Alert archive / Arizona / Yuma County
Weather alerts in Yuma County, Arizona, 2018
145 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Yuma County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 145
- Warnings
- 43
- Watches
- 19
- Advisories
- 56
- Busiest month
- July44 alerts
- Busiest day
- September 30, 201822 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado reports fell inside a warning.
Yuma County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 1 | 0% | |||
| Severe thunderstorm warnings | 4 | 0 | 100% | 4 | 0% | |
| Flash flood warnings | 10 | 5 | 50% | 6 | 67% | 53 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Phoenix, AZ: tornado warnings | 0 | 3 | 0% | |||
| NWS Phoenix, AZ: severe thunderstorm warnings | 107 | 39 | 64% | 216 | 54% | 17 min |
| NWS Phoenix, AZ: flash flood warnings | 121 | 73 | 40% | 143 | 85% | 71 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 |
|---|---|---|---|
| Mar 14, 6:07 PM MST | Blowing Dust Advisory | PSR | 3 hr |
| Apr 7, 4:36 PM MST | Blowing Dust Advisory | PSR | 3 hr |
| Apr 9, 2:38 PM MST | Fire Weather Watch | PSR | 18 hr |
| Apr 10, 8:09 AM MST | Red Flag Warning | PSR | 61 hr |
| Apr 12, 4:46 AM MST | Red Flag Warning | PSR | 38 hr |
| Apr 12, 9:41 AM MST | Blowing Dust Advisory | PSR | 12 hr |
| Apr 14, 2:21 PM MST | Fire Weather Watch | PSR | 36 hr |
| Apr 17, 2:27 AM MST | Fire Weather Watch | PSR | 36 hr |
| Apr 18, 4:51 AM MST | Red Flag Warning | PSR | 39 hr |
| May 3, 3:02 AM MST | Excessive Heat Watch | PSR | 33 hr |
| May 4, 12:29 PM MST | Excessive Heat Warning | PSR | 56 hr |
| May 9, 3:49 AM MST | Fire Weather Watch | PSR | 24 hr |
| May 10, 3:20 AM MST | Red Flag Warning | PSR | 41 hr |
| Jun 11, 1:46 PM MST | Excessive Heat Warning | PSR | 54 hr |
| Jun 16, 6:28 AM MST | Areal Flood Advisory | PSR | 2 hr |
| Jun 19, 3:35 AM MST | Excessive Heat Watch | PSR | 10 hr |
| Jun 19, 1:31 PM MST | Excessive Heat Warning | PSR | 3 days |
| Jul 2, 1:35 PM MST | Excessive Heat Watch | PSR | 38 hr |
| Jul 4, 3:27 AM MST | Excessive Heat Warning | PSR | 66 hr |
| Jul 4, 3:27 AM MST | Excessive Heat Warning | PSR | 66 hr |
| Jul 7, 5:14 PM MST | Special Weather Statement | PSR | 46 min |
| Jul 7, 5:30 PM MST | Dust Storm Warning | PSR | 90 min |
| Jul 7, 6:52 PM MST | Dust Storm Advisory | PSR | 98 min |
| Jul 8, 10:44 PM MST | Dust Storm Warning | PSR | 61 min |
| Jul 8, 11:12 PM MST | Dust Storm Warning | PSR | 63 min |
| Jul 9, 12:03 AM MST | Dust Storm Advisory | PSR | 57 min |
| Jul 9, 12:50 AM MST | Dust Storm Advisory | PSR | 55 min |
| Jul 9, 4:57 PM MST | Mesoscale Discussion | SPC | 93 min |
| Jul 9, 5:50 PM MST | Dust Storm Advisory | PSR | 25 min |
| Jul 9, 6:19 PM MST | Dust Storm Advisory | PSR | 26 min |
| Jul 9, 6:32 PM MST | Dust Storm Warning | PSR | 58 min |
| Jul 9, 6:34 PM MST | Dust Storm Advisory | PSR | 86 min |
| Jul 9, 6:59 PM MST | Dust Storm Warning | PSR | 31 min |
| Jul 9, 7:22 PM MST | Special Weather Statement | PSR | 38 min |
| Jul 9, 7:25 PM MST | Dust Storm Warning | PSR | 95 min |
| Jul 9, 7:59 PM MST | Special Weather Statement | PSR | 46 min |
| Jul 9, 8:08 PM MST | Severe Thunderstorm Warning | PSR | 37 min |
| Jul 9, 8:44 PM MST | Severe Thunderstorm Warning | PSR | 31 min |
| Jul 11, 11:41 AM MST | Flash Flood Watch | PSR | 14 hr |
| Jul 11, 1:05 PM MST | Flash Flood Warning | PSR | 4 hr |
| Jul 11, 2:02 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Jul 15, 6:28 PM MST | Dust Storm Advisory | PSR | 62 min |
