Alert archive / Arizona / Coconino County

Weather alerts in Coconino County, Arizona, 2023

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

Coconino County and its neighbors

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

Alerts: 216
Warnings: 115
Watches: 18
Advisories: 70
Busiest month: August70 alerts
Busiest day: July 31, 202310 alerts

Over time

By month

Warning verification

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

Coconino County, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	43	2	95%	3	33%	20 min
Flash flood warnings	40	7	83%	16	50%	115 min

Each office's whole area, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Flagstaff, AZ: tornado warnings	0			3	0%
NWS Flagstaff, AZ: severe thunderstorm warnings	79	7	91%	14	57%	16 min
NWS Flagstaff, AZ: flash flood warnings	71	10	86%	30	40%	151 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 1, 3:18 PM MST	Areal Flood Advisory	FGZ	15 hr
Jan 2, 2:05 PM MST	Winter Weather Advisory	FGZ	24 hr
Jan 13, 1:38 PM MST	Winter Storm Warning	FGZ	48 hr
Jan 13, 1:38 PM MST	Winter Weather Advisory	FGZ	51 hr
Jan 14, 1:49 PM MST	Winter Storm Watch	FGZ	14 hr
Jan 15, 3:33 AM MST	Winter Storm Warning	FGZ	67 hr
Jan 15, 3:33 AM MST	Winter Weather Advisory	FGZ	34 hr
Jan 17, 1:57 PM MST	Snow Squall Warning Significant damage threat	FGZ	48 min
Jan 18, 1:27 PM MST	Winter Weather Advisory	FGZ	53 hr
Jan 22, 2:57 AM MST	Winter Weather Advisory	FGZ	44 hr
Jan 30, 2:48 AM MST	Winter Weather Advisory	FGZ	25 hr
Feb 12, 1:51 AM MST	Winter Weather Advisory	FGZ	45 hr
Feb 12, 1:20 PM MST	Winter Storm Warning	FGZ	71 hr
Feb 13, 2:25 PM MST	Winter Weather Advisory	FGZ	40 hr
Feb 19, 2:15 PM MST	Winter Storm Watch	FGZ	24 hr
Feb 19, 2:20 PM MST	High Wind Watch	FGZ	12 hr
Feb 20, 2:46 AM MST	High Wind Warning	FGZ	62 hr
Feb 20, 2:03 PM MST	Winter Storm Warning	FGZ	4 days
Feb 22, 2:02 PM MST	Winter Weather Advisory	FGZ	42 hr
Feb 24, 2:43 PM MST	Winter Storm Warning	FGZ	47 hr
Feb 24, 2:43 PM MST	Winter Weather Advisory	FGZ	51 hr
Feb 27, 2:03 PM MST	Winter Storm Watch	FGZ	13 hr
Feb 28, 3:19 AM MST	Winter Storm Warning	FGZ	56 hr
Feb 28, 1:39 PM MST	Wind Advisory	FGZ	27 hr
Mar 1, 12:26 PM MST	Winter Weather Advisory	FGZ	23 hr
Mar 4, 1:43 PM MST	Wind Advisory	FGZ	30 hr
Mar 14, 2:35 AM MST	Flood Watch	FGZ	62 hr
Mar 14, 1:40 PM MST	River Flood Warning	FGZ	38 hr
Mar 15, 3:30 PM MST	Areal Flood Warning	FGZ	20 hr
Mar 16, 3:10 AM MST	River Flood Advisory	FGZ	8 hr
Mar 17, 1:44 AM MST	Areal Flood Warning	FGZ	33 hr
Mar 17, 3:28 AM MST	Areal Flood Warning	FGZ	33 hr
Mar 19, 2:25 AM MST	Winter Storm Warning	FGZ	3 days
Mar 19, 1:10 PM MST	Flood Watch	FGZ	3 days
Mar 20, 3:18 AM MST	Winter Weather Advisory	FGZ	35 hr
