Alert archive / Maine / Knox County

Weather alerts in Knox County, Maine, 2013

98 weather alerts in 2013, 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 2013. Tap one for its archive.

Alerts
98
Warnings
20
Watches
24
Advisories
35
Busiest month
February17 alerts
Busiest day
September 12, 20138 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, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings8713%580%32 min
Flash flood warnings110%0

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Gray, ME: tornado warnings2150%1100%23 min
NWS Gray, ME: severe thunderstorm warnings14411520%27189%21 min
NWS Gray, ME: flash flood warnings352334%3889%69 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 10, 10:12 AM ESTWind AdvisoryGYX7 hr
Jan 12, 4:57 PM ESTDense Fog AdvisoryGYX39 hr
Jan 15, 3:18 PM ESTWinter Weather AdvisoryGYX29 hr
Jan 20, 4:02 AM ESTWind AdvisoryGYX15 hr
Jan 22, 3:40 AM ESTWind Chill AdvisoryGYX3 days
Jan 29, 3:44 AM ESTWinter Weather AdvisoryGYX30 hr
Jan 29, 8:11 PM ESTHigh Wind WatchGYX19 hr
Jan 30, 11:38 AM ESTDense Fog AdvisoryGYX15 hr
Jan 30, 3:09 PM ESTHigh Wind WarningGYX24 hr
Jan 31, 3:06 PM ESTWind AdvisoryGYX6 hr
Feb 6, 3:40 AM ESTWinter Storm WatchGYX35 hr
Feb 7, 4:19 AM ESTCoastal Flood WatchGYX11 hr
Feb 7, 2:56 PM ESTBlizzard WarningGYX48 hr
Feb 7, 3:07 PM ESTCoastal Flood WarningGYX46 hr
Feb 8, 8:37 PM ESTMesoscale DiscussionSPC6 hr
Feb 8, 9:32 PM ESTCoastal Flood AdvisoryGYX88 min
Feb 9, 4:07 AM ESTMesoscale DiscussionSPC4 hr
Feb 9, 8:54 AM ESTMesoscale DiscussionSPC4 hr
Feb 11, 5:36 PM ESTDense Fog AdvisoryGYX9 hr
Feb 15, 3:22 PM ESTWinter Storm WatchGYX24 hr
Feb 16, 3:31 PM ESTWinter Weather AdvisoryGYX31 hr
Feb 16, 3:36 PM ESTWind AdvisoryGYX31 hr
Feb 18, 3:43 AM ESTWind AdvisoryGYX13 hr
Feb 22, 3:32 AM ESTWinter Storm WatchGYX24 hr
Feb 23, 3:34 AM ESTWinter Weather AdvisoryGYX44 hr
Feb 25, 3:36 PM ESTWinter Storm WatchGYX24 hr
Feb 26, 3:33 PM ESTWinter Weather AdvisoryGYX36 hr
Mar 7, 10:10 AM ESTCoastal Flood AdvisoryGYX24 hr
Mar 9, 3:14 AM ESTCoastal Flood AdvisoryGYX8 hr
Mar 10, 4:03 AM EDTCoastal Flood StatementGYX8 hr
Mar 17, 3:22 PM EDTWinter Storm WatchGYX12 hr
Mar 18, 3:41 AM EDTWinter Storm WarningGYX49 hr
Mar 19, 6:44 PM EDTMesoscale DiscussionSPC4 hr
May 13, 2:33 PM EDTFrost AdvisoryGYX12 hr
May 24, 2:57 PM EDTCoastal Flood AdvisoryGYX9 hr
May 25, 3:45 PM EDTCoastal Flood AdvisoryGYX7 hr
May 25, 10:20 PM EDTCoastal Flood WarningGYX4 hr
May 26, 3:32 PM EDTCoastal Flood AdvisoryGYX11 hr
Jun 6, 2:43 PM EDTFlood WatchGYX43 hr
Jun 10, 3:46 AM EDTFlood WatchGYX35 hr
Jun 17, 3:26 PM EDTSpecial Weather StatementGYX49 min
Jun 25, 3:11 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 25, 4:52 PM EDTMesoscale DiscussionSPC83 min
Jun 25, 7:29 PM EDTSpecial Weather StatementGYX31 min
