Alert archive / Arizona / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in Arizona, 1999

272 severe thunderstorm warnings in 1999. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.

Severe Thunderstorm Warnings by county

Each county as a circle sized by its count in 1999. Tap one for its archive.

Severe Thunderstorm Warnings: 272
Busiest month: September102 severe thunderstorm warnings
Busiest day: September 15, 199922 severe thunderstorm warnings

Over time

By month

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	Counties	Lasted
Jun 13, 3:10 PM MST	Severe Thunderstorm Warning	TWC	Graham	50 min
Jun 15, 5:29 PM MST	Severe Thunderstorm Warning	TWC	Cochise	31 min
Jun 17, 2:46 PM MST	Severe Thunderstorm Warning	TWC	Cochise	34 min
Jun 17, 3:33 PM MST	Severe Thunderstorm Warning	TWC	Pima	42 min
Jun 17, 4:00 PM MST	Severe Thunderstorm Warning	PSR	Gila	50 min
Jun 17, 4:54 PM MST	Severe Thunderstorm Warning	PSR	Gila	61 min
Jun 18, 1:43 PM MST	Severe Thunderstorm Warning	TWC	Pima	47 min
Jun 27, 5:35 PM MST	Severe Thunderstorm Warning	TWC	Pima	45 min
Jun 28, 1:51 PM MST	Severe Thunderstorm Warning	TWC	Cochise	44 min
Jul 2, 4:47 PM MST	Severe Thunderstorm Warning	TWC	Pima	33 min
Jul 2, 5:22 PM MST	Severe Thunderstorm Warning	TWC	Pima	53 min
Jul 2, 5:37 PM MST	Severe Thunderstorm Warning	TWC	Pima	48 min
Jul 3, 10:38 AM MST	Severe Thunderstorm Warning	TWC	Cochise	32 min
Jul 3, 11:42 AM MST	Severe Thunderstorm Warning	TWC	Cochise	33 min
Jul 3, 12:06 PM MST	Severe Thunderstorm Warning	TWC	Cochise	49 min
Jul 3, 1:04 PM MST	Severe Thunderstorm Warning	TWC	Cochise	51 min
Jul 5, 12:38 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	32 min
Jul 5, 1:03 PM MST	Severe Thunderstorm Warning	TWC	Pinal	42 min
Jul 5, 2:43 PM MST	Severe Thunderstorm Warning	TWC	Greenlee	47 min
Jul 5, 2:50 PM MST	Severe Thunderstorm Warning	TWC	Pima	65 min
Jul 5, 3:39 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	61 min
Jul 6, 12:18 PM MST	Severe Thunderstorm Warning	TWC	Cochise	47 min
Jul 6, 12:38 PM MST	Severe Thunderstorm Warning	TWC	Cochise	47 min
Jul 6, 1:10 PM MST	Severe Thunderstorm Warning	TWC	Cochise	60 min
Jul 6, 1:17 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	48 min
Jul 6, 1:35 PM MST	Severe Thunderstorm Warning	TWC	Pima	60 min
Jul 6, 1:59 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	66 min
Jul 6, 2:00 PM MST	Severe Thunderstorm Warning	PSR	Gila	60 min
Jul 6, 3:10 PM MST	Severe Thunderstorm Warning	PSR	Pinal	65 min
Jul 6, 3:16 PM MST	Severe Thunderstorm Warning	PSR	Pinal	64 min
Jul 6, 4:09 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	91 min
Jul 6, 6:08 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	47 min
Jul 7, 1:57 PM MST	Severe Thunderstorm Warning	TWC	Cochise	33 min
Jul 7, 2:58 PM MST	Severe Thunderstorm Warning	TWC	Pinal	32 min
Jul 7, 3:43 PM MST	Severe Thunderstorm Warning	TWC	Pima	47 min
Jul 7, 4:33 PM MST	Severe Thunderstorm Warning	TWC	Pima	47 min
Jul 7, 5:59 PM MST	Severe Thunderstorm Warning	PSR	Pinal	51 min
Jul 7, 7:43 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	62 min
Jul 7, 7:50 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	35 min
Jul 7, 8:28 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	32 min
Jul 8, 4:00 PM MST	Severe Thunderstorm Warning	PSR	Gila	45 min
Jul 8, 9:37 PM MST	Severe Thunderstorm Warning	TWC	Pima	43 min
Jul 9, 11:09 AM MST	Severe Thunderstorm Warning	TWC	Pima	31 min
Jul 9, 11:50 AM MST	Severe Thunderstorm Warning	TWC	Pima	30 min
Jul 9, 12:46 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	49 min
Jul 9, 3:59 PM MST	Severe Thunderstorm Warning	PSR	La Paz	46 min
Jul 10, 1:33 PM MST	Severe Thunderstorm Warning	TWC	Pima	47 min
Jul 10, 2:13 PM MST	Severe Thunderstorm Warning	TWC	Pima	47 min
Jul 12, 1:28 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	47 min
Jul 12, 2:29 PM MST	Severe Thunderstorm Warning	TWC	Pima	46 min
