Alert archive / Arizona / Coconino County
Weather alerts in Coconino County, Arizona, 2017
144 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Coconino County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 144
- Warnings
- 57
- Watches
- 17
- Advisories
- 58
- Busiest month
- July42 alerts
- Busiest day
- July 18, 201711 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Coconino County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 0 | 100% | 3 | 0% | |
| Flash flood warnings | 28 | 8 | 71% | 11 | 82% | 134 min |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Flagstaff, AZ: severe thunderstorm warnings | 48 | 7 | 85% | 23 | 30% | 13 min |
| NWS Flagstaff, AZ: flash flood warnings | 91 | 37 | 59% | 67 | 76% | 90 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, 3:22 AM MST | Winter Weather Advisory | FGZ | 9 hr |
| Jan 1, 2:41 PM MST | Wind Advisory | FGZ | 27 hr |
| Jan 4, 7:01 PM MST | Wind Advisory | FGZ | 10 hr |
| Jan 5, 12:35 PM MST | Wind Advisory | FGZ | 18 hr |
| Jan 5, 12:57 PM MST | Winter Weather Advisory | FGZ | 18 hr |
| Jan 9, 3:43 AM MST | Wind Advisory | FGZ | 16 hr |
| Jan 10, 2:30 PM MST | Wind Advisory | FGZ | 18 hr |
| Jan 18, 4:12 AM MST | Winter Storm Watch | FGZ | 10 hr |
| Jan 18, 2:41 PM MST | Winter Storm Warning | FGZ | 3 days |
| Jan 21, 3:00 PM MST | Winter Storm Watch | FGZ | 13 hr |
| Jan 22, 3:50 AM MST | Winter Storm Warning | FGZ | 49 hr |
| Jan 22, 3:50 AM MST | Winter Weather Advisory | FGZ | 49 hr |
| Jan 23, 3:37 AM MST | Wind Advisory | FGZ | 13 hr |
| Feb 17, 12:40 PM MST | Flash Flood Watch | FGZ | 39 hr |
| Feb 17, 2:47 PM MST | Winter Weather Advisory | FGZ | 48 hr |
| Feb 18, 3:48 AM MST | Wind Advisory | FGZ | 13 hr |
| Feb 22, 3:46 AM MST | Wind Advisory | FGZ | 14 hr |
| Feb 26, 2:39 AM MST | Winter Storm Watch | FGZ | 12 hr |
| Feb 26, 2:13 PM MST | Winter Storm Warning | FGZ | 48 hr |
| Feb 26, 2:13 PM MST | Winter Weather Advisory | FGZ | 48 hr |
| Feb 27, 9:52 AM MST | Wind Advisory | FGZ | 9 hr |
| Feb 28, 5:20 AM MST | Areal Flood Advisory | FGZ | 12 hr |
| Mar 4, 3:46 AM MST | Wind Advisory | FGZ | 55 hr |
| Mar 23, 12:51 AM MST | Winter Weather Advisory | FGZ | 6 hr |
| Mar 29, 2:04 PM MST | High Wind Warning | FGZ | 30 hr |
| Mar 29, 2:04 PM MST | Wind Advisory | FGZ | 39 hr |
| Mar 30, 2:55 PM MST | Winter Weather Advisory | FGZ | 38 hr |
| Mar 30, 8:10 PM MST | Special Weather Statement | FGZ | 65 min |
| Apr 2, 2:44 PM MST | Wind Advisory | FGZ | 29 hr |
| Apr 3, 3:58 PM MST | Special Weather Statement | FGZ | 47 min |
| Apr 3, 5:03 PM MST | Special Weather Statement | FGZ | 42 min |
| Apr 7, 3:07 AM MST | Fire Weather Watch | FGZ | 10 hr |
| Apr 7, 1:35 PM MST | Red Flag Warning | FGZ | 29 hr |
| Apr 7, 1:40 PM MST | Wind Advisory | FGZ | 30 hr |
| Apr 21, 4:22 AM MST | Fire Weather Watch | FGZ | 34 hr |
| Apr 22, 2:37 PM MST | Fire Weather Watch | FGZ | 24 hr |
| Apr 22, 2:37 PM MST | Red Flag Warning | FGZ | 28 hr |
| Apr 23, 4:04 AM MST | Wind Advisory | FGZ | 15 hr |
| Apr 23, 2:18 PM MST | Wind Advisory | FGZ | 29 hr |
| Apr 23, 2:40 PM MST | Red Flag Warning | FGZ | 29 hr |
| Apr 24, 9:19 PM MST | Wind Advisory | FGZ | 22 hr |
| Apr 27, 3:32 AM MST | Wind Advisory | FGZ | 15 hr |
| May 4, 2:02 PM MST | Fire Weather Watch | FGZ | 25 hr |
| May 5, 2:29 PM MST | Wind Advisory | FGZ | 29 hr |
