Alert archive / Arizona / Coconino County
Weather alerts in Coconino County, Arizona, 2019
120 weather alerts in 2019, 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 2019. Tap one for its archive.
- Alerts
- 120
- Warnings
- 54
- Watches
- 11
- Advisories
- 44
- Busiest month
- February23 alerts
- Busiest day
- August 28, 20196 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.
Coconino County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 1 | 0% | |||
| Severe thunderstorm warnings | 11 | 2 | 82% | 1 | 100% | 2 min |
| Flash flood warnings | 23 | 7 | 70% | 11 | 55% | 100 min |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Flagstaff, AZ: tornado warnings | 0 | 1 | 0% | |||
| NWS Flagstaff, AZ: severe thunderstorm warnings | 55 | 5 | 91% | 11 | 55% | 10 min |
| NWS Flagstaff, AZ: flash flood warnings | 75 | 19 | 75% | 37 | 70% | 102 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 4, 2:59 PM MST | Winter Weather Advisory | FGZ | 50 hr |
| Jan 5, 1:31 PM MST | Winter Storm Warning | FGZ | 27 hr |
| Jan 12, 3:10 PM MST | Winter Weather Advisory | FGZ | 22 hr |
| Jan 13, 4:31 PM MST | Winter Weather Advisory | FGZ | 60 hr |
| Jan 15, 5:05 AM MST | Flash Flood Watch | FGZ | 17 hr |
| Jan 20, 3:44 AM MST | Wind Advisory | FGZ | 37 hr |
| Feb 3, 7:32 AM MST | Flash Flood Warning | FGZ | 3 hr |
| Feb 3, 9:40 AM MST | Flash Flood Warning | FGZ | 11 hr |
| Feb 3, 2:55 PM MST | Flash Flood Warning | FGZ | 6 hr |
| Feb 4, 1:37 PM MST | Winter Storm Warning | FGZ | 42 hr |
| Feb 4, 1:37 PM MST | Winter Weather Advisory | FGZ | 45 hr |
| Feb 4, 2:25 PM MST | Flash Flood Watch | FGZ | 22 hr |
| Feb 4, 11:34 PM MST | Wind Advisory | FGZ | 41 hr |
| Feb 6, 12:20 AM MST | Areal Flood Advisory | FGZ | 6 hr |
| Feb 8, 1:19 PM MST | Wind Advisory | FGZ | 29 hr |
| Feb 10, 5:56 PM MST | Winter Weather Advisory | FGZ | 11 hr |
| Feb 13, 2:21 PM MST | Flood Watch | FGZ | 46 hr |
| Feb 14, 4:54 PM MST | Flash Flood Warning | FGZ | 22 hr |
| Feb 14, 7:38 PM MST | Flash Flood Warning | FGZ | 14 hr |
| Feb 15, 12:29 AM MST | Flash Flood Warning | FGZ | 6 hr |
| Feb 15, 3:30 AM MST | Flash Flood Warning | FGZ | 6 hr |
| Feb 15, 3:25 PM MST | Flash Flood Warning | FGZ | 4 hr |
| Feb 15, 7:12 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Feb 16, 2:32 AM MST | Winter Storm Warning | FGZ | 68 hr |
| Feb 16, 2:32 AM MST | Winter Weather Advisory | FGZ | 68 hr |
| Feb 16, 7:44 AM MST | River Flood Warning | FGZ | 10 hr |
| Feb 16, 5:58 PM MST | Areal Flood Warning | FGZ | 12 hr |
| Feb 19, 2:50 AM MST | Winter Storm Watch | FGZ | 24 hr |
| Feb 20, 3:03 AM MST | Winter Storm Warning | FGZ | 65 hr |
| Mar 1, 2:36 PM MST | Wind Advisory | FGZ | 28 hr |
| Mar 5, 2:08 PM MST | Wind Advisory | FGZ | 29 hr |
