Alert archive / Arizona / Gila County / Flash Flood Warnings

Flash Flood Warnings in Gila County, Arizona, 2021

112 flash flood warnings in 2021. An alert counts here when it covered this county. The archive of flash flood warnings reaches back to 1986.

Gila County and its neighbors

Each county as a circle sized by its count in 2021. Tap one for its archive.

Flash Flood Warnings: 112
Busiest month: July52 flash flood warnings
Busiest day: August 18, 202116 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.

35 of 112 flash flood warnings covering Gila County in 2021 had a flash flood report inside them; 45 of 62 flash flood reports fell inside a warning, on average 72 minutes after it went out.

Gila County, 2021

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Flash flood warnings	112	35	69%	62	73%	72 min

Each office's whole area, 2021

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Phoenix, AZ: flash flood warnings	255	102	60%	196	85%	87 min
NWS Flagstaff, AZ: flash flood warnings	235	69	71%	149	60%	87 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
Jun 29, 2:24 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jun 30, 2:38 PM MST	Flash Flood Warning Considerable damage threat	FGZ	2 hr
Jun 30, 4:08 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 1, 8:16 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 2, 4:00 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 2, 5:10 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 3, 4:54 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 3, 4:57 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 3, 5:32 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 3, 5:38 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 3, 6:23 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 3, 6:46 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 4, 3:09 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 4, 4:10 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 4, 5:02 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 4, 5:49 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 8, 6:10 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 9, 5:36 PM MST	Flash Flood Warning Considerable damage threat	PSR	6 hr
Jul 9, 9:18 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 9, 9:32 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 10, 4:40 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 10, 6:23 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 10, 7:10 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 12, 8:29 PM MST	Flash Flood Warning Considerable damage threat	PSR	3 hr
Jul 12, 10:14 PM MST	Flash Flood Warning Considerable damage threat	PSR	2 hr
Jul 13, 5:20 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 14, 8:18 AM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 14, 8:42 AM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 16, 4:41 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 18, 2:53 PM MST	Flash Flood Warning Considerable damage threat	FGZ	102 min
Jul 18, 5:31 PM MST	Flash Flood Warning Considerable damage threat	FGZ	59 min
Jul 18, 5:54 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 21, 12:17 AM MST	Flash Flood Warning Considerable damage threat	FGZ	118 min
Jul 21, 6:38 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 22, 9:54 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 22, 10:06 PM MST	Flash Flood Warning Considerable damage threat	FGZ	4 hr
Jul 22, 10:07 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 22, 11:15 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 22, 11:29 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 22, 11:43 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 23, 12:57 AM MST	Flash Flood Warning Considerable damage threat	FGZ	4 hr
Jul 24, 11:59 AM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 25, 12:11 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 25, 12:39 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 25, 2:10 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 27, 1:44 PM MST	Flash Flood Warning Considerable damage threat	PSR	2 hr
Jul 28, 4:43 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Jul 29, 1:36 PM MST	Flash Flood Warning Considerable damage threat	PSR	6 hr
Jul 29, 3:17 PM MST	Flash Flood Warning EmergencyCatastrophic damage threat	PSR	3 hr
Jul 29, 3:56 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jul 29, 8:02 PM MST	Flash Flood Warning Considerable damage threat	PSR	6 hr
