Alert archive / Massachusetts / Coastal Flood Statements in 2020
Coastal Flood Statement 9, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this coastal flood statement at Sep 20, 2020, 3:37 PM EDT for 6 counties in Massachusetts. It took effect at Sep 21, 2020, 11:00 AM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Sep 20, 2020, 3:37 PM EDT (19:37 UTC)
- In effect from
- Sep 21, 2020, 11:00 AM EDT
- Expired
- Sep 21, 2020, 6:00 PM EDT
- In force
- 7 hr
- Issued by
- NWS Boston/Norton, MA
Counties Barnstable County, MA, Essex County, MA, Nantucket County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA
The radar
The Boston radar (KBOX), 37 km from the middle of the area, began a volume at 19:41 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Chatham, MA (KCHH), launched 12:00Z, 7.6 hours before the alert went out and 71 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 16 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 1347 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- -60 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
277
WHUS41 KBOX 201937
CFWBOX
Coastal Hazard Message
National Weather Service Boston/Norton MA
337 PM EDT Sun Sep 20 2020
MAZ007-019-022-024-210345-
/O.NEW.KBOX.CF.S.0009.200921T1500Z-200921T2200Z/
/O.CON.KBOX.SU.Y.0011.000000T0000Z-200923T0000Z/
Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Nantucket MA-
337 PM EDT Sun Sep 20 2020
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY...
* WHAT...For the High Surf Advisory, large breaking waves of 6
to 21 feet in the surf zone. In addition, a Coastal Flood
Statement is in effect for splashover and pockets of
very minor coastal flooding that are possible during the
afternoon astronomical high tide.
* WHERE...Eastern Plymouth MA, Eastern Essex MA, Barnstable MA
and Nantucket MA Counties.
* WHEN...For the High Surf Advisory, until 8 PM EDT Tuesday. For
the Coastal Flood Statement, from Monday morning through
Monday afternoon.
* IMPACTS...Minor coastal flooding is expected along the North Shore
from Gloucester to Newburyport. Wave action will likely cause
some washover onto coastal roads around the time of high tide.
Minor coastal flooding begins on Easy Street in Nantucket.
Expect minor coastal flooding of some low-lying roadways.
Minor coastal flooding occurs in Provincetown, in the vicinity
of Race Point Road and Provincetown Airport. In Truro
backwater flooding occurs along the Pamet River. Dangerous
swimming and surfing conditions and localized beach erosion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
&&
Time of high total tides are approximate to the nearest hour.
Merrimack River near Newburyport MA
MLLW Categories - Minor 11.0 ft, Moderate 12.0 ft, Major 13.5 ft
MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 4.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/02 PM 9.5/10.0 0.0/ 0.5 -0.5/ 0.0 1 None
21/03 AM 8.8/ 9.3 -0.8/-0.2 -0.5/ 0.0 1 None
21/03 PM 9.7/10.2 0.2/ 0.7 -0.2/ 0.2 1 None
22/04 AM 8.4/ 8.9 -1.1/-0.7 -0.5/ 0.0 1 None
22/04 PM 9.5/10.0 0.0/ 0.5 -0.2/ 0.3 1 None
Gloucester Harbor
MLLW Categories - Minor 11.5 ft, Moderate 13.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.0 ft, Moderate 3.5 ft, Major 5.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/02 PM 11.4/11.9 1.9/ 2.3 0.2/ 0.8 5-6 Minor
21/03 AM 10.7/11.2 1.2/ 1.7 0.2/ 0.8 5-6 None
21/03 PM 11.2/11.7 1.7/ 2.2 0.2/ 0.8 6 Minor
22/04 AM 10.5/11.0 1.0/ 1.5 0.6/ 1.1 6-7 None
22/04 PM 12.2/12.7 2.7/ 3.2 1.6/ 2.0 9-11 Minor
Scituate MA
MLLW Categories - Minor 11.5 ft, Moderate 13.5 ft, Major 15.5 ft
MHHW Categories - Minor 1.8 ft, Moderate 3.8 ft, Major 5.8 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/02 PM 11.4/11.9 1.7/ 2.2 0.2/ 0.8 6 Minor
21/03 AM 10.7/11.2 1.0/ 1.5 0.2/ 0.8 5 None
21/03 PM 11.3/11.8 1.6/ 2.0 0.2/ 0.8 5 Minor
22/04 AM 10.5/11.0 0.8/ 1.3 0.6/ 1.1 5-6 None
22/04 PM 12.1/12.6 2.3/ 2.8 1.3/ 1.8 8-10 Minor
Wings Neck
MLLW Categories - Minor 6.5 ft, Moderate 9.0 ft, Major 11.5 ft
MHHW Categories - Minor 2.1 ft, Moderate 4.6 ft, Major 7.1 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/11 AM 5.7/ 6.2 1.3/ 1.8 0.2/ 0.8 1-2 None
20/11 PM 5.0/ 5.5 0.6/ 1.1 0.2/ 0.8 1 None
21/12 PM 5.5/ 6.0 1.1/ 1.6 0.2/ 0.8 2 None
