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

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings010%
Severe thunderstorm warnings11282%1100%2 min
Flash flood warnings23770%1155%100 min

Each office's whole area, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Flagstaff, AZ: tornado warnings010%
NWS Flagstaff, AZ: severe thunderstorm warnings55591%1155%10 min
NWS Flagstaff, AZ: flash flood warnings751975%3770%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.

IssuedProductOfficeLasted
Jan 4, 2:59 PM MSTWinter Weather AdvisoryFGZ50 hr
Jan 5, 1:31 PM MSTWinter Storm WarningFGZ27 hr
Jan 12, 3:10 PM MSTWinter Weather AdvisoryFGZ22 hr
Jan 13, 4:31 PM MSTWinter Weather AdvisoryFGZ60 hr
Jan 15, 5:05 AM MSTFlash Flood WatchFGZ17 hr
Jan 20, 3:44 AM MSTWind AdvisoryFGZ37 hr
Feb 3, 7:32 AM MSTFlash Flood WarningFGZ3 hr
Feb 3, 9:40 AM MSTFlash Flood WarningFGZ11 hr
Feb 3, 2:55 PM MSTFlash Flood WarningFGZ6 hr
Feb 4, 1:37 PM MSTWinter Storm WarningFGZ42 hr
Feb 4, 1:37 PM MSTWinter Weather AdvisoryFGZ45 hr
Feb 4, 2:25 PM MSTFlash Flood WatchFGZ22 hr
Feb 4, 11:34 PM MSTWind AdvisoryFGZ41 hr
Feb 6, 12:20 AM MSTAreal Flood AdvisoryFGZ6 hr
Feb 8, 1:19 PM MSTWind AdvisoryFGZ29 hr
Feb 10, 5:56 PM MSTWinter Weather AdvisoryFGZ11 hr
Feb 13, 2:21 PM MSTFlood WatchFGZ46 hr
Feb 14, 4:54 PM MSTFlash Flood WarningFGZ22 hr
Feb 14, 7:38 PM MSTFlash Flood WarningFGZ14 hr
Feb 15, 12:29 AM MSTFlash Flood WarningFGZ6 hr
Feb 15, 3:30 AM MSTFlash Flood WarningFGZ6 hr
Feb 15, 3:25 PM MSTFlash Flood WarningFGZ4 hr
Feb 15, 7:12 PM MSTFlash Flood WarningFGZ3 hr
Feb 16, 2:32 AM MSTWinter Storm WarningFGZ68 hr
Feb 16, 2:32 AM MSTWinter Weather AdvisoryFGZ68 hr
Feb 16, 7:44 AM MSTRiver Flood WarningFGZ10 hr
Feb 16, 5:58 PM MSTAreal Flood WarningFGZ12 hr
Feb 19, 2:50 AM MSTWinter Storm WatchFGZ24 hr
Feb 20, 3:03 AM MSTWinter Storm WarningFGZ65 hr
Mar 1, 2:36 PM MSTWind AdvisoryFGZ28 hr
Mar 5, 2:08 PM MSTWind AdvisoryFGZ29 hr
Mar 7, 3:17 AM MSTWind AdvisoryFGZ16 hr
Mar 7, 2:34 PM MSTWind AdvisoryFGZ27 hr
Mar 11, 3:31 AM MSTWinter Weather AdvisoryFGZ61 hr
Mar 12, 1:41 PM MSTWind AdvisoryFGZ28 hr
Mar 21, 11:58 AM MSTSnow Squall WarningFGZ62 min
Apr 8, 3:32 PM MSTWind AdvisoryFGZ49 hr
May 8, 8:32 AM MSTSpecial Weather StatementFGZ28 min
May 8, 8:58 AM MSTSpecial Weather StatementFGZ47 min
May 8, 12:36 PM MSTSevere Thunderstorm WarningFGZ39 min
May 15, 2:28 PM MSTWind AdvisoryFGZ31 hr
May 18, 5:03 AM MSTWind AdvisoryFGZ37 hr
May 20, 11:22 AM MSTSevere Thunderstorm WarningFGZ23 min
May 20, 1:34 PM MSTWind AdvisoryFGZ29 hr
May 22, 1:54 PM MSTWinter Weather AdvisoryFGZ21 hr
May 25, 1:19 PM MSTWind AdvisoryFGZ29 hr
May 26, 2:33 PM MSTWind AdvisoryFGZ26 hr
May 30, 10:18 AM MSTSpecial Weather StatementFGZ42 min
May 30, 11:50 AM MSTSpecial Weather StatementFGZ25 min
May 30, 12:20 PM MSTFlash Flood WarningFGZ3 hr
May 30, 12:25 PM MSTSpecial Weather StatementFGZ50 min
Jun 3, 4:42 PM MSTSpecial Weather StatementFGZ33 min
Jun 19, 2:41 PM MSTFire Weather WatchFGZ24 hr
Jun 20, 2:11 PM MSTWind AdvisoryFGZ29 hr
Jun 20, 2:21 PM MSTRed Flag WarningFGZ29 hr
Jun 26, 3:40 AM MSTRed Flag WarningFGZ14 hr
