Alert archive / Arizona / Yuma County
Weather alerts in Yuma County, Arizona, 2008
74 weather alerts in 2008, 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 2008. Tap one for its archive.
- Alerts
- 74
- Warnings
- 39
- Watches
- 18
- Advisories
- 10
- Busiest month
- August13 alerts
- Busiest day
- July 10, 20086 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, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 14 | 2 | 86% | 4 | 50% | 15 min |
| Flash flood warnings | 2 | 0 | 100% | 0 |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Phoenix, AZ: severe thunderstorm warnings | 141 | 25 | 82% | 52 | 71% | 22 min |
| NWS Phoenix, AZ: flash flood warnings | 38 | 12 | 68% | 28 | 68% | 93 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, 3:46 AM MST | Red Flag Warning | PSR | 14 hr |
| Jan 15, 4:26 AM MST | Fire Weather Watch | PSR | 25 hr |
| Jan 16, 5:21 AM MST | Red Flag Warning | PSR | 14 hr |
| Jan 16, 10:04 PM MST | Red Flag Warning | PSR | 16 hr |
| Feb 12, 2:25 PM MST | Fire Weather Watch | PSR | 24 hr |
| Feb 13, 2:33 PM MST | Red Flag Warning | PSR | 29 hr |
| Mar 1, 6:20 AM MST | Fire Weather Watch | PSR | 8 hr |
| Mar 1, 2:17 PM MST | Red Flag Warning | PSR | 30 hr |
| Mar 4, 2:47 PM MST | Fire Weather Watch | PSR | 12 hr |
| Mar 5, 3:00 AM MST | Red Flag Warning | PSR | 18 hr |
| Mar 13, 2:20 PM MST | Fire Weather Watch | PSR | 14 hr |
| Mar 14, 4:28 AM MST | Red Flag Warning | PSR | 16 hr |
| Apr 7, 5:27 AM MST | Fire Weather Watch | PSR | 25 hr |
| Apr 8, 6:33 AM MST | Red Flag Warning | PSR | 14 hr |
| Apr 13, 3:30 PM MST | Fire Weather Watch | PSR | 24 hr |
| Apr 14, 3:26 PM MST | Red Flag Warning | PSR | 30 hr |
| Apr 16, 4:58 AM MST | Red Flag Warning | PSR | 12 hr |
| Apr 17, 4:51 AM MST | Fire Weather Watch | PSR | 48 hr |
| Apr 19, 9:20 AM MST | Red Flag Warning | PSR | 11 hr |
| Apr 27, 4:56 AM MST | Red Flag Warning | PSR | 7 hr |
| Apr 28, 2:27 PM MST | Fire Weather Watch | PSR | 39 hr |
| Apr 29, 1:54 PM MST | Red Flag Warning | PSR | 30 hr |
| May 1, 4:55 AM MST | Red Flag Warning | PSR | 13 hr |
| May 10, 2:52 PM MST | Fire Weather Watch | PSR | 9 min |
| May 10, 3:01 PM MST | Fire Weather Watch | PSR | 39 hr |
| May 12, 5:53 AM MST | Red Flag Warning | PSR | 15 hr |
| May 12, 2:43 PM MST | Red Flag Warning | PSR | 26 hr |
| May 15, 3:46 AM MST | Red Flag Warning | PSR | 15 hr |
| May 19, 3:34 AM MST | Fire Weather Watch | PSR | 35 hr |
| May 19, 3:08 PM MST | Fire Weather Watch | PSR | 14 hr |
| May 20, 3:01 AM MST | Red Flag Warning | PSR | 20 hr |
| May 20, 3:01 PM MST | Red Flag Warning | PSR | 30 hr |
| Jun 3, 2:30 PM MST | Fire Weather Watch | PSR | 15 hr |
| Jun 4, 5:56 AM MST | Red Flag Warning | PSR | 16 hr |
| Jul 9, 12:48 PM MST | Mesoscale Discussion | SPC | 87 min |
| Jul 10, 12:57 PM MST | Mesoscale Discussion | SPC | 93 min |
