Alert archive / Montana / Custer County

Weather alerts in Custer County, Montana, 2022

133 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Custer County and its neighbors

Each county as a circle sized by its count in 2022. Tap one for its archive.

Alerts
133
Warnings
39
Watches
24
Advisories
27
Busiest month
July55 alerts
Busiest day
July 5, 202218 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Custer County, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings23865%580%21 min
Flash flood warnings00

Each office's whole area, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Billings, MT: tornado warnings10100%0
NWS Billings, MT: severe thunderstorm warnings1195256%15765%29 min
NWS Billings, MT: flash flood warnings8363%5100%62 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, 12:08 AM MSTSpecial Weather StatementBYZ6 hr
Jan 1, 6:13 AM MSTSpecial Weather StatementBYZ4 hr
Jan 3, 11:33 AM MSTWinter Weather AdvisoryBYZ4 days
Jan 5, 3:22 AM MSTWind Chill AdvisoryBYZ36 hr
Jan 18, 12:18 PM MSTSpecial Weather StatementBYZ4 hr
Jan 18, 1:50 PM MSTWind Chill AdvisoryBYZ21 hr
Jan 20, 1:37 PM MSTWinter Weather AdvisoryBYZ19 hr
Jan 31, 4:41 PM MSTSpecial Weather StatementBYZ64 min
Jan 31, 5:39 PM MSTSpecial Weather StatementBYZ66 min
Feb 2, 10:33 AM MSTWind Chill AdvisoryBYZ22 hr
Feb 9, 1:54 PM MSTSpecial Weather StatementBYZ4 hr
Feb 18, 2:40 PM MSTWinter Storm WatchBYZ4 days
Feb 19, 2:58 PM MSTWinter Storm WarningBYZ48 hr
Feb 19, 2:58 PM MSTWinter Weather AdvisoryBYZ13 hr
Feb 21, 2:58 PM MSTWind Chill AdvisoryBYZ68 hr
Mar 2, 2:19 AM MSTWinter Weather AdvisoryBYZ32 hr
Mar 3, 2:16 PM MSTWinter Weather AdvisoryBYZ43 hr
Apr 2, 6:22 PM MDTSpecial Weather StatementBYZ53 min
Apr 3, 1:21 AM MDTHigh Wind WatchBYZ50 hr
Apr 4, 3:38 AM MDTHigh Wind WarningBYZ56 hr
Apr 9, 3:14 PM MDTWinter Storm WatchBYZ36 hr
Apr 11, 3:13 AM MDTBlizzard WarningBYZ3 days
Apr 13, 2:12 AM MDTWinter Weather AdvisoryBYZ25 hr
Apr 20, 3:28 AM MDTWinter Storm WatchBYZ35 hr
Apr 21, 2:43 PM MDTBlizzard WarningBYZ68 hr
Apr 23, 11:32 AM MDTMesoscale DiscussionSPC5 hr
Jun 3, 10:28 PM MDTSpecial Weather StatementBYZ62 min
Jun 11, 1:15 PM MDTMesoscale DiscussionSPC3 hr
Jun 11, 4:59 PM MDTSevere Thunderstorm WatchSPC7 hr
Jun 11, 5:22 PM MDTSevere Thunderstorm Warning Considerable damage threatBYZ53 min
Jun 13, 12:52 PM MDTSpecial Weather StatementBYZ23 min
Jun 13, 7:26 PM MDTRiver Flood WatchBYZ41 hr
Jun 15, 2:27 AM MDTHigh Wind WarningBYZ19 hr
Jun 15, 12:14 PM MDTRiver Flood WarningBYZ71 hr
Jun 16, 2:52 AM MDTHeat AdvisoryBYZ66 hr
Jun 17, 5:08 PM MDTSevere Thunderstorm WatchSPC5 hr
Jun 19, 12:07 PM MDTMesoscale DiscussionSPC2 hr