Mar 21, 1:53 AM MST	Wind Advisory	FGZ	35 hr
Mar 21, 9:24 AM MST	River Flood Advisory	FGZ	21 hr
Mar 21, 11:36 AM MST	Areal Flood Warning	FGZ	31 hr
Mar 22, 6:14 AM MST	Winter Weather Advisory	FGZ	5 hr
Mar 22, 6:25 AM MST	Areal Flood Warning	FGZ	6 hr
Mar 22, 6:50 AM MST	River Flood Warning	FGZ	8 hr
Mar 22, 7:01 PM MST	Areal Flood Advisory	FGZ	3 hr
Mar 22, 9:54 PM MST	Areal Flood Warning	FGZ	47 hr
Mar 23, 12:19 AM MST	Flash Flood Warning Considerable damage threat	FGZ	35 hr
Mar 24, 10:49 AM MST	Areal Flood Warning	FGZ	12 hr
Mar 28, 1:50 PM MST	Wind Advisory	FGZ	51 hr
Mar 29, 3:18 AM MST	Wind Advisory	FGZ	38 hr
Mar 29, 1:54 PM MST	Winter Weather Advisory	FGZ	30 hr
Apr 1, 2:23 AM MST	High Wind Watch	FGZ	24 hr
Apr 2, 2:29 AM MST	High Wind Warning	FGZ	45 hr
Apr 2, 2:29 AM MST	Wind Advisory	FGZ	63 hr
Apr 10, 5:33 PM MST	Areal Flood Advisory	FGZ	3 hr
Apr 10, 8:38 PM MST	Areal Flood Advisory	FGZ	3 hr
Apr 12, 8:18 AM MST	Areal Flood Advisory	FGZ	27 hr
Apr 17, 1:33 PM MST	Wind Advisory	FGZ	31 hr
Apr 18, 1:45 AM MST	Wind Advisory	FGZ	42 hr
Apr 24, 12:56 PM MST	Wind Advisory	FGZ	31 hr
May 3, 2:05 PM MST	Wind Advisory	FGZ	28 hr
May 16, 2:40 PM MST	Areal Flood Advisory	FGZ	3 hr
May 16, 4:27 PM MST	Flash Flood Warning Considerable damage threat	FGZ	15 hr
May 17, 1:35 PM MST	Severe Thunderstorm Warning	FGZ	25 min
May 17, 4:02 PM MST	Severe Thunderstorm Warning	FGZ	18 min
May 17, 7:08 PM MST	Areal Flood Advisory	FGZ	3 hr
May 18, 1:30 PM MST	Areal Flood Advisory	FGZ	3 hr
May 20, 2:53 PM MST	Flash Flood Warning Considerable damage threat	FGZ	9 hr
May 20, 4:08 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jun 2, 6:03 PM MST	Flash Flood Warning Considerable damage threat	FGZ	117 min
Jun 6, 2:12 PM MST	Severe Thunderstorm Warning	FGZ	18 min
Jun 10, 3:01 AM MST	Wind Advisory	FGZ	41 hr
Jun 17, 1:48 PM MST	Fire Weather Watch	FGZ	24 hr
Jun 18, 1:36 PM MST	Wind Advisory	FGZ	29 hr
Jun 18, 1:45 PM MST	Red Flag Warning	FGZ	30 hr
Jun 23, 2:45 AM MST	Red Flag Warning	FGZ	17 hr
Jun 25, 1:03 PM MST	Wind Advisory	FGZ	31 hr
Jun 25, 1:12 PM MST	Fire Weather Watch	FGZ	24 hr
Jun 25, 1:12 PM MST	Red Flag Warning	FGZ	31 hr
Jun 26, 12:32 PM MST	Wind Advisory	FGZ	31 hr
Jun 26, 12:53 PM MST	Fire Weather Watch	FGZ	24 hr
Jun 26, 12:53 PM MST	Red Flag Warning	FGZ	31 hr
Jun 27, 12:33 PM MST	Red Flag Warning	FGZ	31 hr
Jun 28, 12:10 PM MST	Excessive Heat Watch	FGZ	24 hr
Jun 29, 12:30 PM MST	Excessive Heat Warning	FGZ	31 days
Jul 4, 1:51 PM MST	Fire Weather Watch	FGZ	23 hr
Jul 5, 1:10 PM MST	Red Flag Warning	FGZ	31 hr
Jul 5, 1:10 PM MST	Red Flag Warning	FGZ	55 hr
Jul 12, 12:50 PM MST	Heat Advisory	FGZ	9 days
Jul 21, 3:41 PM MST	Severe Thunderstorm Warning	FGZ	34 min
