Weather alerts in Pima County, Arizona, 2013

243 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Pima County and its neighbors

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts: 243
Warnings: 104
Watches: 12
Advisories: 100
Busiest month: July93 alerts
Busiest day: July 20, 201312 alerts

Over time

By month

Warning verification

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

Pima County, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	53	15	72%	30	63%	19 min
Flash flood warnings	32	7	78%	15	73%	41 min

Each office's whole area, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Tucson, AZ: severe thunderstorm warnings	92	21	77%	54	56%	16 min
NWS Tucson, AZ: flash flood warnings	48	9	81%	23	65%	41 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 3, 3:03 PM MST	Winter Weather Advisory	TWC	7 hr
Jan 6, 11:43 AM MST	Winter Storm Watch	TWC	22 hr
Jan 9, 3:33 PM MST	Hard Freeze Watch	TWC	28 hr
Jan 9, 3:33 PM MST	Wind Advisory	TWC	37 hr
Jan 10, 7:12 PM MST	Hard Freeze Warning	TWC	39 hr
Jan 12, 9:45 AM MST	Hard Freeze Warning	TWC	3 days
Jan 15, 2:26 AM MST	Hard Freeze Warning	TWC	31 hr
Jan 26, 10:38 AM MST	Areal Flood Advisory	TWC	3 hr
Jan 28, 11:08 PM MST	Winter Weather Advisory	TWC	7 hr
Feb 8, 12:54 PM MST	Winter Weather Advisory	TWC	28 hr
Feb 11, 11:52 AM MST	Winter Weather Advisory	TWC	11 hr
Feb 11, 8:37 PM MST	Frost Advisory	TWC	12 hr
Feb 17, 2:28 PM MST	Winter Storm Watch	TWC	24 hr
Feb 18, 1:59 PM MST	Winter Storm Warning	TWC	61 hr
Feb 19, 12:46 PM MST	Wind Advisory	TWC	6 hr
Feb 19, 6:18 PM MST	Blizzard Warning	TWC	27 hr
Feb 20, 10:30 PM MST	Dense Fog Advisory	TWC	9 hr
Feb 23, 2:20 PM MST	Wind Advisory	TWC	29 hr
Mar 7, 3:14 AM MST	Winter Weather Advisory	TWC	58 hr
Mar 8, 12:23 PM MST	Mesoscale Discussion	SPC	97 min
Apr 6, 9:35 PM MST	Wind Advisory	TWC	53 hr
Apr 7, 1:57 PM MST	High Wind Warning	TWC	30 hr
Apr 8, 2:47 AM MST	Blowing Dust Advisory	TWC	17 hr
Apr 14, 2:16 PM MST	Wind Advisory	TWC	30 hr
Apr 14, 2:16 PM MST	Wind Advisory	TWC	54 hr
Apr 17, 3:07 AM MST	Wind Advisory	TWC	15 hr
Jun 25, 3:15 AM MST	Excessive Heat Watch	TWC	24 hr
Jun 26, 3:25 AM MST	Excessive Heat Warning	TWC	5 days
Jun 30, 5:59 PM MST	Severe Thunderstorm Warning	TWC	31 min
Jun 30, 6:33 PM MST	Dust Storm Warning	TWC	2 hr
Jun 30, 7:28 PM MST	Severe Thunderstorm Warning	TWC	77 min
Jul 1, 8:06 PM MST	Severe Thunderstorm Warning	TWC	39 min
Jul 1, 8:17 PM MST	Severe Thunderstorm Warning	TWC	43 min
Jul 2, 5:57 PM MST	Mesoscale Discussion	SPC	2 hr
Jul 2, 8:41 PM MST	Blowing Dust Advisory	TWC	108 min
Jul 2, 9:25 PM MST	Severe Thunderstorm Warning	TWC	50 min
Jul 2, 9:41 PM MST	Dust Storm Warning	TWC	48 min
Jul 5, 12:02 PM MST	Severe Thunderstorm Warning	TWC	28 min
Jul 5, 12:40 PM MST	Severe Thunderstorm Warning	TWC	50 min
Jul 5, 12:47 PM MST	Severe Thunderstorm Warning	TWC	43 min
Jul 5, 1:15 PM MST	Severe Thunderstorm Warning	TWC	30 min