22/12 AM 4.9/ 5.4 0.5/ 1.0 0.5/ 1.0 1 None
22/01 PM 5.4/ 5.9 1.0/ 1.5 0.5/ 1.0 3 None
23/01 AM 5.9/ 6.4 1.5/ 2.0 1.8/ 2.2 1 None
Provincetown Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.9 ft, Moderate 3.9 ft, Major 4.9 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/02 PM 12.0/12.5 1.9/ 2.3 0.2/ 0.8 2 None
21/03 AM 11.3/11.8 1.2/ 1.7 0.2/ 0.8 2 None
21/03 PM 11.8/12.3 1.7/ 2.2 0.2/ 0.8 1-2 None
22/04 AM 11.1/11.6 1.0/ 1.5 0.7/ 1.1 2-3 None
22/04 PM 13.3/13.8 3.2/ 3.7 2.1/ 2.6 3 Minor
Chatham MA - East Coast
MLLW Categories - Minor 9.0 ft, Moderate 11.5 ft, Major 13.0 ft
MHHW Categories - Minor 1.3 ft, Moderate 3.8 ft, Major 5.3 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/03 PM 6.0/ 6.5 -1.8/-1.3 0.2/ 0.8 6-7 None
21/04 AM 5.6/ 6.1 -2.2/-1.7 0.2/ 0.8 7-8 None
21/04 PM 6.1/ 6.6 -1.7/-1.2 0.2/ 0.8 7-8 None
22/04 AM 5.6/ 6.1 -2.2/-1.7 0.6/ 1.1 7-8 None
22/05 PM 7.6/ 8.1 -0.2/ 0.3 1.9/ 2.3 11-12 None
Buzzards Bay at Woods Hole
MLLW Categories - Minor 5.5 ft, Moderate 7.0 ft, Major 8.5 ft
MHHW Categories - Minor 3.5 ft, Moderate 5.0 ft, Major 6.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/11 AM 3.5/ 4.0 1.5/ 2.0 0.2/ 0.8 2 None
20/11 PM 2.8/ 3.4 0.9/ 1.4 0.2/ 0.8 2 None
21/12 PM 3.4/ 3.9 1.4/ 1.9 0.2/ 0.8 2 None
22/12 AM 3.2/ 3.7 1.2/ 1.7 0.7/ 1.1 2 None
22/01 PM 4.0/ 4.5 2.0/ 2.5 1.1/ 1.6 3 None
23/01 AM 4.6/ 5.1 2.6/ 3.1 2.2/ 2.7 2-3 None
Dennis - Sesuit Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.5 ft, Moderate 4.0 ft, Major 5.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/02 PM 12.5/13.0 2.0/ 2.5 0.2/ 0.8 2 None
21/03 AM 11.8/12.3 1.3/ 1.8 0.2/ 0.8 2 None
21/03 PM 12.4/12.9 1.9/ 2.3 0.2/ 0.8 2 None
22/04 AM 11.9/12.4 1.4/ 1.9 1.0/ 1.5 2-3 None
22/04 PM 14.3/14.8 3.7/ 4.2 2.5/ 3.0 3 Moderate
Chatham - South side
MLLW Categories - Minor 9.0 ft, Moderate 10.5 ft, Major 11.5 ft
MHHW Categories - Minor 4.5 ft, Moderate 6.0 ft, Major 7.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/03 PM 4.9/ 5.4 0.4/ 0.9 0.2/ 0.8 2-3 None
21/04 AM 4.4/ 4.9 -0.2/ 0.3 0.2/ 0.8 2 None
21/04 PM 4.9/ 5.4 0.4/ 0.9 0.2/ 0.8 2 None
22/04 AM 4.6/ 5.1 0.1/ 0.6 0.7/ 1.1 2-3 None
22/05 PM 6.2/ 6.8 1.8/ 2.2 1.7/ 2.2 3 None
Sandwich Harbor
MLLW Categories - Minor 12.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 1.7 ft, Moderate 3.7 ft, Major 4.7 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/02 PM 10.7/11.2 0.4/ 0.9 0.2/ 0.8 4 None
21/03 AM 10.0/10.5 -0.3/ 0.2 0.2/ 0.8 3 None
21/03 PM 10.6/11.1 0.2/ 0.8 0.2/ 0.8 3 None
22/04 AM 10.2/10.7 -0.2/ 0.3 1.0/ 1.5 3 None
22/04 PM 12.4/12.9 2.1/ 2.6 2.5/ 3.0 5-6 Minor
Nantucket Harbor
MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.0 ft
MHHW Categories - Minor 1.4 ft, Moderate 2.9 ft, Major 4.4 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/03 PM 4.2/ 4.7 0.6/ 1.1 0.2/ 0.8 4 None
21/04 AM 3.7/ 4.2 0.1/ 0.6 0.2/ 0.8 4 None
21/04 PM 4.2/ 4.7 0.6/ 1.1 0.2/ 0.8 4 None
22/05 AM 3.7/ 4.2 0.1/ 0.6 0.5/ 1.0 4-5 None
22/05 PM 5.2/ 5.7 1.6/ 2.0 1.4/ 1.9 6 Minor
&&
$$
MAZ020-023-RIZ006>008-210345-
/O.CON.KBOX.SU.Y.0011.000000T0000Z-200923T0000Z/
Southern Bristol MA-Dukes MA-Washington RI-Newport RI-
Block Island RI-
337 PM EDT Sun Sep 20 2020
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY...
* WHAT...Large breaking waves of 7 to 13 feet in the surf zone.
* WHERE...In Massachusetts, Dukes MA and Southern Bristol MA
Counties. In Rhode Island, Washington RI, Newport RI and Block
Island RI Counties.
* WHEN...Until 8 PM EDT Tuesday.
* IMPACTS...Dangerous swimming and surfing conditions and
localized beach erosion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
$$
MAZ015-016-210345-
/O.NEW.KBOX.CF.S.0009.200921T1500Z-200921T2200Z/
Suffolk MA-Eastern Norfolk MA-
337 PM EDT Sun Sep 20 2020
* WHAT...A Coastal Flood Statement is in effect for splashover
and pockets of very minor coastal flooding that are possible
during the afternoon astronomical high tide.
* WHERE...Eastern Norfolk MA and Suffolk MA Counties.
* WHEN...From Monday morning through Monday afternoon.
* IMPACTS...Some water on low lying roads and property.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
&&
&&
Time of high total tides are approximate to the nearest hour.