Jul 22, 3:50 PM MST	Severe Thunderstorm Warning	FGZ	40 min
Jul 23, 12:19 PM MST	Special Weather Statement	FGZ	26 min
Jul 23, 12:40 PM MST	Special Weather Statement	FGZ	35 min
Jul 23, 12:56 PM MST	Severe Thunderstorm Warning	FGZ	32 min
Jul 23, 1:22 PM MST	Areal Flood Advisory	FGZ	4 hr
Jul 23, 1:28 PM MST	Special Weather Statement	FGZ	32 min
Jul 23, 1:42 PM MST	Severe Thunderstorm Warning	FGZ	18 min
Jul 23, 3:22 PM MST	Severe Thunderstorm Warning	FGZ	38 min
Jul 24, 12:12 PM MST	Areal Flood Advisory	FGZ	3 hr
Jul 25, 3:43 PM MST	Severe Thunderstorm Warning	FGZ	47 min
Jul 26, 10:53 AM MST	Severe Thunderstorm Warning	FGZ	20 min
Jul 27, 12:48 PM MST	Areal Flood Advisory	FGZ	3 hr
Jul 28, 12:24 PM MST	Severe Thunderstorm Warning	FGZ	36 min
Jul 29, 3:26 PM MST	Flash Flood Warning Considerable damage threat	FGZ	4 hr
Jul 30, 12:28 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 30, 1:02 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 30, 2:35 PM MST	Flash Flood Warning Considerable damage threat	FGZ	9 hr
Jul 30, 2:46 PM MST	Severe Thunderstorm Warning	FGZ	29 min
Jul 30, 3:28 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 30, 3:59 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 30, 7:07 PM MST	Areal Flood Advisory	FGZ	2 hr
Jul 31, 12:15 PM MST	Severe Thunderstorm Warning	FGZ	30 min
Jul 31, 12:20 PM MST	Severe Thunderstorm Warning	FGZ	25 min
Jul 31, 12:55 PM MST	Severe Thunderstorm Warning	FGZ	35 min
Jul 31, 1:07 PM MST	Severe Thunderstorm Warning	FGZ	23 min
Jul 31, 1:19 PM MST	Severe Thunderstorm Warning	FGZ	26 min
Jul 31, 1:40 PM MST	Severe Thunderstorm Warning	FGZ	35 min
Jul 31, 1:48 PM MST	Severe Thunderstorm Warning	FGZ	27 min
Jul 31, 2:33 PM MST	Severe Thunderstorm Warning	FGZ	27 min
Jul 31, 4:00 PM MST	Areal Flood Advisory	FGZ	3 hr
Jul 31, 7:26 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 31, 7:31 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 1, 4:26 PM MST	Severe Thunderstorm Warning	FGZ	33 min
Aug 2, 8:25 AM MST	Flood Watch	FGZ	9 hr
Aug 2, 12:36 PM MST	Severe Thunderstorm Warning	FGZ	24 min
Aug 2, 1:32 PM MST	Special Weather Statement	FGZ	28 min
Aug 2, 1:38 PM MST	Special Weather Statement	FGZ	22 min
Aug 2, 2:22 PM MST	Special Weather Statement	FGZ	23 min
Aug 2, 2:41 PM MST	Severe Thunderstorm Warning	FGZ	34 min
Aug 4, 1:01 PM MST	Excessive Heat Warning	FGZ	55 hr
Aug 7, 2:46 AM MST	Fire Weather Watch	FGZ	11 hr
Aug 7, 1:17 PM MST	Severe Thunderstorm Warning	FGZ	43 min
Aug 7, 1:58 PM MST	Red Flag Warning	FGZ	30 hr
Aug 7, 2:10 PM MST	Severe Thunderstorm Warning	FGZ	35 min
Aug 9, 4:08 PM MST	Areal Flood Advisory	FGZ	3 hr
Aug 9, 4:58 PM MST	Severe Thunderstorm Warning	FGZ	32 min
Aug 9, 5:45 PM MST	Severe Thunderstorm Warning	FGZ	30 min