Jul 13, 2:10 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	40 min
Jul 13, 2:37 PM MST	Severe Thunderstorm Warning	TWC	Pinal	33 min
Jul 13, 3:38 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	47 min
Jul 13, 3:42 PM MST	Severe Thunderstorm Warning	TWC	Pima	33 min
Jul 13, 8:11 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	49 min
Jul 13, 9:05 PM MST	Severe Thunderstorm Warning	TWC	Pima	45 min
Jul 14, 12:32 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	48 min
Jul 14, 1:23 PM MST	Severe Thunderstorm Warning	PSR	Gila	62 min
Jul 14, 1:42 PM MST	Severe Thunderstorm Warning	FGZ	Gila	43 min
Jul 14, 3:25 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	60 min
Jul 14, 3:47 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	48 min
Jul 14, 4:24 PM MST	Severe Thunderstorm Warning	PSR	Pinal	46 min
Jul 14, 4:38 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	37 min
Jul 14, 5:14 PM MST	Severe Thunderstorm Warning	PSR	Pinal	61 min
Jul 14, 11:53 PM MST	Severe Thunderstorm Warning	VEF	Mohave	52 min
Jul 15, 12:21 AM MST	Severe Thunderstorm Warning	VEF	Mohave	84 min
Jul 15, 3:31 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	29 min
Jul 18, 1:38 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	42 min
Jul 18, 4:26 PM MST	Severe Thunderstorm Warning	PSR	Yuma	64 min
Jul 21, 3:00 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	30 min
Jul 22, 4:09 PM MST	Severe Thunderstorm Warning	PSR	Gila	46 min
Jul 22, 4:38 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	47 min
Jul 22, 4:58 PM MST	Severe Thunderstorm Warning	TWC	Cochise	47 min
Jul 22, 5:54 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	46 min
Jul 22, 6:38 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	47 min
Jul 23, 3:53 PM MST	Severe Thunderstorm Warning	FGZ	Gila	47 min
Jul 23, 5:12 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	63 min
Jul 23, 5:26 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	39 min
Jul 23, 5:35 PM MST	Severe Thunderstorm Warning	PSR	Pinal	60 min
Jul 23, 6:12 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	63 min
Jul 23, 7:13 PM MST	Severe Thunderstorm Warning	PSR	Pinal	62 min
Jul 24, 3:45 PM MST	Severe Thunderstorm Warning	TWC	Pima	45 min
Jul 25, 1:27 PM MST	Severe Thunderstorm Warning	TWC	Pima	33 min
Jul 25, 3:21 PM MST	Severe Thunderstorm Warning	PSR	Pinal	49 min
Jul 25, 5:14 PM MST	Severe Thunderstorm Warning	TWC	Pinal	31 min
Jul 25, 5:14 PM MST	Severe Thunderstorm Warning	TWC	Cochise	31 min
Jul 25, 5:30 PM MST	Severe Thunderstorm Warning	FGZ	Apache	45 min
Jul 25, 6:08 PM MST	Severe Thunderstorm Warning	FGZ	Gila	47 min
Jul 26, 1:26 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	49 min
Jul 26, 2:32 PM MST	Severe Thunderstorm Warning	PSR	Pinal	48 min
Jul 26, 5:59 PM MST	Severe Thunderstorm Warning	TWC	Graham	46 min
Jul 26, 6:06 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	44 min
Jul 27, 11:45 AM MST	Severe Thunderstorm Warning	FGZ	Yavapai	45 min
Jul 27, 4:14 PM MST	Severe Thunderstorm Warning	TWC	Pima	56 min
Jul 27, 5:29 PM MST	Severe Thunderstorm Warning	TWC	Cochise	61 min
Jul 27, 5:40 PM MST	Severe Thunderstorm Warning	PSR	Gila	60 min
Jul 27, 7:12 PM MST	Severe Thunderstorm Warning	TWC	Gila, Pinal	48 min
Jul 28, 7:06 PM MST	Severe Thunderstorm Warning	PSR	Yuma	64 min
Jul 29, 12:25 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	45 min
Aug 5, 4:10 PM MST	Severe Thunderstorm Warning	TWC	Pima	50 min
Aug 6, 5:27 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	33 min
Aug 10, 5:08 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	47 min
Aug 10, 5:56 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	44 min
Aug 10, 9:28 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	62 min
Aug 15, 1:00 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	30 min
Aug 15, 2:28 PM MST	Severe Thunderstorm Warning	FGZ	Apache	32 min
Aug 15, 3:17 PM MST	Severe Thunderstorm Warning	TWC	Pima	43 min
