Alert archive / Arizona / Maricopa County
Weather alerts in Maricopa County, Arizona, 2013
196 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Maricopa County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 196
- Warnings
- 55
- Watches
- 2
- Advisories
- 103
- Busiest month
- July64 alerts
- Busiest day
- July 21, 201320 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Maricopa County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 27 | 14 | 48% | 34 | 65% | 15 min |
| Flash flood warnings | 21 | 10 | 52% | 13 | 100% | 55 min |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Phoenix, AZ: severe thunderstorm warnings | 59 | 26 | 56% | 65 | 68% | 18 min |
| NWS Phoenix, AZ: flash flood warnings | 44 | 19 | 57% | 38 | 84% | 55 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 26, 9:51 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Jan 26, 10:12 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Jan 26, 1:07 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Jan 26, 11:41 PM MST | Areal Flood Advisory | PSR | 8 hr |
| Jan 27, 4:50 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Jan 27, 7:47 PM MST | Areal Flood Advisory | PSR | 118 min |
| Jan 28, 2:24 AM MST | Areal Flood Advisory | PSR | 8 hr |
| Jan 28, 9:52 AM MST | Areal Flood Advisory | PSR | 6 hr |
| Jan 28, 10:22 AM MST | Areal Flood Advisory | PSR | 6 hr |
| Jan 28, 3:47 PM MST | Areal Flood Advisory | PSR | 8 hr |
| Jan 28, 4:28 PM MST | Areal Flood Advisory | PSR | 8 hr |
| Mar 8, 12:23 PM MST | Mesoscale Discussion | SPC | 97 min |
| Mar 8, 1:20 PM MST | Areal Flood Advisory | PSR | 115 min |
| Mar 8, 2:38 PM MST | Severe Thunderstorm Warning | PSR | 67 min |
| Apr 6, 4:51 AM MST | Fire Weather Watch | PSR | 32 hr |
| Apr 7, 12:31 PM MST | Red Flag Warning | PSR | 31 hr |
| Apr 10, 10:09 AM MST | Red Flag Warning | PSR | 9 hr |
| May 10, 9:06 PM MST | Special Weather Statement | PSR | 84 min |
| Jul 2, 5:57 PM MST | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 3:52 PM MST | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 9, 6:32 PM MST | Mesoscale Discussion | SPC | 28 min |
| Jul 10, 5:48 PM MST | Severe Thunderstorm Warning | PSR | 27 min |
| Jul 12, 11:36 AM MST | Special Weather Statement | PSR | 39 min |
| Jul 12, 12:43 PM MST | Severe Thunderstorm Warning | PSR | 62 min |
| Jul 12, 2:05 PM MST | Flash Flood Warning | PSR | 3 hr |
| Jul 14, 7:25 PM MST | Areal Flood Advisory | PSR | 110 min |
| Jul 14, 7:43 PM MST | Flash Flood Warning | PSR | 2 hr |
| Jul 15, 2:07 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Jul 15, 4:52 PM MST | Special Weather Statement | PSR | 38 min |
| Jul 15, 4:54 PM MST | Severe Thunderstorm Warning | PSR | 51 min |
| Jul 15, 5:27 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Jul 16, 6:15 PM MST | Special Weather Statement | PSR | 45 min |
| Jul 17, 4:47 PM MST | Special Weather Statement | PSR | 43 min |
| Jul 19, 8:45 PM MST | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 9:56 PM MST | Severe Thunderstorm Warning | PSR | 34 min |
| Jul 19, 10:01 PM MST | Severe Thunderstorm Warning | PSR | 29 min |
| Jul 19, 10:06 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Jul 19, 10:22 PM MST | Special Weather Statement | PSR | 38 min |
| Jul 19, 10:54 PM MST | Special Weather Statement | PSR | 51 min |
| Jul 19, 11:10 PM MST | Severe Thunderstorm Warning | PSR | 65 min |
| Jul 19, 11:39 PM MST | Special Weather Statement | PSR | 51 min |
