Alert archive / Colorado / Larimer County

Weather alerts in Larimer County, Colorado, 2023

238 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Larimer County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Alerts: 238
Warnings: 80
Watches: 34
Advisories: 77
Busiest month: June47 alerts
Busiest day: July 4, 20239 alerts

Over time

By month

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 1, 3:06 AM MST	Winter Weather Advisory	BOU	45 hr
Jan 10, 2:06 PM MST	Winter Weather Advisory	BOU	33 hr
Jan 12, 1:15 AM MST	Dense Fog Advisory	BOU	7 hr
Jan 15, 2:52 PM MST	Winter Storm Watch	BOU	22 hr
Jan 16, 12:36 PM MST	Winter Storm Warning	BOU	58 hr
Jan 16, 12:36 PM MST	Winter Weather Advisory	BOU	52 hr
Jan 25, 2:13 PM MST	Winter Storm Watch	BOU	12 hr
Jan 26, 1:55 AM MST	Winter Storm Warning	BOU	63 hr
Jan 28, 3:14 AM MST	Winter Storm Warning	BOU	62 hr
Jan 29, 8:36 AM MST	Winter Weather Advisory	BOU	38 hr
Feb 8, 5:37 PM MST	Winter Weather Advisory	BOU	11 hr
Feb 8, 5:44 PM MST	Mesoscale Discussion	SPC	4 hr
Feb 14, 2:59 AM MST	Winter Weather Advisory	BOU	45 hr
Feb 18, 2:12 AM MST	High Wind Watch	BOU	25 hr
Feb 19, 3:25 AM MST	High Wind Warning	BOU	57 hr
Feb 20, 2:18 AM MST	Winter Storm Watch	BOU	26 hr
Feb 20, 2:08 PM MST	Winter Storm Warning	BOU	54 hr
Feb 21, 2:53 PM MST	Wind Chill Advisory	BOU	42 hr
Feb 22, 2:45 PM MST	Wind Chill Warning	BOU	18 hr
Feb 25, 2:08 PM MST	High Wind Watch	BOU	22 hr
Feb 26, 12:04 PM MST	High Wind Warning	BOU	18 hr
Mar 3, 1:32 PM MST	Winter Weather Advisory	BOU	63 hr
Mar 5, 1:00 PM MST	Special Weather Statement	BOU	60 min
Mar 5, 2:00 PM MST	Special Weather Statement	BOU	60 min
Mar 7, 6:21 AM MST	Winter Weather Advisory	BOU	5 hr
Mar 7, 7:08 PM MST	Winter Weather Advisory	BOU	15 hr
Mar 9, 2:19 AM MST	Winter Storm Watch	BOU	13 hr
Mar 9, 2:59 PM MST	Winter Storm Warning	BOU	44 hr
Mar 14, 2:56 AM MDT	Winter Weather Advisory	BOU	57 hr
Mar 19, 2:39 PM MDT	Winter Weather Advisory	BOU	41 hr
Mar 20, 2:16 PM MDT	Winter Weather Advisory	BOU	58 hr
Mar 26, 2:20 PM MDT	Winter Weather Advisory	BOU	28 hr
Mar 31, 3:15 AM MDT	High Wind Warning	BOU	16 hr
Apr 2, 1:49 PM MDT	Winter Storm Warning	BOU	58 hr
Apr 3, 3:01 AM MDT	Winter Weather Advisory	BOU	42 hr
Apr 11, 2:33 PM MDT	Fire Weather Watch	BOU	24 hr
Apr 12, 2:35 PM MDT	Red Flag Warning	BOU	29 hr
Apr 13, 2:35 PM MDT	Winter Weather Advisory	BOU	39 hr
Apr 16, 5:02 AM MDT	Fire Weather Watch	BOU	34 hr
Apr 17, 2:35 PM MDT	Red Flag Warning	BOU	29 hr
Apr 20, 1:22 PM MDT	Winter Weather Advisory	BOU	46 hr
Apr 23, 1:53 PM MDT	Winter Storm Watch	BOU	24 hr
Apr 24, 1:45 PM MDT	Winter Storm Warning	BOU	39 hr
Apr 27, 3:29 AM MDT	Winter Weather Advisory	BOU	27 hr
May 9, 7:31 PM MDT	Severe Thunderstorm Warning	BOU	44 min
