Weather alerts in Adams County, Colorado, 2014

209 weather alerts in 2014, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Adams County and its neighbors

Each county as a circle sized by its count in 2014. Tap one for its archive.

Alerts: 209
Warnings: 77
Watches: 28
Advisories: 42
Busiest month: June58 alerts
Busiest day: May 21, 201413 alerts

Over time

By month

Warning verification

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

7 of 16 tornado warnings covering Adams County in 2014 had a tornado report inside them; 5 of 13 tornado reports fell inside a warning, on average 23 minutes after it went out.

Adams County, 2014

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	16	7	56%	13	38%	23 min
Severe thunderstorm warnings	46	19	59%	13	46%	18 min
Flash flood warnings	3	1	67%	1	0%

Each office's whole area, 2014

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Denver/Boulder, CO: tornado warnings	83	23	72%	56	63%	13 min
NWS Denver/Boulder, CO: severe thunderstorm warnings	277	94	66%	293	63%	16 min
NWS Denver/Boulder, CO: flash flood warnings	41	9	78%	22	59%	33 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 3, 4:10 AM MST	Winter Weather Advisory	BOU	48 hr
Jan 4, 8:21 PM MST	Wind Chill Advisory	BOU	36 hr
Jan 28, 3:36 PM MST	Winter Storm Warning	BOU	61 hr
Jan 29, 3:22 PM MST	Winter Storm Watch	BOU	14 hr
Jan 30, 6:40 PM MST	Mesoscale Discussion	SPC	5 hr
Jan 31, 11:08 AM MST	Winter Weather Advisory	BOU	18 hr
Feb 2, 7:17 AM MST	Dense Fog Advisory	BOU	103 min
Feb 5, 12:22 AM MST	Wind Chill Advisory	BOU	11 hr
Feb 5, 2:44 PM MST	Wind Chill Advisory	BOU	20 hr
Feb 10, 4:24 AM MST	Dense Fog Advisory	BOU	5 hr
Feb 23, 11:26 PM MST	Dense Fog Advisory	BOU	10 hr
Mar 4, 2:44 PM MST	Winter Weather Advisory	BOU	11 hr
Mar 6, 4:58 AM MST	Winter Weather Advisory	BOU	45 hr
Mar 16, 10:24 AM MDT	Red Flag Warning	BOU	33 hr
Mar 30, 10:20 PM MDT	Severe Thunderstorm Warning	BOU	25 min
Mar 30, 10:54 PM MDT	Special Weather Statement	BOU	36 min
Apr 2, 4:32 AM MDT	Winter Weather Advisory	BOU	31 hr
Apr 11, 2:50 PM MDT	Winter Storm Watch	BOU	25 hr
Apr 12, 3:51 PM MDT	Winter Weather Advisory	BOU	32 hr
Apr 23, 2:32 PM MDT	Mesoscale Discussion	SPC	2 hr
Apr 25, 3:38 PM MDT	Red Flag Warning	BOU	28 hr
Apr 26, 4:07 AM MDT	High Wind Watch	BOU	41 hr
Apr 26, 9:30 PM MDT	High Wind Warning	BOU	24 hr
Apr 28, 9:00 PM MDT	High Wind Warning	BOU	23 hr
May 7, 11:59 AM MDT	Mesoscale Discussion	SPC	2 hr
May 7, 12:37 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
May 7, 2:26 PM MDT	Severe Thunderstorm Warning	BOU	49 min
May 7, 3:04 PM MDT	Severe Thunderstorm Warning	BOU	41 min
May 7, 4:05 PM MDT	Mesoscale Discussion	SPC	85 min
May 7, 7:44 PM MDT	Severe Thunderstorm Warning	BOU	31 min
May 7, 8:02 PM MDT	Severe Thunderstorm Warning	BOU	28 min
May 9, 4:30 AM MDT	Winter Storm Watch	BOU	49 hr
May 9, 5:28 AM MDT	Dense Fog Advisory	BOU	4 hr
May 10, 6:00 AM MDT	Winter Storm Warning	BOU	54 hr
May 12, 4:32 AM MDT	Freeze Warning	BOU	27 hr
May 13, 3:14 PM MDT	Freeze Warning	BOU	16 hr
May 20, 2:08 PM MDT	Mesoscale Discussion	SPC	67 min
May 20, 2:31 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
May 20, 2:33 PM MDT	Severe Thunderstorm Warning	BOU	42 min
May 20, 3:15 PM MDT	Severe Thunderstorm Warning	BOU	45 min
