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
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 6 | 33% | 6 | 83% | 10 min |
| Flash flood warnings | 2 | 0 | 100% | 0 |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boston/Norton, MA: tornado warnings | 4 | 1 | 75% | 2 | 50% | 0 min |
| NWS Boston/Norton, MA: severe thunderstorm warnings | 109 | 81 | 26% | 290 | 91% | 26 min |
| NWS Boston/Norton, MA: flash flood warnings | 21 | 5 | 76% | 13 | 85% | 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 4, 3:27 PM EST | Winter Storm Watch | BOX | 35 hr |
| Jan 5, 2:24 PM EST | Winter Storm Warning | BOX | 56 hr |
| Jan 6, 2:53 AM EST | Winter Weather Advisory | BOX | 43 hr |
| Jan 6, 8:35 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 7, 12:16 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 8, 2:53 AM EST | High Wind Watch | BOX | 25 hr |
| Jan 8, 3:50 AM EST | Flood Watch | BOX | 5 days |
| Jan 8, 3:12 PM EST | Wind Advisory | BOX | 40 hr |
| Jan 8, 3:47 PM EST | Coastal Flood Watch | BOX | 20 hr |
| Jan 9, 11:20 AM EST | Coastal Flood Advisory | BOX | 25 hr |
| Jan 10, 8:32 AM EST | River Flood Warning | BOX | 37 hr |
| Jan 11, 3:23 AM EST | Coastal Flood Watch | BOX | 24 hr |
| Jan 11, 3:26 AM EST | High Wind Watch | BOX | 24 hr |
| Jan 12, 3:25 AM EST | Coastal Flood Warning | BOX | 37 hr |
| Jan 12, 3:25 AM EST | Coastal Flood Advisory | BOX | 10 hr |
| Jan 12, 3:31 AM EST | Wind Advisory | BOX | 32 hr |
| Jan 13, 8:50 AM EST | River Flood Warning | BOX | 34 hr |
| Jan 14, 11:49 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 14, 4:30 PM EST | Snow Squall Warning | BOX | 45 min |
| Jan 15, 3:40 PM EST | Winter Weather Advisory | BOX | 27 hr |
| Jan 16, 8:49 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 9, 3:17 PM EST | Coastal Flood Statement | BOX | 22 hr |
| Feb 10, 1:36 PM EST | Coastal Flood Statement | BOX | 24 hr |
| Feb 10, 3:25 PM EST | Winter Storm Watch | BOX | 48 hr |
| Feb 11, 3:56 AM EST | Coastal Flood Watch | BOX | 33 hr |
| Feb 11, 2:41 PM EST | Winter Storm Warning | BOX | 50 hr |
| Feb 12, 3:41 AM EST | Coastal Flood Warning | BOX | 37 hr |
| Feb 12, 3:20 PM EST | Winter Weather Advisory | BOX | 23 hr |
| Feb 13, 2:40 PM EST | Coastal Flood Advisory | BOX | 13 hr |
| Feb 17, 1:51 PM EST | Snow Squall Warning | BOX | 24 min |
| Feb 17, 2:28 PM EST | Snow Squall Warning | BOX | 32 min |
| Feb 17, 2:59 PM EST | Snow Squall Warning | BOX | 31 min |
| Feb 27, 4:18 AM EST | Wind Advisory | BOX | 51 hr |
| Mar 5, 2:50 AM EST | Flood Watch | BOX | 48 hr |
| Mar 8, 3:52 AM EST | Coastal Flood Watch | BOX | 35 hr |
| Mar 9, 3:35 AM EST | Wind Advisory | BOX | 29 hr |
| Mar 9, 3:37 AM EST | Coastal Flood Advisory | BOX | 35 hr |
| Mar 9, 2:53 PM EST | Flood Watch | BOX | 14 hr |
| Mar 10, 3:38 AM EDT | Wind Advisory | BOX | 42 hr |
| Mar 10, 9:48 PM EDT | Coastal Flood Statement | BOX | 8 hr |
| Mar 22, 3:52 AM EDT | Flood Watch | BOX | 44 hr |
| Mar 23, 7:43 PM EDT | Special Weather Statement | BOX | 92 min |
| Mar 27, 3:07 PM EDT | Flood Watch | BOX | 39 hr |
| Apr 2, 2:00 PM EDT | High Wind Watch | BOX | 14 hr |
| Apr 2, 2:14 PM EDT | Coastal Flood Watch | BOX | 25 hr |
| Apr 3, 3:45 AM EDT | High Wind Warning | BOX | 33 hr |
| Apr 3, 3:06 PM EDT | Coastal Flood Warning | BOX | 19 hr |
| Apr 6, 3:55 PM EDT | Coastal Flood Advisory | BOX | 21 hr |
| Apr 7, 2:26 PM EDT | Coastal Flood Statement | BOX | 11 hr |
| Apr 8, 2:09 PM EDT | Coastal Flood Statement | BOX | 12 hr |
| Apr 9, 9:32 AM EDT | Coastal Flood Statement | BOX | 4 hr |
| Apr 9, 2:58 PM EDT | Coastal Flood Statement | BOX | 12 hr |
| Apr 10, 1:31 PM EDT | Coastal Flood Statement | BOX | 13 hr |
| Apr 11, 2:37 AM EDT | Wind Advisory | BOX | 35 hr |
| Apr 11, 2:51 AM EDT | Coastal Flood Statement | BOX | 26 hr |
| Apr 24, 3:19 PM EDT | Freeze Warning | BOX | 17 hr |
| Apr 24, 4:18 PM EDT | Special Weather Statement | BOX | 87 min |
| Apr 25, 3:06 AM EDT | Freeze Watch | BOX | 11 hr |
| Apr 25, 2:08 PM EDT | Freeze Warning | BOX | 18 hr |
| May 7, 9:02 PM EDT | Coastal Flood Statement | BOX | 5 hr |
