Alert archive / Montana / Rosebud County

Weather alerts in Rosebud County, Montana, 2018

134 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Rosebud County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
134
Warnings
46
Watches
19
Advisories
22
Busiest month
June35 alerts
Busiest day
June 1, 201812 alerts

Over time

By month

Warning verification

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

Rosebud County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings321747%2886%23 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 9, 4:11 AM MSTWinter Storm WatchBYZ11 hr
Jan 9, 2:49 PM MSTWinter Storm WarningBYZ28 hr
Jan 11, 3:54 AM MSTWinter Weather AdvisoryBYZ41 hr
Jan 13, 12:27 PM MSTSpecial Weather StatementBYZ2 hr
Jan 13, 2:54 PM MSTSpecial Weather StatementBYZ3 hr
Jan 14, 2:23 AM MSTWinter Weather AdvisoryBYZ24 hr
Jan 14, 2:26 AM MSTWind Chill AdvisoryBYZ57 hr
Jan 14, 1:11 PM MSTSpecial Weather StatementBYZ19 min
Jan 14, 1:15 PM MSTSpecial Weather StatementBYZ15 min
Jan 14, 1:54 PM MSTSpecial Weather StatementBYZ81 min
Jan 19, 5:40 AM MSTWinter Weather AdvisoryBYZ14 hr
Jan 31, 2:01 PM MSTSpecial Weather StatementBYZ119 min
Feb 2, 2:51 PM MSTWinter Storm WatchBYZ13 hr
Feb 2, 2:51 PM MSTWinter Storm WarningBYZ3 days
Feb 2, 2:51 PM MSTWinter Weather AdvisoryBYZ13 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 9, 2:55 PM MSTWind Chill AdvisoryBYZ21 hr
Feb 11, 2:05 PM MSTWind Chill AdvisoryBYZ22 hr
Feb 14, 2:33 PM MSTWinter Weather AdvisoryBYZ24 hr
Feb 16, 9:22 PM MSTSpecial Weather StatementBYZ113 min
Feb 16, 11:55 PM MSTSpecial Weather StatementBYZ95 min
Feb 17, 2:56 AM MSTWinter Weather AdvisoryBYZ66 hr
Mar 2, 3:18 AM MSTWinter Storm WatchBYZ48 hr
Mar 3, 3:07 AM MSTWinter Storm WarningBYZ3 days
Mar 3, 6:46 AM MSTDense Fog AdvisoryBYZ4 hr
Mar 3, 2:34 PM MSTWinter Weather AdvisoryBYZ49 hr
Mar 3, 2:38 PM MSTDense Fog AdvisoryBYZ21 hr
Mar 4, 11:58 AM MSTSpecial Weather StatementBYZ3 hr
Mar 14, 2:49 PM MDTWinter Storm WatchBYZ12 hr
Mar 15, 2:37 AM MDTWinter Storm WarningBYZ41 hr
Mar 23, 3:13 PM MDTWinter Storm WatchBYZ36 hr
Mar 25, 2:50 AM MDTWinter Weather AdvisoryBYZ35 hr
Mar 25, 9:56 AM MDTAreal Flood WarningBYZ36 hr
Mar 30, 4:00 PM MDTSpecial Weather StatementBYZ60 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 7, 10:18 PM MDTSpecial Weather StatementBYZ117 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 23, 3:20 PM MDTWinter Weather AdvisoryBYZ15 hr
Apr 29, 12:40 PM MDTMesoscale DiscussionSPC3 hr
Apr 29, 4:29 PM MDTSevere Thunderstorm WarningBYZ41 min
May 7, 2:49 PM MDTMesoscale DiscussionSPC116 min
May 7, 4:17 PM MDTSpecial Weather StatementBYZ58 min
May 16, 10:59 PM MDTSpecial Weather StatementBYZ46 min
May 17, 6:15 PM MDTSpecial Weather StatementBYZ45 min
May 23, 2:34 PM MDTMesoscale DiscussionSPC116 min
May 23, 2:52 PM MDTSpecial Weather StatementBYZ38 min
May 23, 3:35 PM MDTSpecial Weather StatementBYZ40 min
May 23, 3:45 PM MDTSevere Thunderstorm WarningBYZ60 min
May 23, 4:03 PM MDTSevere Thunderstorm WarningBYZ57 min
May 23, 6:12 PM MDTSevere Thunderstorm WarningBYZ63 min
May 23, 6:37 PM MDTSevere Thunderstorm WarningBYZ53 min
May 24, 1:37 PM MDTRiver Flood WatchBYZ5 days
May 26, 2:21 PM MDTMesoscale DiscussionSPC114 min
May 27, 12:52 AM MDTSevere Thunderstorm WarningBYZ23 min
May 27, 12:27 PM MDTRiver Flood WarningBYZ5 days
May 29, 3:48 PM MDTSpecial Weather StatementBYZ27 min
May 31, 1:50 PM MDTSevere Thunderstorm WatchSPC8 hr
May 31, 5:27 PM MDTMesoscale DiscussionSPC93 min
May 31, 7:01 PM MDTSevere Thunderstorm WarningBYZ42 min
