Alert archive / Montana / Fergus County

Weather alerts in Fergus County, Montana, 2022

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

Fergus County and its neighbors

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

Alerts
235
Warnings
42
Watches
22
Advisories
32
Busiest month
July116 alerts
Busiest day
July 5, 202231 alerts

Over time

By month

Warning verification

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

Fergus County, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings29776%1155%27 min
Flash flood warnings00

Each office's whole area, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Great Falls, MT: tornado warnings010%
NWS Great Falls, MT: severe thunderstorm warnings1706562%21670%23 min
NWS Great Falls, MT: flash flood warnings3167%540%30 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
Feb 11, 9:35 AM MSTMesoscale DiscussionSPC4 hr
Mar 7, 7:26 PM MSTSnow Squall WarningTFX64 min
Mar 7, 8:30 PM MSTSnow Squall WarningTFX30 min
Mar 10, 4:56 PM MSTSpecial Weather StatementTFX49 min
Mar 10, 5:04 PM MSTSpecial Weather StatementTFX41 min
Mar 10, 5:48 PM MSTSpecial Weather StatementTFX42 min
May 6, 8:43 PM MDTSpecial Weather StatementTFX32 min
May 7, 2:27 PM MDTSpecial Weather StatementTFX33 min
May 7, 2:41 PM MDTSpecial Weather StatementTFX34 min
May 7, 4:00 PM MDTSpecial Weather StatementTFX30 min
May 8, 8:40 PM MDTSpecial Weather StatementTFX20 min
Jun 4, 3:04 PM MDTSpecial Weather StatementTFX26 min
Jun 4, 3:31 PM MDTSpecial Weather StatementTFX29 min
Jun 4, 3:57 PM MDTSpecial Weather StatementTFX18 min
Jun 4, 5:20 PM MDTSpecial Weather StatementTFX25 min
Jun 4, 6:01 PM MDTSpecial Weather StatementTFX29 min
Jun 18, 6:33 PM MDTSpecial Weather StatementTFX27 min
Jun 18, 7:32 PM MDTSevere Thunderstorm Warning Considerable damage threatTFX28 min
Jun 18, 7:38 PM MDTSpecial Weather StatementTFX22 min
Jun 18, 8:09 PM MDTMesoscale DiscussionSPC2 hr
Jun 18, 8:35 PM MDTSpecial Weather StatementTFX25 min
Jun 18, 8:48 PM MDTSpecial Weather StatementTFX27 min
Jun 18, 9:15 PM MDTSpecial Weather StatementTFX45 min
Jun 19, 12:31 AM MDTSpecial Weather StatementTFX29 min
Jun 21, 5:47 PM MDTSpecial Weather StatementTFX28 min
Jun 23, 4:09 PM MDTSpecial Weather StatementTFX51 min
Jun 23, 4:16 PM MDTMesoscale DiscussionSPC119 min
Jun 23, 5:10 PM MDTSpecial Weather StatementTFX35 min
Jun 23, 5:49 PM MDTSpecial Weather StatementTFX26 min
Jun 23, 6:16 PM MDTSpecial Weather StatementTFX29 min
Jun 23, 8:05 PM MDTSpecial Weather StatementTFX25 min
Jun 23, 8:07 PM MDTSpecial Weather StatementTFX38 min
Jun 23, 8:30 PM MDTSpecial Weather StatementTFX30 min