| May 8, 2:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 8, 4:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 6, 7:29 PM EDT | Dense Fog Advisory | BOX | 6 hr |
| Jun 14, 1:22 PM EDT | Severe Thunderstorm Warning | BOX | 53 min |
| Jun 17, 2:19 AM EDT | Heat Advisory | BOX | 49 hr |
| Jun 19, 3:39 AM EDT | Heat Advisory | BOX | 5 days |
| Jun 20, 12:59 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 20, 6:35 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jun 21, 2:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jun 21, 5:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 23, 12:59 PM EDT | Tornado Watch | SPC | 9 hr |
| Jun 26, 8:33 PM EDT | Flash Flood Warning | BOX | 105 min |
| Jun 26, 8:47 PM EDT | Severe Thunderstorm Warning | BOX | 30 min |
| Jun 26, 8:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 26, 9:58 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 26, 11:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 26, 11:16 PM EDT | Severe Thunderstorm Warning | BOX | 59 min |
| Jun 26, 11:44 PM EDT | Flash Flood Warning | BOX | 45 min |
| Jun 30, 9:55 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 11:09 AM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 7, 3:39 PM EDT | Heat Advisory | BOX | 4 days |
| Jul 12, 3:17 AM EDT | Flood Watch | BOX | 36 hr |
| Jul 13, 3:06 PM EDT | Excessive Heat Watch | BOX | 24 hr |
| Jul 13, 3:06 PM EDT | Heat Advisory | BOX | 4 days |
| Jul 15, 2:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 16, 5:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 16, 5:55 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 16, 8:32 PM EDT | Severe Thunderstorm Warning | BOX | 43 min |
| Jul 16, 9:10 PM EDT | Severe Thunderstorm Warning | BOX | 15 min |
| Jul 17, 7:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 7:12 PM EDT | Severe Thunderstorm Warning | BOX | 23 min |
| Jul 25, 2:15 AM EDT | Dense Fog Advisory | BOX | 6 hr |
| Jul 28, 3:09 PM EDT | High Surf Advisory | BOX | 27 hr |
| Aug 1, 3:04 AM EDT | Heat Advisory | BOX | 64 hr |
| Aug 2, 4:11 PM EDT | Severe Thunderstorm Warning | BOX | 20 min |
| Aug 9, 9:09 PM EDT | Rip Current Statement | BOX | 23 hr |
| Aug 15, 11:57 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 15, 3:42 PM EDT | Severe Thunderstorm Warning | BOX | 48 min |
| Aug 15, 4:12 PM EDT | Severe Thunderstorm Warning | BOX | 48 min |
| Aug 19, 3:18 PM EDT | Coastal Flood Statement | BOX | 12 hr |
| Aug 26, 11:51 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Aug 26, 1:04 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 5, 2:56 PM EDT | Rip Current Statement | BOX | 53 hr |
| Sep 19, 11:38 AM EDT | Coastal Flood Watch | BOX | 16 hr |
| Sep 20, 3:08 AM EDT | Coastal Flood Advisory | BOX | 38 hr |
| Sep 20, 3:08 AM EDT | Coastal Flood Advisory | BOX | 15 hr |
| Sep 20, 3:08 AM EDT | Coastal Flood Advisory | BOX | 26 hr |
| Sep 20, 2:31 PM EDT | Coastal Flood Advisory | BOX | 51 hr |
| Oct 17, 3:07 PM EDT | Coastal Flood Advisory | BOX | 24 hr |
| Oct 25, 6:56 PM EDT | Red Flag Warning | BOX | 24 hr |
| Oct 31, 3:04 PM EDT | Red Flag Warning | BOX | 28 hr |
| Nov 5, 4:01 PM EST | Red Flag Warning | BOX | 26 hr |
| Nov 7, 2:58 PM EST | Red Flag Warning | BOX | 51 hr |
| Nov 9, 3:03 PM EST | Red Flag Warning | BOX | 27 hr |
| Nov 11, 3:05 PM EST | Red Flag Warning | BOX | 51 hr |
| Nov 14, 3:01 AM EST | Coastal Flood Statement | BOX | 8 hr |
| Nov 14, 3:00 PM EST | Coastal Flood Statement | BOX | 21 hr |
| Nov 14, 3:01 PM EST | Red Flag Warning | BOX | 51 hr |
| Nov 15, 3:22 PM EST | Coastal Flood Advisory | BOX | 22 hr |
| Nov 16, 2:27 PM EST | Coastal Flood Statement | BOX | 24 hr |
| Nov 17, 2:29 PM EST | Coastal Flood Statement | BOX | 26 hr |
| Nov 18, 6:29 PM EST | Red Flag Warning | BOX | 24 hr |
| Dec 9, 1:51 PM EST | High Wind Watch | BOX | 25 hr |
| Dec 10, 3:08 PM EST | High Wind Warning | BOX | 33 hr |
| Dec 11, 10:04 PM EST | Special Weather Statement | BOX | 56 min |
| Dec 20, 10:08 AM EST | Winter Weather Advisory | BOX | 14 hr |
| Dec 27, 3:19 AM EST | Winter Weather Advisory | BOX | 32 hr |
| Dec 28, 11:28 PM EST | Dense Fog Advisory | BOX | 12 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.