Alert archive / Arizona / Flash Flood Warnings

Flash Flood Warnings in Arizona, 2025

276 flash flood warnings in 2025. 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 flash flood warnings reaches back to 1986.

Flash Flood Warnings by county

Each county as a circle sized by its count in 2025. Tap one for its archive.

Flash Flood Warnings: 276
Busiest month: September109 flash flood warnings
Busiest day: October 12, 202524 flash flood warnings

Over time

By month

Warning verification

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

110 of 276 flash flood warnings covering Arizona in 2025 had a flash flood report inside them; 196 of 264 flash flood reports fell inside a warning, on average 72 minutes after it went out.

Arizona, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Flash flood warnings	276	110	60%	264	74%	72 min

Each office's whole area, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Las Vegas, NV: flash flood warnings	123	43	65%	134	67%	67 min
NWS Flagstaff, AZ: flash flood warnings	69	22	68%	55	55%	104 min
NWS Phoenix, AZ: flash flood warnings	110	65	41%	141	89%	73 min
NWS Tucson, AZ: flash flood warnings	70	17	76%	49	57%	53 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	Counties	Lasted
May 4, 1:47 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
May 4, 3:07 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
May 4, 3:34 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	4 hr
May 5, 1:40 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
May 6, 2:42 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
May 6, 4:12 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Jun 2, 4:57 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Jun 3, 2:18 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	117 min
Jun 3, 4:50 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	22 hr
Jun 3, 5:08 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Jun 3, 5:45 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Jun 3, 6:28 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Yavapai	3 hr
Jun 3, 7:36 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Jun 3, 8:06 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Jun 3, 10:23 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Jun 4, 12:16 AM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	4 hr
Jun 4, 1:01 AM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	4 hr
Jun 5, 1:05 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Jun 26, 1:49 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	116 min
Jul 2, 1:22 PM MST	Flash Flood Warning Considerable damage threat	TWC	Santa Cruz	3 hr
Jul 2, 1:24 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	5 hr
Jul 2, 3:24 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila	3 hr
Jul 2, 4:49 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	9 hr
Jul 2, 5:20 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	3 hr
Jul 2, 5:44 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	3 hr
Jul 2, 7:03 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Jul 2, 7:07 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Jul 2, 7:10 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 2, 8:35 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Jul 2, 9:05 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	16 min
Jul 3, 2:08 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	112 min
Jul 3, 2:34 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	116 min
Jul 3, 2:45 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	2 hr
Jul 3, 3:28 PM MST	Flash Flood Warning Considerable damage threat	TWC	Graham, Pinal	2 hr
Jul 4, 12:20 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	2 hr
Jul 4, 2:33 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	117 min
Jul 5, 2:38 PM MST	Flash Flood Warning Considerable damage threat	TWC	Santa Cruz	3 hr
Jul 5, 3:08 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	112 min
Jul 5, 3:59 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	3 hr
Jul 5, 4:55 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	3 hr
Jul 6, 4:16 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	119 min
Jul 13, 3:55 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	3 hr
Jul 15, 4:10 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Navajo	3 hr
Jul 15, 4:25 PM MST	Flash Flood Warning Considerable damage threat	TWC	Santa Cruz	2 hr
Jul 15, 5:56 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Jul 15, 6:48 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 15, 7:09 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	2 hr
Jul 15, 7:18 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	3 hr
Jul 15, 7:49 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	116 min
Jul 15, 8:04 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima, Pinal	3 hr
Jul 15, 8:54 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 15, 9:47 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	2 hr
Jul 16, 12:41 AM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila	4 hr
Jul 16, 1:38 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Jul 16, 2:04 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Jul 16, 5:58 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila, Navajo	3 hr
Jul 16, 6:41 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Yavapai	3 hr
Jul 16, 6:45 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Gila	3 hr
Jul 17, 2:03 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Apache	3 hr
Jul 17, 4:43 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Jul 18, 7:08 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise, Graham	112 min
Jul 22, 3:44 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 22, 4:51 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	114 min
Jul 30, 6:07 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 31, 3:39 PM MST	Flash Flood Warning Considerable damage threat	TWC	Santa Cruz	2 hr
Jul 31, 4:42 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 31, 5:18 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 31, 5:59 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	2 hr
Jul 31, 6:10 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima, Pinal	3 hr
Jul 31, 6:52 PM MST	Flash Flood Warning Considerable damage threat	TWC	Graham	3 hr
Aug 13, 7:33 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pinal	3 hr
Aug 14, 5:17 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Gila	3 hr
Aug 14, 6:52 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila, Yavapai	3 hr
Aug 14, 10:14 PM MST	Flash Flood Warning	PSR	Maricopa	3 hr
Aug 14, 10:21 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Aug 14, 10:30 PM MST	Flash Flood Warning	FGZ	Yavapai	2 hr
Aug 15, 5:27 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Aug 15, 6:37 PM MST	Flash Flood Warning Considerable damage threat	TWC	Santa Cruz	53 min
Aug 15, 7:28 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	3 hr
Aug 15, 8:32 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	3 hr