Boston Harbor
MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.4 ft, Moderate 4.4 ft, Major 5.9 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/02 PM 11.9/12.4 1.8/ 2.2 0.2/ 0.8 2 None
21/03 AM 11.2/11.7 1.1/ 1.6 0.2/ 0.8 1 None
21/03 PM 11.7/12.2 1.6/ 2.0 0.2/ 0.8 2 None
22/04 AM 10.9/11.4 0.8/ 1.3 0.6/ 1.1 1-2 None
22/04 PM 12.6/13.1 2.5/ 3.0 1.5/ 2.0 2 Minor
Revere
MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.6 ft, Moderate 4.6 ft, Major 6.1 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/02 PM 11.8/12.3 1.9/ 2.3 0.2/ 0.8 5 None
21/03 AM 11.1/11.6 1.2/ 1.7 0.2/ 0.8 4-5 None
21/03 PM 11.7/12.2 1.8/ 2.2 0.2/ 0.8 5 None
22/04 AM 10.7/11.2 0.8/ 1.3 0.5/ 1.0 5 None
22/04 PM 12.4/12.9 2.5/ 3.0 1.4/ 1.9 7-8 Minor
&&
$$4 follow-up statements
908
WHUS41 KBOX 210130
CFWBOX
Coastal Hazard Message
National Weather Service Boston/Norton MA
930 PM EDT Sun Sep 20 2020
MAZ007-019-022-024-210930-
/O.CON.KBOX.SU.Y.0011.000000T0000Z-200923T0000Z/
/O.CON.KBOX.CF.S.0009.200921T1500Z-200921T2200Z/
Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Nantucket MA-
930 PM EDT Sun Sep 20 2020
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY...
* WHAT...For the High Surf Advisory, large breaking waves of 6
to 21 feet in the surf zone with the worst of those conditions
on Tuesday. For the coastal flood statement, expect some splashover
and very minor coastal flooding during the Monday afternoon high tide.
* WHERE...Eastern Plymouth MA, Eastern Essex MA, Barnstable MA
and Nantucket MA Counties.
* WHEN...For the High Surf Advisory, until 8 PM EDT Tuesday. For
the, from Monday morning through Monday afternoon.
* IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion.
Some splashover on typically vulnerable roadways.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
&&
Time of high total tides are approximate to the nearest hour.
Merrimack River near Newburyport MA
MLLW Categories - Minor 11.0 ft, Moderate 12.0 ft, Major 13.5 ft
MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 4.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 8.8/ 9.3 -0.8/-0.2 -0.5/ 0.0 1 None
21/03 PM 9.7/10.2 0.2/ 0.7 -0.2/ 0.2 1 None
22/04 AM 8.4/ 8.9 -1.1/-0.7 -0.5/ 0.0 1 None
22/04 PM 9.5/10.0 0.0/ 0.5 -0.2/ 0.3 1 None
23/05 AM 8.0/ 8.5 -1.6/-1.1 -0.5/ 0.0 1 None
Gloucester Harbor
MLLW Categories - Minor 11.5 ft, Moderate 13.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.0 ft, Moderate 3.5 ft, Major 5.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 10.4/10.9 0.9/ 1.4 0.0/ 0.5 5-6 None
21/03 PM 10.9/11.4 1.4/ 1.9 0.0/ 0.5 6 None
22/04 AM 10.2/10.7 0.7/ 1.1 0.2/ 0.8 6-7 None
22/04 PM 11.9/12.4 2.3/ 2.8 1.3/ 1.8 7-11 Minor
23/04 AM 10.2/10.7 0.7/ 1.1 1.0/ 1.5 9-11 None
Scituate MA
MLLW Categories - Minor 11.5 ft, Moderate 13.5 ft, Major 15.5 ft
MHHW Categories - Minor 1.8 ft, Moderate 3.8 ft, Major 5.8 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 10.7/11.2 1.0/ 1.5 0.2/ 0.8 5-6 None
21/03 PM 11.3/11.8 1.6/ 2.0 0.2/ 0.8 6 Minor
22/04 AM 10.5/11.0 0.8/ 1.3 0.6/ 1.1 5-6 None
22/04 PM 12.1/12.6 2.3/ 2.8 1.3/ 1.8 6-8 Minor
23/04 AM 10.4/10.9 0.7/ 1.1 1.1/ 1.6 8-9 None
Wings Neck
MLLW Categories - Minor 6.5 ft, Moderate 9.0 ft, Major 11.5 ft
MHHW Categories - Minor 2.1 ft, Moderate 4.6 ft, Major 7.1 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/11 PM 5.0/ 5.5 0.6/ 1.1 0.2/ 0.8 1 None
21/12 PM 5.5/ 6.0 1.1/ 1.6 0.2/ 0.8 1 None
22/12 AM 4.9/ 5.4 0.5/ 1.0 0.5/ 1.0 1 None
22/01 PM 5.4/ 5.9 1.0/ 1.5 0.5/ 1.0 3 None
23/01 AM 5.9/ 6.4 1.5/ 2.0 1.8/ 2.2 2-3 None
23/02 PM 5.2/ 5.7 0.9/ 1.4 0.7/ 1.1 1-2 None
Provincetown Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.9 ft, Moderate 3.9 ft, Major 4.9 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 11.5/12.0 1.4/ 1.9 0.5/ 1.0 1 None
21/03 PM 12.0/12.5 1.9/ 2.3 0.5/ 1.0 1 None
22/04 AM 11.1/11.6 1.0/ 1.5 0.7/ 1.1 1 None
22/04 PM 13.3/13.8 3.2/ 3.7 2.1/ 2.6 8-10 Minor
23/05 AM 11.6/12.1 1.5/ 2.0 1.7/ 2.2 7-9 None
Chatham MA - East Coast
MLLW Categories - Minor 9.0 ft, Moderate 11.5 ft, Major 13.0 ft
MHHW Categories - Minor 1.3 ft, Moderate 3.8 ft, Major 5.3 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 AM 5.7/ 6.2 -2.0/-1.5 0.5/ 1.0 8 None
21/04 PM 6.2/ 6.8 -1.5/-1.0 0.5/ 1.0 8 None
22/04 AM 5.7/ 6.2 -2.0/-1.5 0.8/ 1.3 7-8 None
22/05 PM 7.8/ 8.3 0.1/ 0.6 2.1/ 2.6 10-11 None
23/05 AM 6.2/ 6.8 -1.5/-1.0 1.5/ 2.0 8-10 None
Buzzards Bay at Woods Hole
