Alert archive / Maine / Knox County

Weather alerts in Knox County, Maine, 2015

100 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Knox County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts
100
Warnings
15
Watches
18
Advisories
46
Busiest month
January23 alerts
Busiest day
January 25, 20154 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Knox County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings5340%0
Flash flood warnings00

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Gray, ME: tornado warnings30100%10%
NWS Gray, ME: severe thunderstorm warnings16313219%25589%22 min
NWS Gray, ME: flash flood warnings14843%1974%43 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 2, 3:44 AM ESTWinter Storm WatchGYX24 hr
Jan 3, 3:35 AM ESTWinter Weather AdvisoryGYX31 hr
Jan 4, 3:08 PM ESTWind Chill AdvisoryGYX42 hr
Jan 4, 4:08 PM ESTDense Fog AdvisoryGYX6 hr
Jan 5, 3:30 AM ESTWind AdvisoryGYX14 hr
Jan 6, 3:40 PM ESTWind Chill AdvisoryGYX42 hr
Jan 16, 1:30 PM ESTSpecial Weather StatementGYX45 min
Jan 16, 2:13 PM ESTSpecial Weather StatementGYX32 min
Jan 22, 10:35 AM ESTCoastal Flood StatementGYX2 hr
Jan 23, 3:45 AM ESTWinter Storm WatchGYX12 hr
Jan 23, 3:17 PM ESTWinter Storm WarningGYX31 hr
Jan 24, 11:53 AM ESTMesoscale DiscussionSPC6 hr
Jan 25, 3:59 AM ESTWinter Storm WatchGYX12 hr
Jan 25, 3:46 PM ESTBlizzard WarningGYX54 hr
Jan 25, 3:46 PM ESTWinter Storm WarningGYX60 hr
Jan 25, 3:59 PM ESTCoastal Flood WatchGYX21 hr
Jan 26, 1:00 PM ESTCoastal Flood AdvisoryGYX29 hr
Jan 27, 4:28 AM ESTMesoscale DiscussionSPC5 hr
Jan 27, 10:24 AM ESTMesoscale DiscussionSPC5 hr
Jan 28, 3:04 PM ESTWinter Storm WatchGYX13 hr
Jan 29, 3:52 AM ESTWinter Storm WarningGYX54 hr
Jan 30, 9:58 PM ESTMesoscale DiscussionSPC6 hr
Jan 31, 3:06 PM ESTWinter Storm WatchGYX21 hr
Feb 1, 3:32 AM ESTWinter Storm WarningGYX45 hr
Feb 2, 5:09 AM ESTMesoscale DiscussionSPC6 hr
Feb 2, 2:14 PM ESTMesoscale DiscussionSPC5 hr
Feb 4, 3:16 PM ESTWinter Weather AdvisoryGYX20 hr
Feb 5, 3:51 PM ESTWind Chill AdvisoryGYX17 hr
Feb 6, 3:34 PM ESTWinter Storm WatchGYX36 hr
Feb 8, 3:42 AM ESTWinter Weather AdvisoryGYX44 hr
Feb 12, 3:57 PM ESTBlizzard WatchGYX24 hr
Feb 13, 3:36 PM ESTBlizzard WarningGYX47 hr
Feb 14, 10:33 PM ESTWinter Weather AdvisoryGYX20 hr
Feb 15, 9:05 AM ESTWind Chill AdvisoryGYX27 hr
Feb 17, 3:08 PM ESTWinter Storm WatchGYX25 hr
Feb 18, 4:24 PM ESTWinter Storm WarningGYX23 hr
Feb 18, 10:59 PM ESTMesoscale DiscussionSPC5 hr
Feb 19, 10:06 AM ESTCoastal Flood StatementGYX114 min
Feb 20, 4:03 PM ESTWinter Storm WatchGYX11 hr
Feb 21, 3:03 AM ESTWinter Weather AdvisoryGYX27 hr
Feb 22, 3:23 PM ESTWind Chill AdvisoryGYX39 hr
Feb 24, 3:20 PM ESTWinter Weather AdvisoryGYX17 hr
Feb 25, 8:10 AM ESTWinter Storm WarningGYX4 hr
Mar 3, 3:20 AM ESTWinter Weather AdvisoryGYX24 hr
