Weather alerts in Graham County, Arizona, 2018

155 weather alerts in 2018, 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 2018. Tap one for its archive.

Alerts: 155
Warnings: 51
Watches: 26
Advisories: 52
Busiest month: August37 alerts
Busiest day: July 19, 20187 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, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	10	1	90%	1	100%	3 min
Flash flood warnings	9	0	100%	0

Each office's whole area, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Tucson, AZ: severe thunderstorm warnings	114	23	80%	44	82%	17 min
NWS Tucson, AZ: flash flood warnings	49	4	92%	11	64%	20 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 9, 2:58 AM MST	Wind Advisory	TWC	26 hr
Feb 9, 10:40 AM MST	Fire Weather Watch	TWC	17 hr
Feb 10, 3:28 AM MST	Red Flag Warning	TWC	15 hr
Feb 11, 3:16 AM MST	Fire Weather Watch	TWC	11 hr
Feb 11, 2:10 PM MST	Red Flag Warning	TWC	29 hr
Feb 16, 10:51 PM MST	Dense Fog Advisory	TWC	12 hr
Feb 18, 2:33 PM MST	Wind Advisory	TWC	32 hr
Feb 18, 2:35 PM MST	Winter Weather Advisory	TWC	38 hr
Feb 27, 2:58 AM MST	Winter Weather Advisory	TWC	32 hr
Mar 23, 2:57 PM MST	Fire Weather Watch	TWC	35 hr
Mar 23, 2:57 PM MST	Red Flag Warning	TWC	23 hr
Mar 25, 2:23 PM MST	Fire Weather Watch	TWC	12 hr
Apr 7, 2:08 PM MST	Red Flag Warning	TWC	28 hr
Apr 9, 2:51 PM MST	Fire Weather Watch	TWC	19 hr
Apr 10, 9:03 AM MST	Wind Advisory	TWC	59 hr
Apr 10, 9:27 AM MST	Fire Weather Watch	TWC	42 hr
Apr 10, 9:27 AM MST	Red Flag Warning	TWC	60 hr
Apr 10, 3:03 PM MST	High Wind Watch	TWC	24 hr
Apr 11, 2:44 PM MST	High Wind Warning	TWC	29 hr
Apr 11, 2:44 PM MST	Wind Advisory	TWC	52 hr
Apr 12, 3:27 AM MST	Red Flag Warning	TWC	40 hr
Apr 12, 3:28 AM MST	Freeze Watch	TWC	33 hr
Apr 13, 12:54 PM MST	Freeze Warning	TWC	20 hr
Apr 14, 1:16 PM MST	Fire Weather Watch	TWC	14 hr
Apr 15, 3:30 AM MST	Red Flag Warning	TWC	41 hr
Apr 15, 2:47 PM MST	Fire Weather Watch	TWC	23 hr
Apr 16, 2:13 PM MST	Red Flag Warning	TWC	29 hr
Apr 17, 2:48 AM MST	Fire Weather Watch	TWC	36 hr
Apr 18, 2:32 PM MST	Red Flag Warning	TWC	29 hr
Apr 28, 2:15 PM MST	Fire Weather Watch	TWC	24 hr
Apr 28, 2:15 PM MST	Red Flag Warning	TWC	29 hr
Apr 29, 2:09 PM MST	Fire Weather Watch	TWC	24 hr
Apr 29, 2:09 PM MST	Red Flag Warning	TWC	29 hr
Apr 30, 2:21 PM MST	Fire Weather Watch	TWC	36 hr
Apr 30, 2:21 PM MST	Red Flag Warning	TWC	29 hr
Apr 30, 2:37 PM MST	Wind Advisory	TWC	28 hr
May 9, 2:20 AM MST	Fire Weather Watch	TWC	24 hr
May 9, 2:20 AM MST	Fire Weather Watch	TWC	60 hr
May 10, 2:29 AM MST	Red Flag Warning	TWC	42 hr
May 10, 3:05 AM MST	Wind Advisory	TWC	41 hr
May 11, 2:17 PM MST	Red Flag Warning	TWC	30 hr
May 12, 2:06 AM MST	Wind Advisory	TWC	18 hr
May 12, 3:25 PM MST	Red Flag Warning	TWC	27 hr
May 16, 2:04 PM MST	Red Flag Warning	TWC	29 hr
May 20, 2:23 PM MST	Red Flag Warning	TWC	29 hr
May 21, 2:26 PM MST	Red Flag Warning	TWC	29 hr
May 24, 2:14 AM MST	Fire Weather Watch	TWC	24 hr
May 25, 1:51 AM MST	Red Flag Warning	TWC	41 hr
Jun 12, 3:28 AM MST	Excessive Heat Warning	TWC	41 hr
Jun 19, 3:15 AM MST	Excessive Heat Watch	TWC	47 hr