MLLW Categories - Minor 5.5 ft, Moderate 7.0 ft, Major 8.5 ft
MHHW Categories - Minor 3.5 ft, Moderate 5.0 ft, Major 6.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
20/11 PM 3.0/ 3.5 1.0/ 1.5 0.4/ 0.9 1 None
21/12 PM 3.7/ 4.2 1.7/ 2.2 0.6/ 1.1 1 None
22/12 AM 3.2/ 3.7 1.2/ 1.7 0.7/ 1.1 1 None
22/01 PM 4.0/ 4.5 2.0/ 2.5 1.1/ 1.6 3 None
23/01 AM 4.6/ 5.1 2.6/ 3.1 2.2/ 2.7 2-3 None
23/02 PM 3.7/ 4.2 1.7/ 2.2 1.0/ 1.5 1-2 None
Dennis - Sesuit Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.5 ft, Moderate 4.0 ft, Major 5.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 12.3/12.8 1.8/ 2.2 0.8/ 1.3 2 None
21/03 PM 12.9/13.4 2.3/ 2.8 0.8/ 1.3 1-2 Minor
22/04 AM 12.0/12.5 1.5/ 2.0 1.1/ 1.6 2-3 None
22/04 PM 14.4/14.9 3.9/ 4.4 2.6/ 3.1 5 Moderate
23/04 AM 12.6/13.1 2.1/ 2.6 2.2/ 2.7 4-5 Minor
Chatham - South side
MLLW Categories - Minor 9.0 ft, Moderate 10.5 ft, Major 11.5 ft
MHHW Categories - Minor 4.5 ft, Moderate 6.0 ft, Major 7.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 AM 4.6/ 5.1 0.1/ 0.6 0.5/ 1.0 2 None
21/04 PM 5.1/ 5.6 0.6/ 1.1 0.5/ 1.0 2 None
22/04 AM 4.7/ 5.2 0.2/ 0.8 0.9/ 1.4 2 None
22/05 PM 6.5/ 7.0 2.0/ 2.5 1.9/ 2.3 7-8 None
23/05 AM 5.5/ 6.0 1.0/ 1.5 1.9/ 2.3 5-7 None
Sandwich Harbor
MLLW Categories - Minor 12.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 1.7 ft, Moderate 3.7 ft, Major 4.7 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 10.5/11.0 0.2/ 0.7 0.8/ 1.3 3-4 None
21/03 PM 11.2/11.7 0.9/ 1.4 0.9/ 1.4 3 None
22/04 AM 10.2/10.7 -0.2/ 0.3 1.0/ 1.5 3-4 None
22/04 PM 12.4/12.9 2.1/ 2.6 2.5/ 3.0 4 Minor
23/04 AM 10.6/11.1 0.2/ 0.8 2.1/ 2.6 3 None
Nantucket Harbor
MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.0 ft
MHHW Categories - Minor 1.4 ft, Moderate 2.9 ft, Major 4.4 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 AM 3.7/ 4.2 0.1/ 0.6 0.2/ 0.8 4 None
21/04 PM 4.2/ 4.7 0.6/ 1.1 0.2/ 0.8 4 None
22/05 AM 3.7/ 4.2 0.1/ 0.6 0.5/ 1.0 4-5 None
22/05 PM 5.2/ 5.7 1.6/ 2.0 1.4/ 1.9 8 Minor
23/05 AM 4.5/ 5.0 0.9/ 1.4 1.6/ 2.0 5-7 None
&&
$$
MAZ020-023-RIZ006>008-210930-
/O.CON.KBOX.SU.Y.0011.000000T0000Z-200923T0000Z/
Southern Bristol MA-Dukes MA-Washington RI-Newport RI-
Block Island RI-
930 PM EDT Sun Sep 20 2020
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY...
* WHAT...Large breaking waves of 7 to 13 feet in the surf zone.
* WHERE...In Massachusetts, Dukes MA and Southern Bristol MA
Counties. In Rhode Island, Washington RI, Newport RI and Block
Island RI Counties.
* WHEN...Until 8 PM EDT Tuesday.
* IMPACTS...Dangerous swimming and surfing conditions and
localized beach erosion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
$$
MAZ015-016-210930-
/O.CON.KBOX.CF.S.0009.200921T1500Z-200921T2200Z/
Suffolk MA-Eastern Norfolk MA-
930 PM EDT Sun Sep 20 2020
* WHAT...Splash over and pockets of very minor coastal flooding
during the Monday afternoon high tide.
* WHERE...Eastern Norfolk MA and Suffolk MA Counties.
* WHEN...From Monday morning through Monday afternoon.
* IMPACTS...Some splashover on typical low-lying roadways.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
&&
&&
Time of high total tides are approximate to the nearest hour.
Boston Harbor
MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.4 ft, Moderate 4.4 ft, Major 5.9 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 11.1/11.6 1.0/ 1.5 0.2/ 0.7 3-4 None
21/03 PM 11.6/12.1 1.5/ 2.0 0.2/ 0.7 4 None
22/04 AM 10.8/11.3 0.7/ 1.1 0.5/ 1.0 3-4 None
22/04 PM 12.5/13.0 2.3/ 2.8 1.4/ 1.9 2 Minor
23/04 AM 10.7/11.2 0.6/ 1.1 1.1/ 1.6 2 None
Revere
MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.6 ft, Moderate 4.6 ft, Major 6.1 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 11.0/11.5 1.1/ 1.6 0.2/ 0.7 4-5 None
21/03 PM 11.6/12.1 1.7/ 2.2 0.2/ 0.7 5 None
22/04 AM 10.6/11.1 0.7/ 1.1 0.4/ 0.9 5 None
22/04 PM 12.3/12.8 2.3/ 2.8 1.3/ 1.8 5-6 Minor
23/04 AM 10.5/11.0 0.6/ 1.1 1.0/ 1.5 6 None
&&
$$574
WHUS41 KBOX 210729
CFWBOX
Coastal Hazard Message
National Weather Service Boston/Norton MA
329 AM EDT Mon Sep 21 2020
MAZ007-019-022-024-211530-
/O.NEW.KBOX.CF.Y.0012.200922T1800Z-200922T2200Z/
/O.CON.KBOX.SU.Y.0011.000000T0000Z-200923T0000Z/
/O.CON.KBOX.CF.S.0009.200921T1500Z-200921T2200Z/
Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Nantucket MA-
329 AM EDT Mon Sep 21 2020
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 2 PM TO 6 PM EDT
TUESDAY...