| Mar 7, 3:17 AM MST | Wind Advisory | FGZ | 16 hr |
| Mar 7, 2:34 PM MST | Wind Advisory | FGZ | 27 hr |
| Mar 11, 3:31 AM MST | Winter Weather Advisory | FGZ | 61 hr |
| Mar 12, 1:41 PM MST | Wind Advisory | FGZ | 28 hr |
| Mar 21, 11:58 AM MST | Snow Squall Warning | FGZ | 62 min |
| Apr 8, 3:32 PM MST | Wind Advisory | FGZ | 49 hr |
| May 8, 8:32 AM MST | Special Weather Statement | FGZ | 28 min |
| May 8, 8:58 AM MST | Special Weather Statement | FGZ | 47 min |
| May 8, 12:36 PM MST | Severe Thunderstorm Warning | FGZ | 39 min |
| May 15, 2:28 PM MST | Wind Advisory | FGZ | 31 hr |
| May 18, 5:03 AM MST | Wind Advisory | FGZ | 37 hr |
| May 20, 11:22 AM MST | Severe Thunderstorm Warning | FGZ | 23 min |
| May 20, 1:34 PM MST | Wind Advisory | FGZ | 29 hr |
| May 22, 1:54 PM MST | Winter Weather Advisory | FGZ | 21 hr |
| May 25, 1:19 PM MST | Wind Advisory | FGZ | 29 hr |
| May 26, 2:33 PM MST | Wind Advisory | FGZ | 26 hr |
| May 30, 10:18 AM MST | Special Weather Statement | FGZ | 42 min |
| May 30, 11:50 AM MST | Special Weather Statement | FGZ | 25 min |
| May 30, 12:20 PM MST | Flash Flood Warning | FGZ | 3 hr |
| May 30, 12:25 PM MST | Special Weather Statement | FGZ | 50 min |
| Jun 3, 4:42 PM MST | Special Weather Statement | FGZ | 33 min |
| Jun 19, 2:41 PM MST | Fire Weather Watch | FGZ | 24 hr |
| Jun 20, 2:11 PM MST | Wind Advisory | FGZ | 29 hr |
| Jun 20, 2:21 PM MST | Red Flag Warning | FGZ | 29 hr |
| Jun 26, 3:40 AM MST | Red Flag Warning | FGZ | 14 hr |
| Jun 26, 2:25 PM MST | Red Flag Warning | FGZ | 28 hr |
| Jun 27, 1:54 PM MST | Red Flag Warning | FGZ | 28 hr |
| Jul 14, 3:22 PM MST | Excessive Heat Warning | FGZ | 53 hr |
| Jul 22, 4:40 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 23, 3:22 PM MST | Severe Thunderstorm Warning | FGZ | 23 min |
| Jul 23, 4:04 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 25, 12:24 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Jul 26, 11:36 AM MST | Special Weather Statement | FGZ | 39 min |
| Jul 26, 5:14 PM MST | Special Weather Statement | FGZ | 31 min |
| Jul 30, 12:53 PM MST | Special Weather Statement | FGZ | 22 min |
| Aug 2, 2:08 PM MST | Severe Thunderstorm Warning | FGZ | 25 min |
| Aug 2, 3:17 PM MST | Flash Flood Warning | FGZ | 118 min |
| Aug 2, 4:07 PM MST | Severe Thunderstorm Warning | FGZ | 23 min |
| Aug 2, 4:50 PM MST | Severe Thunderstorm Warning | FGZ | 40 min |
| Aug 2, 7:09 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Aug 4, 1:42 PM MST | Severe Thunderstorm Warning | FGZ | 48 min |
| Aug 4, 2:46 PM MST | Special Weather Statement | FGZ | 44 min |
| Aug 19, 2:34 PM MST | Excessive Heat Warning | FGZ | 53 hr |
| Aug 19, 2:34 PM MST | Heat Advisory | FGZ | 53 hr |
