Alert archive / Massachusetts

Weather alerts in Massachusetts, 2020

1,259 weather alerts in 2020, 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 2020. Tap one for its archive.

Alerts
1,259
Warnings
436
Watches
85
Advisories
299
Busiest month
July243 alerts
Busiest day
June 28, 202049 alerts

Over time

By month

The alerts

1,259 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

ProductAlerts
Severe storms
Severe Thunderstorm Warning156
Tornado Warning8
Severe Thunderstorm Watch9
Tornado Watch4
Mesoscale Discussion48
Special Weather Statement376
Flooding
Areal Flood Warning21
Flash Flood Warning13
River Flood Warning7
Flash Flood Watch4
Flood Watch2
Areal Flood Advisory12
Winter
Snow Squall Warning1
Winter Storm Warning9
Winter Storm Watch8
Winter Weather Advisory24
Heat
Excessive Heat Warning1
Excessive Heat Watch1
Heat Advisory6
Cold
Freeze Warning7
Freeze Watch2
Frost Advisory11
Wind and dust
High Wind Warning13
High Wind Watch10
Wind Advisory44
Fire
Red Flag Warning3
Fire Weather Watch3
Fog and smoke
Dense Fog Advisory25
Tropical
Tropical Storm Warning2
Tropical Storm Watch2
Coast and beach
Coastal Flood Warning1
Coastal Flood Watch1
Coastal Flood Advisory15
High Surf Advisory11
Coastal Flood Statement13
Rip Current Statement2
Marine
Gale Warning55
Special Marine Warning130
Storm Warning9
Gale Watch34
Storm Watch5
Heavy Freezing Spray Advisory1
Small Craft Advisory150

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. June 28, 202049alerts
  2. July 23, 202047alerts
  3. July 14, 202043alerts
  4. June 29, 202042alerts
  5. August 23, 202034alerts
  6. June 6, 202032alerts
  7. March 30, 202028alerts
  8. August 22, 202028alerts
  9. August 24, 202023alerts
  10. July 30, 202022alerts
  11. October 7, 202022alerts
  12. December 25, 202021alerts

Nearby

Alerts in force nowTornadoes on recordThe radar archive20192021

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.