Skip to contentCALCHIS
floodactive

Coastal Flood Watch issued September 23 at 3:09PM EDT until September 26 at 5:00PM EDT by NWS Boston/Norton MA

5.0
41.9862°N, 70.6088°W·US-MA
Started just now
NWS flood alerts data as of
Event Details
Typeflood
Severity5.0
Statusactive
Location41.9862°N, 70.6088°W (MA)
Started2026-09-25T21:00:00+00:00
Last Updated2026-09-24T04:50:52.892+00:00
Sourcenoaa_ahps
Source URLapi.weather.gov
Confidence1.00
Impact Analysis

No impact zones are drawn for this event, so there is no population or structure estimate.

Historical Comparison
2010 PLYMOUTH County, MASSACHUSETTS Flood73% match

Flood in MASSACHUSETTS, 25km from current event, $16M in recorded damage

PLYMOUTH County, MASSACHUSETTSDamage: $16.1M
2010 PLYMOUTH County, MASSACHUSETTS Flood70% match

Flood in MASSACHUSETTS, 30km from current event, $8M in recorded damage

PLYMOUTH County, MASSACHUSETTSDamage: $8.1M
2020 NORFOLK County, MASSACHUSETTS Flash Flood69% match

Flash Flood in MASSACHUSETTS, 54km from current event, $30M in recorded damage

NORFOLK County, MASSACHUSETTSDamage: $30.0M

Historical comparison based on peril type, geography, and severity. Past events do not predict future outcomes.

View on Live Map
Related

Is this event approaching a location you care about?

Calchis tracks live federal event feeds against your own saved addresses and portfolios, and alerts you when a consequence zone reaches one.

Free includes Live map + 3 triggers + 10 bond positions. Analyst is $149/mo for 1,000-location portfolios, ep curves, predictions, parametric triggers.

Zone estimates are based on scientific models and may differ from actual local conditions.