Alert archive / Montana / Rosebud County

Weather alerts in Rosebud County, Montana, 2019

152 weather alerts in 2019, 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 2019. Tap one for its archive.

Alerts: 152
Warnings: 41
Watches: 22
Advisories: 27
Busiest month: July44 alerts
Busiest day: July 8, 20198 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, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	28	9	68%	20	50%	23 min
Flash flood warnings	1	0	100%	0

Each office's whole area, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Billings, MT: tornado warnings	3	0	100%	4	0%
NWS Billings, MT: severe thunderstorm warnings	185	83	55%	233	73%	29 min
NWS Billings, MT: flash flood warnings	12	4	67%	12	67%	171 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 17, 12:24 AM MST	Dense Fog Advisory	BYZ	6 hr
Jan 20, 2:53 PM MST	Winter Weather Advisory	BYZ	35 hr
Jan 21, 3:15 AM MST	Winter Storm Warning	BYZ	23 hr
Jan 21, 8:48 AM MST	Winter Weather Advisory	BYZ	6 hr
Jan 22, 2:42 PM MST	Winter Weather Advisory	BYZ	39 hr
Jan 25, 3:24 PM MST	High Wind Warning	BYZ	59 hr
Jan 26, 3:20 AM MST	High Wind Watch	BYZ	23 hr
Feb 1, 4:08 AM MST	Winter Storm Watch	BYZ	24 hr
Feb 2, 3:45 AM MST	Winter Storm Warning	BYZ	48 hr
Feb 2, 3:45 AM MST	Winter Weather Advisory	BYZ	41 hr
Feb 3, 11:46 AM MST	Wind Chill Advisory	BYZ	5 days
Feb 8, 12:07 PM MST	Wind Chill Advisory	BYZ	48 hr
Feb 12, 2:04 PM MST	Winter Weather Advisory	BYZ	40 hr
Feb 14, 2:40 PM MST	Winter Weather Advisory	BYZ	25 hr
Feb 15, 3:32 PM MST	Winter Storm Watch	BYZ	12 hr
Feb 16, 3:05 AM MST	Winter Weather Advisory	BYZ	32 hr
Feb 22, 3:06 AM MST	Winter Storm Watch	BYZ	48 hr
Feb 23, 3:00 AM MST	Winter Storm Warning	BYZ	6 days
Feb 23, 3:00 AM MST	Winter Weather Advisory	BYZ	6 days
Feb 23, 3:12 PM MST	Wind Chill Advisory	BYZ	20 hr
Feb 24, 4:44 PM MST	Mesoscale Discussion	SPC	6 hr
Mar 1, 1:14 PM MST	Wind Chill Advisory	BYZ	70 hr
Mar 1, 6:41 PM MST	Special Weather Statement	BYZ	79 min
Mar 2, 3:10 PM MST	Wind Chill Warning	BYZ	44 hr
Mar 4, 2:59 PM MST	Wind Chill Advisory	BYZ	19 hr
Mar 7, 3:28 AM MST	Winter Storm Watch	BYZ	23 hr
Mar 8, 2:55 AM MST	Winter Weather Advisory	BYZ	31 hr
Mar 12, 2:05 AM MDT	Winter Storm Watch	BYZ	14 hr
Mar 12, 3:44 PM MDT	Winter Storm Warning	BYZ	35 hr
Mar 12, 3:44 PM MDT	Winter Weather Advisory	BYZ	35 hr
Mar 21, 8:07 PM MDT	Areal Flood Warning	BYZ	39 hr
Apr 8, 4:50 PM MDT	Winter Weather Advisory	BYZ	51 hr
Apr 29, 4:00 AM MDT	Winter Weather Advisory	BYZ	54 hr
May 5, 7:58 AM MDT	Special Weather Statement	BYZ	4 hr
May 14, 5:00 PM MDT	Mesoscale Discussion	SPC	90 min
May 20, 2:43 PM MDT	Flood Watch	BYZ	48 hr
May 28, 2:53 PM MDT	River Flood Watch	BYZ	19 hr
May 29, 10:09 AM MDT	River Flood Warning	BYZ	4 days
Jun 9, 10:00 PM MDT	River Flood Warning	BYZ	32 hr
Jun 14, 12:21 PM MDT	Mesoscale Discussion	SPC	114 min
Jun 18, 4:18 PM MDT	Special Weather Statement	BYZ	27 min
Jun 18, 4:45 PM MDT	Special Weather Statement	BYZ	45 min
Jun 18, 5:30 PM MDT	Special Weather Statement	BYZ	45 min
Jun 20, 3:27 PM MDT	Mesoscale Discussion	SPC	63 min
Jun 20, 4:38 PM MDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 20, 8:38 PM MDT	Special Weather Statement	BYZ	67 min
Jun 20, 10:17 PM MDT	Special Weather Statement	BYZ	58 min
