Alert archive / Massachusetts / Bristol County

Weather alerts in Bristol County, Massachusetts, 2022

122 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Bristol County and its neighbors

Each county as a circle sized by its count in 2022. Tap one for its archive.

Alerts
122
Warnings
21
Watches
13
Advisories
46
Busiest month
January20 alerts
Busiest day
July 14, 20224 alerts

Over time

By month

Warning verification

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

Bristol County, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings550%3100%8 min
Flash flood warnings3233%2100%38 min

Each office's whole area, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Boston/Norton, MA: tornado warnings20100%0
NWS Boston/Norton, MA: severe thunderstorm warnings634627%23177%27 min
NWS Boston/Norton, MA: flash flood warnings10280%475%37 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 1, 1:05 AM ESTDense Fog AdvisoryBOX11 hr
Jan 1, 6:01 PM ESTDense Fog AdvisoryBOX10 hr
Jan 5, 2:08 PM ESTWinter Storm WatchBOX13 hr
Jan 6, 3:24 AM ESTWinter Storm WarningBOX34 hr
Jan 7, 4:12 AM ESTMesoscale DiscussionSPC5 hr
Jan 7, 7:44 AM ESTSpecial Weather StatementBOX91 min
Jan 13, 3:25 PM ESTWind Chill AdvisoryBOX45 hr
Jan 13, 3:29 PM ESTWind AdvisoryBOX32 hr
Jan 15, 3:15 PM ESTHigh Wind WatchBOX12 hr
Jan 16, 2:48 AM ESTHigh Wind WarningBOX33 hr
Jan 16, 2:48 AM ESTWind AdvisoryBOX31 hr
Jan 16, 3:02 AM ESTCoastal Flood AdvisoryBOX34 hr
Jan 17, 4:13 AM ESTSpecial Weather StatementBOX62 min
Jan 17, 5:30 AM ESTSpecial Weather StatementBOX90 min
Jan 26, 2:59 PM ESTWinter Storm WatchBOX37 hr
Jan 28, 3:35 AM ESTBlizzard WarningBOX43 hr
Jan 28, 3:35 AM ESTWinter Storm WarningBOX44 hr
Jan 29, 4:25 AM ESTMesoscale DiscussionSPC6 hr
Jan 29, 10:57 AM ESTMesoscale DiscussionSPC5 hr
Jan 29, 5:48 PM ESTMesoscale DiscussionSPC6 hr
Feb 3, 12:27 AM ESTDense Fog AdvisoryBOX12 hr
Feb 3, 2:44 AM ESTWinter Weather AdvisoryBOX46 hr
Feb 3, 12:35 PM ESTDense Fog AdvisoryBOX12 hr
Feb 4, 10:20 AM ESTMesoscale DiscussionSPC6 hr
Feb 4, 6:13 PM ESTMesoscale DiscussionSPC3 hr
Feb 12, 3:28 PM ESTWinter Weather AdvisoryBOX43 hr
Feb 15, 2:40 PM ESTHigh Wind WatchBOX36 hr
Feb 16, 2:44 PM ESTHigh Wind WarningBOX42 hr
Feb 19, 12:58 PM ESTMesoscale DiscussionSPC4 hr
Feb 22, 2:47 AM ESTWind AdvisoryBOX25 hr
Feb 22, 4:23 AM ESTDense Fog AdvisoryBOX5 hr
Feb 23, 3:00 AM ESTWinter Storm WatchBOX34 hr
Feb 24, 2:54 AM ESTWinter Storm WarningBOX36 hr
Feb 24, 1:00 PM ESTWinter Weather AdvisoryBOX26 hr
Mar 6, 5:51 AM ESTDense Fog AdvisoryBOX4 hr
Mar 6, 10:01 AM ESTDense Fog AdvisoryBOX5 hr
Mar 6, 3:47 PM ESTDense Fog AdvisoryBOX3 hr
Mar 7, 8:52 PM ESTMesoscale DiscussionSPC113 min
Mar 11, 3:01 PM ESTWind AdvisoryBOX42 hr
Mar 12, 6:51 AM ESTDense Fog AdvisoryBOX2 hr
Mar 17, 6:58 AM EDTDense Fog AdvisoryBOX3 hr
Mar 19, 5:25 AM EDTDense Fog AdvisoryBOX7 hr
Mar 31, 11:41 PM EDTSpecial Weather StatementBOX49 min
Mar 31, 11:56 PM EDTSpecial Weather StatementBOX49 min
Apr 8, 4:08 AM EDTSpecial Weather StatementBOX52 min
Apr 18, 3:26 AM EDTWind AdvisoryBOX29 hr
Apr 20, 3:23 AM EDTFrost AdvisoryBOX28 hr
Apr 30, 3:16 PM EDTFrost AdvisoryBOX16 hr
May 12, 7:59 PM EDTDense Fog AdvisoryBOX12 hr
May 13, 7:09 PM EDTDense Fog AdvisoryBOX13 hr
May 14, 8:20 PM EDTDense Fog AdvisoryBOX14 hr
May 15, 7:06 PM EDTDense Fog AdvisoryBOX15 hr
May 16, 3:36 AM EDTCoastal Flood StatementBOX25 hr
May 20, 3:16 AM EDTDense Fog AdvisoryBOX7 hr
