Weather alerts in Graham County, Arizona, 2015

117 weather alerts in 2015, 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 2015. Tap one for its archive.

Alerts: 117
Warnings: 36
Watches: 7
Advisories: 38
Busiest month: August22 alerts
Busiest day: August 7, 20158 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 1 tornado reports fell inside a warning.

Graham County, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			1	0%
Severe thunderstorm warnings	17	6	65%	5	80%	15 min
Flash flood warnings	4	0	100%	0

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Tucson, AZ: tornado warnings	1	0	100%	1	0%
NWS Tucson, AZ: severe thunderstorm warnings	123	29	76%	80	55%	16 min
NWS Tucson, AZ: flash flood warnings	51	6	88%	10	60%	43 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, 1:34 AM MST	Dense Fog Advisory	TWC	7 hr
Jan 12, 9:37 AM MST	Winter Weather Advisory	TWC	10 hr
Jan 12, 2:30 PM MST	Winter Weather Advisory	TWC	39 hr
Jan 28, 3:32 AM MST	Winter Storm Watch	TWC	33 hr
Jan 29, 12:37 PM MST	Winter Storm Warning	TWC	52 hr
Jan 30, 8:32 AM MST	Areal Flood Advisory	TWC	118 min
Jan 30, 10:40 AM MST	Areal Flood Advisory	TWC	3 hr
Feb 1, 1:29 AM MST	Dense Fog Advisory	TWC	11 hr
Feb 11, 2:36 PM MST	Wind Advisory	TWC	25 hr
Mar 1, 8:11 PM MST	Winter Storm Warning	TWC	29 hr
Mar 2, 2:59 AM MST	Wind Advisory	TWC	16 hr
Mar 15, 10:23 AM MST	Wind Advisory	TWC	5 hr
Mar 31, 2:15 PM MST	Fire Weather Watch	TWC	24 hr
Apr 1, 2:10 PM MST	Red Flag Warning	TWC	30 hr
Apr 4, 3:14 PM MST	Fire Weather Watch	TWC	24 hr
Apr 5, 2:56 PM MST	Red Flag Warning	TWC	29 hr
Apr 5, 2:56 PM MST	Red Flag Warning	TWC	53 hr
Apr 7, 1:57 PM MST	Red Flag Warning	TWC	25 hr
Apr 14, 4:03 AM MST	Red Flag Warning	TWC	41 hr
Apr 16, 2:28 AM MST	Freeze Warning	TWC	30 hr
Apr 16, 8:02 AM MST	Red Flag Warning	TWC	11 hr
Apr 18, 2:39 AM MST	Red Flag Warning	TWC	16 hr
May 13, 1:15 PM MST	Wind Advisory	TWC	30 hr
May 13, 1:15 PM MST	Wind Advisory	TWC	53 hr
May 15, 1:30 PM MST	Winter Weather Advisory	TWC	23 hr
May 22, 2:45 AM MST	Red Flag Warning	TWC	16 hr
Jun 9, 2:34 PM MST	Special Weather Statement	TWC	41 min
Jun 16, 2:13 PM MST	Special Weather Statement	TWC	77 min
Jun 16, 3:29 PM MST	Special Weather Statement	TWC	61 min
Jun 16, 4:07 PM MST	Severe Thunderstorm Warning	TWC	38 min
Jun 16, 5:25 PM MST	Severe Thunderstorm Warning	TWC	35 min
Jun 19, 2:20 AM MST	Excessive Heat Warning	TWC	40 hr
Jun 24, 3:27 PM MST	Severe Thunderstorm Warning	TWC	33 min
Jun 24, 3:29 PM MST	Mesoscale Discussion	SPC	3 hr
Jun 25, 2:55 PM MST	Special Weather Statement	TWC	50 min
Jun 26, 5:34 PM MST	Severe Thunderstorm Warning	TWC	41 min
Jun 27, 2:01 PM MST	Mesoscale Discussion	SPC	2 hr
Jun 27, 3:30 PM MST	Special Weather Statement	TWC	45 min
Jun 28, 12:17 PM MST	Mesoscale Discussion	SPC	58 min
Jun 28, 3:57 PM MST	Special Weather Statement	TWC	63 min
Jun 30, 1:25 PM MST	Mesoscale Discussion	SPC	95 min
Jul 1, 1:05 PM MST	Mesoscale Discussion	SPC	2 hr
Jul 3, 1:34 AM MST	Special Weather Statement	TWC	41 min
Jul 3, 2:24 AM MST	Areal Flood Advisory	TWC	111 min
Jul 7, 3:49 PM MST	Special Weather Statement	TWC	41 min
Jul 10, 2:38 PM MST	Severe Thunderstorm Warning	TWC	52 min
Jul 11, 12:47 PM MST	Mesoscale Discussion	SPC	118 min
Jul 11, 1:39 PM MST	Special Weather Statement	TWC	51 min
Jul 11, 2:24 PM MST	Severe Thunderstorm Warning	TWC	36 min
Jul 11, 3:04 PM MST	Special Weather Statement	TWC	56 min
Jul 11, 5:54 PM MST	Special Weather Statement	TWC	36 min
Jul 11, 6:24 PM MST	Special Weather Statement	TWC	51 min
Jul 11, 7:25 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 12, 2:01 PM MST	Severe Thunderstorm Warning	TWC	29 min
Jul 12, 2:28 PM MST	Severe Thunderstorm Warning	TWC	47 min
Jul 12, 2:41 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 12, 3:43 PM MST	Flash Flood Warning	TWC	2 hr