| Jul 17, 8:09 PM MST | Dust Storm Advisory | PSR | 66 min |
| Jul 18, 3:27 AM MST | Excessive Heat Watch | PSR | 48 hr |
| Jul 18, 4:42 AM MST | Special Weather Statement | PSR | 48 min |
| Jul 18, 5:37 AM MST | Special Weather Statement | PSR | 38 min |
| Jul 18, 6:15 AM MST | Special Weather Statement | PSR | 45 min |
| Jul 18, 6:51 AM MST | Special Weather Statement | PSR | 39 min |
| Jul 20, 3:13 AM MST | Excessive Heat Warning | PSR | 8 days |
| Jul 21, 4:41 AM MST | Dust Storm Advisory | PSR | 49 min |
| Jul 21, 5:25 AM MST | Dust Storm Advisory | PSR | 50 min |
| Jul 21, 5:59 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Jul 21, 6:10 AM MST | Dust Storm Advisory | PSR | 50 min |
| Jul 21, 6:51 AM MST | Dust Storm Advisory | PSR | 39 min |
| Jul 21, 7:29 AM MST | Dust Storm Advisory | PSR | 61 min |
| Jul 28, 10:39 AM MST | Blowing Dust Advisory | PSR | 15 hr |
| Jul 28, 4:09 PM MST | Mesoscale Discussion | SPC | 66 min |
| Jul 28, 9:16 PM MST | Dust Storm Warning | PSR | 44 min |
| Jul 28, 10:12 PM MST | Dust Storm Warning | PSR | 33 min |
| Jul 30, 9:15 PM MST | Dust Storm Advisory | PSR | 60 min |
| Jul 30, 10:07 PM MST | Dust Storm Advisory | PSR | 38 min |
| Aug 4, 2:32 PM MST | Excessive Heat Watch | PSR | 11 hr |
| Aug 5, 1:22 AM MST | Excessive Heat Warning | PSR | 67 hr |
| Aug 8, 7:56 PM MST | Dust Storm Warning | PSR | 64 min |
| Aug 8, 8:31 PM MST | Dust Storm Advisory | PSR | 89 min |
| Aug 8, 8:33 PM MST | Dust Storm Warning | PSR | 57 min |
| Aug 8, 8:48 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Aug 8, 9:04 PM MST | Dust Storm Warning | PSR | 41 min |
| Aug 9, 12:22 AM MST | Dust Storm Advisory | PSR | 38 min |
| Aug 9, 9:48 PM MST | Dust Storm Warning | PSR | 27 min |
| Aug 9, 10:18 PM MST | Dust Storm Warning | PSR | 42 min |
| Aug 9, 11:04 PM MST | Dust Storm Advisory | PSR | 56 min |
| Aug 10, 11:17 AM MST | Flash Flood Watch | PSR | 18 hr |
| Aug 11, 12:20 AM MST | Dust Storm Advisory | PSR | 40 min |
| Aug 11, 6:41 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Aug 11, 9:52 AM MST | Areal Flood Warning | PSR | 38 min |
| Aug 12, 3:40 PM MST | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 12, 6:00 PM MST | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 7:27 PM MST | Dust Storm Advisory | PSR | 48 min |
| Aug 12, 8:18 PM MST | Mesoscale Discussion | SPC | 57 min |
| Aug 12, 9:54 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Aug 12, 11:05 PM MST | Dust Storm Advisory | PSR | 55 min |
| Aug 12, 11:17 PM MST | Special Weather Statement | PSR | 58 min |
| Aug 12, 11:53 PM MST | Dust Storm Advisory | PSR | 67 min |
| Aug 13, 1:14 AM MST | Special Weather Statement | PSR | 31 min |
| Aug 14, 11:48 PM MST | Special Weather Statement | PSR | 27 min |
| Aug 15, 11:43 AM MST | Special Weather Statement | PSR | 47 min |
| Aug 15, 2:40 PM MST | Dust Storm Advisory | PSR | 95 min |
| Aug 15, 3:20 PM MST | Flash Flood Warning | PSR | 115 min |
| Aug 16, 11:03 AM MST | Flash Flood Watch | PSR | 9 hr |
| Aug 16, 2:50 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Aug 16, 3:22 PM MST | Flash Flood Warning | PSR | 3 hr |
| Aug 16, 4:10 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Aug 16, 4:27 PM MST | Special Weather Statement | PSR | 48 min |
| Aug 16, 4:30 PM MST | Flash Flood Warning | PSR | 3 hr |
| Aug 16, 4:36 PM MST | Flash Flood Warning | PSR | 3 hr |
| Aug 16, 4:40 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Aug 16, 5:05 PM MST | Dust Storm Advisory | PSR | 55 min |
| Aug 16, 5:20 PM MST | Flash Flood Warning | PSR | 3 hr |