May 9, 11:11 PM MDT	Severe Thunderstorm Warning	BOU	64 min
May 9, 11:24 PM MDT	Areal Flood Advisory	BOU	3 hr
May 10, 3:08 AM MDT	Flood Watch	BOU	57 hr
May 10, 8:35 PM MDT	Winter Weather Advisory	BOU	6 hr
May 10, 9:02 PM MDT	Winter Storm Watch	BOU	5 hr
May 11, 2:09 AM MDT	Winter Storm Warning	BOU	32 hr
May 12, 9:26 AM MDT	Areal Flood Advisory	BOU	6 hr
May 15, 3:13 PM MDT	Areal Flood Advisory	BOU	3 hr
May 18, 1:23 PM MDT	Flash Flood Warning	BOU	3 hr
May 18, 1:41 PM MDT	Special Weather Statement	BOU	34 min
May 18, 3:35 PM MDT	Areal Flood Advisory	BOU	3 hr
May 20, 2:27 PM MDT	Areal Flood Advisory	BOU	2 hr
May 24, 10:54 AM MDT	Areal Flood Advisory	BOU	2 hr
May 24, 12:03 PM MDT	Areal Flood Advisory	BOU	3 hr
May 24, 3:55 PM MDT	Flash Flood Warning	BOU	2 hr
May 25, 3:10 PM MDT	Areal Flood Advisory	BOU	3 hr
May 26, 11:56 AM MDT	Mesoscale Discussion	SPC	2 hr
May 26, 1:33 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
May 26, 2:40 PM MDT	Severe Thunderstorm Warning	BOU	22 min
May 27, 1:54 PM MDT	Areal Flood Advisory	BOU	3 hr
May 27, 2:12 PM MDT	Flash Flood Warning	BOU	3 hr
May 27, 3:26 PM MDT	Severe Thunderstorm Warning	BOU	49 min
May 27, 3:50 PM MDT	Severe Thunderstorm Warning	BOU	27 min
May 27, 4:54 PM MDT	Flash Flood Warning	BOU	3 hr
May 28, 2:53 PM MDT	Special Weather Statement	BOU	37 min
May 31, 4:04 PM MDT	Severe Thunderstorm Warning	BOU	41 min
Jun 1, 7:06 PM MDT	Special Weather Statement	BOU	39 min
Jun 2, 12:19 PM MDT	Areal Flood Advisory	BOU	86 min
Jun 4, 6:14 AM MDT	Areal Flood Advisory	BOU	3 hr
Jun 4, 9:27 AM MDT	Areal Flood Advisory	BOU	3 hr
Jun 4, 12:36 PM MDT	Areal Flood Advisory	BOU	3 hr
Jun 4, 3:55 PM MDT	Areal Flood Advisory	BOU	3 hr
Jun 5, 8:42 AM MDT	Flash Flood Watch	BOU	8 hr
Jun 5, 2:11 PM MDT	Areal Flood Advisory	BOU	3 hr
Jun 5, 3:16 PM MDT	Areal Flood Advisory	BOU	2 hr
Jun 5, 5:42 PM MDT	Special Weather Statement	BOU	48 min
Jun 6, 12:55 PM MDT	Flash Flood Warning	BOU	2 hr
Jun 6, 1:20 PM MDT	Areal Flood Advisory	BOU	99 min
Jun 7, 2:35 AM MDT	Flash Flood Watch	BOU	17 hr
Jun 7, 12:13 PM MDT	Flash Flood Warning	BOU	3 hr
Jun 7, 2:05 PM MDT	Flash Flood Warning	BOU	3 hr
Jun 7, 3:11 PM MDT	Flash Flood Warning	BOU	3 hr
Jun 7, 4:04 PM MDT	Flash Flood Warning	BOU	3 hr
Jun 7, 8:27 PM MDT	River Flood Advisory	BOU	44 hr
Jun 8, 1:13 PM MDT	Flash Flood Warning	BOU	2 hr
Jun 9, 2:51 PM MDT	Flash Flood Warning	BOU	108 min
Jun 10, 11:49 AM MDT	Flash Flood Warning	BOU	114 min
Jun 11, 4:04 PM MDT	Flash Flood Warning	BOU	3 hr
Jun 11, 6:55 PM MDT	Areal Flood Advisory	BOU	119 min
Jun 11, 7:21 PM MDT	Flash Flood Warning	BOU	3 hr
Jun 11, 10:31 PM MDT	Areal Flood Warning	BOU	6 hr
Jun 12, 3:24 AM MDT	Flood Watch	BOU	21 hr
Jun 12, 12:07 PM MDT	Flash Flood Warning	BOU	3 hr