* WHAT...For the High Surf Advisory, large breaking waves of 8
to 22 feet in the surf zone with the worst of those conditions
on Tuesday. For the Coastal Flood Advisory, up to one foot of
inundation above ground level expected in low-lying areas near
shorelines and tidal waterways.
* WHERE...Eastern Essex MA, Eastern Plymouth MA, Barnstable MA
and Nantucket MA Counties.
* WHEN...For the High Surf Advisory, until 8 PM EDT Tuesday. For
the Coastal Flood Advisory, from 2 PM to 6 PM EDT Tuesday.
* IMPACTS...Splash over is expected during this afternoon's high
tide. Minor coastal flooding is expected during the late Tuesday
afternoon and early evening high tide, especially along the
north facing coastlines on Cape Cod and Nantucket.
In addition, high surf will result in dangerous swimming
and surfing conditions and localized beach erosion today
and especially Tuesday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
&&
Time of high total tides are approximate to the nearest hour.
Merrimack River near Newburyport MA
MLLW Categories - Minor 11.0 ft, Moderate 12.0 ft, Major 13.5 ft
MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 4.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 9.6/10.1 0.1/ 0.6 0.4/ 0.9 1 None
21/03 PM 10.3/10.8 0.8/ 1.3 0.4/ 0.9 1 None
22/04 AM 9.3/ 9.8 -0.2/ 0.2 0.5/ 1.0 1 None
22/04 PM 10.4/10.9 0.9/ 1.4 0.8/ 1.3 1 None
23/05 AM 8.9/ 9.4 -0.7/-0.2 0.5/ 1.0 1 None
23/05 PM 9.2/ 9.7 -0.3/ 0.2 -0.2/ 0.3 1 None
Gloucester Harbor
MLLW Categories - Minor 11.5 ft, Moderate 13.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.0 ft, Moderate 3.5 ft, Major 5.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 10.6/11.1 1.1/ 1.6 0.2/ 0.7 5-6 None
21/03 PM 11.1/11.6 1.6/ 2.0 0.2/ 0.7 7 Minor
22/04 AM 10.4/10.9 0.9/ 1.4 0.5/ 1.0 6-7 None
22/04 PM 12.1/12.6 2.6/ 3.1 1.5/ 2.0 10-13 Minor
23/04 AM 10.4/10.9 0.9/ 1.4 1.2/ 1.7 9-11 None
23/05 PM 10.5/11.0 1.0/ 1.5 0.2/ 0.8 4-6 None
Scituate MA
MLLW Categories - Minor 11.5 ft, Moderate 13.5 ft, Major 15.5 ft
MHHW Categories - Minor 1.8 ft, Moderate 3.8 ft, Major 5.8 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 10.7/11.2 1.0/ 1.5 0.2/ 0.8 5-6 None
21/03 PM 11.3/11.8 1.6/ 2.0 0.2/ 0.8 6 Minor
22/04 AM 10.5/11.0 0.8/ 1.3 0.6/ 1.1 6-7 None
22/04 PM 12.1/12.6 2.3/ 2.8 1.3/ 1.8 9-12 Minor
23/04 AM 10.4/10.9 0.7/ 1.1 1.1/ 1.6 8-9 None
23/05 PM 10.6/11.1 0.9/ 1.4 0.2/ 0.7 4-5 None
Wings Neck
MLLW Categories - Minor 6.5 ft, Moderate 9.0 ft, Major 11.5 ft
MHHW Categories - Minor 2.1 ft, Moderate 4.6 ft, Major 7.1 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/12 PM 5.4/ 5.9 1.0/ 1.5 0.2/ 0.7 2-3 None
22/12 AM 4.7/ 5.2 0.4/ 0.9 0.4/ 0.9 2 None
22/01 PM 5.2/ 5.7 0.9/ 1.4 0.4/ 0.9 3 None
23/01 AM 5.7/ 6.2 1.4/ 1.9 1.7/ 2.2 2-3 None
23/02 PM 5.2/ 5.7 0.8/ 1.3 0.6/ 1.1 1-2 None
Provincetown Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.9 ft, Moderate 3.9 ft, Major 4.9 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 11.4/11.9 1.3/ 1.8 0.4/ 0.9 2 None
21/03 PM 11.9/12.4 1.8/ 2.2 0.4/ 0.9 2-3 None
22/04 AM 11.1/11.6 1.0/ 1.5 0.7/ 1.1 3 None
22/04 PM 13.1/13.6 3.0/ 3.5 1.9/ 2.3 3 Minor
23/05 AM 11.6/12.1 1.5/ 2.0 1.7/ 2.2 7-9 None
23/05 PM 11.6/12.1 1.5/ 2.0 0.9/ 1.4 4-5 None
Chatham MA - East Coast
MLLW Categories - Minor 9.0 ft, Moderate 11.5 ft, Major 13.0 ft
MHHW Categories - Minor 1.3 ft, Moderate 3.8 ft, Major 5.3 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 AM 5.7/ 6.2 -2.0/-1.6 0.4/ 0.9 8 None
21/04 PM 6.2/ 6.7 -1.6/-1.1 0.4/ 0.9 8 None
22/04 AM 5.9/ 6.4 -1.9/-1.4 0.9/ 1.4 8-9 None
22/05 PM 7.6/ 8.1 -0.2/ 0.3 1.9/ 2.3 13-16 None
23/05 AM 6.4/ 6.9 -1.4/-0.9 1.6/ 2.0 8-10 None
23/06 PM 6.2/ 6.7 -1.6/-1.1 0.7/ 1.1 4-5 None
Buzzards Bay at Woods Hole
MLLW Categories - Minor 5.5 ft, Moderate 7.0 ft, Major 8.5 ft
MHHW Categories - Minor 3.5 ft, Moderate 5.0 ft, Major 6.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/12 PM 3.5/ 4.0 1.5/ 2.0 0.4/ 0.9 3 None
