Weather alerts in Graham County, Arizona, 2017

143 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Graham County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts: 143
Warnings: 46
Watches: 22
Advisories: 37
Busiest month: July61 alerts
Busiest day: July 23, 20176 alerts

Over time

By month

Warning verification

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

Graham County, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	11	1	91%	4	25%	5 min
Flash flood warnings	11	2	82%	2	100%	59 min

Each office's whole area, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Tucson, AZ: tornado warnings	2	0	100%	3	0%
NWS Tucson, AZ: severe thunderstorm warnings	81	10	88%	31	35%	17 min
NWS Tucson, AZ: flash flood warnings	67	18	73%	27	85%	64 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 12, 1:30 PM MST	Winter Weather Advisory	TWC	70 hr
Jan 14, 2:34 PM MST	Mesoscale Discussion	SPC	2 hr
Jan 14, 5:02 PM MST	Special Weather Statement	TWC	28 min
Jan 17, 2:10 PM MST	Winter Storm Watch	TWC	24 hr
Jan 18, 1:55 PM MST	Winter Storm Warning	TWC	70 hr
Jan 19, 2:35 PM MST	Wind Advisory	TWC	50 hr
Jan 20, 2:18 PM MST	High Wind Warning	TWC	13 hr
Jan 22, 1:27 PM MST	Winter Weather Advisory	TWC	38 hr
Jan 23, 2:47 AM MST	Freeze Watch	TWC	299 days
Feb 12, 2:08 AM MST	Winter Weather Advisory	TWC	42 hr
Feb 16, 2:11 PM MST	Winter Storm Watch	TWC	18 hr
Feb 17, 8:22 AM MST	Winter Storm Warning	TWC	57 hr
Feb 17, 5:58 PM MST	Wind Advisory	TWC	22 hr
Feb 26, 9:46 AM MST	Winter Weather Advisory	TWC	44 hr
Feb 27, 11:10 AM MST	Winter Storm Warning	TWC	18 hr
Mar 4, 9:46 PM MST	Wind Advisory	TWC	21 hr
Mar 27, 2:18 PM MST	Red Flag Warning	TWC	19 hr
Mar 27, 2:18 PM MST	Wind Advisory	TWC	23 hr
Mar 30, 10:18 AM MST	Wind Advisory	TWC	31 hr
Mar 30, 3:25 PM MST	Red Flag Warning	TWC	22 hr
Apr 7, 2:37 AM MST	Fire Weather Watch	TWC	11 hr
Apr 7, 1:51 PM MST	Red Flag Warning	TWC	29 hr
Apr 22, 2:34 PM MST	Fire Weather Watch	TWC	25 hr
Apr 23, 3:21 PM MST	Fire Weather Watch	TWC	24 hr
Apr 23, 3:21 PM MST	Red Flag Warning	TWC	28 hr
Apr 24, 3:01 PM MST	Wind Advisory	TWC	29 hr
Apr 24, 3:26 PM MST	Red Flag Warning	TWC	29 hr
Apr 26, 2:24 PM MST	Fire Weather Watch	TWC	13 hr
Apr 26, 2:24 PM MST	Red Flag Warning	TWC	29 hr
Apr 27, 3:43 AM MST	Red Flag Warning	TWC	40 hr
Apr 27, 1:13 PM MST	Blowing Dust Advisory	TWC	31 hr
Apr 27, 1:13 PM MST	Wind Advisory	TWC	31 hr
Apr 27, 1:24 PM MST	Fire Weather Watch	TWC	26 hr
Apr 28, 2:59 PM MST	Red Flag Warning	TWC	29 hr
Apr 29, 2:14 AM MST	Freeze Warning	TWC	29 hr
May 3, 2:29 PM MST	Fire Weather Watch	TWC	47 hr
May 5, 1:05 PM MST	Red Flag Warning	TWC	30 hr
May 5, 1:09 PM MST	Wind Advisory	TWC	30 hr
May 6, 3:08 PM MST	Blowing Dust Advisory	TWC	4 hr
May 7, 2:20 AM MST	Wind Advisory	TWC	17 hr
May 13, 2:18 AM MST	Fire Weather Watch	TWC	24 hr
May 14, 2:34 AM MST	Red Flag Warning	TWC	40 hr
May 15, 2:11 PM MST	Red Flag Warning	TWC	29 hr
May 23, 3:12 AM MST	Fire Weather Watch	TWC	27 hr
May 23, 3:12 AM MST	Fire Weather Watch	TWC	27 hr