Aug 15, 4:25 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	35 min
Aug 15, 4:57 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	33 min
Aug 15, 5:05 PM MST	Severe Thunderstorm Warning	PSR	Pinal	55 min
Aug 16, 12:44 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	31 min
Aug 16, 2:31 PM MST	Severe Thunderstorm Warning	TWC	Pima	34 min
Aug 16, 2:36 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	29 min
Aug 16, 4:46 PM MST	Severe Thunderstorm Warning	TWC	Pima	29 min
Aug 16, 5:29 PM MST	Severe Thunderstorm Warning	TWC	Cochise	31 min
Aug 16, 6:26 PM MST	Severe Thunderstorm Warning	TWC	Pinal	34 min
Aug 17, 3:26 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	59 min
Aug 17, 3:45 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	60 min
Aug 17, 4:57 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	63 min
Aug 17, 6:03 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	62 min
Aug 18, 2:00 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	45 min
Aug 18, 2:31 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	29 min
Aug 18, 2:31 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	29 min
Aug 18, 4:38 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	57 min
Aug 19, 12:05 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	30 min
Aug 19, 1:35 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	40 min
Aug 19, 2:14 PM MST	Severe Thunderstorm Warning	TWC	Pima	31 min
Aug 19, 2:28 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	62 min
Aug 19, 2:35 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	30 min
Aug 19, 4:13 PM MST	Severe Thunderstorm Warning	TWC	Pinal	62 min
Aug 19, 4:40 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Santa Cruz	50 min
Aug 19, 5:29 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	46 min
Aug 20, 2:24 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	31 min
Aug 20, 3:51 PM MST	Severe Thunderstorm Warning	TWC	Pima	34 min
Aug 20, 4:48 PM MST	Severe Thunderstorm Warning	TWC	Pima	47 min
Aug 20, 6:17 PM MST	Severe Thunderstorm Warning	TWC	Pima	33 min
Aug 20, 6:57 PM MST	Severe Thunderstorm Warning	TWC	Pinal	48 min
Aug 22, 10:02 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	28 min
Aug 23, 4:45 PM MST	Severe Thunderstorm Warning	TWC	Cochise	35 min
Aug 23, 7:08 PM MST	Severe Thunderstorm Warning	TWC	Pima	32 min
Aug 23, 7:37 PM MST	Severe Thunderstorm Warning	TWC	Pima	33 min
Aug 26, 4:40 PM MST	Severe Thunderstorm Warning	PSR	La Paz, Yuma	60 min
Aug 26, 5:14 PM MST	Severe Thunderstorm Warning	TWC	Pima	31 min
Aug 26, 7:21 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	49 min
Aug 26, 8:08 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	32 min
Aug 27, 1:11 PM MST	Severe Thunderstorm Warning	TWC	Pima	44 min
Aug 27, 1:55 PM MST	Severe Thunderstorm Warning	TWC	Pima	65 min
Aug 27, 3:00 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	45 min
Aug 27, 3:09 PM MST	Severe Thunderstorm Warning	PSR	Pinal	51 min
Aug 27, 3:50 PM MST	Severe Thunderstorm Warning	TWC	Pinal	45 min
Aug 27, 4:20 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	45 min
Aug 27, 4:46 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	94 min
Aug 28, 5:31 PM MST	Severe Thunderstorm Warning	TWC	Pinal	49 min
Aug 28, 5:42 PM MST	Severe Thunderstorm Warning	TWC	Cochise	43 min
Aug 28, 6:56 PM MST	Severe Thunderstorm Warning	TWC	Pinal	34 min
Aug 29, 2:45 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	45 min
Aug 29, 5:20 PM MST	Severe Thunderstorm Warning	TWC	Pinal	40 min
Aug 29, 5:33 PM MST	Severe Thunderstorm Warning	VEF	Mohave	42 min
Aug 30, 5:50 PM MST	Severe Thunderstorm Warning	TWC	Pinal	50 min
Aug 30, 5:51 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	59 min
Aug 30, 6:40 PM MST	Severe Thunderstorm Warning	TWC	Pinal	50 min
Aug 31, 12:52 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	53 min
Aug 31, 1:09 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	51 min