Jul 29, 8:12 PM MST	Flash Flood Warning Considerable damage threat	FGZ	5 hr
Jul 30, 4:09 PM MST	Flash Flood Warning Considerable damage threat	FGZ	2 hr
Jul 30, 4:50 PM MST	Flash Flood Warning Considerable damage threat	PSR	69 min
Jul 31, 3:31 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 1, 3:58 PM MST	Flash Flood Warning	FGZ	3 hr
Aug 1, 4:51 PM MST	Flash Flood Warning	FGZ	3 hr
Aug 1, 5:28 PM MST	Flash Flood Warning Considerable damage threat	FGZ	5 hr
Aug 1, 5:47 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 1, 6:20 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 1, 7:26 PM MST	Flash Flood Warning Considerable damage threat	PSR	2 hr
Aug 1, 7:55 PM MST	Flash Flood Warning Considerable damage threat	FGZ	2 hr
Aug 1, 8:26 PM MST	Flash Flood Warning	FGZ	115 min
Aug 1, 8:59 PM MST	Flash Flood Warning	FGZ	85 min
Aug 8, 2:44 PM MST	Flash Flood Warning Considerable damage threat	PSR	118 min
Aug 9, 4:42 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 9, 10:40 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 11, 7:30 AM MST	Flash Flood Warning Considerable damage threat	PSR	6 hr
Aug 12, 2:42 AM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 12, 5:36 AM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 13, 3:36 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 13, 4:12 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 13, 8:15 PM MST	Flash Flood Warning Considerable damage threat	FGZ	2 hr
Aug 13, 9:49 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 13, 10:31 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 13, 10:39 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 15, 10:14 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 15, 10:50 PM MST	Flash Flood Warning Considerable damage threat	PSR	6 hr
Aug 16, 6:55 PM MST	Flash Flood Warning Considerable damage threat	PSR	6 hr
Aug 16, 10:01 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 16, 10:05 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 16, 10:22 PM MST	Flash Flood Warning Considerable damage threat	PSR	10 hr
Aug 16, 10:28 PM MST	Flash Flood Warning Considerable damage threat	PSR	10 hr
Aug 16, 10:36 PM MST	Flash Flood Warning Considerable damage threat	PSR	10 hr
Aug 17, 6:26 AM MST	Flash Flood Warning Considerable damage threat	PSR	5 hr
Aug 17, 12:04 PM MST	Flash Flood Warning Considerable damage threat	FGZ	3 hr
Aug 17, 5:16 PM MST	Flash Flood Warning Considerable damage threat	PSR	6 hr
Aug 17, 6:05 PM MST	Flash Flood Warning Considerable damage threat	PSR	6 hr
Aug 18, 7:55 AM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 18, 8:48 AM MST	Flash Flood Warning Considerable damage threat	PSR	6 hr
Aug 18, 9:26 AM MST	Flash Flood Warning Considerable damage threat	PSR	5 hr
Aug 18, 9:39 AM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 18, 9:44 AM MST	Flash Flood Warning Considerable damage threat	FGZ	7 hr
Aug 18, 10:16 AM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 18, 11:16 AM MST	Flash Flood Warning EmergencyCatastrophic damage threat	PSR	3 hr
Aug 18, 11:37 AM MST	Flash Flood Warning Considerable damage threat	PSR	5 hr
Aug 18, 12:28 PM MST	Flash Flood Warning Considerable damage threat	PSR	5 hr
Aug 18, 12:51 PM MST	Flash Flood Warning Considerable damage threat	FGZ	4 hr
Aug 18, 2:45 PM MST	Flash Flood Warning Considerable damage threat	PSR	6 hr
Aug 18, 3:11 PM MST	Flash Flood Warning Considerable damage threat	PSR	5 hr
Aug 18, 3:33 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 18, 3:46 PM MST	Flash Flood Warning Considerable damage threat	PSR	5 hr
Aug 18, 5:13 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 18, 5:39 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 18, 6:20 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 18, 7:59 PM MST	Flash Flood Warning Considerable damage threat	FGZ	4 hr
Aug 31, 4:55 PM MST	Flash Flood Warning Considerable damage threat	PSR	3 hr
Sep 1, 7:18 PM MST	Flash Flood Warning Considerable damage threat	PSR	88 min
Sep 5, 3:54 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Sep 5, 5:36 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Oct 5, 2:35 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Dec 24, 1:50 PM MST	Flash Flood Warning Considerable damage threat	PSR	4 hr

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2020 2022

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.