| Jul 19, 11:48 PM MST | Areal Flood Advisory | PSR | 117 min |
| Jul 20, 12:56 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Jul 20, 3:35 PM MST | Severe Thunderstorm Warning | PSR | 55 min |
| Jul 20, 4:13 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Jul 20, 5:00 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Jul 20, 5:45 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Jul 20, 6:09 PM MST | Mesoscale Discussion | SPC | 96 min |
| Jul 20, 6:40 PM MST | Areal Flood Advisory | PSR | 110 min |
| Jul 20, 7:27 PM MST | Areal Flood Advisory | PSR | 108 min |
| Jul 20, 7:52 PM MST | Severe Thunderstorm Warning | PSR | 53 min |
| Jul 20, 8:41 PM MST | Areal Flood Advisory | PSR | 109 min |
| Jul 20, 9:07 PM MST | Special Weather Statement | PSR | 38 min |
| Jul 20, 9:15 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Jul 21, 6:55 AM MST | Areal Flood Advisory | PSR | 110 min |
| Jul 21, 9:39 AM MST | Special Weather Statement | PSR | 51 min |
| Jul 21, 10:04 AM MST | Areal Flood Advisory | PSR | 116 min |
| Jul 21, 10:30 AM MST | Special Weather Statement | PSR | 45 min |
| Jul 21, 10:57 AM MST | Areal Flood Advisory | PSR | 108 min |
| Jul 21, 11:27 AM MST | Areal Flood Advisory | PSR | 2 hr |
| Jul 21, 12:12 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Jul 21, 12:52 PM MST | Flash Flood Warning | PSR | 3 hr |
| Jul 21, 1:39 PM MST | Flash Flood Warning | PSR | 3 hr |
| Jul 21, 3:12 PM MST | Areal Flood Advisory | PSR | 108 min |
| Jul 21, 3:49 PM MST | Areal Flood Warning | PSR | 3 hr |
| Jul 22, 11:03 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Jul 22, 12:58 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Jul 22, 2:15 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Jul 22, 4:24 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Jul 22, 5:20 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Jul 24, 3:23 PM MST | Flash Flood Warning | PSR | 3 hr |
| Jul 25, 6:58 AM MST | Areal Flood Advisory | PSR | 2 hr |
| Jul 25, 3:17 PM MST | Mesoscale Discussion | SPC | 2 hr |
| Jul 25, 4:26 PM MST | Flash Flood Warning | PSR | 2 hr |
| Jul 25, 5:25 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Jul 26, 8:37 AM MST | Areal Flood Advisory | PSR | 113 min |
| Jul 26, 9:52 AM MST | Areal Flood Advisory | PSR | 113 min |
| Jul 26, 12:06 PM MST | Areal Flood Advisory | PSR | 114 min |
| Jul 26, 2:18 PM MST | Severe Thunderstorm Warning | PSR | 57 min |
| Jul 26, 2:59 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Jul 26, 11:00 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Jul 26, 11:48 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Aug 3, 8:00 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Aug 14, 11:54 PM MST | Special Weather Statement | PSR | 51 min |
| Aug 16, 3:40 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Aug 16, 4:18 PM MST | Severe Thunderstorm Warning | PSR | 57 min |
| Aug 16, 4:30 PM MST | Severe Thunderstorm Warning | PSR | 60 min |
| Aug 16, 4:45 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Aug 17, 5:03 PM MST | Severe Thunderstorm Warning | PSR | 57 min |
| Aug 17, 6:47 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Aug 18, 3:08 PM MST | Special Weather Statement | PSR | 52 min |
| Aug 18, 7:16 PM MST | Special Weather Statement | PSR | 44 min |
| Aug 18, 8:38 PM MST | Special Weather Statement | PSR | 37 min |
