Alert archive / Massachusetts / Flash Flood Warnings
Flash Flood Warnings in Massachusetts, 2020
13 flash flood warnings in 2020. 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 flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Flash Flood Warnings
- 13
- Busiest month
- June5 flash flood warnings
- Busiest day
- June 28, 20205 flash flood warnings
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 1:58 PM EDT | Flash Flood Warning | BOX | Essex, Middlesex, Norfolk, Suffolk | 3 hr |
| Jun 28, 3:03 PM EDT | Flash Flood Warning | BOX | Norfolk, Plymouth, Suffolk | 117 min |
| Jun 28, 5:04 PM EDT | Flash Flood Warning | BOX | Bristol, Middlesex, Norfolk, Plymouth, Worcester | 116 min |
| Jun 28, 5:34 PM EDT | Flash Flood Warning | BOX | Worcester | 108 min |
| Jun 28, 6:23 PM EDT | Flash Flood Warning | BOX | Worcester | 83 min |
| Jul 6, 8:01 PM EDT | Flash Flood Warning | BOX | Hampden, Hampshire | 109 min |
| Jul 13, 3:31 PM EDT | Flash Flood Warning | BOX | Essex | 3 hr |
| Jul 14, 2:24 PM EDT | Flash Flood Warning | BOX | Bristol | 100 min |
| Jul 23, 3:03 PM EDT | Flash Flood Warning | BOX | Essex | 72 min |
| Aug 23, 5:47 PM EDT | Flash Flood Warning | BOX | Middlesex, Norfolk, Suffolk, Worcester | 118 min |
| Aug 23, 6:26 PM EDT | Flash Flood Warning | BOX | Bristol, Norfolk, Plymouth, Suffolk | 2 hr |
| Aug 23, 6:55 PM EDT | Flash Flood Warning | BOX | Franklin, Hampden, Hampshire, Worcester | 2 hr |
| Aug 24, 2:42 PM EDT | Flash Flood Warning | BOX | Bristol | 2 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.
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.