May 20, 4:50 PM MDT	Mesoscale Discussion	SPC	85 min
May 20, 4:56 PM MDT	Severe Thunderstorm Warning	BOU	49 min
May 20, 5:36 PM MDT	Severe Thunderstorm Warning	BOU	39 min
May 20, 6:19 PM MDT	Severe Thunderstorm Warning	BOU	41 min
May 21, 12:09 PM MDT	Mesoscale Discussion	SPC	96 min
May 21, 12:34 PM MDT	Tornado Watch	SPC	8 hr
May 21, 1:36 PM MDT	Severe Thunderstorm Warning	BOU	39 min
May 21, 1:56 PM MDT	Tornado Warning	BOU	34 min
May 21, 2:21 PM MDT	Severe Thunderstorm Warning	BOU	39 min
May 21, 2:23 PM MDT	Tornado Warning	BOU	22 min
May 21, 2:42 PM MDT	Tornado Warning	BOU	33 min
May 21, 3:18 PM MDT	Tornado Warning Tornado observed	BOU	27 min
May 21, 3:47 PM MDT	Severe Thunderstorm Warning	BOU	28 min
May 21, 4:18 PM MDT	Severe Thunderstorm Warning	BOU	42 min
May 21, 4:57 PM MDT	Tornado Warning	BOU	48 min
May 21, 5:34 PM MDT	Severe Thunderstorm Warning	BOU	41 min
May 22, 12:14 AM MDT	Areal Flood Advisory	BOU	91 min
May 22, 12:07 PM MDT	Mesoscale Discussion	SPC	83 min
May 22, 12:34 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
May 22, 2:42 PM MDT	Tornado Warning	BOU	33 min
May 22, 2:55 PM MDT	Severe Thunderstorm Warning	BOU	50 min
May 22, 5:07 PM MDT	Flash Flood Warning	BOU	3 hr
May 22, 5:18 PM MDT	Areal Flood Advisory	BOU	3 hr
May 22, 9:37 PM MDT	Areal Flood Warning	BOU	4 hr
May 23, 6:05 PM MDT	Areal Flood Advisory	BOU	115 min
May 23, 10:26 PM MDT	Areal Flood Advisory	BOU	3 hr
May 24, 5:50 AM MDT	Flash Flood Watch	BOU	17 hr
May 30, 5:17 AM MDT	Flash Flood Watch	BOU	15 hr
May 30, 3:45 PM MDT	Severe Thunderstorm Warning	BOU	45 min
May 30, 4:13 PM MDT	Flash Flood Warning	BOU	3 hr
May 30, 5:12 PM MDT	Flash Flood Warning	BOU	3 hr
May 31, 1:34 PM MDT	Mesoscale Discussion	SPC	116 min
Jun 2, 12:43 AM MDT	Mesoscale Discussion	SPC	92 min
Jun 4, 5:23 PM MDT	Severe Thunderstorm Warning	BOU	37 min
Jun 4, 7:16 PM MDT	Severe Thunderstorm Warning	BOU	44 min
Jun 4, 8:09 PM MDT	Mesoscale Discussion	SPC	96 min
Jun 5, 2:25 PM MDT	Mesoscale Discussion	SPC	95 min
Jun 5, 2:43 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 5, 4:55 PM MDT	Severe Thunderstorm Warning	BOU	35 min
Jun 5, 6:37 PM MDT	Mesoscale Discussion	SPC	113 min
Jun 6, 11:56 AM MDT	Mesoscale Discussion	SPC	2 hr
Jun 6, 12:38 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 6, 2:32 PM MDT	Mesoscale Discussion	SPC	58 min
Jun 6, 2:48 PM MDT	Tornado Warning	BOU	27 min
Jun 8, 11:31 AM MDT	Mesoscale Discussion	SPC	89 min
Jun 8, 12:19 PM MDT	Tornado Watch	SPC	8 hr
Jun 8, 1:07 PM MDT	Tornado Warning	BOU	23 min
Jun 8, 1:34 PM MDT	Tornado Warning	BOU	26 min
Jun 8, 2:12 PM MDT	Tornado Warning	BOU	33 min
Jun 8, 2:22 PM MDT	Mesoscale Discussion	SPC	53 min
Jun 8, 2:46 PM MDT	Severe Thunderstorm Warning	BOU	29 min
Jun 11, 3:35 PM MDT	Severe Thunderstorm Warning	BOU	40 min
Jun 12, 1:44 PM MDT	Mesoscale Discussion	SPC	91 min
Jun 14, 2:29 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 14, 3:00 PM MDT	Severe Thunderstorm Warning	BOU	30 min
Jun 14, 4:26 PM MDT	Severe Thunderstorm Warning	BOU	34 min
Jun 18, 4:49 PM MDT	Special Weather Statement	BOU	41 min
Jun 18, 6:08 PM MDT	Mesoscale Discussion	SPC	97 min
Jun 18, 7:06 PM MDT	Severe Thunderstorm Warning	BOU	24 min
Jun 18, 7:33 PM MDT	Special Weather Statement	BOU	27 min
Jun 21, 2:41 PM MDT	Tornado Warning	BOU	16 min