Jun 12, 12:48 PM MDT	Areal Flood Advisory	BOU	4 hr
Jun 16, 2:23 AM MDT	Flood Watch	BOU	20 hr
Jun 21, 12:36 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 21, 2:49 PM MDT	Mesoscale Discussion	SPC	86 min
Jun 21, 5:25 PM MDT	Mesoscale Discussion	SPC	65 min
Jun 21, 5:59 PM MDT	Areal Flood Advisory	BOU	3 hr
Jun 21, 7:36 PM MDT	Severe Thunderstorm Warning	BOU	39 min
Jun 21, 7:58 PM MDT	Mesoscale Discussion	SPC	92 min
Jun 21, 8:48 PM MDT	Flash Flood Warning Considerable damage threat	BOU	85 min
Jun 22, 11:08 AM MDT	Mesoscale Discussion	SPC	2 hr
Jun 22, 12:14 PM MDT	Severe Thunderstorm Watch	SPC	10 hr
Jun 22, 2:37 PM MDT	Mesoscale Discussion	SPC	83 min
Jun 22, 5:56 PM MDT	Mesoscale Discussion	SPC	94 min
Jun 29, 11:40 AM MDT	Mesoscale Discussion	SPC	2 hr
Jun 29, 1:17 PM MDT	Tornado Watch	SPC	8 hr
Jun 29, 9:08 PM MDT	Areal Flood Advisory	BOU	3 hr
Jun 29, 9:17 PM MDT	Special Weather Statement	CYS	28 min
Jun 30, 11:03 AM MDT	Areal Flood Advisory	BOU	50 min
Jun 30, 11:28 AM MDT	Flash Flood Warning	BOU	3 hr
Jun 30, 1:01 PM MDT	Areal Flood Advisory	BOU	2 hr
Jul 1, 3:58 PM MDT	Areal Flood Advisory	BOU	3 hr
Jul 1, 4:57 PM MDT	Areal Flood Advisory	BOU	118 min
Jul 1, 8:17 PM MDT	Special Weather Statement	BOU	43 min
Jul 3, 4:49 PM MDT	Areal Flood Advisory	BOU	3 hr
Jul 4, 12:44 PM MDT	Special Weather Statement	BOU	31 min
Jul 4, 1:11 PM MDT	Special Weather Statement	BOU	34 min
Jul 4, 1:36 PM MDT	Special Weather Statement	BOU	24 min
Jul 4, 1:41 PM MDT	Mesoscale Discussion	SPC	64 min
Jul 4, 2:05 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 4, 2:38 PM MDT	Areal Flood Advisory	BOU	3 hr
Jul 4, 5:14 PM MDT	Severe Thunderstorm Warning	BOU	31 min
Jul 4, 5:14 PM MDT	Mesoscale Discussion	SPC	91 min
Jul 4, 5:36 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	24 min
Jul 4, 6:02 PM MDT	Severe Thunderstorm Warning	BOU	28 min
Jul 4, 8:34 PM MDT	Mesoscale Discussion	SPC	116 min
Jul 5, 9:05 PM MDT	Areal Flood Advisory	BOU	3 hr
Jul 5, 9:36 PM MDT	Dense Fog Advisory	BOU	11 hr
Jul 6, 1:37 PM MDT	Mesoscale Discussion	SPC	113 min
Jul 6, 2:51 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 7, 1:44 PM MDT	Special Weather Statement	BOU	31 min
Jul 7, 1:48 PM MDT	Areal Flood Advisory	BOU	3 hr
Jul 7, 2:52 PM MDT	Special Weather Statement	CYS	38 min
Jul 7, 3:04 PM MDT	Special Weather Statement	BOU	26 min
Jul 7, 5:16 PM MDT	Special Weather Statement	BOU	29 min
Jul 8, 12:23 PM MDT	Mesoscale Discussion	SPC	97 min
Jul 8, 1:09 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 15, 2:17 PM MDT	Heat Advisory	BOU	54 hr
Jul 15, 3:32 PM MDT	Severe Thunderstorm Warning	BOU	28 min
Jul 15, 3:44 PM MDT	Areal Flood Advisory	BOU	27 min
Jul 15, 3:46 PM MDT	Severe Thunderstorm Warning	BOU	29 min