May 24, 6:19 AM MST	Red Flag Warning	TWC	38 hr
May 24, 6:19 AM MST	Red Flag Warning	TWC	62 hr
Jun 2, 2:04 PM MST	Special Weather Statement	TWC	71 min
Jun 9, 3:07 PM MST	Fire Weather Watch	TWC	23 hr
Jun 10, 2:16 PM MST	Red Flag Warning	TWC	29 hr
Jun 12, 2:25 AM MST	Excessive Heat Watch	TWC	50 hr
Jun 12, 2:25 AM MST	Excessive Heat Watch	TWC	50 hr
Jun 12, 2:25 AM MST	Excessive Heat Watch	TWC	50 hr
Jun 14, 4:29 AM MST	Excessive Heat Warning	TWC	12 days
Jun 16, 2:07 AM MST	Heat Advisory	TWC	10 days
Jun 20, 5:38 PM MST	Severe Thunderstorm Warning	TWC	37 min
Jun 25, 8:08 PM MST	Special Weather Statement	TWC	37 min
Jun 26, 5:02 PM MST	Special Weather Statement	TWC	43 min
Jul 7, 5:09 PM MST	Special Weather Statement	TWC	51 min
Jul 9, 3:41 PM MST	Special Weather Statement	TWC	34 min
Jul 9, 7:09 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 10, 1:33 PM MST	Flash Flood Warning	TWC	117 min
Jul 10, 2:01 PM MST	Special Weather Statement	TWC	59 min
Jul 10, 3:05 PM MST	Flash Flood Warning	TWC	3 hr
Jul 12, 4:18 PM MST	Special Weather Statement	TWC	57 min
Jul 12, 5:15 PM MST	Special Weather Statement	TWC	60 min
Jul 12, 5:31 PM MST	Severe Thunderstorm Warning	TWC	44 min
Jul 12, 5:40 PM MST	Areal Flood Advisory	TWC	50 min
Jul 13, 1:36 PM MST	Special Weather Statement	TWC	39 min
Jul 13, 4:42 PM MST	Severe Thunderstorm Warning	TWC	48 min
Jul 13, 6:13 PM MST	Special Weather Statement	TWC	47 min
Jul 14, 2:55 PM MST	Mesoscale Discussion	SPC	65 min
Jul 14, 3:55 PM MST	Special Weather Statement	TWC	35 min
Jul 15, 5:26 PM MST	Special Weather Statement	TWC	49 min
Jul 16, 2:48 AM MST	Flash Flood Watch	TWC	48 hr
Jul 16, 1:25 PM MST	Mesoscale Discussion	SPC	65 min
Jul 16, 2:14 PM MST	Special Weather Statement	TWC	61 min
Jul 16, 8:56 PM MST	Flash Flood Warning	TWC	3 hr
Jul 16, 9:23 PM MST	Special Weather Statement	TWC	67 min
Jul 17, 3:40 PM MST	Severe Thunderstorm Warning	TWC	23 min
Jul 17, 4:02 PM MST	Severe Thunderstorm Warning	TWC	28 min
Jul 18, 9:39 AM MST	Flash Flood Watch	TWC	16 hr
Jul 18, 11:16 AM MST	Mesoscale Discussion	SPC	2 hr
Jul 18, 11:56 AM MST	Special Weather Statement	TWC	49 min
Jul 18, 12:38 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 18, 12:47 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 19, 12:05 PM MST	Mesoscale Discussion	SPC	2 hr
Jul 19, 6:15 PM MST	Dust Storm Warning	TWC	105 min
Jul 19, 8:21 PM MST	Special Weather Statement	TWC	39 min
Jul 19, 9:26 PM MST	Flash Flood Warning	TWC	94 min
Jul 19, 10:54 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 21, 3:05 PM MST	Special Weather Statement	TWC	40 min
Jul 22, 10:21 AM MST	Flash Flood Watch	TWC	10 hr
Jul 22, 1:34 PM MST	Flash Flood Warning	TWC	116 min
Jul 22, 2:44 PM MST	Severe Thunderstorm Warning	TWC	46 min
Jul 22, 3:21 PM MST	Areal Flood Advisory	TWC	114 min
Jul 22, 3:49 PM MST	Special Weather Statement	TWC	41 min
Jul 22, 5:46 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 23, 10:43 AM MST	Flash Flood Watch	TWC	13 hr