Jun 23, 9:02 PM MDTSpecial Weather StatementTFX28 min
Jun 28, 2:04 PM MDTSpecial Weather StatementTFX26 min
Jun 28, 2:20 PM MDTMesoscale DiscussionSPC85 min
Jun 28, 3:45 PM MDTSevere Thunderstorm WatchSPC6 hr
Jun 28, 4:30 PM MDTSpecial Weather StatementTFX30 min
Jun 28, 5:09 PM MDTSpecial Weather StatementTFX51 min
Jun 28, 5:22 PM MDTSevere Thunderstorm WarningTFX53 min
Jun 28, 6:15 PM MDTSpecial Weather StatementTFX30 min
Jun 28, 6:16 PM MDTMesoscale DiscussionSPC119 min
Jun 28, 6:24 PM MDTAreal Flood AdvisoryTFX51 min
Jul 1, 5:33 PM MDTSpecial Weather StatementTFX27 min
Jul 2, 3:43 PM MDTMesoscale DiscussionSPC3 hr
Jul 3, 12:32 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 3, 1:50 PM MDTSpecial Weather StatementTFX25 min
Jul 3, 2:09 PM MDTMesoscale DiscussionSPC96 min
Jul 3, 2:16 PM MDTSpecial Weather StatementTFX29 min
Jul 3, 2:46 PM MDTSpecial Weather StatementTFX29 min
Jul 3, 5:02 PM MDTMesoscale DiscussionSPC88 min
Jul 4, 3:07 PM MDTSevere Thunderstorm WatchSPC9 hr
Jul 4, 5:28 PM MDTSpecial Weather StatementTFX32 min
Jul 4, 5:45 PM MDTMesoscale DiscussionSPC2 hr
Jul 4, 5:45 PM MDTSpecial Weather StatementTFX30 min
Jul 4, 5:57 PM MDTSpecial Weather StatementTFX48 min
Jul 4, 6:13 PM MDTSpecial Weather StatementTFX32 min
Jul 4, 6:14 PM MDTAreal Flood AdvisoryTFX3 hr
Jul 4, 6:24 PM MDTSevere Thunderstorm WarningTFX36 min
Jul 4, 6:40 PM MDTSevere Thunderstorm WarningTFX35 min
Jul 4, 6:50 PM MDTAreal Flood AdvisoryTFX3 hr
Jul 4, 7:01 PM MDTSpecial Weather StatementTFX44 min
Jul 4, 7:04 PM MDTSpecial Weather StatementTFX41 min
Jul 4, 7:18 PM MDTSpecial Weather StatementTFX57 min
Jul 4, 7:39 PM MDTSevere Thunderstorm WarningTFX66 min
Jul 4, 8:09 PM MDTAreal Flood AdvisoryTFX3 hr
Jul 4, 8:53 PM MDTSpecial Weather StatementTFX37 min
Jul 4, 9:53 PM MDTSpecial Weather StatementTFX52 min
Jul 5, 1:20 PM MDTMesoscale DiscussionSPC85 min
Jul 5, 1:45 PM MDTSpecial Weather StatementTFX45 min
Jul 5, 2:01 PM MDTAreal Flood AdvisoryTFX3 hr
Jul 5, 2:07 PM MDTSpecial Weather StatementTFX38 min
Jul 5, 2:22 PM MDTSpecial Weather StatementTFX23 min
Jul 5, 2:45 PM MDTSpecial Weather StatementTFX30 min
Jul 5, 2:52 PM MDTSevere Thunderstorm WarningTFX53 min
Jul 5, 3:01 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 5, 3:06 PM MDTSpecial Weather StatementTFX24 min
Jul 5, 3:29 PM MDTSpecial Weather StatementTFX31 min
Jul 5, 3:31 PM MDTSpecial Weather StatementTFX44 min
Jul 5, 3:34 PM MDTSevere Thunderstorm WarningTFX56 min
Jul 5, 3:46 PM MDTAreal Flood AdvisoryTFX3 hr
Jul 5, 3:57 PM MDTSpecial Weather StatementTFX18 min
Jul 5, 4:05 PM MDTSpecial Weather StatementTFX25 min
Jul 5, 4:23 PM MDTSpecial Weather StatementTFX37 min