Jul 16, 2:41 PM MST	Flash Flood Watch	TWC	54 hr
Jul 22, 1:36 PM MST	Areal Flood Advisory	TWC	114 min
Jul 29, 5:01 PM MST	Areal Flood Advisory	TWC	59 min
Jul 29, 8:48 PM MST	Areal Flood Advisory	TWC	117 min
Jul 29, 10:30 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 1, 4:18 PM MST	Areal Flood Advisory	TWC	117 min
Aug 7, 11:21 AM MST	Severe Thunderstorm Warning	TWC	24 min
Aug 7, 11:39 AM MST	Areal Flood Advisory	TWC	111 min
Aug 7, 12:01 PM MST	Mesoscale Discussion	SPC	89 min
Aug 7, 12:11 PM MST	Special Weather Statement	TWC	49 min
Aug 7, 12:43 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 7, 12:57 PM MST	Severe Thunderstorm Warning	TWC	33 min
Aug 7, 1:02 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 7, 1:36 PM MST	Flash Flood Warning	TWC	3 hr
Aug 8, 1:03 AM MST	Areal Flood Advisory	TWC	3 hr
Aug 8, 12:27 PM MST	Mesoscale Discussion	SPC	93 min
Aug 11, 3:23 PM MST	Severe Thunderstorm Warning	TWC	37 min
Aug 11, 5:32 PM MST	Severe Thunderstorm Warning	TWC	28 min
Aug 11, 5:59 PM MST	Severe Thunderstorm Warning	TWC	46 min
Aug 12, 4:22 PM MST	Areal Flood Advisory	TWC	113 min
Aug 16, 2:38 PM MST	Special Weather Statement	TWC	52 min
Aug 22, 6:23 PM MST	Special Weather Statement	TWC	52 min
Aug 24, 11:23 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 25, 2:23 AM MST	Areal Flood Advisory	TWC	112 min
Aug 25, 4:07 AM MST	Areal Flood Advisory	TWC	3 hr
Aug 25, 4:45 PM MST	Severe Thunderstorm Warning	TWC	30 min
Aug 26, 5:30 PM MST	Areal Flood Advisory	TWC	2 hr
Aug 31, 8:33 PM MST	Areal Flood Advisory	TWC	117 min
Aug 31, 10:42 PM MST	Areal Flood Advisory	TWC	108 min
Sep 20, 1:34 PM MST	Flash Flood Watch	TWC	35 hr
Sep 21, 1:35 PM MST	Areal Flood Advisory	TWC	3 hr
Sep 21, 3:28 PM MST	Flash Flood Warning	TWC	3 hr
Sep 21, 6:40 PM MST	Areal Flood Advisory	TWC	3 hr
Sep 22, 6:35 AM MST	Dense Fog Advisory	TWC	2 hr
Sep 22, 12:33 PM MST	Special Weather Statement	TWC	42 min
Oct 4, 4:56 PM MST	Special Weather Statement	TWC	34 min
Oct 4, 5:32 PM MST	Special Weather Statement	TWC	28 min
Oct 4, 5:54 PM MST	Flash Flood Warning	TWC	111 min
Oct 5, 12:55 PM MST	Mesoscale Discussion	SPC	3 hr
Oct 6, 10:50 AM MST	Mesoscale Discussion	SPC	55 min
Oct 6, 10:55 AM MST	Special Weather Statement	TWC	65 min
Oct 6, 2:43 PM MST	Severe Thunderstorm Warning	TWC	32 min
Oct 18, 12:52 PM MST	Mesoscale Discussion	SPC	2 hr
Oct 18, 4:42 PM MST	Special Weather Statement	TWC	33 min
Oct 18, 5:33 PM MST	Special Weather Statement	TWC	42 min
Oct 20, 9:29 AM MST	Mesoscale Discussion	SPC	2 hr
Oct 20, 9:29 AM MST	Special Weather Statement	TWC	46 min
Oct 20, 10:23 AM MST	Severe Thunderstorm Watch	SPC	9 hr
Oct 20, 1:47 PM MST	Mesoscale Discussion	SPC	73 min
Oct 20, 6:35 PM MST	Mesoscale Discussion	SPC	55 min
Oct 21, 1:02 AM MST	Severe Thunderstorm Warning	TWC	43 min
Oct 21, 2:00 AM MST	Severe Thunderstorm Warning	TWC	45 min
Nov 4, 2:45 PM MST	Freeze Watch	TWC	11 hr
Nov 5, 2:10 AM MST	Freeze Warning	TWC	30 hr
Nov 9, 2:38 PM MST	Wind Advisory	TWC	26 hr
Nov 11, 9:19 AM MST	Freeze Warning	TWC	23 hr
Nov 11, 9:19 AM MST	Hard Freeze Warning	TWC	23 hr
Nov 15, 12:45 PM MST	Wind Advisory	TWC	26 hr
Dec 11, 3:03 AM MST	Wind Advisory	TWC	16 hr
Dec 11, 6:06 AM MST	Winter Weather Advisory	TWC	35 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	17
Severe Thunderstorm Watch	1
Mesoscale Discussion	14
Special Weather Statement	22
Flooding
Flash Flood Warning	4
Flash Flood Watch	2
Areal Flood Advisory	23
Winter
Winter Storm Warning	2
Winter Storm Watch	1
Winter Weather Advisory	4
Heat
Excessive Heat Warning	1
Cold
Freeze Warning	3
Hard Freeze Warning	1
Freeze Watch	1
Wind and dust
Wind Advisory	8
Fire
Red Flag Warning	8
Fire Weather Watch	2
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 2014 2016

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.