Jul 15, 3:57 PM MDT	Flash Flood Warning	BOU	3 hr
Jul 15, 4:07 PM MDT	Special Weather Statement	BOU	38 min
Jul 15, 4:11 PM MDT	Severe Thunderstorm Warning	BOU	23 min
Jul 15, 4:12 PM MDT	Severe Thunderstorm Warning	BOU	33 min
Jul 20, 12:23 PM MDT	Flash Flood Warning	BOU	3 hr
Jul 20, 1:13 PM MDT	Flash Flood Warning	BOU	3 hr
Jul 20, 1:27 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 26, 12:35 PM MDT	Areal Flood Advisory	BOU	2 hr
Jul 26, 2:37 PM MDT	Mesoscale Discussion	SPC	113 min
Jul 27, 4:58 PM MDT	Special Weather Statement	CYS	32 min
Jul 27, 6:31 PM MDT	Areal Flood Advisory	BOU	3 hr
Jul 29, 1:33 PM MDT	Special Weather Statement	CYS	27 min
Jul 31, 3:11 AM MDT	Flood Watch	BOU	21 hr
Jul 31, 2:37 PM MDT	Flood Watch	BOU	32 hr
Jul 31, 6:40 PM MDT	Severe Thunderstorm Warning	BOU	50 min
Jul 31, 7:30 PM MDT	Severe Thunderstorm Warning	BOU	45 min
Jul 31, 7:37 PM MDT	Flash Flood Warning	BOU	3 hr
Jul 31, 8:12 PM MDT	Flash Flood Warning	BOU	3 hr
Jul 31, 8:14 PM MDT	Flash Flood Warning	BOU	3 hr
Aug 1, 4:19 PM MDT	Severe Thunderstorm Warning	BOU	26 min
Aug 1, 9:16 PM MDT	Areal Flood Advisory	BOU	119 min
Aug 2, 3:10 PM MDT	Areal Flood Advisory	BOU	3 hr
Aug 2, 11:03 PM MDT	Areal Flood Advisory	BOU	21 min
Aug 2, 11:24 PM MDT	Flash Flood Warning Considerable damage threat	BOU	5 hr
Aug 3, 3:01 PM MDT	Special Weather Statement	BOU	44 min
Aug 3, 3:59 PM MDT	Severe Thunderstorm Warning	BOU	46 min
Aug 3, 4:54 PM MDT	Areal Flood Advisory	BOU	3 hr
Aug 3, 5:11 PM MDT	Severe Thunderstorm Warning	BOU	34 min
Aug 3, 5:17 PM MDT	Flash Flood Warning	BOU	104 min
Aug 3, 5:43 PM MDT	Severe Thunderstorm Warning	BOU	47 min
Aug 5, 3:31 PM MDT	Severe Thunderstorm Warning	BOU	30 min
Aug 6, 2:36 PM MDT	Special Weather Statement	BOU	24 min
Aug 6, 4:12 PM MDT	Severe Thunderstorm Warning	BOU	33 min
Aug 6, 4:35 PM MDT	Areal Flood Advisory	BOU	85 min
Aug 6, 4:39 PM MDT	Severe Thunderstorm Warning	BOU	36 min
Aug 6, 5:04 PM MDT	Areal Flood Advisory	BOU	86 min
Aug 7, 2:39 PM MDT	Severe Thunderstorm Warning	BOU	51 min
Aug 8, 7:34 PM MDT	Special Weather Statement	BOU	41 min
Aug 10, 12:34 PM MDT	Special Weather Statement	BOU	26 min
Aug 10, 1:27 PM MDT	Special Weather Statement	BOU	33 min
Aug 19, 2:33 PM MDT	Areal Flood Advisory	BOU	3 hr
Aug 23, 2:19 PM MDT	Areal Flood Advisory	BOU	2 hr
Aug 23, 4:28 PM MDT	Flash Flood Warning	BOU	3 hr
Aug 24, 1:53 PM MDT	Flood Watch	BOU	30 hr
Aug 27, 1:43 PM MDT	Severe Thunderstorm Warning	BOU	47 min
Aug 27, 2:33 PM MDT	Areal Flood Advisory	BOU	92 min
Aug 27, 2:46 PM MDT	Special Weather Statement	BOU	44 min
Aug 27, 2:56 PM MDT	Flash Flood Warning	BOU	2 hr
Aug 27, 4:18 PM MDT	Special Weather Statement	BOU	42 min
Aug 28, 1:21 PM MDT	Areal Flood Advisory	BOU	3 hr