Aug 31, 1:37 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	58 min
Aug 31, 1:53 PM MST	Severe Thunderstorm Warning	PSR	Pinal	32 min
Aug 31, 2:17 PM MST	Severe Thunderstorm Warning	TWC	Cochise	48 min
Aug 31, 2:23 PM MST	Severe Thunderstorm Warning	TWC	Pima	47 min
Aug 31, 2:28 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	47 min
Aug 31, 3:22 PM MST	Severe Thunderstorm Warning	FGZ	Apache	48 min
Aug 31, 4:49 PM MST	Severe Thunderstorm Warning	TWC	Cochise	51 min
Aug 31, 5:33 PM MST	Severe Thunderstorm Warning	TWC	Pinal	47 min
Aug 31, 5:48 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	42 min
Aug 31, 6:30 PM MST	Severe Thunderstorm Warning	TWC	Pima	50 min
Aug 31, 7:13 PM MST	Severe Thunderstorm Warning	TWC	Pima	47 min
Sep 1, 9:15 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	30 min
Sep 2, 4:50 PM MST	Severe Thunderstorm Warning	TWC	Cochise	35 min
Sep 10, 8:35 PM MST	Severe Thunderstorm Warning	VEF	Mohave	25 min
Sep 11, 6:50 AM MST	Severe Thunderstorm Warning	FGZ	Coconino	30 min
Sep 11, 10:24 AM MST	Severe Thunderstorm Warning	FGZ	Coconino, Gila	46 min
Sep 11, 11:38 AM MST	Severe Thunderstorm Warning	FGZ	Maricopa	47 min
Sep 11, 11:58 AM MST	Severe Thunderstorm Warning	VEF	Mohave	62 min
Sep 11, 12:33 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Yavapai	62 min
Sep 11, 1:20 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	50 min
Sep 11, 1:45 PM MST	Severe Thunderstorm Warning	FGZ	Gila	45 min
Sep 11, 2:35 PM MST	Severe Thunderstorm Warning	VEF	Mohave	55 min
Sep 11, 3:10 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	65 min
Sep 11, 3:13 PM MST	Severe Thunderstorm Warning	VEF	Mohave	62 min
Sep 11, 4:47 PM MST	Severe Thunderstorm Warning	VEF	Mohave	58 min
Sep 11, 5:12 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	63 min
Sep 11, 5:53 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	62 min
Sep 11, 6:55 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	60 min
Sep 11, 7:18 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	47 min
Sep 11, 9:03 PM MST	Severe Thunderstorm Warning	VEF	Mohave	57 min
Sep 11, 9:17 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	63 min
Sep 13, 1:04 PM MST	Severe Thunderstorm Warning	TWC	Pima	46 min
Sep 13, 2:32 PM MST	Severe Thunderstorm Warning	TWC	Cochise	43 min
Sep 14, 5:44 AM MST	Severe Thunderstorm Warning	FGZ	Yavapai	46 min
Sep 14, 6:24 AM MST	Severe Thunderstorm Warning	FGZ	Yavapai	36 min
Sep 14, 9:05 AM MST	Severe Thunderstorm Warning	FGZ	Coconino	45 min
Sep 14, 10:37 AM MST	Severe Thunderstorm Warning	FGZ	Yavapai	33 min
Sep 14, 11:13 AM MST	Severe Thunderstorm Warning	FGZ	Yavapai	32 min
Sep 14, 12:19 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	46 min
Sep 14, 12:41 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	34 min
Sep 14, 1:00 PM MST	Severe Thunderstorm Warning	FGZ	Gila	50 min
Sep 14, 1:10 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	35 min
Sep 14, 1:32 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Gila	48 min
Sep 14, 1:45 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	50 min
Sep 14, 1:48 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	62 min
Sep 14, 2:57 PM MST	Severe Thunderstorm Warning	PSR	Pinal	63 min
Sep 14, 3:21 PM MST	Severe Thunderstorm Warning	PSR	Gila	49 min
Sep 14, 3:24 PM MST	Severe Thunderstorm Warning	TWC	Pima	46 min
Sep 14, 3:35 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	45 min
Sep 14, 3:58 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	47 min
Sep 14, 4:34 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	41 min
Sep 14, 4:39 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	36 min
Sep 14, 4:43 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	47 min
Sep 14, 5:12 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	48 min
Sep 14, 5:13 PM MST	Severe Thunderstorm Warning	FGZ	Gila, Yavapai	47 min
Sep 14, 5:45 PM MST	Severe Thunderstorm Warning	PSR	Gila, Maricopa	60 min