Aug 9, 6:00 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 9, 8:25 PM MST	Areal Flood Advisory	FGZ	3 hr
Aug 10, 12:47 PM MST	Severe Thunderstorm Warning	FGZ	28 min
Aug 10, 4:50 PM MST	Severe Thunderstorm Warning	FGZ	40 min
Aug 10, 4:51 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 10, 5:08 PM MST	Areal Flood Advisory	FGZ	112 min
Aug 11, 5:37 PM MST	Flash Flood Warning Considerable damage threat	FGZ	6 hr
Aug 11, 6:29 PM MST	Special Weather Statement	FGZ	31 min
Aug 11, 6:47 PM MST	Severe Thunderstorm Warning	FGZ	28 min
Aug 11, 7:35 PM MST	Flash Flood Warning Considerable damage threat	FGZ	4 hr
Aug 11, 8:03 PM MST	Severe Thunderstorm Warning	FGZ	42 min
Aug 12, 11:31 AM MST	Flash Flood Warning Considerable damage threat	FGZ	4 hr
Aug 12, 1:05 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 12, 2:07 PM MST	Severe Thunderstorm Warning	FGZ	20 min
Aug 15, 12:24 PM MST	Special Weather Statement	FGZ	21 min
Aug 15, 1:02 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 15, 1:10 PM MST	Special Weather Statement	FGZ	20 min
Aug 15, 8:24 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 16, 12:44 PM MST	Special Weather Statement	FGZ	31 min
Aug 16, 1:43 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 16, 2:37 PM MST	Areal Flood Advisory	FGZ	3 hr
Aug 16, 2:59 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 16, 4:02 PM MST	Areal Flood Advisory	FGZ	3 hr
Aug 16, 5:16 PM MST	Areal Flood Advisory	FGZ	3 hr
Aug 16, 7:11 PM MST	Areal Flood Advisory	FGZ	3 hr
Aug 17, 11:15 AM MST	Flood Watch	FGZ	57 hr
Aug 17, 11:37 AM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 18, 4:33 PM MST	Areal Flood Advisory	FGZ	4 hr
Aug 18, 5:04 PM MST	Areal Flood Advisory	FGZ	5 hr
Aug 20, 2:06 AM MST	Wind Advisory	FGZ	22 hr
Aug 20, 9:42 AM MST	Flood Watch	FGZ	37 hr
Aug 20, 12:16 PM MST	Mesoscale Discussion	SPC	119 min
Aug 21, 2:52 PM MST	Special Weather Statement	FGZ	23 min
Aug 21, 4:18 PM MST	Special Weather Statement	FGZ	27 min
Aug 21, 4:41 PM MST	Severe Thunderstorm Warning	FGZ	34 min
Aug 21, 6:37 PM MST	Severe Thunderstorm Warning	FGZ	23 min
Aug 22, 1:34 PM MST	Severe Thunderstorm Warning	FGZ	26 min
Aug 22, 2:01 PM MST	Severe Thunderstorm Warning	FGZ	20 min
Aug 22, 2:40 PM MST	Areal Flood Advisory	FGZ	23 hr
Aug 22, 4:09 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 22, 4:12 PM MST	Severe Thunderstorm Warning	FGZ	48 min
Aug 22, 4:34 PM MST	Severe Thunderstorm Warning	FGZ	41 min
Aug 22, 4:47 PM MST	Flash Flood Warning Considerable damage threat	FGZ	4 hr
Aug 23, 12:37 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 23, 2:03 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 23, 2:33 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 23, 2:35 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 24, 3:58 PM MST	Flash Flood Warning Considerable damage threat	FGZ	100 min