| May 5, 2:43 PM MST | Red Flag Warning | FGZ | 28 hr |
| May 7, 3:20 AM MST | Wind Advisory | FGZ | 12 hr |
| May 11, 3:25 PM MST | Wind Advisory | FGZ | 53 hr |
| May 14, 2:30 PM MST | Wind Advisory | FGZ | 29 hr |
| May 15, 4:04 AM MST | Red Flag Warning | FGZ | 15 hr |
| May 16, 1:40 PM MST | Wind Advisory | FGZ | 30 hr |
| May 23, 3:51 AM MST | Fire Weather Watch | FGZ | 24 hr |
| May 24, 3:44 AM MST | Red Flag Warning | FGZ | 40 hr |
| May 24, 4:21 AM MST | Wind Advisory | FGZ | 40 hr |
| May 25, 3:15 PM MST | Red Flag Warning | FGZ | 29 hr |
| Jun 8, 9:12 AM MST | Red Flag Warning | FGZ | 34 hr |
| Jun 8, 2:41 PM MST | Fire Weather Watch | FGZ | 24 hr |
| Jun 9, 2:36 PM MST | Wind Advisory | FGZ | 52 hr |
| Jun 9, 3:00 PM MST | Red Flag Warning | FGZ | 28 hr |
| Jun 9, 3:00 PM MST | Red Flag Warning | FGZ | 3 days |
| Jun 10, 3:23 AM MST | Wind Advisory | FGZ | 16 hr |
| Jun 11, 2:14 PM MST | Wind Advisory | FGZ | 28 hr |
| Jun 13, 3:08 AM MST | Excessive Heat Watch | FGZ | 36 hr |
| Jun 14, 2:52 PM MST | Excessive Heat Warning | FGZ | 11 days |
| Jun 14, 2:52 PM MST | Heat Advisory | FGZ | 8 days |
| Jun 26, 3:01 PM MST | Red Flag Warning | FGZ | 29 hr |
| Jun 27, 3:13 PM MST | Red Flag Warning | FGZ | 29 hr |
| Jul 5, 2:05 AM MST | Excessive Heat Warning | FGZ | 66 hr |
| Jul 11, 4:16 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 16, 3:31 AM MST | Flash Flood Watch | FGZ | 42 hr |
| Jul 16, 6:44 PM MST | Areal Flood Advisory | FGZ | 2 hr |
| Jul 18, 3:32 AM MST | Flash Flood Watch | FGZ | 40 hr |
| Jul 18, 11:16 AM MST | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 12:44 PM MST | Severe Thunderstorm Warning | FGZ | 31 min |
| Jul 18, 1:19 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 18, 2:17 PM MST | Severe Thunderstorm Warning | FGZ | 28 min |
| Jul 18, 2:21 PM MST | Areal Flood Advisory | FGZ | 114 min |
| Jul 18, 2:58 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 18, 3:05 PM MST | Severe Thunderstorm Warning | FGZ | 3 min |
| Jul 18, 3:13 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 18, 3:37 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 18, 4:24 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 18, 8:32 PM MST | Flash Flood Warning | FGZ | 118 min |
| Jul 18, 11:24 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 19, 1:28 AM MST | Areal Flood Advisory | FGZ | 3 hr |
| Jul 19, 12:05 PM MST | Areal Flood Advisory | FGZ | 3 hr |
| Jul 19, 12:05 PM MST | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 5:13 PM MST | Severe Thunderstorm Warning | FGZ | 32 min |
| Jul 19, 5:54 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 20, 3:45 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 21, 11:06 AM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 23, 9:02 AM MST | Flash Flood Watch | FGZ | 15 hr |
| Jul 23, 12:05 PM MST | Special Weather Statement | FGZ | 40 min |
| Jul 23, 12:20 PM MST | Areal Flood Advisory | FGZ | 4 hr |
| Jul 23, 12:32 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 23, 2:01 PM MST | Areal Flood Advisory | FGZ | 3 hr |
| Jul 23, 2:31 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 23, 2:50 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 23, 2:56 PM MST | Severe Thunderstorm Warning | FGZ | 49 min |