Jul 5, 4:37 PM MDTSpecial Weather StatementTFX23 min
Jul 5, 5:01 PM MDTSpecial Weather StatementTFX59 min
Jul 5, 5:15 PM MDTAreal Flood AdvisoryTFX105 min
Jul 6, 1:14 PM MDTSevere Thunderstorm WarningTFX46 min
Jul 6, 1:42 PM MDTMesoscale DiscussionSPC3 hr
Jul 6, 2:24 PM MDTSpecial Weather StatementTFX36 min
Jul 6, 2:48 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 6, 3:20 PM MDTSpecial Weather StatementTFX55 min
Jul 6, 3:38 PM MDTSevere Thunderstorm WarningTFX38 min
Jul 6, 4:15 PM MDTSpecial Weather StatementTFX45 min
Jul 6, 4:53 PM MDTMesoscale DiscussionSPC2 hr
Jul 6, 4:54 PM MDTSevere Thunderstorm WarningTFX36 min
Jul 6, 4:58 PM MDTSpecial Weather StatementTFX32 min
Jul 6, 5:32 PM MDTAreal Flood AdvisoryTFX3 hr
Jul 6, 5:36 PM MDTSpecial Weather StatementTFX39 min
Jul 6, 5:48 PM MDTSevere Thunderstorm WarningTFX42 min
Jul 6, 6:33 PM MDTSevere Thunderstorm WarningTFX42 min
Jul 6, 6:42 PM MDTSpecial Weather StatementTFX63 min
Jul 6, 6:44 PM MDTAreal Flood AdvisoryTFX2 hr
Jul 6, 7:01 PM MDTMesoscale DiscussionSPC119 min
Jul 6, 7:48 PM MDTSpecial Weather StatementTFX27 min
Jul 7, 1:41 PM MDTSevere Thunderstorm WatchSPC10 hr
Jul 7, 6:12 PM MDTMesoscale DiscussionSPC2 hr
Jul 7, 6:22 PM MDTSevere Thunderstorm Warning Considerable damage threatTFX53 min
Jul 7, 6:36 PM MDTSpecial Weather StatementTFX54 min
Jul 7, 6:56 PM MDTSpecial Weather StatementTFX49 min
Jul 7, 7:08 PM MDTSevere Thunderstorm WarningTFX31 min
Jul 7, 7:26 PM MDTSpecial Weather StatementTFX64 min
Jul 7, 7:48 PM MDTSevere Thunderstorm WarningTFX25 min
Jul 7, 8:13 PM MDTSevere Thunderstorm WarningTFX45 min
Jul 7, 8:24 PM MDTSevere Thunderstorm WarningTFX51 min
Jul 7, 9:09 PM MDTSevere Thunderstorm WarningTFX51 min
Jul 8, 2:41 PM MDTMesoscale DiscussionSPC94 min
Jul 8, 3:09 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 8, 6:13 PM MDTMesoscale DiscussionSPC2 hr
Jul 8, 6:54 PM MDTSpecial Weather StatementTFX66 min
Jul 8, 7:05 PM MDTSevere Thunderstorm WarningTFX40 min
Jul 8, 7:08 PM MDTSevere Thunderstorm WarningTFX31 min
Jul 8, 7:18 PM MDTSpecial Weather StatementTFX27 min
Jul 8, 7:32 PM MDTMesoscale DiscussionSPC118 min
Jul 8, 7:45 PM MDTSpecial Weather StatementTFX30 min
Jul 8, 7:53 PM MDTSpecial Weather StatementTFX67 min
Jul 8, 8:26 PM MDTSevere Thunderstorm Warning Considerable damage threatTFX34 min
Jul 8, 11:26 PM MDTSpecial Weather StatementTFX34 min
Jul 8, 11:30 PM MDTSevere Thunderstorm WarningTFX15 min
Jul 9, 2:59 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 9, 6:12 PM MDTMesoscale DiscussionSPC3 hr
Jul 9, 6:31 PM MDTSevere Thunderstorm WarningTFX59 min
Jul 9, 7:00 PM MDTSevere Thunderstorm Warning Considerable damage threatTFX60 min