22/12 AM 2.8/ 3.4 0.9/ 1.4 0.4/ 0.9 3 None
22/01 PM 4.0/ 4.5 2.0/ 2.5 1.1/ 1.6 3 None
23/01 AM 4.6/ 5.1 2.6/ 3.1 2.2/ 2.7 2-3 None
23/02 PM 3.7/ 4.2 1.7/ 2.2 1.0/ 1.5 1-2 None
Dennis - Sesuit Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.5 ft, Moderate 4.0 ft, Major 5.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 11.9/12.4 1.4/ 1.9 0.4/ 0.9 2-3 None
21/03 PM 12.5/13.0 2.0/ 2.5 0.4/ 0.9 3 None
22/04 AM 11.9/12.4 1.4/ 1.9 1.0/ 1.5 3 None
22/04 PM 13.7/14.2 3.2/ 3.7 1.9/ 2.3 4-5 Minor
23/04 AM 12.5/13.0 2.0/ 2.5 2.2/ 2.7 4-5 None
23/05 PM 12.3/12.8 1.8/ 2.2 1.0/ 1.5 2 None
Chatham - South side
MLLW Categories - Minor 9.0 ft, Moderate 10.5 ft, Major 11.5 ft
MHHW Categories - Minor 4.5 ft, Moderate 6.0 ft, Major 7.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 AM 4.5/ 5.0 0.0/ 0.5 0.4/ 0.9 3 None
21/04 PM 5.0/ 5.5 0.5/ 1.0 0.4/ 0.9 3 None
22/04 AM 4.7/ 5.2 0.2/ 0.7 0.8/ 1.3 3 None
22/05 PM 6.4/ 6.9 1.9/ 2.3 1.8/ 2.2 3-4 None
23/05 AM 5.4/ 5.9 0.9/ 1.4 1.8/ 2.2 5-7 None
23/06 PM 5.1/ 5.6 0.6/ 1.1 0.6/ 1.1 3-4 None
Sandwich Harbor
MLLW Categories - Minor 12.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 1.7 ft, Moderate 3.7 ft, Major 4.7 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 10.1/10.6 -0.2/ 0.2 0.4/ 0.9 3-4 None
21/03 PM 10.7/11.2 0.4/ 0.9 0.4/ 0.9 3-4 None
22/04 AM 10.2/10.7 -0.2/ 0.3 1.0/ 1.5 4 None
22/04 PM 11.8/12.3 1.5/ 2.0 1.9/ 2.3 7-8 Minor
23/04 AM 10.6/11.1 0.2/ 0.8 2.1/ 2.6 3 None
23/05 PM 10.6/11.1 0.2/ 0.8 1.1/ 1.6 1-2 None
Nantucket Harbor
MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.0 ft
MHHW Categories - Minor 1.4 ft, Moderate 2.9 ft, Major 4.4 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 AM 3.7/ 4.2 0.1/ 0.6 0.2/ 0.8 4 None
21/04 PM 4.2/ 4.7 0.6/ 1.1 0.2/ 0.8 4 None
22/05 AM 3.7/ 4.2 0.1/ 0.6 0.5/ 1.0 5 None
22/05 PM 5.2/ 5.7 1.6/ 2.0 1.4/ 1.9 7 Minor
23/05 AM 4.5/ 5.0 0.9/ 1.4 1.6/ 2.0 5-7 None
23/05 PM 3.7/ 4.2 0.2/ 0.7 0.2/ 0.7 3-4 None
&&
$$
MAZ015-016-211530-
/O.NEW.KBOX.CF.Y.0012.200922T1800Z-200922T2200Z/
/O.CON.KBOX.CF.S.0009.200921T1500Z-200921T2200Z/
Suffolk MA-Eastern Norfolk MA-
329 AM EDT Mon Sep 21 2020
...COASTAL FLOOD ADVISORY IN EFFECT FROM 2 PM TO 6 PM EDT
TUESDAY...
* WHAT...For the Coastal Flood Advisory, up to one foot of
inundation above ground level expected in low-lying areas near
shorelines and tidal waterways.
* WHERE...Suffolk MA and Eastern Norfolk MA Counties.
* WHEN...Splash over is possible during this afternoon's high
tide. For the Coastal Flood Advisory on Tuesday minor coastal
flooding is expected during the late Tuesday afternoon high tide cycle.
* IMPACTS...Minor coastal flooding occurs along Morrissey
Boulevard in Boston during the late Tuesday afternoon high tide cycle.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
&&
Time of high total tides are approximate to the nearest hour.
Boston Harbor
MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.4 ft, Moderate 4.4 ft, Major 5.9 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 11.2/11.7 1.1/ 1.6 0.2/ 0.8 2 None
21/03 PM 11.7/12.2 1.6/ 2.0 0.2/ 0.8 2 None
22/04 AM 10.9/11.4 0.8/ 1.3 0.6/ 1.1 2 None
22/04 PM 12.6/13.1 2.5/ 3.0 1.5/ 2.0 2 Minor
23/04 AM 10.8/11.3 0.7/ 1.1 1.2/ 1.7 2 None
23/05 PM 10.9/11.4 0.8/ 1.3 0.2/ 0.8 1-2 None
Revere
MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.6 ft, Moderate 4.6 ft, Major 6.1 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 11.2/11.7 1.3/ 1.8 0.4/ 0.9 4-5 None
21/03 PM 11.8/12.3 1.9/ 2.3 0.4/ 0.9 5-6 None
22/04 AM 10.8/11.3 0.9/ 1.4 0.6/ 1.1 5 None
22/04 PM 12.5/13.0 2.6/ 3.1 1.5/ 2.0 7-9 Minor
23/04 AM 10.7/11.2 0.8/ 1.3 1.2/ 1.7 6 None
23/05 PM 10.9/11.4 1.0/ 1.5 0.2/ 0.8 3 None
&&
$$
MAZ023-211530-
/O.NEW.KBOX.CF.Y.0012.200922T1800Z-200922T2200Z/
/O.CON.KBOX.SU.Y.0011.000000T0000Z-200923T0000Z/
Dukes MA-
329 AM EDT Mon Sep 21 2020
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 2 PM TO 6 PM EDT
TUESDAY...