| Aug 25, 3:02 PM MST | Special Weather Statement | PSR | 43 min |
| Sep 6, 3:08 AM MST | Excessive Heat Watch | PSR | 23 hr |
| Sep 7, 2:19 AM MST | Excessive Heat Warning | PSR | 42 hr |
| Sep 19, 2:39 PM MST | Dust Storm Advisory | PSR | 51 min |
| Sep 28, 2:01 PM MST | Flash Flood Watch | PSR | 5 days |
| Sep 30, 11:01 AM MST | Special Weather Statement | PSR | 44 min |
| Sep 30, 11:14 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Sep 30, 11:48 AM MST | Special Weather Statement | PSR | 42 min |
| Sep 30, 11:58 AM MST | Dust Storm Advisory | PSR | 32 min |
| Sep 30, 12:04 PM MST | Special Weather Statement | PSR | 41 min |
| Sep 30, 12:08 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Sep 30, 12:10 PM MST | Special Weather Statement | PSR | 35 min |
| Sep 30, 12:13 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Sep 30, 12:28 PM MST | Dust Storm Advisory | PSR | 47 min |
| Sep 30, 12:31 PM MST | Special Weather Statement | PSR | 44 min |
| Sep 30, 12:47 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Sep 30, 12:58 PM MST | Severe Thunderstorm Warning | PSR | 32 min |
| Sep 30, 1:05 PM MST | Special Weather Statement | PSR | 40 min |
| Sep 30, 1:10 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Sep 30, 1:19 PM MST | Dust Storm Advisory | PSR | 41 min |
| Sep 30, 1:22 PM MST | Severe Thunderstorm Warning | PSR | 23 min |
| Sep 30, 1:31 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Sep 30, 1:49 PM MST | Special Weather Statement | PSR | 41 min |
| Sep 30, 2:04 PM MST | Flash Flood Warning | PSR | 3 hr |
| Sep 30, 2:08 PM MST | Flash Flood Warning | PSR | 4 hr |
| Sep 30, 3:23 PM MST | Special Weather Statement | PSR | 52 min |
| Sep 30, 3:26 PM MST | Blowing Dust Advisory | PSR | 4 hr |
| Oct 2, 5:02 AM MST | Areal Flood Advisory | PSR | 4 hr |
| Oct 3, 11:21 AM MST | Special Weather Statement | PSR | 24 min |
| Oct 3, 2:09 PM MST | Special Weather Statement | PSR | 36 min |
| Oct 12, 9:41 AM MST | Areal Flood Advisory | PSR | 2 hr |
| Oct 13, 2:52 AM MST | Flash Flood Watch | PSR | 25 hr |
| Oct 13, 3:27 PM MST | Flash Flood Warning | PSR | 4 hr |
| Oct 13, 5:59 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Oct 13, 6:13 PM MST | Flash Flood Warning | PSR | 4 hr |
| Oct 13, 7:14 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Oct 13, 8:06 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Oct 13, 9:10 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Nov 8, 5:14 AM MST | Dense Fog Advisory | PSR | 4 hr |
| Nov 10, 2:46 AM MST | Fire Weather Watch | PSR | 12 hr |
| Nov 10, 2:53 PM MST | Red Flag Warning | PSR | 31 hr |
| Dec 7, 7:10 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Dec 26, 2:40 AM MST | Freeze Watch | PSR | 36 hr |
| Dec 26, 1:26 PM MST | Freeze Watch | PSR | 25 hr |
| Dec 27, 2:37 PM MST | Freeze Warning | PSR | 42 hr |
| Dec 27, 2:37 PM MST | Freeze Warning | PSR | 66 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 | 4 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 4 |
| Special Weather Statement | 23 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 10 |
| Flash Flood Watch | 5 |
| Areal Flood Advisory | 22 |
| Heat | |
| Excessive Heat Warning | 8 |
| Excessive Heat Watch | 6 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 2 |
| Wind and dust | |
| Dust Storm Warning | 13 |
| Blowing Dust Advisory | 5 |
| Dust Storm Advisory | 28 |
| Fire | |
| Red Flag Warning | 5 |
| Fire Weather Watch | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.