Aug 15, 9:22 PM MST	Flash Flood Warning	FGZ	Yavapai	3 hr
Aug 15, 10:39 PM MST	Flash Flood Warning	FGZ	Yavapai	3 hr
Aug 16, 4:49 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	56 min
Aug 19, 5:39 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	2 hr
Aug 20, 7:04 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	116 min
Aug 21, 5:15 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila, Yavapai	3 hr
Aug 22, 1:57 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	4 hr
Aug 23, 1:54 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	2 hr
Aug 23, 3:23 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Aug 23, 4:02 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Aug 24, 11:34 AM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Aug 24, 1:05 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Aug 24, 2:52 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Aug 24, 3:27 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Aug 24, 5:25 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Aug 25, 2:09 PM MST	Flash Flood Warning Considerable damage threat	TWC	Santa Cruz	117 min
Aug 25, 2:36 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Aug 25, 3:32 PM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	4 hr
Aug 25, 4:38 PM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	4 hr
Aug 25, 4:40 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima, Pinal	2 hr
Aug 25, 5:30 PM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	4 hr
Aug 25, 6:37 PM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	3 hr
Aug 25, 7:53 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Aug 26, 1:09 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Aug 26, 1:31 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Aug 26, 2:01 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	4 hr
Aug 26, 2:12 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	4 hr
Aug 26, 2:24 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila, Yavapai	4 hr
Aug 26, 2:44 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	9 hr
Aug 26, 4:37 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Aug 26, 8:20 PM MST	Flash Flood Warning	VEF	Mohave	115 min
Aug 29, 2:12 AM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Aug 31, 4:25 PM MST	Flash Flood Warning	TWC	Cochise	3 hr
Sep 1, 5:47 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Sep 2, 3:33 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	2 hr
Sep 3, 1:46 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 3, 2:01 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Navajo	3 hr
Sep 3, 3:48 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila	3 hr
Sep 3, 3:49 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila, Maricopa	2 hr
Sep 3, 4:06 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 3, 4:26 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 3, 5:29 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila	3 hr
Sep 3, 5:36 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 3, 6:33 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Sep 3, 8:54 PM MST	Flash Flood Warning	PSR	Maricopa	111 min
Sep 3, 9:18 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	3 hr
Sep 4, 12:09 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	6 hr
Sep 4, 12:40 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Sep 4, 1:24 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Sep 4, 1:44 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz, Yuma	3 hr
Sep 4, 1:56 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 4, 2:18 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Sep 4, 2:20 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima, Pinal	3 hr
Sep 4, 2:31 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	3 hr
Sep 4, 2:36 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Sep 4, 3:15 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 4, 4:26 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	4 hr
Sep 4, 5:14 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Sep 4, 5:59 PM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	4 hr
Sep 4, 6:14 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 4, 7:45 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz, Yuma	4 hr
Sep 4, 8:40 PM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	4 hr
Sep 5, 2:39 AM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 5, 3:41 AM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 5, 4:36 AM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 5, 5:06 AM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 5, 5:15 AM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 5, 6:23 AM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 6, 1:30 AM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 6, 2:34 AM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 6, 4:06 AM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 6, 3:46 PM MST	Flash Flood Warning Considerable damage threat	TWC	Santa Cruz	3 hr
Sep 6, 5:29 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima, Santa Cruz	3 hr
Sep 6, 7:06 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Sep 7, 3:56 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	111 min
Sep 11, 2:42 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	2 hr
Sep 11, 5:11 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Sep 15, 12:04 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	3 hr
Sep 16, 4:36 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	114 min
Sep 16, 6:00 PM MST	Flash Flood Warning	TWC	Pima	2 hr
Sep 17, 3:01 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Sep 17, 4:41 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	2 hr
Sep 17, 5:40 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	2 hr
Sep 18, 12:18 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz, Yuma	7 hr
Sep 18, 12:36 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	7 hr
Sep 18, 1:20 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	6 hr
Sep 18, 2:29 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	3 hr
Sep 18, 2:58 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz, Yuma	3 hr
Sep 18, 3:20 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila, Maricopa	3 hr
Sep 18, 4:53 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila, Yavapai	6 hr
Sep 18, 5:15 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	3 hr
Sep 18, 5:34 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Sep 19, 1:33 AM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila	3 hr
Sep 19, 4:11 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Sep 19, 1:18 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Sep 19, 2:43 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	2 hr
Sep 21, 2:57 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Sep 21, 4:00 PM MST	Flash Flood Warning Considerable damage threat	TWC	Santa Cruz	2 hr
Sep 25, 1:00 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	3 hr
Sep 25, 2:24 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila, Maricopa, Pinal	4 hr