* WHAT...For the High Surf Advisory, large breaking waves of 8
to 16 feet in the surf zone with the worst of the conditions
on Tuesday. For the Coastal Flood Advisory, splashover and minor
coastal flooding is expected during the late Tuesday afternoon
and early evening high tide.
* WHERE...Dukes MA County.
* WHEN...For the High Surf Advisory, until 8 PM EDT Tuesday. For
the Coastal Flood Advisory, from 2 PM to 6 PM EDT Tuesday.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected. Dangerous swimming and
surfing conditions and localized beach erosion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
&&
Time of high total tides are approximate to the nearest hour.
Vineyard Haven
MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.5 ft
MHHW Categories - Minor 3.0 ft, Moderate 4.5 ft, Major 6.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 AM 2.2/ 2.7 0.2/ 0.7 0.2/ 0.8 3 None
21/04 PM 2.3/ 2.8 0.4/ 0.9 0.2/ 0.8 3 None
22/04 AM 2.2/ 2.7 0.2/ 0.8 0.6/ 1.1 3 None
22/05 PM 3.5/ 4.0 1.5/ 2.0 1.6/ 2.0 3 None
23/04 AM 3.7/ 4.2 1.7/ 2.2 2.2/ 2.7 2 None
23/05 PM 2.5/ 3.0 0.5/ 1.0 0.7/ 1.1 1 None
&&
$$
MAZ020-RIZ006>008-211530-
/O.CON.KBOX.SU.Y.0011.000000T0000Z-200923T0000Z/
Southern Bristol MA-Washington RI-Newport RI-Block Island RI-
329 AM EDT Mon Sep 21 2020
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY...
* WHAT...Large breaking waves of 7 to 13 feet in the surf zone.
* WHERE...In Massachusetts, Southern Bristol MA County. In Rhode
Island, Washington RI, Newport RI and Block Island RI Counties.
* WHEN...Until 8 PM EDT Tuesday.
* IMPACTS...Dangerous swimming and surfing conditions and
localized beach erosion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
$$
Frank008
WHUS41 KBOX 211421
CFWBOX
Coastal Hazard Message
National Weather Service Boston/Norton MA
1021 AM EDT Mon Sep 21 2020
MAZ007-019-022-024-212230-
/O.CON.KBOX.SU.Y.0011.000000T0000Z-200923T0000Z/
/O.CON.KBOX.CF.Y.0012.200922T1800Z-200922T2200Z/
/O.CON.KBOX.CF.S.0009.200921T1500Z-200921T2200Z/
Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Nantucket MA-
1021 AM EDT Mon Sep 21 2020
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 2 PM TO 6 PM EDT
TUESDAY...
* WHAT...For the High Surf Advisory, large breaking waves of 8
to 22 feet in the surf zone. For the Coastal Flood Advisory,
up to one foot of inundation expected in low-lying areas
near shorelines and tidal waterways.
* WHERE...Eastern Plymouth MA, Eastern Essex MA, Barnstable MA
and Nantucket MA Counties.
* WHEN...For the High Surf Advisory, until 8 PM EDT Tuesday. For
the Coastal Flood Advisory, from 2 PM to 6 PM EDT Tuesday. For
the, until 6 PM EDT this evening.
* IMPACTS...Splash over is expected during this afternoon's high
tide. Minor coastal flooding is expected during the late Tuesday
afternoon and early evening high tide, especially along the
north facing coastlines on Cape Cod and Nantucket.
In addition, high surf will result in dangerous swimming
and surfing conditions and localized beach erosion today
and especially Tuesday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
&&
Time of high total tides are approximate to the nearest hour.
Merrimack River near Newburyport MA
MLLW Categories - Minor 11.0 ft, Moderate 12.0 ft, Major 13.5 ft
MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 4.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 10.3/10.8 0.8/ 1.3 0.4/ 0.9 1 None
22/04 AM 9.3/ 9.8 -0.2/ 0.2 0.5/ 1.0 1 None
22/04 PM 10.4/10.9 0.9/ 1.4 0.8/ 1.3 1 None
23/05 AM 8.9/ 9.4 -0.7/-0.2 0.5/ 1.0 1 None
23/05 PM 9.2/ 9.7 -0.3/ 0.2 -0.2/ 0.3 1 None
Gloucester Harbor
MLLW Categories - Minor 11.5 ft, Moderate 13.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.0 ft, Moderate 3.5 ft, Major 5.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 11.1/11.6 1.6/ 2.0 0.2/ 0.7 7 Minor
22/04 AM 10.4/10.9 0.9/ 1.4 0.5/ 1.0 6-7 None
22/04 PM 12.1/12.6 2.6/ 3.1 1.5/ 2.0 10-13 Minor
23/04 AM 10.4/10.9 0.9/ 1.4 1.2/ 1.7 10-12 None
23/05 PM 10.5/11.0 1.0/ 1.5 0.2/ 0.8 5-7 None
Scituate MA
MLLW Categories - Minor 11.5 ft, Moderate 13.5 ft, Major 15.5 ft
MHHW Categories - Minor 1.8 ft, Moderate 3.8 ft, Major 5.8 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 11.3/11.8 1.6/ 2.0 0.2/ 0.8 6 Minor