Jul 5, 1:23 PM MST	Severe Thunderstorm Warning	TWC	37 min
Jul 5, 1:37 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 5, 1:48 PM MST	Severe Thunderstorm Warning	TWC	42 min
Jul 5, 2:01 PM MST	Flash Flood Warning	TWC	89 min
Jul 5, 2:27 PM MST	Severe Thunderstorm Warning	TWC	48 min
Jul 5, 5:07 PM MST	Areal Flood Advisory	TWC	113 min
Jul 6, 7:46 PM MST	Special Weather Statement	TWC	59 min
Jul 6, 8:12 PM MST	Areal Flood Advisory	TWC	2 hr
Jul 7, 3:25 PM MST	Severe Thunderstorm Warning	TWC	50 min
Jul 7, 3:51 PM MST	Severe Thunderstorm Warning	TWC	54 min
Jul 8, 7:53 PM MST	Areal Flood Advisory	TWC	112 min
Jul 9, 3:52 PM MST	Severe Thunderstorm Watch	SPC	5 hr
Jul 9, 6:32 PM MST	Mesoscale Discussion	SPC	28 min
Jul 9, 11:08 PM MST	Areal Flood Advisory	TWC	82 min
Jul 10, 4:44 PM MST	Blowing Dust Advisory	TWC	19 min
Jul 10, 5:03 PM MST	Dust Storm Warning	TWC	117 min
Jul 10, 5:14 PM MST	Severe Thunderstorm Warning	TWC	46 min
Jul 13, 4:20 PM MST	Areal Flood Advisory	TWC	115 min
Jul 14, 1:24 PM MST	Flash Flood Warning	TWC	3 hr
Jul 14, 2:45 PM MST	Flash Flood Watch	TWC	53 hr
Jul 15, 3:35 PM MST	Severe Thunderstorm Warning	TWC	40 min
Jul 15, 4:32 PM MST	Severe Thunderstorm Warning	TWC	43 min
Jul 15, 5:33 PM MST	Areal Flood Advisory	TWC	117 min
Jul 15, 5:48 PM MST	Flash Flood Warning	TWC	117 min
Jul 15, 6:05 PM MST	Severe Thunderstorm Warning	TWC	40 min
Jul 15, 6:47 PM MST	Areal Flood Advisory	TWC	118 min
Jul 15, 7:08 PM MST	Flash Flood Warning	TWC	112 min
Jul 15, 8:04 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 15, 8:54 PM MST	Areal Flood Advisory	TWC	6 hr
Jul 16, 2:43 PM MST	Areal Flood Advisory	TWC	4 hr
Jul 16, 4:32 PM MST	Special Weather Statement	TWC	28 min
Jul 16, 5:52 PM MST	Special Weather Statement	TWC	38 min
Jul 16, 6:40 PM MST	Areal Flood Advisory	TWC	110 min
Jul 16, 8:38 PM MST	Areal Flood Advisory	TWC	112 min
Jul 19, 4:48 PM MST	Severe Thunderstorm Warning	TWC	42 min
Jul 19, 4:50 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 19, 5:04 PM MST	Severe Thunderstorm Warning	TWC	41 min
Jul 19, 5:44 PM MST	Severe Thunderstorm Warning	TWC	46 min
Jul 19, 5:57 PM MST	Areal Flood Advisory	TWC	2 hr
Jul 20, 2:15 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 20, 2:18 PM MST	Severe Thunderstorm Warning	TWC	42 min
Jul 20, 2:49 PM MST	Severe Thunderstorm Warning	TWC	56 min
Jul 20, 3:13 PM MST	Blowing Dust Advisory	TWC	59 min
Jul 20, 3:29 PM MST	Flash Flood Warning	TWC	2 hr
Jul 20, 3:32 PM MST	Severe Thunderstorm Warning	TWC	43 min
Jul 20, 4:11 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 20, 4:12 PM MST	Dust Storm Warning	TWC	70 min
Jul 20, 4:32 PM MST	Flash Flood Warning	TWC	3 hr
Jul 20, 7:25 PM MST	Areal Flood Advisory	TWC	9 hr
Jul 21, 1:37 AM MST	Areal Flood Warning	TWC	16 hr
Jul 21, 3:45 AM MST	Areal Flood Warning	TWC	18 hr
Jul 23, 6:28 PM MST	Areal Flood Advisory	TWC	2 hr
Jul 24, 2:54 AM MST	Flash Flood Watch	TWC	18 hr
Jul 25, 9:51 AM MST	Flash Flood Watch	TWC	9 hr