Jun 21, 2:43 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 21, 2:47 PM MDT	Tornado Warning	BOU	28 min
Jun 21, 3:14 PM MDT	Tornado Warning	BOU	18 min
Jun 22, 1:22 PM MDT	Mesoscale Discussion	SPC	113 min
Jun 22, 5:33 PM MDT	Mesoscale Discussion	SPC	87 min
Jun 22, 6:07 PM MDT	Severe Thunderstorm Warning	BOU	23 min
Jun 22, 8:38 PM MDT	Mesoscale Discussion	SPC	97 min
Jun 23, 1:39 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 23, 4:06 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 23, 4:11 PM MDT	Severe Thunderstorm Warning	BOU	34 min
Jun 23, 6:11 PM MDT	Severe Thunderstorm Warning	BOU	34 min
Jun 23, 6:17 PM MDT	Tornado Warning	BOU	28 min
Jun 23, 7:29 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 24, 2:44 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 24, 7:13 PM MDT	Mesoscale Discussion	SPC	92 min
Jun 24, 7:45 PM MDT	Severe Thunderstorm Warning	BOU	30 min
Jun 24, 8:54 PM MDT	Severe Thunderstorm Warning	BOU	20 min
Jun 25, 1:28 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 25, 2:23 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 26, 2:07 PM MDT	Mesoscale Discussion	SPC	53 min
Jun 26, 3:37 PM MDT	Special Weather Statement	BOU	23 min
Jun 26, 3:39 PM MDT	Severe Thunderstorm Warning	BOU	36 min
Jun 26, 5:11 PM MDT	Special Weather Statement	BOU	34 min
Jun 26, 5:21 PM MDT	Severe Thunderstorm Warning	BOU	24 min
Jun 26, 5:48 PM MDT	Mesoscale Discussion	SPC	87 min
Jun 27, 12:05 PM MDT	Mesoscale Discussion	SPC	115 min
Jun 27, 12:48 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 27, 3:08 PM MDT	Severe Thunderstorm Warning	BOU	52 min
Jun 27, 5:47 PM MDT	Mesoscale Discussion	SPC	58 min
Jul 7, 8:05 PM MDT	Severe Thunderstorm Warning	BOU	25 min
Jul 7, 8:34 PM MDT	Mesoscale Discussion	SPC	56 min
Jul 7, 9:29 PM MDT	Severe Thunderstorm Warning	BOU	31 min
Jul 9, 2:54 PM MDT	Mesoscale Discussion	SPC	96 min
Jul 9, 4:42 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 9, 5:07 PM MDT	Special Weather Statement	BOU	23 min
Jul 11, 3:35 PM MDT	Areal Flood Advisory	BOU	115 min
Jul 11, 3:49 PM MDT	Areal Flood Advisory	BOU	116 min
Jul 11, 4:20 PM MDT	Areal Flood Advisory	BOU	3 hr
Jul 11, 4:54 PM MDT	Areal Flood Advisory	BOU	2 hr
Jul 12, 10:41 AM MDT	Flash Flood Watch	BOU	10 hr
Jul 12, 5:23 PM MDT	Areal Flood Advisory	BOU	97 min
Jul 14, 11:48 AM MDT	Mesoscale Discussion	SPC	57 min
Jul 14, 12:59 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 14, 6:03 PM MDT	Mesoscale Discussion	SPC	87 min
Jul 15, 1:29 PM MDT	Mesoscale Discussion	SPC	3 hr
Jul 16, 12:33 PM MDT	Mesoscale Discussion	SPC	87 min
Jul 20, 6:41 PM MDT	Special Weather Statement	BOU	49 min
Jul 23, 5:26 PM MDT	Severe Thunderstorm Warning	BOU	64 min
Jul 23, 6:03 PM MDT	Areal Flood Advisory	BOU	117 min
Jul 25, 4:57 PM MDT	Special Weather Statement	BOU	18 min
Jul 27, 6:53 PM MDT	Areal Flood Advisory	BOU	97 min
Jul 28, 1:37 PM MDT	Flash Flood Watch	BOU	52 hr
Jul 28, 3:50 PM MDT	Tornado Warning	BOU	25 min
Jul 28, 4:02 PM MDT	Tornado Warning	BOU	28 min
Jul 28, 4:20 PM MDT	Areal Flood Advisory	BOU	3 hr
Jul 28, 4:38 PM MDT	Areal Flood Advisory	BOU	2 hr
Jul 28, 5:22 PM MDT	Areal Flood Advisory	BOU	113 min
Jul 29, 2:11 PM MDT	Areal Flood Advisory	BOU	3 hr
Jul 29, 2:42 PM MDT	Areal Flood Advisory	BOU	3 hr