Aug 24, 4:26 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 25, 5:55 PM MST	Areal Flood Advisory	FGZ	3 hr
Aug 26, 12:38 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 27, 1:52 PM MST	Areal Flood Advisory	FGZ	3 hr
Aug 31, 1:56 PM MST	Flood Watch	FGZ	56 hr
Aug 31, 5:38 PM MST	Severe Thunderstorm Warning	FGZ	52 min
Sep 2, 12:07 PM MST	Areal Flood Advisory	FGZ	3 hr
Sep 2, 1:37 PM MST	Flash Flood Warning Considerable damage threat	FGZ	8 hr
Sep 2, 2:52 PM MST	Areal Flood Advisory	FGZ	3 hr
Sep 2, 3:08 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Sep 2, 4:08 PM MST	Areal Flood Advisory	FGZ	3 hr
Sep 2, 5:07 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Sep 12, 10:54 AM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Sep 13, 12:15 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Sep 13, 2:16 PM MST	Severe Thunderstorm Warning	FGZ	29 min
Sep 13, 2:45 PM MST	Severe Thunderstorm Warning	FGZ	15 min
Sep 13, 3:01 PM MST	Severe Thunderstorm Warning	FGZ	29 min
Sep 13, 3:10 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Sep 13, 4:51 PM MST	Flash Flood Warning Considerable damage threat	FGZ	6 hr
Sep 13, 6:15 PM MST	Areal Flood Advisory	FGZ	2 hr
Sep 15, 2:57 PM MST	Severe Thunderstorm Warning	FGZ	48 min
Sep 28, 12:48 PM MST	Wind Advisory	FGZ	3 days
Sep 29, 12:28 PM MST	Wind Advisory	FGZ	56 hr
Oct 10, 12:51 PM MST	Wind Advisory	FGZ	29 hr
Oct 12, 1:46 AM MST	Freeze Warning	FGZ	30 hr
Oct 28, 2:14 AM MST	Freeze Watch	FGZ	23 hr
Oct 29, 1:23 AM MST	Freeze Warning	FGZ	32 hr
Nov 6, 12:20 PM MST	Wind Advisory	FGZ	31 hr
Nov 6, 1:52 PM MST	Red Flag Warning	FGZ	27 hr
Nov 18, 12:50 PM MST	Wind Advisory	FGZ	29 hr
Nov 18, 1:36 PM MST	Winter Weather Advisory	FGZ	36 hr
Nov 23, 1:02 PM MST	Wind Advisory	FGZ	29 hr
Nov 23, 1:27 PM MST	Winter Weather Advisory	FGZ	28 hr
Nov 29, 3:33 AM MST	Winter Weather Advisory	FGZ	65 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	43
Mesoscale Discussion	1
Special Weather Statement	12
Flooding
Areal Flood Warning	7
Flash Flood Warning	40
River Flood Warning	2
Flood Watch	6
Areal Flood Advisory	29
River Flood Advisory	2
Winter
Snow Squall Warning	1
Winter Storm Warning	7
Winter Storm Watch	3
Winter Weather Advisory	17
Heat
Excessive Heat Warning	2
Excessive Heat Watch	1
Heat Advisory	1
Cold
Freeze Warning	2
Freeze Watch	1
Wind and dust
High Wind Warning	2
High Wind Watch	2
Wind Advisory	21
Fire
Red Flag Warning	9
Fire Weather Watch	5

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. Warning verification from the Mesonet's Cow. Rebuilt daily.