Jul 25, 12:15 PM MST	Flash Flood Warning	TWC	3 hr
Jul 25, 12:29 PM MST	Special Weather Statement	TWC	46 min
Jul 25, 12:38 PM MST	Flash Flood Warning	TWC	3 hr
Jul 25, 1:02 PM MST	Flash Flood Warning	TWC	118 min
Jul 25, 1:22 PM MST	Severe Thunderstorm Warning	TWC	38 min
Jul 25, 1:59 PM MST	Flash Flood Warning	TWC	3 hr
Jul 25, 2:43 PM MST	Flash Flood Warning	TWC	2 hr
Jul 25, 3:01 PM MST	Flash Flood Warning	TWC	119 min
Jul 25, 3:17 PM MST	Mesoscale Discussion	SPC	2 hr
Jul 25, 3:55 PM MST	Flash Flood Warning	TWC	3 hr
Jul 25, 4:02 PM MST	Flash Flood Warning	TWC	118 min
Jul 25, 5:17 PM MST	Severe Thunderstorm Warning	TWC	28 min
Jul 26, 12:48 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 26, 1:12 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 26, 1:44 PM MST	Flash Flood Warning	TWC	2 hr
Jul 26, 1:50 PM MST	Severe Thunderstorm Warning	TWC	40 min
Jul 26, 2:02 PM MST	Flash Flood Warning	TWC	118 min
Jul 26, 2:05 PM MST	Severe Thunderstorm Warning	TWC	40 min
Jul 26, 2:17 PM MST	Flash Flood Warning	TWC	118 min
Jul 26, 2:41 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 26, 2:46 PM MST	Areal Flood Advisory	TWC	3 hr
Jul 26, 3:10 PM MST	Severe Thunderstorm Warning	TWC	50 min
Jul 26, 3:35 PM MST	Flash Flood Warning	TWC	115 min
Jul 27, 11:03 AM MST	Areal Flood Advisory	TWC	3 hr
Jul 27, 11:18 AM MST	Flash Flood Warning	TWC	3 hr
Jul 27, 3:43 PM MST	Severe Thunderstorm Warning	TWC	47 min
Aug 1, 12:31 PM MST	Areal Flood Advisory	TWC	119 min
Aug 1, 1:03 PM MST	Flash Flood Warning	TWC	117 min
Aug 1, 2:13 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 2, 11:25 AM MST	Areal Flood Advisory	TWC	3 hr
Aug 2, 12:09 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 2, 1:38 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 2, 1:42 PM MST	Areal Flood Advisory	TWC	2 hr
Aug 2, 1:52 PM MST	Severe Thunderstorm Warning	TWC	38 min
Aug 2, 2:27 PM MST	Special Weather Statement	TWC	33 min
Aug 2, 3:58 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 3, 3:49 PM MST	Special Weather Statement	TWC	41 min
Aug 5, 7:27 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 6, 12:40 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 11, 4:26 PM MST	Areal Flood Advisory	TWC	79 min
Aug 11, 4:48 PM MST	Flash Flood Warning	TWC	87 min
Aug 11, 6:17 PM MST	Areal Flood Advisory	TWC	88 min
Aug 15, 6:54 PM MST	Areal Flood Advisory	TWC	111 min
Aug 16, 7:22 PM MST	Severe Thunderstorm Warning	TWC	23 min
Aug 17, 4:32 PM MST	Severe Thunderstorm Warning	TWC	43 min
Aug 17, 7:06 PM MST	Blowing Dust Advisory	TWC	27 min
Aug 17, 7:33 PM MST	Dust Storm Warning	TWC	33 min
Aug 17, 8:06 PM MST	Blowing Dust Advisory	TWC	114 min
Aug 18, 5:08 PM MST	Special Weather Statement	TWC	52 min
Aug 18, 5:13 PM MST	Areal Flood Advisory	TWC	2 hr
Aug 18, 5:44 PM MST	Flash Flood Warning	TWC	91 min
Aug 18, 7:52 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 19, 3:59 PM MST	Special Weather Statement	TWC	46 min