Jun 25, 2:36 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 25, 5:27 PM MDT	Severe Thunderstorm Warning	BYZ	63 min
Jun 26, 1:48 PM MDT	Mesoscale Discussion	SPC	117 min
Jun 26, 2:16 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 26, 5:41 PM MDT	Severe Thunderstorm Warning	BYZ	49 min
Jun 26, 6:03 PM MDT	Mesoscale Discussion	SPC	57 min
Jun 26, 6:24 PM MDT	Severe Thunderstorm Warning	BYZ	51 min
Jun 27, 5:28 PM MDT	Mesoscale Discussion	SPC	62 min
Jun 27, 8:45 PM MDT	Severe Thunderstorm Warning	BYZ	62 min
Jun 30, 4:15 PM MDT	Severe Thunderstorm Warning	BYZ	60 min
Jun 30, 4:34 PM MDT	Mesoscale Discussion	SPC	86 min
Jun 30, 5:21 PM MDT	Special Weather Statement	BYZ	39 min
Jun 30, 6:25 PM MDT	Severe Thunderstorm Warning	BYZ	43 min
Jun 30, 7:52 PM MDT	Flash Flood Warning	BYZ	4 hr
Jul 1, 4:40 PM MDT	Mesoscale Discussion	SPC	95 min
Jul 1, 5:36 PM MDT	Severe Thunderstorm Warning	BYZ	39 min
Jul 1, 6:11 PM MDT	Severe Thunderstorm Warning	BYZ	17 min
Jul 1, 6:18 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 1, 7:01 PM MDT	Severe Thunderstorm Warning	BYZ	44 min
Jul 1, 7:43 PM MDT	Severe Thunderstorm Warning	BYZ	46 min
Jul 2, 1:32 PM MDT	Severe Thunderstorm Warning	BYZ	43 min
Jul 2, 1:33 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 3, 7:07 PM MDT	Severe Thunderstorm Warning	BYZ	38 min
Jul 5, 9:27 AM MDT	Flash Flood Watch	BYZ	14 hr
Jul 6, 9:50 PM MDT	Severe Thunderstorm Warning	BYZ	40 min
Jul 7, 2:58 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 7, 6:33 PM MDT	Special Weather Statement	BYZ	12 min
Jul 7, 6:47 PM MDT	Severe Thunderstorm Warning	BYZ	58 min
Jul 7, 6:51 PM MDT	Severe Thunderstorm Warning	BYZ	54 min
Jul 7, 10:54 PM MDT	Special Weather Statement	BYZ	51 min
Jul 8, 3:21 AM MDT	Flash Flood Watch	BYZ	24 hr
Jul 8, 12:53 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 8, 1:25 PM MDT	Severe Thunderstorm Watch	SPC	10 hr
Jul 8, 5:24 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 8, 6:09 PM MDT	Special Weather Statement	BYZ	51 min
Jul 8, 6:23 PM MDT	Severe Thunderstorm Warning	BYZ	52 min
Jul 8, 7:13 PM MDT	Severe Thunderstorm Warning	BYZ	62 min
Jul 8, 11:01 PM MDT	Special Weather Statement	BYZ	119 min
Jul 11, 7:29 PM MDT	Severe Thunderstorm Warning	BYZ	46 min
Jul 11, 9:05 PM MDT	Special Weather Statement	BYZ	40 min
Jul 12, 7:13 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 12, 11:14 PM MDT	Special Weather Statement	BYZ	46 min
Jul 12, 11:59 PM MDT	Special Weather Statement	BYZ	46 min
Jul 13, 4:10 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 13, 7:31 PM MDT	Special Weather Statement	BYZ	44 min
Jul 13, 8:21 PM MDT	Severe Thunderstorm Warning	BYZ	39 min
Jul 14, 2:48 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 14, 6:15 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 14, 8:40 PM MDT	Special Weather Statement	BYZ	50 min
Jul 16, 12:56 PM MDT	Mesoscale Discussion	SPC	94 min
Jul 16, 1:28 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 16, 4:30 PM MDT	Severe Thunderstorm Warning	BYZ	60 min
Jul 16, 6:29 PM MDT	Mesoscale Discussion	SPC	91 min
Jul 30, 2:55 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 30, 4:52 PM MDT	Mesoscale Discussion	SPC	83 min
Jul 30, 5:08 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 1, 6:09 PM MDT	Areal Flood Advisory	BYZ	3 hr