Mar 13, 3:20 PM EDTWinter Storm WatchGYX24 hr
Mar 13, 3:20 PM EDTWinter Weather AdvisoryGYX37 hr
Mar 17, 3:23 PM EDTWind AdvisoryGYX26 hr
Mar 21, 3:26 PM EDTWind AdvisoryGYX29 hr
Mar 26, 6:53 PM EDTDense Fog AdvisoryGYX3 hr
Apr 10, 7:27 PM EDTDense Fog AdvisoryGYX5 hr
Apr 18, 3:06 PM EDTCoastal Flood WatchGYX36 hr
Apr 19, 3:19 AM EDTFlood WatchGYX62 hr
Apr 20, 2:58 AM EDTCoastal Flood AdvisoryGYX24 hr
May 20, 2:25 PM EDTFrost AdvisoryGYX16 hr
May 28, 11:54 AM EDTSevere Thunderstorm WatchSPC7 hr
May 29, 9:17 PM EDTDense Fog AdvisoryGYX12 hr
Jun 9, 8:58 PM EDTDense Fog AdvisoryGYX6 hr
Jun 27, 3:13 PM EDTHigh Surf AdvisoryGYX29 hr
Jun 27, 3:20 PM EDTWind AdvisoryGYX24 hr
Jul 15, 5:21 AM EDTDense Fog AdvisoryGYX3 hr
Jul 19, 3:33 AM EDTSpecial Weather StatementGYX42 min
Jul 24, 4:11 PM EDTSpecial Weather StatementGYX34 min
Jul 24, 4:19 PM EDTSevere Thunderstorm WarningGYX26 min
Jul 27, 12:36 AM EDTDense Fog AdvisoryGYX7 hr
Jul 28, 1:40 AM EDTSpecial Weather StatementGYX50 min
Jul 28, 4:46 PM EDTSpecial Weather StatementGYX44 min
Jul 28, 6:57 PM EDTSevere Thunderstorm WarningGYX31 min
Aug 1, 3:51 PM EDTSevere Thunderstorm WarningGYX54 min
Aug 1, 4:38 PM EDTSevere Thunderstorm WarningGYX26 min
Aug 4, 11:15 AM EDTMesoscale DiscussionSPC3 hr
Aug 4, 12:18 PM EDTSevere Thunderstorm WatchSPC8 hr
Aug 4, 2:21 PM EDTMesoscale DiscussionSPC84 min
Aug 4, 4:14 PM EDTMesoscale DiscussionSPC91 min
Aug 5, 4:32 PM EDTSpecial Weather StatementGYX28 min
Aug 12, 6:49 PM EDTAreal Flood AdvisoryGYX116 min
Aug 12, 9:25 PM EDTSevere Thunderstorm WarningGYX50 min
Aug 15, 5:09 PM EDTSpecial Weather StatementGYX21 min
Aug 20, 7:53 PM EDTDense Fog AdvisoryGYX13 hr
Aug 21, 9:10 PM EDTAreal Flood AdvisoryGYX110 min
Sep 29, 3:29 AM EDTFlood WatchGYX36 hr
Sep 30, 12:49 PM EDTCoastal Flood AdvisoryGYX2 hr
Sep 30, 3:41 PM EDTAreal Flood WarningGYX3 hr
Oct 4, 3:13 PM EDTFrost AdvisoryGYX17 hr
Oct 5, 3:21 AM EDTHigh Surf AdvisoryGYX39 hr
Oct 17, 2:55 PM EDTFreeze WarningGYX18 hr
Oct 27, 3:49 PM EDTWind AdvisoryGYX42 hr
Oct 28, 3:44 AM EDTCoastal Flood WatchGYX24 hr
Oct 28, 7:52 PM EDTCoastal Flood AdvisoryGYX7 hr
Oct 29, 4:07 AM EDTCoastal Flood AdvisoryGYX11 hr
Nov 22, 2:56 PM ESTWinter Weather AdvisoryGYX16 hr
Dec 10, 7:41 PM ESTDense Fog AdvisoryGYX15 hr
Dec 11, 11:03 AM ESTDense Fog AdvisoryGYX117 min
Dec 14, 6:04 PM ESTDense Fog AdvisoryGYX4 hr
Dec 16, 3:19 PM ESTFreezing Rain AdvisoryGYX21 hr
Dec 22, 9:20 PM ESTDense Fog AdvisoryGYX24 hr
Dec 25, 3:01 PM ESTFreezing Rain AdvisoryGYX43 hr
Dec 27, 3:37 PM ESTWinter Storm WatchGYX24 hr
Dec 27, 3:37 PM ESTWinter Weather AdvisoryGYX56 hr
Dec 29, 4:47 AM ESTMesoscale DiscussionSPC6 hr
Dec 30, 3:39 AM ESTFreezing Rain AdvisoryGYX23 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 archive20142016

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.