Aug 20, 2:07 PM MST	Severe Thunderstorm Warning	TWC	38 min
Aug 20, 2:45 PM MST	Severe Thunderstorm Warning	TWC	30 min
Aug 20, 2:54 PM MST	Flash Flood Warning	TWC	111 min
Aug 20, 2:54 PM MST	Special Weather Statement	TWC	51 min
Aug 20, 2:59 PM MST	Severe Thunderstorm Warning	TWC	31 min
Aug 20, 3:18 PM MST	Flash Flood Warning	TWC	117 min
Aug 20, 3:35 PM MST	Areal Flood Advisory	TWC	115 min
Aug 20, 4:01 PM MST	Blowing Dust Advisory	TWC	119 min
Aug 20, 4:47 PM MST	Special Weather Statement	TWC	43 min
Aug 20, 5:04 PM MST	Areal Flood Advisory	TWC	116 min
Aug 22, 3:21 PM MST	Severe Thunderstorm Warning	TWC	24 min
Aug 22, 3:50 PM MST	Areal Flood Advisory	TWC	115 min
Aug 22, 3:50 PM MST	Severe Thunderstorm Warning	TWC	25 min
Aug 22, 4:06 PM MST	Flash Flood Warning	TWC	54 min
Aug 22, 4:18 PM MST	Flash Flood Warning	TWC	57 min
Aug 22, 4:34 PM MST	Severe Thunderstorm Warning	TWC	26 min
Aug 22, 4:45 PM MST	Severe Thunderstorm Warning	TWC	30 min
Aug 22, 4:58 PM MST	Flash Flood Warning	TWC	92 min
Aug 22, 5:12 PM MST	Severe Thunderstorm Warning	TWC	33 min
Aug 22, 5:29 PM MST	Blowing Dust Advisory	TWC	3 hr
Aug 22, 5:36 PM MST	Flash Flood Warning	TWC	54 min
Aug 23, 4:14 PM MST	Areal Flood Advisory	TWC	2 hr
Aug 24, 2:33 AM MST	Flash Flood Watch	TWC	38 hr
Aug 24, 1:08 PM MST	Areal Flood Advisory	TWC	82 min
Aug 24, 2:31 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 24, 5:51 PM MST	Areal Flood Advisory	TWC	6 hr
Aug 24, 10:05 PM MST	Areal Flood Advisory	TWC	3 hr
Aug 25, 2:50 PM MST	Areal Flood Advisory	TWC	115 min
Aug 25, 3:27 PM MST	Areal Flood Advisory	TWC	2 hr
Aug 25, 4:39 PM MST	Special Weather Statement	TWC	51 min
Aug 26, 2:28 PM MST	Severe Thunderstorm Warning	TWC	47 min
Aug 26, 2:30 PM MST	Severe Thunderstorm Warning	TWC	30 min
Aug 26, 3:04 PM MST	Mesoscale Discussion	SPC	116 min
Aug 26, 3:08 PM MST	Severe Thunderstorm Warning	TWC	22 min
Aug 26, 3:27 PM MST	Special Weather Statement	TWC	33 min
Aug 26, 4:02 PM MST	Special Weather Statement	TWC	28 min
Aug 26, 4:39 PM MST	Blowing Dust Advisory	TWC	81 min
Aug 26, 7:51 PM MST	Areal Flood Advisory	TWC	84 min
Aug 27, 2:50 PM MST	Mesoscale Discussion	SPC	2 hr
Aug 27, 4:29 PM MST	Special Weather Statement	TWC	31 min
Aug 28, 2:41 PM MST	Mesoscale Discussion	SPC	3 hr
Aug 28, 3:24 PM MST	Special Weather Statement	TWC	36 min
Aug 28, 4:11 PM MST	Areal Flood Advisory	TWC	94 min
Aug 28, 5:33 PM MST	Severe Thunderstorm Warning	TWC	42 min
Aug 28, 6:05 PM MST	Areal Flood Advisory	TWC	115 min
Aug 28, 7:43 PM MST	Flash Flood Warning	TWC	107 min
Aug 28, 9:32 PM MST	Areal Flood Warning	TWC	8 hr
Aug 30, 5:29 PM MST	Areal Flood Advisory	TWC	2 hr
Aug 31, 4:42 PM MST	Areal Flood Advisory	TWC	3 hr
Sep 1, 6:22 PM MST	Special Weather Statement	TWC	38 min
Sep 1, 7:05 PM MST	Areal Flood Advisory	TWC	85 min
Sep 1, 7:29 PM MST	Flash Flood Warning	TWC	2 hr
Sep 2, 5:21 AM MST	Areal Flood Advisory	TWC	3 hr
