Alert archive / Massachusetts / Suffolk County

Weather alerts in Suffolk County, Massachusetts, 2024

128 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Suffolk County and its neighbors

Each county as a circle sized by its count in 2024. Tap one for its archive.

Alerts
128
Warnings
34
Watches
26
Advisories
31
Busiest month
January21 alerts
Busiest day
June 27, 20247 alerts

Over time

By month

Warning verification

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

Suffolk County, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings9633%683%10 min
Flash flood warnings20100%0

Each office's whole area, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Boston/Norton, MA: tornado warnings4175%250%0 min
NWS Boston/Norton, MA: severe thunderstorm warnings1098126%29091%26 min
NWS Boston/Norton, MA: flash flood warnings21576%1385%59 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 4, 3:27 PM ESTWinter Storm WatchBOX35 hr
Jan 5, 2:24 PM ESTWinter Storm WarningBOX56 hr
Jan 6, 2:53 AM ESTWinter Weather AdvisoryBOX43 hr
Jan 6, 8:35 PM ESTMesoscale DiscussionSPC6 hr
Jan 7, 12:16 PM ESTMesoscale DiscussionSPC3 hr
Jan 8, 2:53 AM ESTHigh Wind WatchBOX25 hr
Jan 8, 3:50 AM ESTFlood WatchBOX5 days
Jan 8, 3:12 PM ESTWind AdvisoryBOX40 hr
Jan 8, 3:47 PM ESTCoastal Flood WatchBOX20 hr
Jan 9, 11:20 AM ESTCoastal Flood AdvisoryBOX25 hr
Jan 10, 8:32 AM ESTRiver Flood WarningBOX37 hr
Jan 11, 3:23 AM ESTCoastal Flood WatchBOX24 hr
Jan 11, 3:26 AM ESTHigh Wind WatchBOX24 hr
Jan 12, 3:25 AM ESTCoastal Flood WarningBOX37 hr
Jan 12, 3:25 AM ESTCoastal Flood AdvisoryBOX10 hr
Jan 12, 3:31 AM ESTWind AdvisoryBOX32 hr
Jan 13, 8:50 AM ESTRiver Flood WarningBOX34 hr
Jan 14, 11:49 AM ESTMesoscale DiscussionSPC4 hr
Jan 14, 4:30 PM ESTSnow Squall WarningBOX45 min
Jan 15, 3:40 PM ESTWinter Weather AdvisoryBOX27 hr
Jan 16, 8:49 AM ESTMesoscale DiscussionSPC4 hr
Feb 9, 3:17 PM ESTCoastal Flood StatementBOX22 hr
Feb 10, 1:36 PM ESTCoastal Flood StatementBOX24 hr
Feb 10, 3:25 PM ESTWinter Storm WatchBOX48 hr
Feb 11, 3:56 AM ESTCoastal Flood WatchBOX33 hr
Feb 11, 2:41 PM ESTWinter Storm WarningBOX50 hr
Feb 12, 3:41 AM ESTCoastal Flood WarningBOX37 hr
Feb 12, 3:20 PM ESTWinter Weather AdvisoryBOX23 hr
Feb 13, 2:40 PM ESTCoastal Flood AdvisoryBOX13 hr
Feb 17, 1:51 PM ESTSnow Squall WarningBOX24 min
Feb 17, 2:28 PM ESTSnow Squall WarningBOX32 min
Feb 17, 2:59 PM ESTSnow Squall WarningBOX31 min
Feb 27, 4:18 AM ESTWind AdvisoryBOX51 hr
Mar 5, 2:50 AM ESTFlood WatchBOX48 hr
Mar 8, 3:52 AM ESTCoastal Flood WatchBOX35 hr
Mar 9, 3:35 AM ESTWind AdvisoryBOX29 hr
Mar 9, 3:37 AM ESTCoastal Flood AdvisoryBOX35 hr
Mar 9, 2:53 PM ESTFlood WatchBOX14 hr
Mar 10, 3:38 AM EDTWind AdvisoryBOX42 hr
Mar 10, 9:48 PM EDTCoastal Flood StatementBOX8 hr
Mar 22, 3:52 AM EDTFlood WatchBOX44 hr
Mar 23, 7:43 PM EDTSpecial Weather StatementBOX92 min
Mar 27, 3:07 PM EDTFlood WatchBOX39 hr
Apr 2, 2:00 PM EDTHigh Wind WatchBOX14 hr
Apr 2, 2:14 PM EDTCoastal Flood WatchBOX25 hr
Apr 3, 3:45 AM EDTHigh Wind WarningBOX33 hr
Apr 3, 3:06 PM EDTCoastal Flood WarningBOX19 hr
Apr 6, 3:55 PM EDTCoastal Flood AdvisoryBOX21 hr
Apr 7, 2:26 PM EDTCoastal Flood StatementBOX11 hr
Apr 8, 2:09 PM EDTCoastal Flood StatementBOX12 hr
Apr 9, 9:32 AM EDTCoastal Flood StatementBOX4 hr
Apr 9, 2:58 PM EDTCoastal Flood StatementBOX12 hr
Apr 10, 1:31 PM EDTCoastal Flood StatementBOX13 hr
Apr 11, 2:37 AM EDTWind AdvisoryBOX35 hr
Apr 11, 2:51 AM EDTCoastal Flood StatementBOX26 hr
Apr 24, 3:19 PM EDTFreeze WarningBOX17 hr
Apr 24, 4:18 PM EDTSpecial Weather StatementBOX87 min