Jul 29, 3:08 PM MDT	Areal Flood Advisory	BOU	3 hr
Aug 7, 12:51 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 7, 1:43 PM MDT	Severe Thunderstorm Warning	BOU	62 min
Aug 7, 1:52 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 7, 2:10 PM MDT	Severe Thunderstorm Warning	BOU	65 min
Aug 9, 3:42 PM MDT	Mesoscale Discussion	SPC	63 min
Aug 9, 4:22 PM MDT	Special Weather Statement	BOU	38 min
Aug 9, 4:26 PM MDT	Special Weather Statement	BOU	34 min
Aug 14, 4:19 PM MDT	Special Weather Statement	BOU	41 min
Aug 18, 2:48 PM MDT	Mesoscale Discussion	SPC	87 min
Aug 22, 7:15 PM MDT	Areal Flood Advisory	BOU	90 min
Aug 23, 1:07 PM MDT	Mesoscale Discussion	SPC	113 min
Aug 23, 2:46 PM MDT	Special Weather Statement	BOU	44 min
Aug 23, 3:29 PM MDT	Special Weather Statement	BOU	31 min
Aug 25, 2:37 PM MDT	Mesoscale Discussion	SPC	113 min
Aug 25, 5:14 PM MDT	Severe Thunderstorm Warning	BOU	31 min
Aug 25, 5:47 PM MDT	Severe Thunderstorm Warning	BOU	28 min
Aug 25, 7:43 PM MDT	Mesoscale Discussion	SPC	92 min
Aug 26, 1:11 AM MDT	Areal Flood Advisory	BOU	94 min
Aug 26, 5:47 AM MDT	Flash Flood Watch	BOU	15 hr
Aug 26, 2:12 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 27, 1:37 PM MDT	Mesoscale Discussion	SPC	113 min
Aug 27, 4:21 PM MDT	Severe Thunderstorm Warning	BOU	39 min
Aug 27, 5:14 PM MDT	Severe Thunderstorm Warning	BOU	61 min
Sep 12, 10:22 AM MDT	Frost Advisory	BOU	21 hr
Sep 22, 2:48 PM MDT	Mesoscale Discussion	SPC	117 min
Sep 29, 1:19 PM MDT	Mesoscale Discussion	SPC	56 min
Sep 29, 2:01 PM MDT	Tornado Watch	SPC	7 hr
Sep 29, 2:39 PM MDT	Severe Thunderstorm Warning	BOU	66 min
Sep 29, 3:22 PM MDT	Special Weather Statement	BOU	53 min
Sep 29, 3:48 PM MDT	Severe Thunderstorm Warning	BOU	57 min
Oct 1, 3:23 PM MDT	Severe Thunderstorm Warning	BOU	52 min
Oct 1, 4:03 PM MDT	Severe Thunderstorm Warning	BOU	42 min
Oct 1, 4:04 PM MDT	Mesoscale Discussion	SPC	116 min
Oct 2, 2:57 PM MDT	Frost Advisory	BOU	17 hr
Oct 3, 3:27 PM MDT	Frost Advisory	BOU	18 hr
Oct 12, 8:05 PM MDT	Frost Advisory	BOU	12 hr
Oct 13, 10:06 AM MDT	Frost Advisory	BOU	22 hr
Oct 26, 3:14 PM MDT	Freeze Watch	BOU	23 hr
Oct 27, 2:21 PM MDT	Freeze Warning	BOU	18 hr
Oct 28, 1:44 PM MDT	Freeze Warning	BOU	18 hr
Nov 12, 2:35 AM MST	Winter Weather Advisory	BOU	15 hr
Nov 12, 5:12 PM MST	Wind Chill Advisory	BOU	16 hr
Dec 13, 2:07 PM MST	Winter Weather Advisory	BOU	39 hr
Dec 22, 6:01 AM MST	High Wind Watch	BOU	23 hr
Dec 24, 5:43 AM MST	Winter Storm Watch	BOU	9 hr
Dec 24, 2:38 PM MST	Winter Weather Advisory	BOU	37 hr
Dec 28, 10:36 AM MST	Winter Weather Advisory	BOU	43 hr
Dec 30, 5:53 AM MST	Wind Chill Warning	BOU	28 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	46
Tornado Warning	16
Severe Thunderstorm Watch	13
Tornado Watch	3
Mesoscale Discussion	48
Special Weather Statement	14
Flooding
Areal Flood Warning	1
Flash Flood Warning	3
Flash Flood Watch	5
Areal Flood Advisory	19
Winter
Winter Storm Warning	2
Winter Storm Watch	4
Winter Weather Advisory	10
Cold
Freeze Warning	4
Wind Chill Warning	1
Freeze Watch	1
Frost Advisory	5
Wind Chill Advisory	4
Wind and dust
High Wind Warning	2
High Wind Watch	2
Fire
Red Flag Warning	2
Fog and smoke
Dense Fog Advisory	4

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2013 2015

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.