Sep 3, 12:57 PM MST	Severe Thunderstorm Warning	TWC	48 min
Sep 3, 1:00 PM MST	Severe Thunderstorm Warning	TWC	45 min
Sep 3, 1:14 PM MST	Mesoscale Discussion	SPC	2 hr
Sep 3, 1:23 PM MST	Areal Flood Advisory	TWC	2 hr
Sep 3, 1:51 PM MST	Severe Thunderstorm Warning	TWC	39 min
Sep 6, 1:36 PM MST	Special Weather Statement	TWC	24 min
Sep 6, 2:27 PM MST	Areal Flood Advisory	TWC	93 min
Sep 6, 3:08 PM MST	Special Weather Statement	TWC	52 min
Sep 6, 3:10 PM MST	Severe Thunderstorm Warning	TWC	65 min
Sep 6, 3:25 PM MST	Severe Thunderstorm Warning	TWC	50 min
Sep 6, 3:38 PM MST	Areal Flood Advisory	TWC	3 hr
Sep 6, 3:48 PM MST	Special Weather Statement	TWC	42 min
Sep 6, 4:07 PM MST	Severe Thunderstorm Warning	TWC	38 min
Sep 6, 4:19 PM MST	Severe Thunderstorm Warning	TWC	26 min
Sep 6, 4:33 PM MST	Flash Flood Warning	TWC	117 min
Sep 6, 4:56 PM MST	Severe Thunderstorm Warning	TWC	34 min
Sep 6, 5:38 PM MST	Areal Flood Advisory	TWC	82 min
Sep 7, 3:07 AM MST	Areal Flood Warning	TWC	6 hr
Sep 8, 12:45 PM MST	Areal Flood Advisory	TWC	2 hr
Sep 8, 6:50 PM MST	Areal Flood Advisory	TWC	115 min
Sep 9, 12:16 PM MST	Areal Flood Advisory	TWC	3 hr
Sep 9, 1:37 PM MST	Areal Flood Advisory	TWC	4 hr
Sep 9, 4:46 PM MST	Areal Flood Advisory	TWC	89 min
Sep 9, 6:05 PM MST	Areal Flood Advisory	TWC	3 hr
Sep 9, 8:36 PM MST	Areal Flood Advisory	TWC	3 hr
Sep 9, 9:24 PM MST	Flash Flood Warning	TWC	81 min
Sep 10, 12:08 AM MST	Areal Flood Advisory	TWC	112 min
Oct 8, 1:35 PM MST	Blowing Dust Advisory	TWC	30 hr
Oct 8, 1:35 PM MST	Wind Advisory	TWC	34 hr
Nov 14, 12:33 PM MST	Wind Advisory	TWC	29 hr
Nov 20, 3:05 PM MST	Winter Storm Watch	TWC	35 hr
Nov 21, 2:56 PM MST	Flood Watch	TWC	36 hr
Nov 22, 2:30 AM MST	Winter Storm Warning	TWC	49 hr
Nov 22, 2:25 PM MST	Winter Weather Advisory	TWC	37 hr
Nov 24, 9:34 AM MST	Frost Advisory	TWC	22 hr
Nov 25, 3:43 AM MST	Dense Fog Advisory	TWC	4 hr
Nov 25, 4:26 AM MST	Freezing Fog Advisory	TWC	4 hr
Dec 3, 2:14 PM MST	Wind Advisory	TWC	27 hr
Dec 4, 2:05 PM MST	Freeze Warning	TWC	43 hr
Dec 8, 2:31 PM MST	Freeze Watch	TWC	24 hr
Dec 9, 2:01 PM MST	Freeze Warning	TWC	18 hr
Dec 19, 3:50 AM MST	Winter Weather Advisory	TWC	44 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	53
Severe Thunderstorm Watch	1
Mesoscale Discussion	8
Special Weather Statement	19
Flooding
Areal Flood Warning	4
Flash Flood Warning	32
Flash Flood Watch	4
Flood Watch	1
Areal Flood Advisory	68
Winter
Blizzard Warning	1
Winter Storm Warning	2
Winter Storm Watch	3
Winter Weather Advisory	7
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Cold
Freeze Warning	2
Hard Freeze Warning	3
Freeze Watch	1
Hard Freeze Watch	1
Frost Advisory	2
Wind and dust
Dust Storm Warning	5
High Wind Warning	1
Blowing Dust Advisory	10
Wind Advisory	10
Fog and smoke
Dense Fog Advisory	2
Freezing Fog Advisory	1

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2012 2014

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.