May 20, 3:16 AM EDTHeat AdvisoryBOX65 hr
Jun 8, 7:00 AM EDTSpecial Weather StatementBOX60 min
Jun 9, 8:17 AM EDTSpecial Weather StatementBOX43 min
Jun 9, 8:44 AM EDTSpecial Weather StatementBOX61 min
Jun 13, 3:24 AM EDTSpecial Weather StatementBOX51 min
Jun 13, 4:22 AM EDTSpecial Weather StatementBOX53 min
Jun 17, 12:40 PM EDTMesoscale DiscussionSPC2 hr
Jun 17, 2:51 PM EDTSevere Thunderstorm WarningBOX39 min
Jul 2, 3:21 AM EDTSevere Thunderstorm WarningBOX54 min
Jul 2, 2:37 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 2, 4:25 PM EDTMesoscale DiscussionSPC2 hr
Jul 14, 3:16 PM EDTMesoscale DiscussionSPC2 hr
Jul 14, 4:30 PM EDTSpecial Weather StatementBOX45 min
Jul 14, 4:35 PM EDTSpecial Weather StatementBOX55 min
Jul 14, 4:50 PM EDTSevere Thunderstorm WarningBOX40 min
Jul 19, 3:36 AM EDTHeat AdvisoryBOX64 hr
Jul 22, 3:29 AM EDTHeat AdvisoryBOX4 days
Jul 24, 3:16 PM EDTHigh Surf AdvisoryBOX36 hr
Jul 25, 1:04 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 26, 4:47 AM EDTRip Current StatementBOX15 hr
Aug 2, 2:26 PM EDTHeat AdvisoryBOX7 days
Aug 5, 5:15 PM EDTSpecial Weather StatementBOX45 min
Aug 5, 6:10 PM EDTSpecial Weather StatementBOX65 min
Aug 9, 3:02 AM EDTRip Current StatementBOX17 hr
Aug 9, 4:59 PM EDTSpecial Weather StatementBOX61 min
Aug 9, 6:07 PM EDTSpecial Weather StatementBOX53 min
Aug 9, 8:14 PM EDTSpecial Weather StatementBOX61 min
Aug 9, 8:18 PM EDTSpecial Weather StatementBOX57 min
Aug 23, 3:22 PM EDTMesoscale DiscussionSPC2 hr
Aug 23, 3:33 PM EDTAreal Flood WarningBOX21 min
Aug 23, 3:54 PM EDTFlash Flood WarningBOX3 hr
Aug 26, 3:24 PM EDTSevere Thunderstorm WarningBOX66 min
Aug 26, 3:54 PM EDTMesoscale DiscussionSPC2 hr
Aug 26, 4:27 PM EDTSevere Thunderstorm WarningBOX42 min
Aug 26, 5:37 PM EDTSpecial Weather StatementBOX53 min
Sep 5, 3:08 AM EDTFlood WatchBOX34 hr
Sep 5, 1:38 PM EDTAreal Flood WarningBOX82 min
Sep 5, 2:39 PM EDTFlash Flood WarningBOX5 hr
Sep 6, 9:25 AM EDTAreal Flood WarningBOX6 hr
Sep 9, 9:26 AM EDTHigh Surf AdvisoryBOX59 hr
Sep 13, 8:47 AM EDTSpecial Weather StatementBOX88 min
Sep 13, 10:21 AM EDTFlash Flood WarningBOX114 min
Sep 21, 4:38 AM EDTHigh Surf AdvisoryBOX63 hr
Sep 22, 8:50 AM EDTSpecial Weather StatementBOX55 min
Sep 22, 9:47 AM EDTSpecial Weather StatementBOX58 min
Sep 22, 12:31 PM EDTSpecial Weather StatementBOX59 min
Sep 22, 1:35 PM EDTSpecial Weather StatementBOX55 min
Sep 26, 4:40 AM EDTHigh Surf AdvisoryBOX15 hr
Oct 8, 3:13 AM EDTFrost AdvisoryBOX29 hr
Oct 13, 2:45 PM EDTFlood WatchBOX15 hr
Oct 13, 3:37 PM EDTWind AdvisoryBOX21 hr
Oct 24, 6:26 PM EDTDense Fog AdvisoryBOX15 hr
Oct 25, 5:47 PM EDTDense Fog AdvisoryBOX16 hr
Oct 27, 3:02 PM EDTFrost AdvisoryBOX16 hr
Oct 28, 3:17 PM EDTFrost AdvisoryBOX18 hr
Oct 29, 3:52 AM EDTFreeze WatchBOX11 hr
Oct 29, 3:00 PM EDTFreeze WarningBOX18 hr
Nov 8, 3:16 AM ESTFreeze WatchBOX12 hr
Nov 8, 3:42 PM ESTFreeze WarningBOX17 hr
Nov 10, 2:28 PM ESTWind AdvisoryBOX44 hr
Nov 27, 3:33 AM ESTCoastal Flood StatementBOX21 hr
Nov 29, 2:57 AM ESTWind AdvisoryBOX60 hr
Dec 15, 3:25 AM ESTWind AdvisoryBOX42 hr
Dec 20, 2:44 PM ESTCoastal Flood WatchBOX37 hr
Dec 21, 3:25 AM ESTHigh Wind WatchBOX11 hr
Dec 21, 2:53 PM ESTHigh Wind WarningBOX58 hr
Dec 22, 3:55 AM ESTCoastal Flood WarningBOX34 hr
Dec 31, 1:36 PM ESTDense Fog AdvisoryBOX14 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 archive20212023

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.