Aug 28, 2:17 PM MDT	Areal Flood Advisory	BOU	3 hr
Aug 28, 3:08 PM MDT	Special Weather Statement	BOU	37 min
Aug 28, 3:35 PM MDT	Flash Flood Warning	BOU	3 hr
Aug 28, 4:19 PM MDT	Special Weather Statement	BOU	26 min
Sep 3, 1:43 PM MDT	Areal Flood Advisory	BOU	2 hr
Sep 3, 1:56 PM MDT	Flash Flood Warning	BOU	2 hr
Sep 4, 3:21 PM MDT	Special Weather Statement	BOU	39 min
Sep 10, 2:06 PM MDT	Mesoscale Discussion	SPC	114 min
Sep 14, 2:45 PM MDT	Flash Flood Warning	BOU	3 hr
Sep 14, 3:11 PM MDT	Flash Flood Warning	BOU	3 hr
Sep 20, 12:59 PM MDT	Special Weather Statement	BOU	46 min
Oct 2, 3:30 PM MDT	Special Weather Statement	CYS	45 min
Oct 6, 2:56 AM MDT	Frost Advisory	BOU	30 hr
Oct 10, 2:48 PM MDT	Winter Weather Advisory	BOU	63 hr
Oct 12, 1:12 PM MDT	Freeze Watch	BOU	15 hr
Oct 13, 4:06 AM MDT	Freeze Warning	BOU	29 hr
Oct 26, 1:51 PM MDT	Winter Storm Watch	BOU	12 hr
Oct 26, 5:21 PM MDT	Freeze Warning	BOU	19 hr
Oct 27, 1:53 AM MDT	Winter Storm Warning	BOU	58 hr
Oct 27, 7:57 AM MDT	Special Weather Statement	BOU	2 hr
Oct 27, 2:22 PM MDT	Winter Storm Watch	BOU	6 hr
Oct 27, 2:22 PM MDT	Winter Weather Advisory	BOU	46 hr
Nov 22, 1:49 AM MST	Winter Storm Watch	BOU	12 hr
Nov 22, 1:59 PM MST	Winter Storm Warning	BOU	45 hr
Nov 22, 1:59 PM MST	Winter Weather Advisory	BOU	63 hr
Nov 25, 6:40 AM MST	Winter Weather Advisory	BOU	7 hr
Dec 1, 3:16 AM MST	Winter Storm Warning	BOU	3 days
Dec 1, 1:42 PM MST	Winter Weather Advisory	BOU	63 hr
Dec 1, 1:45 PM MST	High Wind Watch	BOU	23 hr
Dec 2, 12:43 PM MST	High Wind Warning	BOU	25 hr
Dec 5, 2:22 PM MST	High Wind Watch	BOU	23 hr
Dec 6, 1:25 PM MST	High Wind Warning	BOU	28 hr
Dec 7, 3:01 AM MST	Winter Weather Advisory	BOU	50 hr
Dec 9, 3:55 AM MST	High Wind Watch	BOU	9 hr
Dec 9, 1:18 PM MST	High Wind Warning	BOU	28 hr
Dec 12, 5:28 PM MST	Winter Weather Advisory	BOU	16 hr
Dec 14, 4:51 AM MST	Dense Fog Advisory	BOU	5 hr
Dec 22, 8:49 PM MST	Winter Weather Advisory	BOU	38 hr
Dec 24, 8:28 PM MST	High Wind Watch	BOU	6 hr
Dec 25, 1:58 AM MST	High Wind Warning	BOU	43 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	25
Severe Thunderstorm Watch	7
Tornado Watch	1
Mesoscale Discussion	16
Special Weather Statement	31
Flooding
Areal Flood Warning	1
Flash Flood Warning	31
Flash Flood Watch	2
Flood Watch	6
Areal Flood Advisory	44
River Flood Advisory	1
Winter
Winter Storm Warning	11
Winter Storm Watch	9
Winter Weather Advisory	26
Heat
Heat Advisory	1
Cold
Freeze Warning	2
Wind Chill Warning	1
Freeze Watch	1
Frost Advisory	1
Wind Chill Advisory	1
Wind and dust
High Wind Warning	7
High Wind Watch	6
Fire
Red Flag Warning	2
Fire Weather Watch	2
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 2022 2024

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. Rebuilt daily.