Alert archive / Massachusetts / 2021
Weather alerts in Massachusetts, May 2021
48 weather alerts in May 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 May 2021. Tap one for its archive.
- Alerts
- 48
- Warnings
- 13
- Watches
- 3
- Advisories
- 18
- Busiest day
- May 26, 202121 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 |
|---|---|---|---|---|
| May 1, 2:40 AM EDT | Small Craft Advisory | BOX | 11 hr | |
| May 2, 3:12 AM EDT | Small Craft Advisory | BOX | 35 hr | |
| May 4, 3:45 AM EDT | Small Craft Advisory | BOX | 35 hr | |
| May 5, 2:15 PM EDT | Small Craft Advisory | BOX | 26 hr | |
| May 8, 3:33 AM EDT | Small Craft Advisory | BOX | 43 hr | |
| May 9, 9:47 AM EDT | Small Craft Advisory | BOX | 24 hr | |
| May 11, 3:08 AM EDT | Small Craft Advisory | BOX | 27 hr | |
| May 11, 10:03 PM EDT | Small Craft Advisory | BOX | 8 hr | |
| May 12, 3:27 AM EDT | Frost Advisory | ALY | Berkshire | 29 hr |
| May 16, 1:38 PM EDT | Special Marine Warning | BOX | 15 min | |
| May 16, 5:30 PM EDT | Special Weather Statement | BOX | Middlesex | 45 min |
| May 17, 4:19 PM EDT | Special Weather Statement | BOX | Hampshire | 26 min |
| May 21, 3:18 AM EDT | Small Craft Advisory | BOX | 5 days | |
| May 23, 3:27 AM EDT | Small Craft Advisory | BOX | 18 hr | |
| May 23, 1:20 PM EDT | Mesoscale Discussion | SPC | Barnstable, Berkshire, Bristol, Dukes, Franklin, Hampden and 7 more | 115 min |
| May 23, 4:02 PM EDT | Special Weather Statement | BOX | Worcester | 28 min |
| May 24, 6:37 PM EDT | Small Craft Advisory | BOX | 39 hr | |
| May 25, 10:05 PM EDT | Small Craft Advisory | BOX | 12 hr | |
| May 26, 9:51 AM EDT | Small Craft Advisory | BOX | 21 hr | |
| May 26, 12:59 PM EDT | Severe Thunderstorm Watch | SPC | Berkshire | 7 hr |
| May 26, 3:21 PM EDT | Mesoscale Discussion | SPC | Franklin, Hampden, Hampshire, Middlesex, Worcester | 54 min |
| May 26, 3:56 PM EDT | Severe Thunderstorm Watch | SPC | Essex, Franklin, Hampden, Hampshire, Middlesex, Worcester | 5 hr |
| May 26, 4:23 PM EDT | Severe Thunderstorm Warning | ALY | Berkshire | 37 min |
| May 26, 4:41 PM EDT | Mesoscale Discussion | SPC | Berkshire, Franklin, Hampden, Hampshire | 64 min |
| May 26, 4:57 PM EDT | Severe Thunderstorm Warning | ALY | Berkshire | 48 min |
| May 26, 4:58 PM EDT | Special Weather Statement | ALY | Berkshire | 32 min |
| May 26, 5:03 PM EDT | Special Weather Statement | BOX | Franklin | 27 min |
| May 26, 5:30 PM EDT | Special Weather Statement | BOX | Franklin | 45 min |
| May 26, 5:35 PM EDT | Special Weather Statement | ALY | Berkshire | 25 min |
| May 26, 5:47 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 58 min |
| May 26, 5:54 PM EDT | Severe Thunderstorm Warning | ALY | Berkshire | 66 min |
| May 26, 6:07 PM EDT | Mesoscale Discussion | SPC | Hampden, Hampshire, Middlesex, Worcester | 113 min |
| May 26, 6:13 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Middlesex, Worcester | 62 min |
| May 26, 6:39 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire, Worcester | 66 min |
| May 26, 7:05 PM EDT | Severe Thunderstorm Warning | BOX | Hampden | 55 min |
| May 26, 7:15 PM EDT | Special Weather Statement | BOX | Essex, Middlesex | 45 min |
| May 26, 7:21 PM EDT | Special Marine Warning | BOX | 54 min | |
| May 26, 7:45 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire, Worcester | 60 min |
| May 26, 8:03 PM EDT | Special Marine Warning | BOX | 37 min | |
| May 26, 9:37 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Norfolk | 38 min |
| May 27, 2:52 PM EDT | Gale Watch | BOX | 13 hr | |
| May 28, 3:39 AM EDT | Gale Warning | BOX | 48 hr | |
| May 28, 3:41 AM EDT | Wind Advisory | BOX | Barnstable, Dukes, Nantucket | 39 hr |
| May 28, 3:46 AM EDT | Coastal Flood Statement | BOX | Barnstable, Essex, Nantucket, Norfolk, Plymouth, Suffolk | 24 hr |
| May 28, 4:13 PM EDT | Small Craft Advisory | BOX | 12 hr | |
| May 29, 4:03 AM EDT | Coastal Flood Statement | BOX | Barnstable, Essex, Nantucket, Norfolk, Plymouth, Suffolk | 12 hr |
| May 29, 3:47 PM EDT | Small Craft Advisory | BOX | 51 hr | |
| May 29, 3:52 PM EDT | Coastal Flood Advisory | BOX | Barnstable, Essex, Nantucket, Norfolk, Plymouth, Suffolk | 12 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 9 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 4 |
| Special Weather Statement | 8 |
| Cold | |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 1 |
| Coast and beach | |
| Coastal Flood Advisory | 1 |
| Coastal Flood Statement | 2 |
| Marine | |
| Gale Warning | 1 |
| Special Marine Warning | 3 |
| Gale Watch | 1 |
| Small Craft Advisory | 15 |
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.