Alert archive / Arizona / Coconino County

Weather alerts in Coconino County, Arizona, 2020

107 weather alerts in 2020, 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 2020. Tap one for its archive.

Alerts: 107
Warnings: 52
Watches: 17
Advisories: 31
Busiest month: June26 alerts
Busiest day: June 6, 20206 alerts

Over time

By month

Warning verification

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

0 of 2 tornado reports fell inside a warning.

Coconino County, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning
Tornado warnings	0			2	0%
Severe thunderstorm warnings	10	0	100%	2	0%
Flash flood warnings	7	0	100%	0

Each office's whole area, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Flagstaff, AZ: tornado warnings	0			2	0%
NWS Flagstaff, AZ: severe thunderstorm warnings	55	5	91%	11	36%	19 min
NWS Flagstaff, AZ: flash flood warnings	17	2	88%	8	25%	114 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
Feb 1, 2:13 PM MST	High Wind Watch	FGZ	13 hr
Feb 2, 3:00 AM MST	High Wind Warning	FGZ	39 hr
Feb 2, 3:00 AM MST	Wind Advisory	FGZ	37 hr
Feb 9, 2:46 PM MST	Winter Weather Advisory	FGZ	57 hr
Mar 11, 3:31 AM MST	Flash Flood Watch	FGZ	64 hr
Mar 11, 9:32 AM MST	Areal Flood Advisory	FGZ	3 hr
Mar 11, 10:47 AM MST	Areal Flood Advisory	FGZ	3 hr
Mar 11, 3:41 PM MST	Areal Flood Advisory	FGZ	56 hr
Mar 12, 11:13 AM MST	Areal Flood Advisory	FGZ	34 hr
Mar 13, 3:17 AM MST	Areal Flood Advisory	FGZ	3 hr
Mar 13, 4:11 PM MST	Snow Squall Warning	FGZ	34 min
Mar 13, 4:57 PM MST	Snow Squall Warning	FGZ	48 min
Mar 13, 5:42 PM MST	Snow Squall Warning	FGZ	33 min
Mar 16, 3:06 PM MST	Winter Storm Watch	FGZ	24 hr
Mar 17, 2:38 PM MST	Winter Storm Warning	FGZ	39 hr
Mar 22, 1:59 PM MST	Wind Advisory	FGZ	29 hr
Mar 25, 2:07 PM MST	Wind Advisory	FGZ	29 hr
Apr 2, 2:46 AM MST	Wind Advisory	FGZ	15 hr
Apr 21, 10:18 AM MST	Special Weather Statement	FGZ	57 min
Apr 21, 11:55 AM MST	Special Weather Statement	FGZ	35 min
Apr 21, 1:34 PM MST	Special Weather Statement	FGZ	41 min
May 9, 6:11 PM MST	Severe Thunderstorm Warning	FGZ	34 min
May 17, 2:58 AM MST	Fire Weather Watch	FGZ	11 hr
May 17, 2:01 PM MST	Fire Weather Watch	FGZ	24 hr
May 17, 2:01 PM MST	Red Flag Warning	FGZ	30 hr
May 17, 2:16 PM MST	Wind Advisory	FGZ	28 hr
May 18, 1:58 PM MST	Red Flag Warning	FGZ	29 hr
May 18, 2:06 PM MST	Wind Advisory	FGZ	29 hr
May 21, 1:15 PM MST	Red Flag Warning	FGZ	29 hr
May 26, 2:51 PM MST	Excessive Heat Warning	FGZ	3 days
Jun 4, 5:00 AM MST	Fire Weather Watch	FGZ	9 hr
Jun 4, 1:42 PM MST	Red Flag Warning	FGZ	30 hr
Jun 5, 7:39 PM MST	Special Weather Statement	FGZ	66 min
Jun 5, 10:02 PM MST	Wind Advisory	FGZ	19 hr
Jun 6, 3:33 AM MST	Fire Weather Watch	FGZ	10 hr
Jun 6, 3:33 AM MST	Red Flag Warning	FGZ	16 hr
Jun 6, 12:44 PM MST	Wind Advisory	FGZ	30 hr
Jun 6, 1:46 PM MST	Red Flag Warning	FGZ	29 hr
Jun 7, 3:40 AM MST	Fire Weather Watch	FGZ	10 hr
Jun 7, 1:37 PM MST	Wind Advisory	FGZ	29 hr
Jun 7, 2:06 PM MST	Red Flag Warning	FGZ	29 hr
Jun 10, 2:43 PM MST	Fire Weather Watch	FGZ	23 hr
Jun 11, 3:09 AM MST	Fire Weather Watch	FGZ	11 hr
Jun 11, 1:54 PM MST	Red Flag Warning	FGZ	29 hr
Jun 11, 1:54 PM MST	Red Flag Warning	FGZ	53 hr
Jun 13, 12:34 AM MST	Wind Advisory	FGZ	18 hr
Jun 13, 2:16 PM MST	Fire Weather Watch	FGZ	12 hr
Jun 14, 2:02 AM MST	Fire Weather Watch	FGZ	12 hr
Jun 14, 2:02 AM MST	Red Flag Warning	FGZ	17 hr
Jun 14, 1:55 PM MST	Red Flag Warning	FGZ	54 hr
Jun 15, 2:48 PM MST	Wind Advisory	FGZ	29 hr
Jun 17, 2:09 AM MST	Red Flag Warning	FGZ	16 hr