| Aug 28, 1:56 PM MST | Severe Thunderstorm Warning | FGZ | 34 min |
| Aug 28, 2:14 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Aug 28, 2:33 PM MST | Severe Thunderstorm Warning | FGZ | 42 min |
| Aug 28, 2:45 PM MST | Areal Flood Advisory | FGZ | 3 hr |
| Aug 28, 3:15 PM MST | Severe Thunderstorm Warning | FGZ | 45 min |
| Aug 28, 3:40 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Aug 28, 6:47 PM MST | Flash Flood Warning | FGZ | 88 min |
| Aug 29, 1:18 PM MST | Areal Flood Advisory | FGZ | 117 min |
| Aug 29, 2:31 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Aug 29, 2:40 PM MST | Areal Flood Advisory | FGZ | 2 hr |
| Aug 29, 3:18 PM MST | Flash Flood Warning | FGZ | 3 hr |
| Aug 29, 3:58 PM MST | Areal Flood Advisory | FGZ | 3 hr |
| Sep 18, 2:15 PM MST | Wind Advisory | FGZ | 29 hr |
| Sep 18, 2:26 PM MST | Red Flag Warning | FGZ | 30 hr |
| Sep 23, 3:19 AM MST | Flash Flood Watch | FGZ | 24 hr |
| Sep 24, 2:43 PM MST | Flash Flood Watch | FGZ | 48 hr |
| Sep 28, 3:11 AM MST | Wind Advisory | FGZ | 41 hr |
| Oct 8, 2:29 AM MST | Wind Advisory | FGZ | 41 hr |
| Oct 8, 2:49 AM MST | Red Flag Warning | FGZ | 41 hr |
| Oct 9, 1:36 PM MST | Freeze Watch | FGZ | 13 hr |
| Oct 10, 2:50 AM MST | Freeze Warning | FGZ | 29 hr |
| Oct 24, 3:45 AM MST | Red Flag Warning | FGZ | 14 hr |
| Oct 26, 1:23 PM MST | Wind Advisory | FGZ | 29 hr |
| Oct 27, 3:32 AM MST | Red Flag Warning | FGZ | 14 hr |
| Oct 29, 3:35 AM MST | Red Flag Warning | FGZ | 14 hr |
| Nov 6, 2:21 PM MST | Severe Thunderstorm Warning | FGZ | 24 min |
| Nov 18, 2:43 PM MST | Flash Flood Watch | FGZ | 34 hr |
| Nov 19, 3:48 AM MST | Winter Weather Advisory | FGZ | 65 hr |
| Nov 20, 12:25 AM MST | Flash Flood Watch | FGZ | 36 hr |
| Nov 20, 2:26 PM MST | Areal Flood Advisory | FGZ | 3 hr |
| Nov 24, 2:31 PM MST | Wind Advisory | FGZ | 38 hr |
| Nov 25, 3:49 PM MST | Winter Storm Watch | FGZ | 46 hr |
| Nov 26, 9:59 AM MST | Wind Advisory | FGZ | 33 hr |
| Nov 27, 1:43 PM MST | Winter Storm Warning | FGZ | 58 hr |
| Nov 28, 1:32 PM MST | Wind Advisory | FGZ | 27 hr |
| Nov 28, 2:15 PM MST | Winter Weather Advisory | FGZ | 34 hr |
| Nov 29, 1:06 AM MST | Mesoscale Discussion | SPC | 6 hr |
| Dec 4, 2:57 PM MST | Areal Flood Advisory | FGZ | 12 hr |
| Dec 4, 10:54 PM MST | Flash Flood Warning | FGZ | 6 hr |
| Dec 5, 3:00 AM MST | Flash Flood Warning | FGZ | 6 hr |
| Dec 8, 3:44 PM MST | Flash Flood Warning | FGZ | 6 hr |
| Dec 13, 1:51 PM MST | Wind Advisory | FGZ | 53 hr |
| Dec 13, 1:53 PM MST | Winter Weather Advisory | FGZ | 51 hr |
| Dec 23, 3:48 AM MST | Winter Weather Advisory | FGZ | 63 hr |
| Dec 26, 2:31 AM MST | Winter Weather Advisory | FGZ | 66 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.