Apr 25, 3:06 AM EDTFreeze WatchBOX11 hr
Apr 25, 2:08 PM EDTFreeze WarningBOX18 hr
May 7, 9:02 PM EDTCoastal Flood StatementBOX5 hr
May 8, 2:23 PM EDTMesoscale DiscussionSPC2 hr
May 8, 4:44 PM EDTMesoscale DiscussionSPC91 min
Jun 6, 7:29 PM EDTDense Fog AdvisoryBOX6 hr
Jun 14, 1:22 PM EDTSevere Thunderstorm WarningBOX53 min
Jun 17, 2:19 AM EDTHeat AdvisoryBOX49 hr
Jun 19, 3:39 AM EDTHeat AdvisoryBOX5 days
Jun 20, 12:59 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 20, 6:35 PM EDTMesoscale DiscussionSPC115 min
Jun 21, 2:46 PM EDTMesoscale DiscussionSPC89 min
Jun 21, 5:45 PM EDTMesoscale DiscussionSPC90 min
Jun 23, 12:59 PM EDTTornado WatchSPC9 hr
Jun 26, 8:33 PM EDTFlash Flood WarningBOX105 min
Jun 26, 8:47 PM EDTSevere Thunderstorm WarningBOX30 min
Jun 26, 8:53 PM EDTMesoscale DiscussionSPC97 min
Jun 26, 9:58 PM EDTSevere Thunderstorm WatchSPC3 hr
Jun 26, 11:12 PM EDTMesoscale DiscussionSPC63 min
Jun 26, 11:16 PM EDTSevere Thunderstorm WarningBOX59 min
Jun 26, 11:44 PM EDTFlash Flood WarningBOX45 min
Jun 30, 9:55 AM EDTMesoscale DiscussionSPC2 hr
Jun 30, 11:09 AM EDTSevere Thunderstorm WatchSPC10 hr
Jul 7, 3:39 PM EDTHeat AdvisoryBOX4 days
Jul 12, 3:17 AM EDTFlood WatchBOX36 hr
Jul 13, 3:06 PM EDTExcessive Heat WatchBOX24 hr
Jul 13, 3:06 PM EDTHeat AdvisoryBOX4 days
Jul 15, 2:14 PM EDTMesoscale DiscussionSPC2 hr
Jul 16, 5:34 PM EDTMesoscale DiscussionSPC86 min
Jul 16, 5:55 PM EDTSevere Thunderstorm WatchSPC5 hr
Jul 16, 8:32 PM EDTSevere Thunderstorm WarningBOX43 min
Jul 16, 9:10 PM EDTSevere Thunderstorm WarningBOX15 min
Jul 17, 7:11 PM EDTMesoscale DiscussionSPC2 hr
Jul 17, 7:12 PM EDTSevere Thunderstorm WarningBOX23 min
Jul 25, 2:15 AM EDTDense Fog AdvisoryBOX6 hr
Jul 28, 3:09 PM EDTHigh Surf AdvisoryBOX27 hr
Aug 1, 3:04 AM EDTHeat AdvisoryBOX64 hr
Aug 2, 4:11 PM EDTSevere Thunderstorm WarningBOX20 min
Aug 9, 9:09 PM EDTRip Current StatementBOX23 hr
Aug 15, 11:57 AM EDTMesoscale DiscussionSPC3 hr
Aug 15, 3:42 PM EDTSevere Thunderstorm WarningBOX48 min
Aug 15, 4:12 PM EDTSevere Thunderstorm WarningBOX48 min
Aug 19, 3:18 PM EDTCoastal Flood StatementBOX12 hr
Aug 26, 11:51 AM EDTMesoscale DiscussionSPC114 min
Aug 26, 1:04 PM EDTSevere Thunderstorm WatchSPC6 hr
Sep 5, 2:56 PM EDTRip Current StatementBOX53 hr
Sep 19, 11:38 AM EDTCoastal Flood WatchBOX16 hr
Sep 20, 3:08 AM EDTCoastal Flood AdvisoryBOX38 hr
Sep 20, 3:08 AM EDTCoastal Flood AdvisoryBOX15 hr
Sep 20, 3:08 AM EDTCoastal Flood AdvisoryBOX26 hr
Sep 20, 2:31 PM EDTCoastal Flood AdvisoryBOX51 hr
Oct 17, 3:07 PM EDTCoastal Flood AdvisoryBOX24 hr
Oct 25, 6:56 PM EDTRed Flag WarningBOX24 hr
Oct 31, 3:04 PM EDTRed Flag WarningBOX28 hr
Nov 5, 4:01 PM ESTRed Flag WarningBOX26 hr
Nov 7, 2:58 PM ESTRed Flag WarningBOX51 hr
Nov 9, 3:03 PM ESTRed Flag WarningBOX27 hr
Nov 11, 3:05 PM ESTRed Flag WarningBOX51 hr
Nov 14, 3:01 AM ESTCoastal Flood StatementBOX8 hr
Nov 14, 3:00 PM ESTCoastal Flood StatementBOX21 hr
Nov 14, 3:01 PM ESTRed Flag WarningBOX51 hr
Nov 15, 3:22 PM ESTCoastal Flood AdvisoryBOX22 hr
Nov 16, 2:27 PM ESTCoastal Flood StatementBOX24 hr
Nov 17, 2:29 PM ESTCoastal Flood StatementBOX26 hr
Nov 18, 6:29 PM ESTRed Flag WarningBOX24 hr
Dec 9, 1:51 PM ESTHigh Wind WatchBOX25 hr
Dec 10, 3:08 PM ESTHigh Wind WarningBOX33 hr
Dec 11, 10:04 PM ESTSpecial Weather StatementBOX56 min
Dec 20, 10:08 AM ESTWinter Weather AdvisoryBOX14 hr
Dec 27, 3:19 AM ESTWinter Weather AdvisoryBOX32 hr
Dec 28, 11:28 PM ESTDense Fog AdvisoryBOX12 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 archive20232025

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.