Alert archive / Arizona / Yuma County
Weather alerts in Yuma County, Arizona, 2017
69 weather alerts in 2017, 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 2017. Tap one for its archive.
- Alerts
- 69
- Warnings
- 24
- Watches
- 7
- Advisories
- 21
- Busiest month
- September22 alerts
- Busiest day
- August 3, 201713 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Yuma County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 7 | 2 | 71% | 11 | 18% | 3 min |
| Flash flood warnings | 3 | 0 | 100% | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Phoenix, AZ: tornado warnings | 0 | 1 | 0% | |||
| NWS Phoenix, AZ: severe thunderstorm warnings | 79 | 28 | 65% | 92 | 49% | 17 min |
| NWS Phoenix, AZ: flash flood warnings | 75 | 37 | 51% | 72 | 81% | 86 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 1, 4:52 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Mar 22, 10:48 PM MST | Special Weather Statement | PSR | 42 min |
| Mar 27, 4:30 AM MST | Fire Weather Watch | PSR | 8 hr |
| Mar 27, 12:52 PM MST | Red Flag Warning | PSR | 30 hr |
| Mar 30, 2:56 AM MST | Red Flag Warning | PSR | 17 hr |
| Apr 24, 1:59 PM MST | Red Flag Warning | PSR | 31 hr |
| Apr 26, 2:12 PM MST | Fire Weather Watch | PSR | 13 hr |
| Apr 27, 3:40 AM MST | Red Flag Warning | PSR | 41 hr |
| Apr 28, 2:25 PM MST | Red Flag Warning | PSR | 29 hr |
| May 3, 2:15 PM MST | Fire Weather Watch | PSR | 47 hr |
| May 5, 2:24 AM MST | Wind Advisory | PSR | 47 hr |
| May 5, 1:32 PM MST | Red Flag Warning | PSR | 30 hr |
| May 6, 4:15 PM MST | Blowing Dust Advisory | PSR | 4 hr |
| May 13, 3:09 AM MST | Fire Weather Watch | PSR | 11 hr |
| May 23, 3:05 AM MST | Excessive Heat Warning | PSR | 17 hr |
| Jun 12, 2:45 AM MST | Excessive Heat Watch | PSR | 75 days |
| Jun 14, 2:50 AM MST | Excessive Heat Warning | PSR | 13 days |
| Jul 4, 2:13 PM MST | Excessive Heat Warning | PSR | 3 days |
| Jul 8, 7:10 PM MST | Blowing Dust Advisory | PSR | 3 hr |
| Jul 9, 11:44 AM MST | Blowing Dust Advisory | PSR | 10 hr |
| Jul 14, 5:12 PM MST | Blowing Dust Advisory | PSR | 4 hr |
| Jul 14, 7:59 PM MST | Special Weather Statement | PSR | 61 min |
| Jul 14, 8:29 PM MST | Severe Thunderstorm Warning | PSR | 31 min |
| Jul 15, 8:55 PM MST | Special Weather Statement | PSR | 65 min |
| Jul 24, 11:10 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Jul 24, 6:36 PM MST | Special Weather Statement | PSR | 24 min |
| Jul 24, 7:00 PM MST | Special Weather Statement | PSR | 30 min |
| Aug 2, 4:42 PM MST | Special Weather Statement | PSR | 48 min |
| Aug 2, 5:11 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Aug 2, 5:33 PM MST | Severe Thunderstorm Warning | PSR | 42 min |
| Aug 2, 5:42 PM MST | Blowing Dust Advisory | PSR | 78 min |
| Aug 3, 2:43 PM MST | Special Weather Statement | PSR | 47 min |
| Aug 3, 2:59 PM MST | Blowing Dust Advisory | PSR | 2 hr |
| Aug 3, 3:28 PM MST | Special Weather Statement | PSR | 47 min |
| Aug 3, 3:32 PM MST | Special Weather Statement | PSR | 43 min |
| Aug 3, 3:51 PM MST | Special Weather Statement | PSR | 39 min |
| Aug 3, 4:13 PM MST | Special Weather Statement | PSR | 47 min |
| Aug 3, 4:16 PM MST | Areal Flood Advisory | PSR | 119 min |
| Aug 3, 4:18 PM MST | Severe Thunderstorm Warning | PSR | 27 min |
| Aug 3, 4:36 PM MST | Flash Flood Warning | PSR | 3 hr |
| Aug 3, 4:44 PM MST | Special Weather Statement | PSR | 46 min |
| Aug 10, 6:24 PM MST | Special Weather Statement | PSR | 51 min |
| Aug 26, 2:50 AM MST | Excessive Heat Warning | PSR | 5 days |
| Sep 2, 2:17 PM MST | Special Weather Statement | PSR | 43 min |
| Sep 2, 3:06 PM MST | Special Weather Statement | PSR | 39 min |
| Sep 2, 3:16 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Sep 2, 3:55 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Sep 5, 8:24 PM MST | Blowing Dust Advisory | PSR | 96 min |
| Sep 7, 11:26 AM MST | Blowing Dust Advisory | PSR | 9 hr |
| Sep 7, 2:10 PM MST | Flash Flood Watch | PSR | 54 hr |
| Sep 7, 6:22 PM MST | Dust Storm Warning | PSR | 98 min |
| Sep 7, 6:27 PM MST | Severe Thunderstorm Warning | PSR | 48 min |
| Sep 7, 7:24 PM MST | Flash Flood Warning | PSR | 3 hr |
| Sep 7, 7:52 PM MST | Severe Thunderstorm Warning | PSR | 38 min |
| Sep 7, 8:06 PM MST | Severe Thunderstorm Warning | PSR | 54 min |
| Sep 7, 9:27 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Sep 8, 1:09 PM MST | Blowing Dust Advisory | PSR | 7 hr |
| Sep 8, 3:34 PM MST | Special Weather Statement | PSR | 41 min |
| Sep 8, 3:40 PM MST | Dust Storm Warning | PSR | 80 min |
| Sep 8, 4:07 PM MST | Severe Thunderstorm Warning | PSR | 23 min |
| Sep 9, 12:33 AM MST | Flash Flood Watch | PSR | 20 hr |
| Sep 9, 9:43 AM MST | Areal Flood Advisory | PSR | 3 hr |
| Sep 9, 10:59 AM MST | Flash Flood Warning | PSR | 2 hr |
| Sep 9, 1:49 PM MST | Special Weather Statement | PSR | 41 min |
| Sep 9, 2:41 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Oct 20, 11:15 AM MST | Blowing Dust Advisory | PSR | 7 hr |
| Dec 7, 3:28 AM MST | Red Flag Warning | PSR | 13 hr |
| Dec 14, 2:41 AM MST | Red Flag Warning | PSR | 14 hr |
| Dec 21, 11:28 AM MST | Blowing Dust Advisory | PSR | 6 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 | 7 |
| Special Weather Statement | 17 |
| Flooding | |
| Flash Flood Warning | 3 |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 9 |
| Heat | |
| Excessive Heat Warning | 4 |
| Excessive Heat Watch | 1 |
| Wind and dust | |
| Dust Storm Warning | 2 |
| Blowing Dust Advisory | 11 |
| Wind Advisory | 1 |
| Fire | |
| Red Flag Warning | 8 |
| Fire Weather Watch | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.