Jun 27, 3:22 AM EDTFlood WatchGYX36 hr
Jul 1, 3:50 AM EDTFlash Flood WatchGYX24 hr
Jul 10, 7:23 PM EDTDense Fog AdvisoryGYX15 hr
Jul 17, 10:36 PM EDTSpecial Weather StatementGYX24 min
Jul 19, 4:10 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 19, 9:26 PM EDTSevere Thunderstorm WarningGYX49 min
Jul 20, 1:36 PM EDTMesoscale DiscussionSPC54 min
Jul 20, 2:08 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 20, 4:36 PM EDTSevere Thunderstorm WarningGYX54 min
Jul 20, 5:21 PM EDTSevere Thunderstorm WarningGYX24 min
Jul 20, 6:43 PM EDTMesoscale DiscussionSPC62 min
Jul 23, 3:15 AM EDTFlash Flood WatchGYX12 hr
Jul 24, 2:21 PM EDTSevere Thunderstorm WarningGYX39 min
Aug 14, 12:29 PM EDTSpecial Weather StatementGYX31 min
Aug 28, 6:35 PM EDTSevere Thunderstorm WarningGYX55 min
Aug 28, 6:46 PM EDTFlash Flood WarningGYX3 hr
Sep 1, 3:11 PM EDTFlash Flood WatchGYX35 hr
Sep 2, 5:16 AM EDTAreal Flood AdvisoryGYX4 hr
Sep 2, 7:07 AM EDTAreal Flood WarningGYX6 hr
Sep 11, 2:33 PM EDTSevere Thunderstorm WatchSPC9 hr
Sep 11, 8:36 PM EDTSevere Thunderstorm WarningGYX54 min
Sep 12, 12:24 PM EDTMesoscale DiscussionSPC66 min
Sep 12, 12:51 PM EDTSevere Thunderstorm WarningGYX54 min
Sep 12, 1:03 PM EDTSevere Thunderstorm WatchSPC9 hr
Sep 12, 1:26 PM EDTSpecial Weather StatementGYX64 min
Sep 12, 1:35 PM EDTSevere Thunderstorm WarningGYX55 min
Sep 12, 3:07 PM EDTFlash Flood WatchGYX12 hr
Sep 12, 3:26 PM EDTMesoscale DiscussionSPC64 min
Sep 21, 12:41 AM EDTDense Fog AdvisoryGYX7 hr
Sep 29, 5:17 AM EDTDense Fog AdvisoryGYX5 hr
Oct 7, 7:09 PM EDTMesoscale DiscussionSPC2 hr
Oct 23, 2:59 PM EDTFrost AdvisoryGYX10 hr
Oct 25, 2:21 PM EDTFreeze WarningGYX18 hr
Oct 31, 3:15 PM EDTWind AdvisoryGYX28 hr
Nov 18, 5:11 AM ESTMesoscale DiscussionSPC3 hr
Nov 23, 3:38 PM ESTWind AdvisoryGYX28 hr
Nov 26, 2:37 PM ESTFlood WatchGYX26 hr
Nov 26, 2:46 PM ESTWind AdvisoryGYX24 hr
Nov 26, 5:14 PM ESTCoastal Flood StatementGYX15 hr
Nov 27, 8:00 AM ESTCoastal Flood StatementGYX11 hr
Nov 27, 2:14 PM ESTAreal Flood AdvisoryGYX4 hr
Dec 5, 9:01 PM ESTDense Fog AdvisoryGYX10 hr
Dec 8, 3:17 PM ESTWinter Weather AdvisoryGYX33 hr
Dec 13, 3:07 AM ESTWinter Storm WatchGYX25 hr
Dec 13, 3:28 PM ESTWinter Storm WarningGYX46 hr
Dec 16, 3:04 PM ESTWinter Storm WatchGYX12 hr
Dec 17, 3:31 AM ESTWinter Storm WarningGYX24 hr
Dec 20, 3:57 AM ESTWinter Storm WatchGYX24 hr
Dec 21, 3:50 AM ESTIce Storm WarningGYX63 hr
Dec 21, 3:50 AM ESTFreezing Rain AdvisoryGYX63 hr
Dec 25, 3:20 PM ESTWinter Weather AdvisoryGYX31 hr
Dec 27, 3:06 PM ESTWinter Storm WatchGYX24 hr
Dec 28, 3:12 PM ESTWinter Storm WarningGYX36 hr
Dec 28, 3:12 PM ESTWinter Weather AdvisoryGYX36 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 archive20122014

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.