Jun 22, 10:28 AM MST	Excessive Heat Warning	FGZ	58 hr
Jun 26, 4:42 AM MST	Fire Weather Watch	FGZ	23 hr
Jun 27, 3:24 AM MST	Red Flag Warning	FGZ	65 hr
Jun 27, 3:14 PM MST	Wind Advisory	FGZ	53 hr
Jul 3, 4:20 PM MST	Flash Flood Warning	FGZ	2 hr
Jul 3, 4:43 PM MST	Areal Flood Advisory	FGZ	2 hr
Jul 5, 2:28 AM MST	Excessive Heat Warning	FGZ	66 hr
Jul 6, 2:51 AM MST	Fire Weather Watch	FGZ	11 hr
Jul 6, 2:51 AM MST	Red Flag Warning	FGZ	41 hr
Jul 6, 2:01 PM MST	Red Flag Warning	FGZ	54 hr
Jul 7, 2:17 AM MST	Excessive Heat Watch	FGZ	35 hr
Jul 8, 1:40 PM MST	Excessive Heat Warning	FGZ	5 days
Jul 14, 2:12 AM MST	Excessive Heat Warning	FGZ	42 hr
Jul 14, 6:40 PM MST	Areal Flood Advisory	FGZ	3 hr
Jul 17, 2:33 PM MST	Areal Flood Advisory	FGZ	3 hr
Jul 18, 2:12 AM MST	Excessive Heat Warning	FGZ	66 hr
Jul 22, 4:33 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 23, 10:56 AM MST	Severe Thunderstorm Warning	FGZ	28 min
Jul 23, 11:46 AM MST	Special Weather Statement	FGZ	44 min
Jul 23, 1:46 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 23, 2:44 PM MST	Severe Thunderstorm Warning	FGZ	31 min
Jul 23, 5:00 PM MST	Areal Flood Advisory	FGZ	3 hr
Jul 27, 2:24 AM MST	Excessive Heat Watch	FGZ	25 hr
Jul 27, 9:57 AM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 27, 3:18 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 28, 3:44 AM MST	Excessive Heat Warning	FGZ	8 days
Aug 1, 2:40 PM MST	Severe Thunderstorm Warning	FGZ	35 min
Aug 1, 3:07 PM MST	Areal Flood Advisory	FGZ	32 min
Aug 1, 3:38 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 1, 3:59 PM MST	Severe Thunderstorm Warning	FGZ	46 min
Aug 2, 8:24 PM MST	Excessive Heat Warning	FGZ	48 hr
Aug 6, 2:27 AM MST	Red Flag Warning	FGZ	16 hr
Aug 10, 8:02 AM MST	Excessive Heat Warning	FGZ	12 hr
Aug 11, 2:25 AM MST	Excessive Heat Warning	FGZ	18 hr
Aug 12, 1:07 PM MST	Excessive Heat Warning	FGZ	9 days
Aug 18, 1:29 PM MST	Severe Thunderstorm Warning	FGZ	31 min
Aug 22, 1:55 PM MST	Severe Thunderstorm Warning	FGZ	50 min
Aug 22, 4:04 PM MST	Special Weather Statement	FGZ	41 min
Aug 22, 5:16 PM MST	Severe Thunderstorm Warning	FGZ	44 min
Aug 22, 5:51 PM MST	Flash Flood Warning Considerable damage threat	FGZ	2 hr
Aug 23, 3:19 PM MST	Severe Thunderstorm Warning	FGZ	26 min
Aug 23, 5:33 PM MST	Special Weather Statement	FGZ	27 min
Aug 25, 1:37 PM MST	Areal Flood Advisory	FGZ	117 min
Sep 1, 1:22 PM MST	Excessive Heat Watch	FGZ	24 hr
Sep 2, 1:07 PM MST	Excessive Heat Warning	FGZ	5 days
Sep 8, 1:10 PM MST	Severe Thunderstorm Warning	FGZ	34 min
Oct 24, 3:29 AM MST	Wind Advisory	FGZ	39 hr
Oct 26, 2:45 AM MST	Freeze Warning	FGZ	30 hr
Nov 6, 2:21 PM MST	Wind Advisory	FGZ	36 hr
Nov 6, 2:21 PM MST	Winter Weather Advisory	FGZ	69 hr
Nov 8, 2:04 AM MST	Wind Advisory	FGZ	18 hr
Nov 8, 12:56 PM MST	Winter Storm Warning	FGZ	13 hr
Dec 12, 2:28 AM MST	Wind Advisory	FGZ	19 hr
Dec 17, 3:09 AM MST	Wind Advisory	FGZ	23 hr
Dec 27, 1:32 PM MST	Wind Advisory	FGZ	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	10
Special Weather Statement	7
Flooding
Flash Flood Warning	7
Flash Flood Watch	1
Areal Flood Advisory	11
Winter
Snow Squall Warning	3
Winter Storm Warning	2
Winter Storm Watch	1
Winter Weather Advisory	2
Heat
Excessive Heat Warning	12
Excessive Heat Watch	3
Cold
Freeze Warning	1
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	18
Fire
Red Flag Warning	16
Fire Weather Watch	11

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2019 2021

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.