Jul 9, 7:06 PM MDTSevere Thunderstorm Warning Considerable damage threatTFX54 min
Jul 9, 8:40 PM MDTSpecial Weather StatementTFX35 min
Jul 13, 1:44 PM MDTMesoscale DiscussionSPC3 hr
Jul 13, 2:26 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 13, 3:46 PM MDTSevere Thunderstorm WarningTFX44 min
Jul 13, 4:30 PM MDTSevere Thunderstorm WarningTFX60 min
Jul 13, 5:35 PM MDTSpecial Weather StatementTFX40 min
Jul 15, 11:21 AM MDTMesoscale DiscussionSPC114 min
Jul 15, 12:31 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 15, 12:54 PM MDTSevere Thunderstorm WarningTFX66 min
Jul 15, 1:58 PM MDTMesoscale DiscussionSPC2 hr
Jul 15, 1:59 PM MDTSpecial Weather StatementTFX31 min
Jul 15, 2:21 PM MDTSpecial Weather StatementTFX24 min
Jul 15, 2:43 PM MDTSpecial Weather StatementTFX47 min
Jul 15, 5:02 PM MDTMesoscale DiscussionSPC88 min
Jul 16, 10:13 PM MDTSpecial Weather StatementTFX62 min
Jul 16, 11:15 PM MDTSpecial Weather StatementTFX60 min
Jul 17, 5:53 PM MDTSpecial Weather StatementTFX37 min
Jul 17, 6:22 PM MDTSpecial Weather StatementTFX23 min
Jul 18, 12:08 PM MDTMesoscale DiscussionSPC2 hr
Jul 18, 12:44 PM MDTSevere Thunderstorm WatchSPC8 hr
Jul 18, 12:55 PM MDTSpecial Weather StatementTFX20 min
Jul 18, 2:38 PM MDTMesoscale DiscussionSPC2 hr
Jul 29, 4:29 PM MDTMesoscale DiscussionSPC2 hr
Jul 31, 2:27 AM MDTFire Weather WatchTFX13 hr
Jul 31, 3:05 PM MDTRed Flag WarningTFX4 days
Aug 1, 9:52 PM MDTSpecial Weather StatementTFX38 min
Aug 4, 2:00 PM MDTMesoscale DiscussionSPC2 hr
Aug 4, 2:51 PM MDTSpecial Weather StatementTFX24 min
Aug 4, 3:14 PM MDTSpecial Weather StatementTFX31 min
Aug 4, 3:41 PM MDTSevere Thunderstorm WarningTFX34 min
Aug 4, 4:25 PM MDTSpecial Weather StatementTFX35 min
Aug 4, 5:07 PM MDTSpecial Weather StatementTFX23 min
Aug 4, 5:35 PM MDTSpecial Weather StatementTFX25 min
Aug 4, 6:42 PM MDTSpecial Weather StatementTFX33 min
Aug 4, 7:15 PM MDTSpecial Weather StatementTFX30 min
Aug 12, 5:52 PM MDTMesoscale DiscussionSPC83 min
Aug 12, 8:32 PM MDTSpecial Weather StatementTFX43 min
Aug 12, 9:25 PM MDTSpecial Weather StatementTFX65 min
Aug 13, 2:06 PM MDTSpecial Weather StatementTFX24 min
Aug 13, 2:39 PM MDTSpecial Weather StatementTFX36 min
Aug 15, 3:41 PM MDTSpecial Weather StatementTFX34 min
Aug 15, 4:17 PM MDTSpecial Weather StatementTFX28 min
Aug 15, 4:46 PM MDTSpecial Weather StatementTFX29 min
Aug 15, 5:17 PM MDTSpecial Weather StatementTFX28 min
Aug 15, 5:20 PM MDTSpecial Weather StatementTFX25 min
Aug 22, 10:47 PM MDTSpecial Weather StatementTFX28 min
Aug 22, 11:40 PM MDTSpecial Weather StatementTFX35 min
Aug 25, 2:44 AM MDTAreal Flood AdvisoryTFX4 hr
