Alert archive / Massachusetts / Severe Thunderstorm Watches

Severe Thunderstorm Watches in Massachusetts, 2021

16 severe thunderstorm watches in 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm watches reaches back to 1997.

Severe Thunderstorm Watches by county

Each county as a circle sized by its count in 2021. Tap one for its archive.

Severe Thunderstorm Watches
16
Busiest month
July6 severe thunderstorm watches
Busiest day
May 26, 20212 severe thunderstorm watches

Over time

By month

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.

IssuedProductOfficeCountiesLasted
Apr 21, 12:28 PM EDTSevere Thunderstorm WatchSPCBerkshire, Franklin, Hampden, Hampshire, Worcester5 hr
May 26, 12:59 PM EDTSevere Thunderstorm WatchSPCBerkshire7 hr
May 26, 3:56 PM EDTSevere Thunderstorm WatchSPCEssex, Franklin, Hampden, Hampshire, Middlesex, Worcester5 hr
Jun 21, 3:45 PM EDTSevere Thunderstorm WatchSPCBerkshire7 hr
Jun 30, 3:21 PM EDTSevere Thunderstorm WatchSPCBerkshire, Bristol, Essex, Franklin, Hampden, Hampshire and 5 more7 hr
Jul 6, 1:13 PM EDTSevere Thunderstorm WatchSPCBerkshire, Bristol, Essex, Franklin, Hampden, Hampshire and 5 more7 hr
Jul 7, 2:41 PM EDTSevere Thunderstorm WatchSPCBerkshire, Bristol, Essex, Franklin, Hampden, Hampshire and 5 more10 hr
Jul 17, 1:13 PM EDTSevere Thunderstorm WatchSPCBerkshire, Franklin, Hampden, Hampshire10 hr
Jul 20, 3:05 PM EDTSevere Thunderstorm WatchSPCBerkshire8 hr
Jul 21, 11:56 AM EDTSevere Thunderstorm WatchSPCBarnstable, Bristol, Dukes, Nantucket, Norfolk, Plymouth and 1 more7 hr
Jul 27, 2:47 PM EDTSevere Thunderstorm WatchSPCBerkshire, Bristol, Essex, Franklin, Hampden, Hampshire and 5 more6 hr
Aug 12, 1:42 PM EDTSevere Thunderstorm WatchSPCBerkshire6 hr
Sep 8, 7:54 PM EDTSevere Thunderstorm WatchSPCBerkshire4 hr
Sep 15, 11:55 AM EDTSevere Thunderstorm WatchSPCBerkshire8 hr
Sep 15, 3:43 PM EDTSevere Thunderstorm WatchSPCFranklin, Hampden, Hampshire, Worcester6 hr
Oct 16, 12:35 PM EDTSevere Thunderstorm WatchSPCBerkshire6 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

The busiest days

Days with the most alerts issued, by UTC date.

  1. May 26, 20212severe thunderstorm watches
  2. September 15, 20212severe thunderstorm watches
  3. April 21, 20211severe thunderstorm watches
  4. June 21, 20211severe thunderstorm watches
  5. June 30, 20211severe thunderstorm watches
  6. July 6, 20211severe thunderstorm watches
  7. July 7, 20211severe thunderstorm watches
  8. July 17, 20211severe thunderstorm watches
  9. July 20, 20211severe thunderstorm watches
  10. July 21, 20211severe thunderstorm watches
  11. July 27, 20211severe thunderstorm watches
  12. August 12, 20211severe thunderstorm watches

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.