Salt Tidings

Tide charts › MA

Boston, MA tide chart and marine alerts

NOAA station 8443970 · 42.354°N, 71.050°W. Get an email only when the NWS issues a marine or coastal alert here, or the tide runs unusually high or low.

NOAA station 8443970

Boston, MA

Tide now2.8 ft↑ rising · predicted
Next high12:48 AM8.8 ft
Next low6:39 AM1.5 ft
9.1 ft 12:07 AM1.3 ft 5:58 AM10.2 ft 12:07 PM0.3 ft 6:34 PM

Small Craft Advisory until Fri 7:00 PM

NOAA sensor 3.6 ft at 8:42 PM (+1.1 ft vs prediction)Times EST · NOAA source

Today and tomorrow

12 AM6 AM12 PM6 PM04812Unusually high: 12.3 ftUnusually low: −1.0 ft9.1 ft 12:07 AM1.3 ft 5:58 AM10.2 ft 12:07 PM0.3 ft 6:34 PM8.8 ft 12:48 AM1.5 ft 6:39 AM10.0 ft 12:48 PM0.5 ft 7:15 PM

Today Wednesday, Nov 11

TideTime (EST)Height
High12:07 AM9.1 ft
Low5:58 AM1.3 ft
High12:07 PM10.2 ft
Low6:34 PM0.3 ft

Tomorrow Thursday, Nov 12

TideTime (EST)Height
High12:48 AM8.8 ft
Low6:39 AM1.5 ft
High12:48 PM10.0 ft
Low7:15 PM0.5 ft

Friday Friday, Nov 13

TideTime (EST)Height
High1:30 AM8.6 ft
Low7:20 AM1.8 ft
High1:30 PM9.7 ft

Active NWS alerts

Unusual tides here

We flag a predicted high at or above 12.3 ft MLLW (NOAA's minor high-tide flooding threshold for this station). We flag a predicted low at or below −1.0 ft MLLW. Mean higher high water is 10.3 ft.

No predicted tide in the next few days crosses either line.

Official sources

Predictions are astronomical tides. Wind and pressure can move the real water level a foot or more. NOAA's sensor here read 3.6 ft at 8:42 PM.

Nearby stations