Jul 23, 3:47 PM MST	Special Weather Statement	TWC	58 min
Jul 23, 4:10 PM MST	Areal Flood Advisory	TWC	2 hr
Jul 23, 4:18 PM MST	Severe Thunderstorm Warning	TWC	42 min
Jul 23, 4:41 PM MST	Flash Flood Warning	TWC	2 hr
Jul 23, 5:16 PM MST	Severe Thunderstorm Warning	TWC	28 min
Jul 23, 5:53 PM MST	Severe Thunderstorm Warning	TWC	42 min
Jul 23, 6:31 PM MST	Areal Flood Advisory	TWC	119 min
Jul 24, 3:18 PM MST	Special Weather Statement	TWC	42 min
Jul 24, 5:29 PM MST	Flash Flood Warning	TWC	2 hr
Jul 27, 2:24 PM MST	Areal Flood Advisory	TWC	111 min
Jul 27, 2:47 PM MST	Special Weather Statement	TWC	43 min
Jul 27, 4:09 PM MST	Special Weather Statement	TWC	36 min
Jul 27, 4:45 PM MST	Flash Flood Warning	TWC	2 hr
Jul 28, 7:31 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 28, 8:48 PM MST	Areal Flood Advisory	TWC	117 min
Jul 29, 8:14 PM MST	Severe Thunderstorm Warning	TWC	31 min
Jul 29, 8:34 PM MST	Areal Flood Advisory	TWC	116 min
Jul 30, 11:36 AM MST	Flash Flood Warning	TWC	3 hr
Jul 30, 1:09 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 30, 1:17 PM MST	Flash Flood Warning	TWC	3 hr
Aug 1, 3:18 PM MST	Special Weather Statement	TWC	57 min
Aug 1, 5:09 PM MST	Flash Flood Warning	TWC	2 hr
Aug 2, 6:48 PM MST	Special Weather Statement	TWC	42 min
Aug 3, 1:39 PM MST	Areal Flood Advisory	TWC	111 min
Aug 4, 12:58 PM MST	Special Weather Statement	TWC	32 min
Aug 4, 1:35 PM MST	Special Weather Statement	TWC	25 min
Aug 4, 1:58 PM MST	Special Weather Statement	TWC	32 min
Aug 4, 2:12 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 10, 5:54 PM MST	Severe Thunderstorm Warning	TWC	39 min
Aug 11, 10:58 PM MST	Special Weather Statement	TWC	47 min
Aug 12, 12:58 AM MST	Areal Flood Advisory	TWC	2 hr
Aug 12, 11:08 PM MST	Areal Flood Advisory	TWC	2 hr
Aug 13, 12:11 AM MST	Areal Flood Advisory	TWC	2 hr
Aug 26, 2:41 PM MST	Special Weather Statement	TWC	94 min
Aug 26, 5:32 PM MST	Blowing Dust Advisory	TWC	88 min
Aug 28, 2:51 PM MST	Special Weather Statement	TWC	84 min
Sep 4, 3:10 PM MST	Mesoscale Discussion	SPC	3 hr
Sep 29, 2:43 PM MST	Mesoscale Discussion	SPC	2 hr
Nov 17, 2:20 PM MST	Freeze Watch	TWC	13 hr
Nov 18, 3:38 AM MST	Freeze Warning	TWC	25 hr
Nov 18, 3:38 AM MST	Freeze Warning	TWC	52 hr
Dec 6, 3:04 AM MST	Freeze Watch	TWC	24 hr
Dec 7, 2:57 AM MST	Freeze Warning	TWC	30 hr
Dec 16, 2:31 AM MST	Winter Weather Advisory	TWC	47 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	11
Mesoscale Discussion	7
Special Weather Statement	31
Flooding
Flash Flood Warning	11
Flash Flood Watch	4
Areal Flood Advisory	19
Winter
Winter Storm Warning	3
Winter Storm Watch	2
Winter Weather Advisory	5
Heat
Excessive Heat Warning	1
Excessive Heat Watch	3
Heat Advisory	1
Cold
Freeze Warning	4
Freeze Watch	3
Wind and dust
Dust Storm Warning	1
High Wind Warning	1
Blowing Dust Advisory	3
Wind Advisory	9
Fire
Red Flag Warning	14
Fire Weather Watch	10

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2016 2018

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.