Aug 31, 7:06 PM MDTFire Weather WatchTFX8 hr
Sep 1, 2:42 AM MDTRed Flag WarningTFX19 hr
Sep 1, 1:07 PM MDTFire Weather WatchTFX24 hr
Sep 2, 1:00 PM MDTRed Flag WarningTFX3 days
Sep 5, 2:28 AM MDTFire Weather WatchTFX25 hr
Sep 6, 3:26 AM MDTRed Flag WarningTFX45 hr
Sep 7, 7:03 PM MDTSpecial Weather StatementTFX27 min
Sep 7, 7:31 PM MDTSpecial Weather StatementTFX29 min
Sep 8, 3:57 AM MDTSpecial Weather StatementTFX33 min
Sep 18, 11:51 PM MDTSpecial Weather StatementTFX39 min
Sep 22, 1:49 PM MDTSpecial Weather StatementTFX26 min
Oct 2, 12:47 PM MDTSpecial Weather StatementTFX88 min
Oct 11, 1:47 AM MDTSpecial Weather StatementTFX43 min
Oct 11, 2:31 AM MDTSpecial Weather StatementTFX44 min
Oct 18, 1:57 PM MDTFire Weather WatchTFX25 hr
Oct 19, 2:39 PM MDTRed Flag WarningTFX28 hr
Oct 20, 3:33 AM MDTWinter Storm WatchTFX35 hr
Oct 21, 2:32 AM MDTWinter Storm WarningTFX69 hr
Oct 21, 2:40 PM MDTWinter Weather AdvisoryTFX57 hr
Oct 25, 1:47 AM MDTHigh Wind WatchTFX36 hr
Nov 3, 2:34 AM MDTHigh Wind WatchTFX34 hr
Nov 3, 2:46 PM MDTHigh Wind WarningTFX54 hr
Nov 5, 8:08 AM MDTSpecial Weather StatementTFX52 min
Nov 6, 2:13 PM MSTWinter Weather AdvisoryTFX4 days
Nov 13, 1:19 AM MSTWinter Weather AdvisoryTFX43 hr
Nov 15, 1:11 AM MSTWinter Weather AdvisoryTFX59 hr
Nov 17, 1:14 AM MSTWind Chill AdvisoryTFX32 hr
Nov 18, 1:57 AM MSTWinter Weather AdvisoryTFX16 hr
Nov 22, 1:35 PM MSTWinter Weather AdvisoryTFX27 hr
Nov 25, 3:24 AM MSTWinter Weather AdvisoryTFX34 hr
Nov 25, 2:56 PM MSTWinter Weather AdvisoryTFX66 hr
Nov 25, 10:28 PM MSTHigh Wind WatchTFX16 hr
Nov 26, 2:35 PM MSTHigh Wind WarningTFX23 hr
Nov 30, 1:40 AM MSTWinter Weather AdvisoryTFX50 hr
Dec 1, 7:42 AM MSTWind Chill AdvisoryTFX49 hr
Dec 1, 4:42 PM MSTMesoscale DiscussionSPC4 hr
Dec 3, 2:46 PM MSTWinter Weather AdvisoryTFX45 hr
Dec 4, 2:10 PM MSTWinter Weather AdvisoryTFX57 hr
Dec 6, 2:23 PM MSTWind Chill AdvisoryTFX21 hr
Dec 6, 2:23 PM MSTWinter Weather AdvisoryTFX27 hr
Dec 10, 1:41 PM MSTWinter Weather AdvisoryTFX57 hr
Dec 16, 3:20 AM MSTWind Chill AdvisoryTFX3 days
Dec 18, 2:05 AM MSTWind Chill WatchTFX12 hr
Dec 18, 2:28 PM MSTWind Chill WarningTFX5 days
Dec 19, 2:39 PM MSTWinter Weather AdvisoryTFX44 hr
Dec 21, 10:03 PM MSTWinter Weather AdvisoryTFX19 hr
Dec 22, 2:08 AM MSTWind Chill AdvisoryTFX54 hr
Dec 23, 10:39 AM MSTWinter Weather AdvisoryTFX25 hr
Dec 24, 1:40 PM MSTHigh Wind WarningTFX19 hr
Dec 26, 1:17 AM MSTHigh Wind WarningTFX55 hr
Dec 27, 1:22 AM MSTHigh Wind WatchTFX13 hr
Dec 28, 12:43 AM MSTWinter Weather AdvisoryTFX27 hr
Dec 30, 4:44 PM MSTSpecial Weather StatementTFX61 min

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.