Sep 14, 5:59 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	61 min
Sep 14, 6:29 PM MST	Severe Thunderstorm Warning	PSR	Pinal	46 min
Sep 14, 6:49 PM MST	Severe Thunderstorm Warning	VEF	Mohave	56 min
Sep 14, 7:01 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	59 min
Sep 14, 7:21 PM MST	Severe Thunderstorm Warning	PSR	Pinal	39 min
Sep 14, 8:01 PM MST	Severe Thunderstorm Warning	PSR	Pinal	29 min
Sep 15, 12:45 PM MST	Severe Thunderstorm Warning	TWC	Graham, Greenlee	55 min
Sep 15, 1:28 PM MST	Severe Thunderstorm Warning	TWC	Pima	77 min
Sep 15, 1:41 PM MST	Severe Thunderstorm Warning	TWC	Cochise	49 min
Sep 15, 1:54 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	31 min
Sep 15, 1:56 PM MST	Severe Thunderstorm Warning	PSR	Pinal	34 min
Sep 15, 3:04 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	31 min
Sep 15, 3:16 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	34 min
Sep 15, 3:17 PM MST	Severe Thunderstorm Warning	TWC	Pima	38 min
Sep 15, 3:42 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	33 min
Sep 15, 3:55 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	35 min
Sep 15, 4:25 PM MST	Severe Thunderstorm Warning	TWC	Graham	35 min
Sep 15, 4:41 PM MST	Severe Thunderstorm Warning	PSR	Pinal	49 min
Sep 15, 4:50 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	50 min
Sep 15, 5:03 PM MST	Severe Thunderstorm Warning	TWC	Pinal	42 min
Sep 15, 5:29 PM MST	Severe Thunderstorm Warning	PSR	Pinal	46 min
Sep 15, 5:42 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	33 min
Sep 15, 6:00 PM MST	Severe Thunderstorm Warning	PSR	Gila	45 min
Sep 15, 6:49 PM MST	Severe Thunderstorm Warning	PSR	Gila	41 min
Sep 16, 5:55 AM MST	Severe Thunderstorm Warning	VEF	Mohave	50 min
Sep 16, 11:15 AM MST	Severe Thunderstorm Warning	FGZ	Coconino	30 min
Sep 16, 11:33 AM MST	Severe Thunderstorm Warning	FGZ	Coconino	47 min
Sep 16, 12:19 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	41 min
Sep 16, 12:35 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	45 min
Sep 16, 12:42 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	48 min
Sep 16, 2:30 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	50 min
Sep 16, 2:54 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	46 min
Sep 16, 4:04 PM MST	Severe Thunderstorm Warning	PSR	La Paz	61 min
Sep 16, 4:16 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	49 min
Sep 16, 5:08 PM MST	Severe Thunderstorm Warning	PSR	Yuma	37 min
Sep 16, 5:15 PM MST	Severe Thunderstorm Warning	PSR	La Paz	50 min
Sep 16, 6:27 PM MST	Severe Thunderstorm Warning	PSR	La Paz	33 min
Sep 16, 7:05 PM MST	Severe Thunderstorm Warning	PSR	La Paz	40 min
Sep 16, 7:47 PM MST	Severe Thunderstorm Warning	PSR	La Paz	43 min
Sep 18, 1:48 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	47 min
Sep 18, 4:19 PM MST	Severe Thunderstorm Warning	VEF	Mohave	56 min
Sep 19, 12:29 PM MST	Severe Thunderstorm Warning	PSR	Pinal	46 min
Sep 19, 12:39 PM MST	Severe Thunderstorm Warning	TWC	Pima	31 min
Sep 19, 1:13 PM MST	Severe Thunderstorm Warning	PSR	Pinal	47 min
Sep 19, 1:17 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	43 min
Sep 19, 1:31 PM MST	Severe Thunderstorm Warning	TWC	Pinal	34 min
Sep 19, 2:54 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	36 min
Sep 19, 3:23 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	52 min
Sep 19, 4:48 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	42 min
Sep 20, 4:36 PM MST	Severe Thunderstorm Warning	PSR	La Paz	64 min
Sep 23, 1:11 PM MST	Severe Thunderstorm Warning	PSR	Pinal	49 min
Sep 23, 1:31 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	44 min
Sep 23, 5:06 PM MST	Severe Thunderstorm Warning	TWC	Pima	49 min

By county

Every county with at least one alert. A county page lists each alert that covered it.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 1998 2000

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.