| Jul 23, 3:26 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 24, 3:08 AM MST | Flash Flood Watch | FGZ | 21 hr |
| Jul 24, 1:03 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 25, 12:42 PM MST | Flash Flood Warning | FGZ | 7 hr |
| Jul 25, 7:41 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 28, 1:49 PM MST | Flash Flood Warning | FGZ | 116 min |
| Jul 29, 12:48 PM MST | Areal Flood Advisory | FGZ | 3 hr |
| Jul 29, 1:28 PM MST | Special Weather Statement | FGZ | 32 min |
| Jul 29, 6:02 PM MST | Areal Flood Advisory | FGZ | 9 hr |
| Jul 30, 2:38 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Aug 2, 3:37 PM MST | Flash Flood Warning | FGZ | 113 min |
| Aug 3, 12:40 PM MST | Special Weather Statement | FGZ | 35 min |
| Aug 3, 1:19 PM MST | Special Weather Statement | FGZ | 26 min |
| Aug 3, 7:44 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Aug 4, 2:46 PM MST | Areal Flood Advisory | FGZ | 119 min |
| Aug 4, 4:21 PM MST | Areal Flood Advisory | FGZ | 114 min |
| Aug 4, 5:19 PM MST | Areal Flood Advisory | FGZ | 116 min |
| Aug 5, 12:38 AM MST | Areal Flood Advisory | FGZ | 3 hr |
| Aug 5, 10:40 PM MST | Flash Flood Warning | FGZ | 6 hr |
| Aug 12, 12:09 PM MST | Areal Flood Advisory | FGZ | 3 hr |
| Aug 12, 1:01 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Aug 12, 1:17 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Aug 12, 4:38 PM MST | Severe Thunderstorm Warning | FGZ | 26 min |
| Aug 13, 1:40 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Aug 13, 1:49 PM MST | Areal Flood Advisory | FGZ | 3 hr |
| Aug 13, 2:44 PM MST | Flash Flood Warning | FGZ | 6 hr |
| Aug 13, 6:18 PM MST | Severe Thunderstorm Warning | FGZ | 18 min |
| Aug 13, 6:33 PM MST | Areal Flood Advisory | FGZ | 117 min |
| Aug 20, 2:59 PM MST | Areal Flood Advisory | FGZ | 3 hr |
| Aug 23, 7:41 PM MST | Special Weather Statement | FGZ | 34 min |
| Aug 23, 10:04 PM MST | Areal Flood Advisory | FGZ | 116 min |
| Sep 7, 2:51 PM MST | Flash Flood Watch | FGZ | 44 hr |
| Sep 14, 3:38 AM MST | Flash Flood Watch | FGZ | 14 hr |
| Sep 14, 11:18 AM MST | Special Weather Statement | FGZ | 27 min |
| Sep 14, 11:53 AM MST | Severe Thunderstorm Warning | FGZ | 20 min |
| Sep 14, 12:44 PM MST | Mesoscale Discussion | SPC | 3 hr |
| Sep 14, 6:38 PM MST | Flash Flood Warning | FGZ | 8 hr |
| Sep 20, 2:17 PM MST | Wind Advisory | FGZ | 30 hr |
| Sep 23, 2:34 AM MST | Freeze Warning | FGZ | 29 hr |
| Oct 1, 2:56 PM MST | Wind Advisory | FGZ | 27 hr |
| Oct 19, 3:22 PM MST | Wind Advisory | FGZ | 28 hr |
| Nov 16, 3:31 AM MST | Wind Advisory | FGZ | 38 hr |
| Nov 26, 2:50 AM MST | Wind Advisory | FGZ | 39 hr |
| Nov 26, 1:34 PM MST | High Wind Warning | FGZ | 28 hr |
| Nov 27, 3:10 AM MST | Red Flag Warning | FGZ | 14 hr |
| Dec 20, 3:44 AM MST | Wind Advisory | FGZ | 25 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 | 8 |
| Mesoscale Discussion | 3 |
| Special Weather Statement | 9 |
| Flooding | |
| Flash Flood Warning | 28 |
| Flash Flood Watch | 7 |
| Areal Flood Advisory | 18 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 7 |
| Heat | |
| Excessive Heat Warning | 2 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Wind and dust | |
| High Wind Warning | 2 |
| Wind Advisory | 32 |
| Fire | |
| Red Flag Warning | 13 |
| Fire Weather Watch | 6 |
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.