 7, 3:33 PM MSTWinter Storm WarningBYZ42 hr
Feb 7, 3:33 PM MSTWinter Weather AdvisoryBYZ42 hr
Feb 13, 3:21 AM MSTWind AdvisoryBYZ35 hr
Feb 14, 2:33 PM MSTWinter Weather AdvisoryBYZ24 hr
Feb 15, 3:14 PM MSTWind AdvisoryBYZ27 hr
Feb 16, 2:57 AM MSTWinter Storm WarningBYZ72 hr
Feb 17, 2:55 AM MSTWind AdvisoryBYZ21 hr
Feb 17, 2:56 AM MSTWinter Weather AdvisoryBYZ66 hr
Feb 19, 2:35 AM MSTWind Chill AdvisoryBYZ8 hr
Feb 19, 3:05 PM MSTWind Chill AdvisoryBYZ21 hr
Feb 24, 2:28 PM MSTWind AdvisoryBYZ40 hr
Feb 26, 2:50 AM MSTWinter Weather AdvisoryBYZ18 hr
Mar 2, 3:18 AM MSTWinter Storm WatchBYZ48 hr
Mar 3, 3:07 AM MSTWinter Storm WarningBYZ3 days
Mar 8, 4:33 PM MSTWind AdvisoryBYZ23 hr
Mar 24, 11:43 AM MDTSpecial Weather StatementBYZ107 min
Mar 28, 8:55 AM MDTSpecial Weather StatementBYZ80 min
Mar 31, 2:52 PM MDTWinter Storm WatchBYZ24 hr
Apr 1, 3:30 AM MDTWinter Storm WarningBYZ50 hr
Apr 4, 2:23 AM MDTWinter Weather AdvisoryBYZ61 hr
Apr 4, 2:58 PM MDTWinter Storm WarningBYZ45 hr
Apr 7, 8:37 PM MDTSpecial Weather StatementBYZ53 min
Apr 10, 2:58 PM MDTWinter Storm WatchBYZ36 hr
Apr 11, 3:15 PM MDTWinter Storm WarningBYZ48 hr
Apr 12, 2:36 AM MDTWinter Weather AdvisoryBYZ36 hr
Apr 22, 2:36 PM MDTWinter Weather AdvisoryBYZ25 hr
Apr 29, 10:35 AM MDTAreal Flood AdvisoryBYZ48 hr
Apr 30, 3:15 AM MDTWinter Storm WarningBYZ24 hr
May 6, 5:44 PM MDTSpecial Weather StatementBYZ31 min
May 6, 6:14 PM MDTSpecial Weather StatementBYZ46 min
May 9, 1:20 PM MDTRiver Flood WatchBYZ4 days
May 10, 12:21 PM MDTRiver Flood WarningBYZ70 hr
May 10, 2:19 PM MDTWinter Storm WatchBYZ13 hr
May 11, 2:56 AM MDTWinter Storm WarningBYZ36 hr
May 11, 11:15 AM MDTAreal Flood AdvisoryBYZ36 hr
May 22, 12:40 PM MDTFlood WatchBYZ35 hr
May 23, 11:09 AM MDTRiver Flood WarningBYZ5 days
May 24, 11:57 AM MDTRiver Flood WarningBYZ15 days
May 26, 2:21 PM MDTMesoscale DiscussionSPC114 min
May 30, 1:48 PM MDTMesoscale DiscussionSPC117 min
May 31, 12:33 PM MDTMesoscale DiscussionSPC117 min
May 31, 1:50 PM MDTSevere Thunderstorm WatchSPC8 hr
May 31, 2:38 PM MDTSevere Thunderstorm WarningBYZ52 min
May 31, 3:27 PM MDTSevere Thunderstorm WarningBYZ48 min
May 31, 4:07 PM MDTSpecial Weather StatementBYZ38 min
May 31, 5:27 PM MDTMesoscale DiscussionSPC93 min
May 31, 6:20 PM MDTSpecial Weather StatementBYZ40 min
May 31, 6:55 PM MDTSpecial Weather StatementBYZ50 min
Jun 4, 1:47 PM MDTMesoscale DiscussionSPC118 min
Jun 6, 6:27 PM MDTSpecial Weather StatementBYZ48 min
Jun 7, 7:07 AM MDTSpecial Weather StatementBYZ38 min
Jun 7, 1:20 PM MDTMesoscale DiscussionSPC85 min
Jun 7, 1:30 PM MDTSpecial Weather StatementBYZ30 min
Jun 10, 2:59 PM MDTWinter Weather AdvisoryBYZ30 hr
Jun 15, 2:30 PM MDTWinter Weather AdvisoryBYZ22 hr
Jun 17, 3:50 AM MDTFlood WatchBYZ59 hr
Jun 17, 4:02 AM MDTWinter Weather AdvisoryBYZ41 hr