| Aug 18, 8:56 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Aug 24, 3:19 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Aug 24, 4:47 AM MST | Flash Flood Warning | PSR | 3 hr |
| Aug 24, 5:24 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Aug 24, 5:53 AM MST | Flash Flood Warning | PSR | 3 hr |
| Aug 24, 8:44 AM MST | Flash Flood Warning | PSR | 91 min |
| Aug 25, 6:28 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Aug 26, 3:04 PM MST | Mesoscale Discussion | SPC | 116 min |
| Aug 26, 3:53 PM MST | Severe Thunderstorm Warning | PSR | 22 min |
| Aug 26, 4:14 PM MST | Severe Thunderstorm Warning | PSR | 31 min |
| Aug 26, 4:17 PM MST | Areal Flood Advisory | PSR | 118 min |
| Aug 26, 5:10 PM MST | Areal Flood Advisory | PSR | 110 min |
| Aug 26, 5:54 PM MST | Areal Flood Advisory | PSR | 111 min |
| Aug 26, 6:21 PM MST | Severe Thunderstorm Warning | PSR | 24 min |
| Aug 26, 6:35 PM MST | Severe Thunderstorm Warning | PSR | 25 min |
| Aug 26, 6:36 PM MST | Flash Flood Warning | PSR | 114 min |
| Aug 26, 6:55 PM MST | Areal Flood Advisory | PSR | 110 min |
| Aug 26, 7:08 PM MST | Severe Thunderstorm Warning | PSR | 37 min |
| Aug 26, 7:31 PM MST | Areal Flood Advisory | PSR | 119 min |
| Aug 26, 8:26 PM MST | Areal Flood Advisory | PSR | 109 min |
| Aug 26, 9:11 PM MST | Severe Thunderstorm Warning | PSR | 34 min |
| Aug 26, 9:16 PM MST | Areal Flood Advisory | PSR | 119 min |
| Aug 26, 10:45 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Aug 27, 2:14 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Aug 27, 2:50 PM MST | Mesoscale Discussion | SPC | 2 hr |
| Aug 27, 5:23 PM MST | Severe Thunderstorm Warning | PSR | 52 min |
| Aug 27, 5:56 PM MST | Areal Flood Advisory | PSR | 109 min |
| Aug 27, 6:12 PM MST | Severe Thunderstorm Warning | PSR | 33 min |
| Aug 27, 6:42 PM MST | Flash Flood Warning | PSR | 2 hr |
| Aug 28, 2:41 PM MST | Mesoscale Discussion | SPC | 3 hr |
| Aug 28, 5:00 PM MST | Severe Thunderstorm Warning | PSR | 45 min |
| Aug 28, 6:18 PM MST | Special Weather Statement | PSR | 42 min |
| Aug 28, 7:23 PM MST | Severe Thunderstorm Warning | PSR | 52 min |
| Aug 28, 8:19 PM MST | Flash Flood Warning | PSR | 116 min |
| Aug 28, 8:39 PM MST | Special Weather Statement | PSR | 51 min |
| Aug 28, 8:53 PM MST | Flash Flood Warning | PSR | 112 min |
| Aug 28, 9:39 PM MST | Special Weather Statement | PSR | 51 min |
| Aug 28, 10:02 PM MST | Areal Flood Advisory | PSR | 118 min |
| Aug 28, 10:48 PM MST | Flash Flood Warning | PSR | 3 hr |
| Aug 29, 3:56 PM MST | Special Weather Statement | PSR | 49 min |
| Aug 29, 5:02 PM MST | Areal Flood Advisory | PSR | 118 min |
| Aug 29, 7:09 PM MST | Areal Flood Advisory | PSR | 111 min |
| Aug 29, 7:42 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Aug 30, 4:22 PM MST | Severe Thunderstorm Warning | PSR | 38 min |
| Aug 30, 4:36 PM MST | Areal Flood Advisory | PSR | 114 min |
| Aug 30, 5:48 PM MST | Areal Flood Advisory | PSR | 117 min |
| Aug 30, 6:08 PM MST | Flash Flood Warning | PSR | 112 min |
| Aug 30, 6:52 PM MST | Areal Flood Advisory | PSR | 113 min |
| Aug 31, 4:04 PM MST | Areal Flood Advisory | PSR | 116 min |
| Sep 2, 2:40 PM MST | Areal Flood Advisory | PSR | 110 min |
| Sep 6, 1:04 PM MST | Special Weather Statement | PSR | 41 min |
| Sep 6, 1:14 PM MST | Special Weather Statement | PSR | 31 min |
| Sep 6, 1:27 PM MST | Severe Thunderstorm Warning | PSR | 63 min |