Jun 19, 1:41 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 1, 5:23 PM MDTSpecial Weather StatementBYZ52 min
Jul 1, 5:54 PM MDTSevere Thunderstorm WarningBYZ36 min
Jul 1, 6:27 PM MDTSevere Thunderstorm WarningBYZ63 min
Jul 1, 7:23 PM MDTSevere Thunderstorm WarningBYZ67 min
Jul 2, 1:20 PM MDTMesoscale DiscussionSPC115 min
Jul 2, 2:20 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 3, 3:54 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 3, 5:33 PM MDTMesoscale DiscussionSPC87 min
Jul 3, 7:53 PM MDTSevere Thunderstorm WarningBYZ67 min
Jul 3, 7:59 PM MDTSevere Thunderstorm Warning Considerable damage threatBYZ61 min
Jul 3, 7:59 PM MDTSevere Thunderstorm WarningBYZ46 min
Jul 3, 8:40 PM MDTSevere Thunderstorm Warning Considerable damage threatBYZ65 min
Jul 3, 9:41 PM MDTSevere Thunderstorm WarningBYZ34 min
Jul 4, 8:36 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 4, 9:09 PM MDTMesoscale DiscussionSPC2 hr
Jul 5, 12:46 AM MDTSevere Thunderstorm Warning Considerable damage threatBYZ44 min
Jul 5, 12:56 AM MDTMesoscale DiscussionSPC2 hr
Jul 5, 1:30 AM MDTSevere Thunderstorm WarningBYZ45 min
Jul 5, 2:08 AM MDTSevere Thunderstorm WarningBYZ52 min
Jul 5, 2:19 AM MDTSpecial Weather StatementBYZ56 min
Jul 5, 2:43 AM MDTSevere Thunderstorm Warning Considerable damage threatBYZ47 min
Jul 5, 2:55 AM MDTSevere Thunderstorm Warning Considerable damage threatBYZ65 min
Jul 5, 2:55 AM MDTMesoscale DiscussionSPC65 min
Jul 5, 3:23 AM MDTSevere Thunderstorm WatchSPC8 hr
Jul 5, 3:55 AM MDTAreal Flood AdvisoryBYZ8 hr
Jul 5, 3:58 AM MDTSevere Thunderstorm Warning Considerable damage threatBYZ77 min
Jul 5, 5:07 AM MDTSevere Thunderstorm Warning Considerable damage threatBYZ53 min
Jul 5, 5:26 AM MDTMesoscale DiscussionSPC2 hr
Jul 5, 6:04 AM MDTSevere Thunderstorm WarningBYZ56 min
Jul 5, 2:28 PM MDTFlood WatchBYZ31 hr
Jul 5, 5:47 PM MDTMesoscale DiscussionSPC118 min
Jul 6, 7:01 PM MDTMesoscale DiscussionSPC119 min
Jul 6, 10:58 PM MDTSpecial Weather StatementBYZ77 min
Jul 7, 9:23 AM MDTFlood WatchBYZ11 hr
Jul 8, 7:32 PM MDTMesoscale DiscussionSPC118 min
Jul 9, 12:17 AM MDTSevere Thunderstorm Warning Considerable damage threatBYZ28 min
Jul 9, 6:12 PM MDTMesoscale DiscussionSPC3 hr
Jul 9, 7:28 PM MDTSevere Thunderstorm WatchSPC9 hr
Jul 9, 10:57 PM MDTSevere Thunderstorm Warning Considerable damage threatBYZ63 min
Jul 9, 11:59 PM MDTSevere Thunderstorm Warning Considerable damage threatBYZ61 min
Jul 12, 2:11 AM MDTHeat AdvisoryBYZ42 hr
Jul 13, 4:44 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 13, 8:26 PM MDTSevere Thunderstorm WarningBYZ42 min