Jun 21, 2:28 PM MDTSpecial Weather StatementBYZ47 min
Jun 21, 2:28 PM MDTMesoscale DiscussionSPC92 min
Jun 28, 6:08 PM MDTSpecial Weather StatementBYZ37 min
Jun 28, 6:30 PM MDTSevere Thunderstorm WarningBYZ30 min
Jul 10, 1:38 PM MDTSpecial Weather StatementBYZ37 min
Jul 10, 2:14 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 26, 1:10 PM MDTMesoscale DiscussionSPC3 hr
Jul 27, 8:01 PM MDTSpecial Weather StatementBYZ44 min
Jul 28, 5:57 PM MDTSpecial Weather StatementBYZ48 min
Aug 1, 1:15 PM MDTSpecial Weather StatementBYZ30 min
Aug 2, 2:40 PM MDTMesoscale DiscussionSPC2 hr
Aug 2, 5:31 PM MDTSpecial Weather StatementBYZ59 min
Aug 2, 5:58 PM MDTSevere Thunderstorm WarningBYZ50 min
Aug 3, 1:34 PM MDTSpecial Weather StatementBYZ41 min
Aug 3, 1:48 PM MDTMesoscale DiscussionSPC117 min
Aug 3, 2:14 PM MDTSpecial Weather StatementBYZ46 min
Aug 3, 2:59 PM MDTSpecial Weather StatementBYZ46 min
Aug 3, 3:44 PM MDTSpecial Weather StatementBYZ46 min
Aug 9, 2:34 PM MDTHeat AdvisoryBYZ55 hr
Aug 9, 2:50 PM MDTFire Weather WatchBYZ37 hr
Aug 11, 3:28 AM MDTRed Flag WarningBYZ42 hr
Aug 15, 2:27 PM MDTFire Weather WatchBYZ25 hr
Aug 16, 3:06 PM MDTRed Flag WarningBYZ31 hr
Aug 17, 6:35 PM MDTSpecial Weather StatementBYZ55 min
Aug 24, 3:01 PM MDTSpecial Weather StatementBYZ59 min
Aug 24, 4:04 PM MDTSpecial Weather StatementBYZ41 min
Aug 26, 4:12 AM MDTWinter Weather AdvisoryBYZ53 hr
Sep 8, 3:56 PM MDTSpecial Weather StatementBYZ49 min
Sep 27, 2:50 AM MDTWinter Weather AdvisoryBYZ31 hr
Sep 30, 5:56 AM MDTWinter Weather AdvisoryBYZ6 hr
Oct 4, 3:46 AM MDTWinter Weather AdvisoryBYZ27 hr
Oct 12, 2:36 PM MDTWinter Weather AdvisoryBYZ30 hr
Nov 1, 3:24 PM MDTWind AdvisoryBYZ30 hr
Nov 2, 2:24 PM MDTWinter Storm WatchBYZ24 hr
Nov 3, 2:43 PM MDTWinter Storm WarningBYZ31 hr
Nov 5, 2:26 PM MSTWinter Weather AdvisoryBYZ25 hr
Nov 7, 9:31 AM MSTWinter Weather AdvisoryBYZ13 hr
Nov 13, 3:24 PM MSTWind AdvisoryBYZ35 hr
Nov 15, 2:33 PM MSTWinter Weather AdvisoryBYZ38 hr
Nov 22, 2:54 PM MSTWinter Weather AdvisoryBYZ54 hr
Nov 23, 8:15 AM MSTWinter Storm WarningBYZ37 hr
Nov 26, 3:15 AM MSTWind AdvisoryBYZ45 hr
Dec 4, 2:44 AM MSTWind AdvisoryBYZ26 hr
Dec 10, 3:08 AM MSTHigh Wind WatchBYZ35 hr
Dec 11, 3:38 AM MSTHigh Wind WarningBYZ70 hr
Dec 12, 7:46 AM MSTSpecial Weather StatementBYZ29 min
Dec 14, 1:43 AM MSTWind AdvisoryBYZ38 hr
Dec 16, 10:57 PM MSTSpecial Weather StatementBYZ2 hr
Dec 17, 2:13 AM MSTHigh Wind WatchBYZ12 hr
Dec 17, 1:46 PM MSTHigh Wind WarningBYZ50 hr
Dec 20, 2:42 AM MSTWind AdvisoryBYZ28 hr
Dec 25, 3:17 AM MSTWinter Weather AdvisoryBYZ38 hr
Dec 28, 2:52 AM MSTWind AdvisoryBYZ12 hr
Dec 28, 2:22 PM MSTHigh Wind WarningBYZ43 hr
Dec 29, 1:58 PM MSTWinter Weather AdvisoryBYZ49 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 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.