May 31, 7:10 PM MDTSevere Thunderstorm WarningBYZ65 min
May 31, 8:18 PM MDTMesoscale DiscussionSPC57 min
May 31, 8:41 PM MDTSevere Thunderstorm WarningBYZ64 min
Jun 1, 12:24 AM MDTSpecial Weather StatementBYZ51 min
Jun 1, 11:03 AM MDTMesoscale DiscussionSPC117 min
Jun 1, 11:14 AM MDTSevere Thunderstorm WarningBYZ61 min
Jun 1, 11:45 AM MDTSevere Thunderstorm WatchSPC6 hr
Jun 1, 12:08 PM MDTSevere Thunderstorm WarningBYZ67 min
Jun 1, 12:23 PM MDTSpecial Weather StatementBYZ37 min
Jun 1, 1:01 PM MDTSevere Thunderstorm WarningBYZ44 min
Jun 1, 3:20 PM MDTAreal Flood WarningBYZ24 hr
Jun 4, 7:02 PM MDTSevere Thunderstorm WarningBYZ34 min
Jun 6, 6:57 PM MDTSevere Thunderstorm WarningBYZ63 min
Jun 7, 1:51 PM MDTMesoscale DiscussionSPC84 min
Jun 7, 3:49 PM MDTSevere Thunderstorm WatchSPC9 hr
Jun 7, 5:28 PM MDTSevere Thunderstorm WarningBYZ47 min
Jun 7, 5:38 PM MDTSevere Thunderstorm WarningBYZ37 min
Jun 7, 5:54 PM MDTSevere Thunderstorm WarningBYZ66 min
Jun 7, 6:14 PM MDTSevere Thunderstorm WarningBYZ61 min
Jun 7, 6:41 PM MDTSevere Thunderstorm WarningBYZ49 min
Jun 8, 5:50 PM MDTSevere Thunderstorm WarningBYZ22 min
Jun 15, 5:49 PM MDTSevere Thunderstorm WarningBYZ56 min
Jun 20, 2:34 PM MDTSpecial Weather StatementBYZ56 min
Jun 21, 6:43 PM MDTMesoscale DiscussionSPC3 hr
Jun 21, 7:43 PM MDTSpecial Weather StatementBYZ47 min
Jun 21, 8:29 PM MDTSpecial Weather StatementBYZ61 min
Jun 28, 2:35 PM MDTMesoscale DiscussionSPC2 hr
Jun 28, 3:42 PM MDTTornado WatchSPC7 hr
Jun 28, 5:59 PM MDTMesoscale DiscussionSPC91 min
Jun 28, 6:35 PM MDTSevere Thunderstorm WarningBYZ55 min
Jun 28, 6:48 PM MDTSevere Thunderstorm WarningBYZ57 min
Jun 28, 7:44 PM MDTSevere Thunderstorm WarningBYZ61 min
Jun 28, 8:06 PM MDTMesoscale DiscussionSPC84 min
Jun 28, 10:18 PM MDTSevere Thunderstorm WarningBYZ57 min
Jul 2, 5:58 PM MDTMesoscale DiscussionSPC3 hr
Jul 2, 6:59 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 2, 8:49 PM MDTSevere Thunderstorm WarningBYZ56 min
Jul 2, 8:50 PM MDTMesoscale DiscussionSPC115 min
Jul 2, 9:39 PM MDTSevere Thunderstorm WarningBYZ51 min
Jul 2, 9:45 PM MDTSevere Thunderstorm WarningBYZ60 min
Jul 2, 10:23 PM MDTSevere Thunderstorm WarningBYZ52 min
Jul 3, 8:13 PM MDTMesoscale DiscussionSPC2 hr
Jul 10, 1:50 PM MDTMesoscale DiscussionSPC115 min
Jul 10, 2:14 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 10, 6:32 PM MDTMesoscale DiscussionSPC118 min
Jul 17, 3:25 AM MDTFlash Flood WatchBYZ18 hr
Jul 17, 5:51 PM MDTSpecial Weather StatementBYZ54 min
Jul 17, 6:00 PM MDTSpecial Weather StatementBYZ45 min
Jul 17, 6:52 PM MDTSpecial Weather StatementBYZ38 min
Jul 27, 5:57 PM MDTSevere Thunderstorm WarningBYZ48 min
Aug 2, 10:05 PM MDTSpecial Weather StatementBYZ55 min
Aug 3, 5:27 PM MDTSevere Thunderstorm WarningBYZ63 min
Aug 3, 6:10 PM MDTSpecial Weather StatementBYZ50 min
Aug 3, 6:28 PM MDTSevere Thunderstorm WarningBYZ62 min
Aug 9, 3:51 AM MDTExcessive Heat WarningBYZ4 days
Aug 9, 2:50 PM MDTFire Weather WatchBYZ37 hr
Aug 11, 3:28 AM MDTRed Flag WarningBYZ42 hr
Sep 15, 3:11 AM MDTRed Flag WarningBYZ18 hr
Sep 23, 8:04 AM MDTSpecial Weather StatementBYZ4 hr
Nov 15, 2:33 PM MSTWinter Weather AdvisoryBYZ38 hr
Nov 25, 4:48 AM MSTSpecial Weather StatementBYZ5 hr
Nov 29, 3:13 AM MSTWinter Storm WatchBYZ24 hr
Nov 30, 3:33 AM MSTWinter Weather AdvisoryBYZ48 hr
Dec 3, 7:39 PM MSTDense Fog AdvisoryBYZ9 hr
Dec 7, 2:12 AM MSTSpecial Weather StatementBYZ4 hr
Dec 17, 1:46 PM MSTHigh Wind WarningBYZ50 hr
Dec 18, 2:36 AM MSTHigh Wind WatchBYZ18 hr
Dec 25, 3:17 AM MSTWinter Weather AdvisoryBYZ38 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.