Jul 15, 3:32 PM MDTSevere Thunderstorm WatchSPC5 hr
Jul 15, 5:02 PM MDTMesoscale DiscussionSPC88 min
Jul 15, 5:43 PM MDTSevere Thunderstorm Warning Considerable damage threatBYZ62 min
Jul 15, 6:46 PM MDTSpecial Weather StatementBYZ59 min
Jul 15, 7:29 PM MDTMesoscale DiscussionSPC91 min
Jul 15, 7:41 PM MDTSpecial Weather StatementBYZ64 min
Jul 16, 11:45 AM MDTHeat AdvisoryBYZ58 hr
Jul 18, 11:13 AM MDTHigh Wind WarningBYZ27 hr
Jul 18, 12:08 PM MDTMesoscale DiscussionSPC2 hr
Jul 31, 2:22 AM MDTHeat AdvisoryBYZ42 hr
Jul 31, 3:02 AM MDTFire Weather WatchBYZ11 hr
Jul 31, 2:29 PM MDTRed Flag WarningBYZ55 hr
Aug 3, 2:09 AM MDTHeat AdvisoryBYZ42 hr
Aug 3, 2:12 AM MDTRed Flag WarningBYZ42 hr
Aug 12, 5:52 PM MDTMesoscale DiscussionSPC83 min
Aug 14, 10:29 PM MDTSpecial Weather StatementBYZ46 min
Aug 14, 11:09 PM MDTSpecial Weather StatementBYZ51 min
Aug 27, 3:28 PM MDTMesoscale DiscussionSPC92 min
Sep 2, 1:10 AM MDTFire Weather WatchBYZ12 hr
Sep 2, 12:42 PM MDTRed Flag WarningBYZ56 hr
Sep 3, 2:27 AM MDTHeat AdvisoryBYZ18 hr
Sep 5, 2:02 PM MDTHeat AdvisoryBYZ53 hr
Sep 5, 2:46 PM MDTFire Weather WatchBYZ11 hr
Sep 6, 2:05 AM MDTRed Flag WarningBYZ46 hr
Sep 22, 1:37 PM MDTMesoscale DiscussionSPC113 min
Sep 22, 3:51 PM MDTSevere Thunderstorm WarningBYZ39 min
Oct 2, 3:22 PM MDTSpecial Weather StatementBYZ38 min
Oct 2, 3:34 PM MDTMesoscale DiscussionSPC116 min
Oct 2, 4:35 PM MDTSpecial Weather StatementBYZ40 min
Oct 19, 1:29 AM MDTFire Weather WatchBYZ12 hr
Oct 19, 1:14 PM MDTRed Flag WarningBYZ32 hr
Oct 22, 2:39 AM MDTWinter Weather AdvisoryBYZ56 hr
Nov 3, 1:54 PM MDTHigh Wind WatchBYZ36 hr
Nov 4, 1:42 AM MDTHigh Wind WarningBYZ46 hr
Nov 7, 12:53 AM MSTWinter Weather AdvisoryBYZ4 days
Nov 11, 4:43 AM MSTSpecial Weather StatementBYZ2 hr
Nov 15, 8:09 PM MSTSpecial Weather StatementBYZ111 min
Nov 17, 1:28 AM MSTWind Chill AdvisoryBYZ33 hr
Dec 5, 3:00 PM MSTWinter Weather AdvisoryBYZ44 hr
Dec 6, 5:10 AM MSTSpecial Weather StatementBYZ3 hr
Dec 9, 1:30 PM MSTWinter Storm WatchBYZ62 hr
Dec 11, 2:40 PM MSTWinter Storm WarningBYZ4 days
Dec 14, 2:32 AM MSTWinter Weather AdvisoryBYZ54 hr
Dec 15, 11:34 AM MSTBlizzard WarningBYZ21 hr
Dec 18, 1:07 AM MSTWind Chill AdvisoryBYZ61 hr
Dec 20, 1:06 AM MSTWinter Weather AdvisoryBYZ64 hr
Dec 20, 2:22 PM MSTWind Chill WarningBYZ70 hr
Dec 23, 12:53 PM MSTWind Chill AdvisoryBYZ20 hr
Dec 24, 1:34 PM MSTHigh Wind WatchBYZ12 hr
Dec 25, 1:56 AM MSTWinter Weather AdvisoryBYZ13 hr
Dec 25, 3:08 AM MSTSpecial Weather StatementBYZ112 min
Dec 26, 5:16 AM MSTSpecial Weather StatementBYZ3 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 archive20212023

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.