Alert archive / Massachusetts / 2021
Weather alerts in Massachusetts, August 2021
94 weather alerts in August 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in August 2021. Tap one for its archive.
- Alerts
- 94
- Warnings
- 35
- Watches
- 11
- Advisories
- 20
- Busiest day
- August 19, 202118 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 3:18 AM EDT | Flash Flood Watch | ALY | Berkshire | 19 hr |
| Aug 3, 3:30 PM EDT | Small Craft Advisory | BOX | 3 days | |
| Aug 4, 3:11 AM EDT | Flash Flood Watch | BOX | Bristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk and 1 more | 34 hr |
| Aug 5, 12:12 AM EDT | Special Weather Statement | BOX | Bristol, Norfolk, Plymouth, Suffolk | 48 min |
| Aug 5, 3:14 AM EDT | High Surf Advisory | BOX | Bristol, Dukes, Nantucket | 17 hr |
| Aug 5, 5:27 AM EDT | Areal Flood Warning | BOX | Bristol, Plymouth | 7 hr |
| Aug 5, 6:52 AM EDT | Areal Flood Warning | BOX | Bristol, Norfolk, Plymouth, Suffolk | 6 hr |
| Aug 5, 8:03 PM EDT | Rip Current Statement | BOX | Dukes, Nantucket | 24 hr |
| Aug 10, 3:22 AM EDT | Excessive Heat Watch | BOX | Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex and 4 more | 60 hr |
| Aug 10, 3:22 AM EDT | Heat Advisory | BOX | Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex and 4 more | 41 hr |
| Aug 10, 3:30 AM EDT | Heat Advisory | ALY | Berkshire | 41 hr |
| Aug 10, 3:26 PM EDT | Small Craft Advisory | BOX | 24 hr | |
| Aug 11, 3:28 PM EDT | Excessive Heat Warning | BOX | Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex and 4 more | 29 hr |
| Aug 11, 3:28 PM EDT | Heat Advisory | BOX | Bristol, Franklin, Hampden, Hampshire, Plymouth | 29 hr |
| Aug 11, 4:00 PM EDT | Heat Advisory | ALY | Berkshire | 28 hr |
| Aug 11, 4:57 PM EDT | Mesoscale Discussion | SPC | Berkshire, Franklin, Hampden, Hampshire, Middlesex, Worcester | 93 min |
| Aug 11, 7:49 PM EDT | Dense Fog Advisory | BOX | Barnstable, Bristol, Dukes, Nantucket, Plymouth | 10 hr |
| Aug 12, 1:42 PM EDT | Severe Thunderstorm Watch | SPC | Berkshire | 6 hr |
| Aug 12, 2:53 PM EDT | Heat Advisory | BOX | Barnstable, Bristol, Essex, Franklin, Hampden, Hampshire and 5 more | 29 hr |
| Aug 12, 3:29 PM EDT | Severe Thunderstorm Warning | ALY | Berkshire | 61 min |
| Aug 12, 3:45 PM EDT | Special Weather Statement | BOX | Franklin, Hampshire | 60 min |
| Aug 12, 3:50 PM EDT | Mesoscale Discussion | SPC | Essex, Franklin, Hampden, Hampshire, Middlesex, Norfolk and 2 more | 55 min |
| Aug 12, 4:00 PM EDT | Heat Advisory | ALY | Berkshire | 28 hr |
| Aug 12, 4:29 PM EDT | Severe Thunderstorm Warning | ALY | Berkshire | 61 min |
| Aug 12, 4:45 PM EDT | Special Weather Statement | BOX | Franklin, Hampden, Hampshire | 60 min |
| Aug 12, 5:02 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire | 58 min |
| Aug 12, 5:35 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire, Worcester | 55 min |
| Aug 12, 5:42 PM EDT | Special Weather Statement | BOX | Worcester | 48 min |
| Aug 12, 5:51 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire, Worcester | 39 min |
| Aug 12, 6:13 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Hampden, Middlesex, Norfolk, Worcester | 62 min |
| Aug 12, 6:44 PM EDT | Mesoscale Discussion | SPC | Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex and 4 more | 61 min |
| Aug 12, 6:52 PM EDT | Special Marine Warning | BOX | 53 min | |
| Aug 12, 7:14 PM EDT | Special Weather Statement | BOX | Bristol, Plymouth | 61 min |
| Aug 12, 11:18 PM EDT | Special Weather Statement | BOX | Barnstable | 42 min |
| Aug 13, 1:12 AM EDT | Special Weather Statement | BOX | Hampden | 48 min |
| Aug 13, 8:48 PM EDT | Special Weather Statement | BOX | Franklin | 57 min |
| Aug 13, 9:54 PM EDT | Special Weather Statement | ALY | Berkshire | 51 min |
| Aug 14, 12:04 PM EDT | Special Weather Statement | BOX | Barnstable | 56 min |
| Aug 14, 12:07 PM EDT | Special Marine Warning | BOX | 68 min | |
| Aug 14, 12:08 PM EDT | Severe Thunderstorm Warning | BOX | Barnstable, Plymouth | 27 min |
| Aug 18, 4:36 PM EDT | Small Craft Advisory | BOX | 43 hr | |
| Aug 19, 8:14 AM EDT | Flash Flood Warning | BOX | Hampden, Worcester | 3 hr |
| Aug 19, 9:18 AM EDT | Flash Flood Warning | BOX | Hampden, Hampshire, Worcester | 3 hr |
| Aug 19, 10:14 AM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Worcester | 44 min |