Sep 25, 2:40 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pinal	3 hr
Sep 25, 2:51 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Sep 26, 10:22 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	6 hr
Sep 26, 11:25 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	6 hr
Sep 26, 11:57 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	6 hr
Sep 26, 12:14 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Sep 26, 12:53 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	5 hr
Sep 26, 1:02 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 26, 1:27 PM MST	Flash Flood Warning Considerable damage threat	TWC	Santa Cruz	2 hr
Sep 26, 1:43 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	2 hr
Sep 26, 2:16 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	119 min
Sep 26, 2:45 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Sep 26, 2:54 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Sep 26, 3:37 PM MST	Flash Flood Warning Considerable damage threat	PSR	Pinal	3 hr
Sep 26, 5:03 PM MST	Flash Flood Warning Considerable damage threat	PSR	Pinal	3 hr
Sep 26, 5:47 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila, Maricopa, Pinal	3 hr
Sep 26, 6:49 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila, Pinal	3 hr
Sep 27, 9:57 AM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	3 hr
Sep 27, 11:08 AM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	3 hr
Sep 27, 11:26 AM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	3 hr
Sep 27, 1:09 PM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	3 hr
Sep 27, 1:12 PM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	2 hr
Sep 27, 2:27 PM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	2 hr
Sep 27, 2:58 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	3 hr
Sep 27, 3:06 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Sep 27, 4:08 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Navajo	3 hr
Sep 27, 4:13 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	2 hr
Sep 27, 4:47 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 27, 5:00 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Sep 27, 5:24 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	4 hr
Sep 27, 5:27 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	2 hr
Sep 27, 5:49 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Sep 27, 6:47 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Sep 27, 7:18 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Sep 28, 4:38 AM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Gila	5 hr
Sep 28, 11:00 AM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 28, 12:40 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 28, 1:41 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Sep 28, 2:04 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	5 hr
Sep 28, 2:25 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	4 hr
Sep 28, 3:27 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Gila	3 hr
Sep 28, 6:26 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	2 hr
Oct 9, 1:08 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Oct 9, 1:44 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Oct 10, 8:52 AM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Navajo	5 hr
Oct 10, 11:24 AM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Yavapai	14 hr
Oct 10, 4:20 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Yavapai	3 hr
Oct 10, 5:23 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Navajo	6 hr
Oct 10, 7:22 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Yavapai	6 hr
Oct 11, 7:06 AM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Oct 11, 10:14 AM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	9 hr
Oct 11, 2:59 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	4 hr
Oct 11, 10:57 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Oct 11, 11:22 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Oct 11, 11:57 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Oct 12, 12:55 AM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	2 hr
Oct 12, 1:57 AM MST	Flash Flood Warning	PSR	Maricopa, Pinal	8 hr
Oct 12, 2:08 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Oct 12, 2:38 AM MST	Flash Flood Warning	PSR	Maricopa, Pinal	4 hr
Oct 12, 2:49 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	4 hr
Oct 12, 2:58 AM MST	Flash Flood Warning	PSR	Maricopa, Pinal	4 hr
Oct 12, 4:29 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Oct 12, 6:16 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	6 hr
Oct 12, 6:55 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Oct 12, 7:39 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	5 hr
Oct 12, 7:46 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	5 hr
Oct 12, 7:48 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	105 min
Oct 12, 7:53 AM MST	Flash Flood Warning	PSR	Maricopa, Pinal	105 min
Oct 12, 7:56 AM MST	Flash Flood Warning Considerable damage threat	PSR	Pinal	5 hr
Oct 12, 8:43 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	4 hr
Oct 12, 9:02 AM MST	Flash Flood Warning Considerable damage threat	PSR	Pinal	3 hr
Oct 12, 9:26 AM MST	Flash Flood Warning Considerable damage threat	PSR	Gila, Maricopa, Pinal	3 hr
Oct 12, 10:28 AM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	3 hr
Oct 12, 10:35 AM MST	Flash Flood Warning EmergencyCatastrophic damage threat	PSR	Pinal	3 hr
Oct 12, 2:37 PM MST	Flash Flood Warning	TWC	Pima	3 hr
Oct 12, 3:24 PM MST	Flash Flood Warning Considerable damage threat	TWC	Santa Cruz	3 hr
Oct 12, 6:29 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Oct 12, 6:36 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Oct 12, 8:49 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	3 hr
Oct 13, 11:58 AM MST	Flash Flood Warning Considerable damage threat	TWC	Pinal	3 hr
Oct 13, 12:25 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Oct 13, 1:10 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	3 hr
Oct 13, 1:27 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Oct 13, 1:45 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	5 hr
Oct 13, 3:04 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	4 hr
Oct 13, 5:33 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Oct 13, 6:16 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Navajo	6 hr
Oct 13, 7:22 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	4 hr
Nov 18, 4:58 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Nov 18, 11:50 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Nov 18, 12:30 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Nov 18, 3:38 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	5 hr
Nov 18, 6:53 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	112 min
Nov 19, 8:27 AM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino, Gila, Yavapai	9 hr
Nov 19, 5:52 PM MST	Flash Flood Warning	PSR	Maricopa	4 hr
Nov 19, 6:43 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	5 hr

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 2024 2026

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.