| Jul 10, 2:54 PM MST | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 10, 3:14 PM MST | Severe Thunderstorm Warning | PSR | 46 min |
| Jul 10, 3:57 PM MST | Severe Thunderstorm Warning | PSR | 32 min |
| Jul 10, 4:00 PM MST | Areal Flood Advisory | PSR | 2 hr |
| Jul 10, 4:42 PM MST | Mesoscale Discussion | SPC | 63 min |
| Jul 12, 5:10 PM MST | Areal Flood Advisory | PSR | 110 min |
| Aug 7, 5:25 PM MST | Areal Flood Advisory | PSR | 110 min |
| Aug 25, 3:48 PM MST | Severe Thunderstorm Warning | PSR | 42 min |
| Aug 25, 5:58 PM MST | Severe Thunderstorm Warning | PSR | 47 min |
| Aug 25, 6:59 PM MST | Flash Flood Warning | PSR | 91 min |
| Aug 27, 3:16 PM MST | Mesoscale Discussion | SPC | 89 min |
| Aug 28, 11:48 PM MST | Severe Thunderstorm Warning | PSR | 57 min |
| Aug 29, 12:51 AM MST | Severe Thunderstorm Warning | PSR | 54 min |
| Aug 29, 1:11 AM MST | Areal Flood Advisory | PSR | 109 min |
| Aug 29, 1:11 AM MST | Severe Thunderstorm Warning | PSR | 35 min |
| Aug 29, 3:46 PM MST | Mesoscale Discussion | SPC | 119 min |
| Aug 29, 4:55 PM MST | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 29, 8:22 PM MST | Mesoscale Discussion | SPC | 113 min |
| Aug 31, 3:38 PM MST | Areal Flood Advisory | PSR | 112 min |
| Sep 9, 9:01 PM MST | Severe Thunderstorm Warning | PSR | 53 min |
| Sep 10, 11:47 AM MST | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 10, 12:59 PM MST | Severe Thunderstorm Warning | PSR | 46 min |
| Sep 10, 3:05 PM MST | Severe Thunderstorm Warning | PSR | 55 min |
| Sep 11, 11:49 AM MST | Mesoscale Discussion | SPC | 116 min |
| Sep 11, 12:01 PM MST | Severe Thunderstorm Warning | PSR | 59 min |
| Sep 11, 12:59 PM MST | Severe Thunderstorm Warning | PSR | 31 min |
| Sep 11, 1:35 PM MST | Areal Flood Advisory | PSR | 115 min |
| Sep 11, 1:57 PM MST | Areal Flood Advisory | PSR | 108 min |
| Sep 16, 2:35 PM MST | Severe Thunderstorm Warning | PSR | 25 min |
| Sep 16, 3:03 PM MST | Severe Thunderstorm Warning | PSR | 42 min |
| Oct 10, 4:20 AM MST | Fire Weather Watch | PSR | 11 hr |
| Oct 11, 4:30 AM MST | Red Flag Warning | PSR | 10 hr |
| Oct 12, 2:42 PM MST | Red Flag Warning | PSR | 29 hr |
| Nov 15, 8:47 AM MST | Red Flag Warning | PSR | 9 hr |
| Nov 26, 11:36 AM MST | Areal Flood Advisory | PSR | 4 hr |
| Nov 26, 7:37 PM MST | Areal Flood Advisory | PSR | 3 hr |
| Nov 26, 8:48 PM MST | Flash Flood Warning | PSR | 117 min |
| Nov 26, 10:36 PM MST | Areal Flood Advisory | PSR | 114 min |
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 | 14 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 7 |
| Flooding | |
| Flash Flood Warning | 2 |
| Areal Flood Advisory | 10 |
| Fire | |
| Red Flag Warning | 23 |
| Fire Weather Watch | 15 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20072009
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.