| Aug 19, 10:21 AM EDT | Tornado Warning | BOX | Middlesex, Worcester | 29 min |
| Aug 19, 10:46 AM EDT | Flash Flood Warning | BOX | Essex, Middlesex, Norfolk, Suffolk, Worcester | 3 hr |
| Aug 19, 10:49 AM EDT | Mesoscale Discussion | SPC | Bristol, Middlesex, Norfolk, Plymouth, Suffolk | 86 min |
| Aug 19, 11:36 AM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex, Norfolk, Suffolk, Worcester | 54 min |
| Aug 19, 11:40 AM EDT | Flash Flood Warning | BOX | Essex, Middlesex | 3 hr |
| Aug 19, 12:32 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex, Norfolk, Suffolk | 58 min |
| Aug 19, 12:33 PM EDT | Special Marine Warning | BOX | 57 min | |
| Aug 19, 12:49 PM EDT | Tornado Warning | BOX | Essex, Middlesex, Suffolk | 39 min |
| Aug 19, 1:18 PM EDT | Tornado Warning | BOX | Middlesex, Worcester | 27 min |
| Aug 19, 1:37 PM EDT | Special Weather Statement | BOX | Essex | 38 min |
| Aug 19, 1:38 PM EDT | Special Marine Warning | BOX | 67 min | |
| Aug 19, 1:46 PM EDT | Special Weather Statement | BOX | Barnstable | 59 min |
| Aug 19, 1:48 PM EDT | Special Marine Warning | BOX | 57 min | |
| Aug 19, 1:54 PM EDT | Special Weather Statement | BOX | Middlesex | 51 min |
| Aug 19, 2:23 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex | 37 min |
| Aug 20, 5:10 AM EDT | Hurricane Watch | BOX | Barnstable, Bristol, Dukes, Nantucket, Plymouth | 30 hr |
| Aug 20, 5:10 AM EDT | Storm Surge Watch | BOX | Barnstable, Bristol, Dukes, Nantucket, Plymouth | 12 hr |
| Aug 20, 5:03 PM EDT | Storm Surge Warning | BOX | Barnstable, Bristol, Dukes, Nantucket, Plymouth | 45 hr |
| Aug 20, 11:09 PM EDT | Tropical Storm Warning | BOX | Barnstable, Bristol, Dukes, Nantucket, Norfolk, Plymouth and 1 more | 42 hr |
| Aug 21, 4:16 AM EDT | Flood Watch | BOX | Franklin, Hampden, Hampshire, Worcester | 64 hr |
| Aug 21, 4:18 AM EDT | Flood Watch | ALY | Berkshire | 66 hr |
| Aug 22, 7:28 AM EDT | Small Craft Advisory | BOX | 61 hr | |
| Aug 22, 9:43 AM EDT | Coastal Flood Advisory | BOX | Barnstable, Bristol, Dukes, Essex, Nantucket, Norfolk and 2 more | 16 hr |
| Aug 22, 1:53 PM EDT | Flash Flood Warning | BOX | Hampden, Hampshire | 4 hr |
| Aug 22, 3:09 PM EDT | Areal Flood Advisory | ALY | Berkshire | 3 hr |
| Aug 22, 4:03 PM EDT | Areal Flood Advisory | ALY | Berkshire | 3 hr |
| Aug 22, 4:11 PM EDT | Areal Flood Warning | BOX | Franklin, Hampden, Hampshire | 4 hr |
| Aug 23, 11:30 AM EDT | Special Weather Statement | BOX | Middlesex | 45 min |
| Aug 23, 11:45 AM EDT | Tornado Warning | BOX | Middlesex, Worcester | 45 min |
| Aug 23, 12:26 PM EDT | Tornado Warning | BOX | Middlesex, Worcester | 43 min |
| Aug 23, 1:35 PM EDT | Tornado Warning | BOX | Middlesex, Worcester | 40 min |
| Aug 23, 4:15 PM EDT | Special Weather Statement | BOX | Middlesex | 45 min |
| Aug 23, 5:19 PM EDT | Special Weather Statement | BOX | Middlesex | 41 min |
| Aug 23, 9:16 PM EDT | Areal Flood Advisory | ALY | Berkshire | 93 min |
| Aug 23, 9:34 PM EDT | Special Weather Statement | BOX | Bristol | 56 min |
| Aug 25, 2:55 PM EDT | Heat Advisory | BOX | Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex and 4 more | 29 hr |
| Aug 25, 3:14 PM EDT | Heat Advisory | ALY | Berkshire | 29 hr |
| Aug 26, 3:44 PM EDT | Heat Advisory | BOX | Bristol, Plymouth | 27 hr |
| Aug 27, 2:13 PM EDT | Special Marine Warning | BOX | 47 min | |
| Aug 27, 3:25 PM EDT | Small Craft Advisory | BOX | 24 hr | |
| Aug 27, 4:37 PM EDT | Special Weather Statement | BOX | Hampden | 53 min |
| Aug 27, 4:44 PM EDT | Special Weather Statement | BOX | Norfolk | 61 min |
| Aug 27, 4:59 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 38 min |
| Aug 30, 3:12 PM EDT | Flash Flood Watch | BOX | Barnstable, Bristol, Dukes, Essex, Franklin, Hampden and 7 more | 65 hr |
| Aug 30, 3:14 PM EDT | Flash Flood Watch | ALY | Berkshire | 61 hr |
| Aug 30, 5:37 PM EDT | Special Weather Statement | BOX | Worcester | 53 min |
| Aug 30, 6:21 PM EDT | Special Weather Statement | ALY | Berkshire | 24 min |
| Aug 30, 6:48 PM EDT | Special Weather Statement | ALY | Berkshire | 27 min |
| Aug 30, 7:53 PM EDT | Special Weather Statement | BOX | Hampden | 52 min |
| Aug 31, 3:56 PM EDT | Gale Watch | BOX | 12 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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. Rebuilt daily.