Jun 21, 2:30 AM MST	Excessive Heat Warning	TWC	42 hr
Jun 29, 4:31 PM MST	Areal Flood Advisory	TWC	119 min
Jun 29, 5:57 PM MST	Flash Flood Warning	TWC	3 hr
Jul 4, 3:35 AM MST	Excessive Heat Warning	TWC	39 hr
Jul 7, 2:35 PM MST	Special Weather Statement	TWC	85 min
Jul 9, 1:51 PM MST	Mesoscale Discussion	SPC	2 hr
Jul 11, 1:46 AM MST	Areal Flood Advisory	TWC	119 min
Jul 11, 11:16 AM MST	Flash Flood Watch	TWC	9 hr
Jul 12, 2:29 PM MST	Areal Flood Advisory	TWC	2 hr
Jul 12, 5:11 PM MST	Areal Flood Advisory	TWC	94 min
Jul 12, 6:18 PM MST	Areal Flood Advisory	TWC	87 min
Jul 12, 6:52 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 13, 1:50 PM MST	Special Weather Statement	TWC	55 min
Jul 14, 12:07 PM MST	Areal Flood Advisory	TWC	113 min
Jul 15, 9:35 AM MST	Flash Flood Watch	TWC	9 hr
Jul 16, 10:45 PM MST	Flash Flood Warning	TWC	3 hr
Jul 19, 2:18 PM MST	Excessive Heat Watch	TWC	13 hr
Jul 19, 3:26 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 19, 3:32 PM MST	Special Weather Statement	TWC	43 min
Jul 19, 4:21 PM MST	Special Weather Statement	TWC	39 min
Jul 19, 4:24 PM MST	Severe Thunderstorm Warning	TWC	51 min
Jul 19, 4:52 PM MST	Areal Flood Advisory	TWC	83 min
Jul 19, 4:53 PM MST	Special Weather Statement	TWC	37 min
Jul 19, 5:02 PM MST	Severe Thunderstorm Warning	TWC	43 min
Jul 19, 5:05 PM MST	Flash Flood Warning	TWC	85 min
Jul 19, 5:39 PM MST	Areal Flood Advisory	TWC	111 min
Jul 19, 5:45 PM MST	Severe Thunderstorm Warning	TWC	60 min
Jul 20, 3:38 AM MST	Excessive Heat Warning	TWC	6 days
Jul 21, 4:47 PM MST	Special Weather Statement	TWC	28 min
Jul 26, 3:22 PM MST	Special Weather Statement	TWC	23 min
Jul 26, 3:28 PM MST	Special Weather Statement	TWC	47 min
Jul 26, 3:57 PM MST	Mesoscale Discussion	SPC	63 min
Jul 29, 1:29 AM MST	Areal Flood Advisory	TWC	3 hr
Jul 30, 3:05 PM MST	Special Weather Statement	TWC	85 min
Jul 30, 4:16 PM MST	Areal Flood Advisory	TWC	119 min
Jul 30, 4:39 PM MST	Severe Thunderstorm Warning	TWC	51 min
Aug 1, 5:00 PM MST	Special Weather Statement	TWC	30 min
Aug 3, 2:45 PM MST	Areal Flood Advisory	TWC	60 min
Aug 3, 3:07 PM MST	Flash Flood Warning	TWC	3 hr
Aug 4, 2:50 AM MST	Excessive Heat Watch	TWC	12 hr
Aug 4, 2:30 PM MST	Excessive Heat Warning	TWC	54 hr
Aug 6, 4:42 PM MST	Severe Thunderstorm Warning	TWC	48 min
Aug 7, 2:59 AM MST	Excessive Heat Warning	TWC	17 hr
Aug 7, 3:49 PM MST	Special Weather Statement	TWC	26 min
Aug 7, 5:23 PM MST	Special Weather Statement	TWC	52 min
Aug 8, 3:13 PM MST	Special Weather Statement	TWC	77 min
Aug 8, 4:07 PM MST	Mesoscale Discussion	SPC	2 hr
Aug 8, 4:35 PM MST	Severe Thunderstorm Warning	TWC	40 min
Aug 8, 4:58 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 8, 6:01 PM MST	Severe Thunderstorm Warning	TWC	44 min
Aug 8, 7:05 PM MST	Areal Flood Advisory	TWC	115 min
Aug 12, 12:07 AM MST	Areal Flood Advisory	TWC	3 hr
Aug 12, 12:34 AM MST	Flash Flood Warning	TWC	116 min
Aug 14, 3:50 PM MST	Special Weather Statement	TWC	70 min
Aug 14, 5:29 PM MST	Special Weather Statement	TWC	31 min
Aug 14, 5:45 PM MST	Severe Thunderstorm Warning	TWC	30 min
Aug 14, 6:00 PM MST	Mesoscale Discussion	SPC	90 min