Aug 1, 7:27 PM MDT	Special Weather Statement	BYZ	48 min
Aug 1, 8:21 PM MDT	Areal Flood Advisory	BYZ	3 hr
Aug 4, 3:27 AM MDT	Special Weather Statement	BYZ	48 min
Aug 8, 7:01 PM MDT	Special Weather Statement	BYZ	29 min
Aug 10, 12:44 PM MDT	Mesoscale Discussion	SPC	91 min
Aug 10, 3:04 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 10, 4:53 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 8:34 PM MDT	Mesoscale Discussion	SPC	86 min
Aug 11, 10:16 AM MDT	Special Weather Statement	BYZ	44 min
Aug 11, 11:14 AM MDT	Special Weather Statement	BYZ	46 min
Aug 11, 12:15 PM MDT	Mesoscale Discussion	SPC	90 min
Aug 11, 1:59 PM MDT	Tornado Watch	SPC	10 hr
Aug 11, 5:54 PM MDT	Mesoscale Discussion	SPC	66 min
Aug 11, 6:30 PM MDT	Severe Thunderstorm Warning	BYZ	60 min
Aug 11, 7:16 PM MDT	Severe Thunderstorm Warning	BYZ	59 min
Aug 11, 8:02 PM MDT	Severe Thunderstorm Warning	BYZ	58 min
Aug 11, 8:45 PM MDT	Mesoscale Discussion	SPC	60 min
Aug 11, 8:53 PM MDT	Severe Thunderstorm Warning	BYZ	52 min
Aug 14, 4:20 PM MDT	Special Weather Statement	BYZ	40 min
Aug 14, 4:37 PM MDT	Severe Thunderstorm Warning	BYZ	38 min
Aug 14, 5:14 PM MDT	Special Weather Statement	BYZ	61 min
Aug 18, 7:38 AM MDT	Special Weather Statement	BYZ	82 min
Aug 22, 5:28 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 22, 6:21 PM MDT	Special Weather Statement	BYZ	54 min
Aug 22, 6:48 PM MDT	Severe Thunderstorm Warning	BYZ	57 min
Aug 22, 7:16 PM MDT	Special Weather Statement	BYZ	59 min
Aug 22, 7:53 PM MDT	Severe Thunderstorm Warning	BYZ	67 min
Aug 22, 8:28 PM MDT	Areal Flood Warning	BYZ	6 hr
Aug 22, 8:40 PM MDT	Severe Thunderstorm Warning	BYZ	65 min
Aug 25, 6:54 PM MDT	Special Weather Statement	BYZ	51 min
Sep 10, 7:24 PM MDT	Special Weather Statement	BYZ	51 min
Oct 1, 9:10 AM MDT	Winter Weather Advisory	BYZ	36 hr
Oct 3, 4:56 AM MDT	Dense Fog Advisory	BYZ	4 hr
Oct 6, 1:56 PM MDT	Winter Storm Watch	BYZ	49 hr
Oct 8, 4:02 AM MDT	Winter Storm Warning	BYZ	47 hr
Oct 22, 5:30 PM MDT	Special Weather Statement	BYZ	45 min
Nov 4, 7:51 PM MST	Special Weather Statement	BYZ	4 hr
Nov 5, 3:10 AM MST	Winter Weather Advisory	BYZ	32 hr
Nov 8, 2:39 PM MST	Winter Weather Advisory	BYZ	54 hr
Nov 10, 2:59 AM MST	Special Weather Statement	BYZ	3 hr
Nov 10, 1:51 PM MST	Special Weather Statement	BYZ	84 min
Nov 14, 1:02 AM MST	Dense Fog Advisory	BYZ	9 hr
Nov 26, 9:45 AM MST	Winter Storm Watch	BYZ	25 hr
Nov 27, 10:22 AM MST	Winter Storm Warning	BYZ	3 days
Dec 7, 3:14 AM MST	Winter Weather Advisory	BYZ	41 hr
Dec 12, 7:38 AM MST	Special Weather Statement	BYZ	3 hr
Dec 13, 8:16 AM MST	Winter Weather Advisory	BYZ	11 hr
Dec 24, 11:28 PM MST	Special Weather Statement	BYZ	2 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	28
Severe Thunderstorm Watch	9
Tornado Watch	1
Mesoscale Discussion	27
Special Weather Statement	35
Flooding
Areal Flood Warning	2
Flash Flood Warning	1
River Flood Warning	2
Flash Flood Watch	2
Flood Watch	1
River Flood Watch	1
Areal Flood Advisory	2
Winter
Winter Storm Warning	6
Winter Storm Watch	7
Winter Weather Advisory	17
Cold
Wind Chill Warning	1
Wind Chill Advisory	5
Wind and dust
High Wind Warning	1
High Wind Watch	1
Fog and smoke
Dense Fog Advisory	3

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2018 2020

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.