| Sep 6, 1:53 PM MST | Areal Flood Advisory | PSR | 112 min |
| Sep 6, 2:29 PM MST | Severe Thunderstorm Warning | PSR | 61 min |
| Sep 6, 3:04 PM MST | Areal Flood Advisory | PSR | 116 min |
| Sep 6, 3:11 PM MST | Special Weather Statement | PSR | 49 min |
| Sep 6, 5:16 PM MST | Severe Thunderstorm Warning | PSR | 59 min |
| Sep 6, 5:33 PM MST | Areal Flood Advisory | PSR | 117 min |
| Sep 6, 6:03 PM MST | Special Weather Statement | PSR | 42 min |
| Sep 8, 8:16 AM MST | Areal Flood Advisory | PSR | 119 min |
| Sep 8, 9:04 AM MST | Areal Flood Advisory | PSR | 116 min |
| Sep 9, 10:37 AM MST | Areal Flood Advisory | PSR | 113 min |
| Sep 9, 11:09 AM MST | Flash Flood Warning | PSR | 81 min |
| Sep 9, 11:33 AM MST | Flash Flood Warning | PSR | 87 min |
| Sep 9, 12:10 PM MST | Areal Flood Advisory | PSR | 110 min |
| Sep 9, 12:23 PM MST | Flash Flood Warning | PSR | 3 hr |
| Sep 9, 12:29 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Sep 9, 12:35 PM MST | Flash Flood Warning | PSR | 85 min |
| Sep 9, 1:05 PM MST | Areal Flood Advisory | PSR | 115 min |
| Sep 9, 2:02 PM MST | Areal Flood Advisory | PSR | 118 min |
| Sep 9, 2:38 PM MST | Areal Flood Warning | PSR | 3 hr |
| Sep 9, 2:58 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Sep 9, 3:28 PM MST | Special Weather Statement | PSR | 62 min |
| Sep 9, 3:45 PM MST | Flash Flood Warning | PSR | 2 hr |
| Sep 9, 4:36 PM MST | Special Weather Statement | PSR | 39 min |
| Sep 9, 5:23 PM MST | Special Weather Statement | PSR | 67 min |
| Sep 9, 10:27 PM MST | Areal Flood Warning | PSR | 6 hr |
| Sep 10, 9:21 AM MST | Areal Flood Advisory | PSR | 114 min |
| Sep 10, 9:51 AM MST | Areal Flood Advisory | PSR | 114 min |
| Sep 10, 10:20 AM MST | Areal Flood Advisory | PSR | 115 min |
| Sep 10, 11:25 AM MST | Flash Flood Warning | PSR | 2 hr |
| Sep 10, 12:59 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Sep 10, 1:31 PM MST | Areal Flood Warning | PSR | 8 hr |
| Sep 10, 1:53 PM MST | Areal Flood Advisory | PSR | 112 min |
| Sep 10, 1:59 PM MST | Special Weather Statement | PSR | 46 min |
| Sep 10, 4:36 PM MST | Areal Flood Warning | PSR | 12 hr |
| Nov 22, 4:10 AM MST | Areal Flood Advisory | PSR | 4 hr |
| Nov 22, 6:24 AM MST | Areal Flood Advisory | PSR | 4 hr |
| Nov 22, 7:05 AM MST | Areal Flood Advisory | PSR | 10 hr |
| Nov 22, 8:02 AM MST | Areal Flood Advisory | PSR | 8 hr |
| Nov 22, 12:40 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Nov 22, 3:40 PM MST | Areal Flood Advisory | PSR | 4 hr |
| Nov 22, 3:49 PM MST | Areal Flood Advisory | PSR | 4 hr |
| Nov 22, 4:52 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Nov 22, 7:53 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Nov 22, 8:33 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Nov 22, 10:36 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Nov 22, 11:11 PM MST | Areal Flood Advisory | PSR | 4 hr |
| Nov 23, 2:57 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Nov 23, 5:40 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Nov 23, 9:49 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Dec 20, 4:19 AM MST | Areal Flood Advisory | PSR | 3 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 | 27 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 9 |
| Special Weather Statement | 27 |
| Flooding | |
| Areal Flood Warning | 5 |
| Flash Flood Warning | 21 |
| Areal Flood Advisory | 103 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.