Aug 14, 6:11 PM MST	Severe Thunderstorm Warning	TWC	49 min
Aug 14, 6:55 PM MST	Special Weather Statement	TWC	50 min
Aug 14, 7:22 PM MST	Flash Flood Warning	TWC	3 hr
Aug 16, 11:19 AM MST	Flash Flood Watch	TWC	9 hr
Aug 21, 4:01 AM MST	Areal Flood Advisory	TWC	3 hr
Aug 21, 4:10 AM MST	Special Weather Statement	TWC	50 min
Aug 21, 1:30 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 21, 2:39 PM MST	Flash Flood Warning	TWC	3 hr
Aug 21, 2:59 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 22, 2:29 PM MST	Areal Flood Advisory	TWC	5 hr
Aug 23, 9:42 AM MST	Flash Flood Watch	TWC	10 hr
Aug 23, 1:18 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 24, 3:37 AM MST	Flash Flood Watch	TWC	20 hr
Aug 24, 2:10 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 24, 4:42 PM MST	Areal Flood Advisory	TWC	2 hr
Aug 24, 4:48 PM MST	Areal Flood Advisory	TWC	117 min
Sep 1, 12:41 AM MST	Special Weather Statement	TWC	34 min
Sep 1, 1:42 AM MST	Special Weather Statement	TWC	33 min
Sep 1, 2:27 AM MST	Severe Thunderstorm Warning	TWC	48 min
Sep 1, 10:30 AM MST	Special Weather Statement	TWC	45 min
Sep 1, 11:26 AM MST	Areal Flood Advisory	TWC	2 hr
Sep 1, 1:10 PM MST	Flash Flood Warning	TWC	110 min
Sep 1, 10:08 PM MST	Areal Flood Advisory	TWC	82 min
Sep 1, 10:38 PM MST	Areal Flood Advisory	TWC	112 min
Sep 2, 3:38 AM MST	Areal Flood Advisory	TWC	3 hr
Sep 2, 4:51 AM MST	Areal Flood Advisory	TWC	114 min
Sep 2, 5:24 AM MST	Areal Flood Advisory	TWC	96 min
Sep 2, 6:47 PM MST	Areal Flood Advisory	TWC	118 min
Sep 2, 8:57 PM MST	Flash Flood Warning	TWC	3 hr
Sep 18, 11:06 AM MST	Flash Flood Watch	TWC	36 hr
Sep 19, 5:07 PM MST	Areal Flood Advisory	TWC	113 min
Sep 19, 7:05 PM MST	Areal Flood Advisory	TWC	115 min
Sep 20, 6:57 AM MST	Dense Fog Advisory	TWC	2 hr
Oct 16, 3:05 AM MST	Areal Flood Advisory	TWC	3 hr
Oct 22, 1:12 PM MST	Mesoscale Discussion	SPC	63 min
Oct 23, 10:00 AM MST	Areal Flood Advisory	TWC	3 hr
Oct 23, 11:05 AM MST	Mesoscale Discussion	SPC	115 min
Oct 31, 2:23 AM MST	Freeze Warning	TWC	30 hr
Nov 11, 2:07 AM MST	Freeze Warning	TWC	30 hr
Nov 11, 2:07 AM MST	Hard Freeze Warning	TWC	54 hr
Nov 28, 2:39 PM MST	Winter Weather Advisory	TWC	43 hr
Dec 5, 2:08 PM MST	Winter Weather Advisory	TWC	54 hr
Dec 7, 2:50 AM MST	Dense Fog Advisory	TWC	6 hr
Dec 24, 2:11 PM MST	Winter Weather Advisory	TWC	51 hr
Dec 27, 3:06 AM MST	Winter Weather Advisory	TWC	32 hr
Dec 27, 5:40 PM MST	Winter Storm Warning	TWC	11 hr
Dec 29, 10:15 AM MST	Winter Weather Advisory	TWC	17 hr
Dec 30, 2:03 PM MST	Winter Storm Warning	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	10
Mesoscale Discussion	6
Special Weather Statement	20
Flooding
Flash Flood Warning	9
Flash Flood Watch	6
Areal Flood Advisory	35
Winter
Winter Storm Warning	2
Winter Weather Advisory	7
Heat
Excessive Heat Warning	6
Excessive Heat Watch	3
Cold
Freeze Warning	3
Hard Freeze Warning	1
Freeze Watch	1
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	7
Fire
Red Flag Warning	19
Fire Weather Watch	15
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 2017 2019

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.