Jun 26, 2:25 PM MSTRed Flag WarningFGZ28 hr
Jun 27, 1:54 PM MSTRed Flag WarningFGZ28 hr
Jul 14, 3:22 PM MSTExcessive Heat WarningFGZ53 hr
Jul 22, 4:40 PM MSTFlash Flood WarningFGZ3 hr
Jul 23, 3:22 PM MSTSevere Thunderstorm WarningFGZ23 min
Jul 23, 4:04 PM MSTFlash Flood WarningFGZ3 hr
Jul 25, 12:24 PM MSTFlash Flood WarningFGZ3 hr
Jul 26, 11:36 AM MSTSpecial Weather StatementFGZ39 min
Jul 26, 5:14 PM MSTSpecial Weather StatementFGZ31 min
Jul 30, 12:53 PM MSTSpecial Weather StatementFGZ22 min
Aug 2, 2:08 PM MSTSevere Thunderstorm WarningFGZ25 min
Aug 2, 3:17 PM MSTFlash Flood WarningFGZ118 min
Aug 2, 4:07 PM MSTSevere Thunderstorm WarningFGZ23 min
Aug 2, 4:50 PM MSTSevere Thunderstorm WarningFGZ40 min
Aug 2, 7:09 PM MSTFlash Flood WarningFGZ3 hr
Aug 4, 1:42 PM MSTSevere Thunderstorm WarningFGZ48 min
Aug 4, 2:46 PM MSTSpecial Weather StatementFGZ44 min
Aug 19, 2:34 PM MSTExcessive Heat WarningFGZ53 hr
Aug 19, 2:34 PM MSTHeat AdvisoryFGZ53 hr
Aug 28, 1:56 PM MSTSevere Thunderstorm WarningFGZ34 min
Aug 28, 2:14 PM MSTFlash Flood WarningFGZ3 hr
Aug 28, 2:33 PM MSTSevere Thunderstorm WarningFGZ42 min
Aug 28, 2:45 PM MSTAreal Flood AdvisoryFGZ3 hr
Aug 28, 3:15 PM MSTSevere Thunderstorm WarningFGZ45 min
Aug 28, 3:40 PM MSTFlash Flood WarningFGZ3 hr
Aug 28, 6:47 PM MSTFlash Flood WarningFGZ88 min
Aug 29, 1:18 PM MSTAreal Flood AdvisoryFGZ117 min
Aug 29, 2:31 PM MSTFlash Flood WarningFGZ3 hr
Aug 29, 2:40 PM MSTAreal Flood AdvisoryFGZ2 hr
Aug 29, 3:18 PM MSTFlash Flood WarningFGZ3 hr
Aug 29, 3:58 PM MSTAreal Flood AdvisoryFGZ3 hr
Sep 18, 2:15 PM MSTWind AdvisoryFGZ29 hr
Sep 18, 2:26 PM MSTRed Flag WarningFGZ30 hr
Sep 23, 3:19 AM MSTFlash Flood WatchFGZ24 hr
Sep 24, 2:43 PM MSTFlash Flood WatchFGZ48 hr
Sep 28, 3:11 AM MSTWind AdvisoryFGZ41 hr
Oct 8, 2:29 AM MSTWind AdvisoryFGZ41 hr
Oct 8, 2:49 AM MSTRed Flag WarningFGZ41 hr
Oct 9, 1:36 PM MSTFreeze WatchFGZ13 hr
Oct 10, 2:50 AM MSTFreeze WarningFGZ29 hr
Oct 24, 3:45 AM MSTRed Flag WarningFGZ14 hr
Oct 26, 1:23 PM MSTWind AdvisoryFGZ29 hr
Oct 27, 3:32 AM MSTRed Flag WarningFGZ14 hr
Oct 29, 3:35 AM MSTRed Flag WarningFGZ14 hr
Nov 6, 2:21 PM MSTSevere Thunderstorm WarningFGZ24 min
Nov 18, 2:43 PM MSTFlash Flood WatchFGZ34 hr
Nov 19, 3:48 AM MSTWinter Weather AdvisoryFGZ65 hr
Nov 20, 12:25 AM MSTFlash Flood WatchFGZ36 hr
Nov 20, 2:26 PM MSTAreal Flood AdvisoryFGZ3 hr
Nov 24, 2:31 PM MSTWind AdvisoryFGZ38 hr
Nov 25, 3:49 PM MSTWinter Storm WatchFGZ46 hr
Nov 26, 9:59 AM MSTWind AdvisoryFGZ33 hr
Nov 27, 1:43 PM MSTWinter Storm WarningFGZ58 hr
Nov 28, 1:32 PM MSTWind AdvisoryFGZ27 hr
Nov 28, 2:15 PM MSTWinter Weather AdvisoryFGZ34 hr
Nov 29, 1:06 AM MSTMesoscale DiscussionSPC6 hr
Dec 4, 2:57 PM MSTAreal Flood AdvisoryFGZ12 hr
Dec 4, 10:54 PM MSTFlash Flood WarningFGZ6 hr
Dec 5, 3:00 AM MSTFlash Flood WarningFGZ6 hr
Dec 8, 3:44 PM MSTFlash Flood WarningFGZ6 hr
Dec 13, 1:51 PM MSTWind AdvisoryFGZ53 hr
Dec 13, 1:53 PM MSTWinter Weather AdvisoryFGZ51 hr
Dec 23, 3:48 AM MSTWinter Weather AdvisoryFGZ63 hr
Dec 26, 2:31 AM MSTWinter Weather AdvisoryFGZ66 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.