22/04 AM 10.5/11.0 0.8/ 1.3 0.6/ 1.1 6-7 None
22/04 PM 12.1/12.6 2.3/ 2.8 1.3/ 1.8 9-12 Minor
23/04 AM 10.4/10.9 0.7/ 1.1 1.1/ 1.6 9-10 None
23/05 PM 10.6/11.1 0.9/ 1.4 0.2/ 0.7 5-6 None
Wings Neck
MLLW Categories - Minor 6.5 ft, Moderate 9.0 ft, Major 11.5 ft
MHHW Categories - Minor 2.1 ft, Moderate 4.6 ft, Major 7.1 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/12 PM 5.4/ 5.9 1.0/ 1.5 0.2/ 0.7 2-3 None
22/12 AM 4.7/ 5.2 0.4/ 0.9 0.4/ 0.9 2 None
22/01 PM 5.2/ 5.7 0.9/ 1.4 0.4/ 0.9 3 None
23/01 AM 5.7/ 6.2 1.4/ 1.9 1.7/ 2.2 2-3 None
23/02 PM 5.2/ 5.7 0.8/ 1.3 0.6/ 1.1 1-2 None
24/02 AM 3.7/ 4.2 -0.7/-0.2 -0.2/ 0.3 1 None
Provincetown Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.9 ft, Moderate 3.9 ft, Major 4.9 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 11.9/12.4 1.8/ 2.2 0.4/ 0.9 2-3 None
22/04 AM 11.1/11.6 1.0/ 1.5 0.7/ 1.1 3 None
22/04 PM 13.1/13.6 3.0/ 3.5 1.9/ 2.3 3 Minor
23/05 AM 11.6/12.1 1.5/ 2.0 1.7/ 2.2 6-8 None
23/05 PM 11.6/12.1 1.5/ 2.0 0.9/ 1.4 4-5 None
Chatham MA - East Coast
MLLW Categories - Minor 9.0 ft, Moderate 11.5 ft, Major 13.0 ft
MHHW Categories - Minor 1.3 ft, Moderate 3.8 ft, Major 5.3 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 AM 5.7/ 6.2 -2.0/-1.6 0.4/ 0.9 8 None
21/04 PM 6.2/ 6.7 -1.6/-1.1 0.4/ 0.9 8 None
22/04 AM 5.9/ 6.4 -1.9/-1.4 0.9/ 1.4 8-9 None
22/05 PM 7.6/ 8.1 -0.2/ 0.3 1.9/ 2.3 13-16 None
23/05 AM 6.4/ 6.9 -1.4/-0.9 1.6/ 2.0 9-11 None
23/06 PM 6.2/ 6.7 -1.6/-1.1 0.7/ 1.1 5-6 None
Buzzards Bay at Woods Hole
MLLW Categories - Minor 5.5 ft, Moderate 7.0 ft, Major 8.5 ft
MHHW Categories - Minor 3.5 ft, Moderate 5.0 ft, Major 6.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/12 PM 3.5/ 4.0 1.5/ 2.0 0.4/ 0.9 3 None
22/12 AM 2.8/ 3.4 0.9/ 1.4 0.4/ 0.9 3 None
22/01 PM 4.0/ 4.5 2.0/ 2.5 1.1/ 1.6 3 None
23/01 AM 4.6/ 5.1 2.6/ 3.1 2.2/ 2.7 3 None
23/02 PM 3.7/ 4.2 1.7/ 2.2 1.0/ 1.5 2 None
24/02 AM 2.6/ 3.1 0.6/ 1.1 0.4/ 0.9 1-2 None
Dennis - Sesuit Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.5 ft, Moderate 4.0 ft, Major 5.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 12.5/13.0 2.0/ 2.5 0.4/ 0.9 3 None
22/04 AM 11.9/12.4 1.4/ 1.9 1.0/ 1.5 3 None
22/04 PM 13.7/14.2 3.2/ 3.7 1.9/ 2.3 4-5 Minor
23/04 AM 12.5/13.0 2.0/ 2.5 2.2/ 2.7 5 None
23/05 PM 12.3/12.8 1.8/ 2.2 1.0/ 1.5 2-3 None
Chatham - South side
MLLW Categories - Minor 9.0 ft, Moderate 10.5 ft, Major 11.5 ft
MHHW Categories - Minor 4.5 ft, Moderate 6.0 ft, Major 7.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 AM 4.5/ 5.0 0.0/ 0.5 0.4/ 0.9 3 None
21/04 PM 5.0/ 5.5 0.5/ 1.0 0.4/ 0.9 3 None
22/04 AM 4.7/ 5.2 0.2/ 0.7 0.8/ 1.3 3 None
22/05 PM 6.4/ 6.9 1.9/ 2.3 1.8/ 2.2 3-4 None
23/05 AM 5.4/ 5.9 0.9/ 1.4 1.8/ 2.2 5-7 None
23/06 PM 5.1/ 5.6 0.6/ 1.1 0.6/ 1.1 3-4 None
Sandwich Harbor
MLLW Categories - Minor 12.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 1.7 ft, Moderate 3.7 ft, Major 4.7 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 10.7/11.2 0.4/ 0.9 0.4/ 0.9 3-4 None
22/04 AM 10.2/10.7 -0.2/ 0.3 1.0/ 1.5 4 None
22/04 PM 11.8/12.3 1.5/ 2.0 1.9/ 2.3 7-8 Minor
23/04 AM 10.6/11.1 0.2/ 0.8 2.1/ 2.6 4-5 None
23/05 PM 10.6/11.1 0.2/ 0.8 1.1/ 1.6 2-3 None
Nantucket Harbor
MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.0 ft
MHHW Categories - Minor 1.4 ft, Moderate 2.9 ft, Major 4.4 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 AM 3.7/ 4.2 0.1/ 0.6 0.2/ 0.8 4 None
21/04 PM 4.2/ 4.7 0.6/ 1.1 0.2/ 0.8 4 None
22/05 AM 3.7/ 4.2 0.1/ 0.6 0.5/ 1.0 5 None
22/05 PM 5.2/ 5.7 1.6/ 2.0 1.4/ 1.9 7 Minor
23/05 AM 4.5/ 5.0 0.9/ 1.4 1.6/ 2.0 6-7 None
23/05 PM 3.7/ 4.2 0.2/ 0.7 0.2/ 0.7 3-4 None
&&
$$
MAZ015-016-212230-
/O.CON.KBOX.CF.Y.0012.200922T1800Z-200922T2200Z/
/O.CON.KBOX.CF.S.0009.200921T1500Z-200921T2200Z/
Suffolk MA-Eastern Norfolk MA-
1021 AM EDT Mon Sep 21 2020
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 2 PM TO 6 PM EDT
TUESDAY...
* WHAT...For the Coastal Flood Advisory, up to one foot of
inundation above ground level expected in low-lying areas near
shorelines and tidal waterways.
* WHERE...Eastern Norfolk MA and Suffolk MA Counties.
* WHEN...For the Coastal Flood Advisory, from 2 PM to 6 PM EDT
Tuesday. For the, until 6 PM EDT this evening.
* IMPACTS...Minor coastal flooding occurs along Morrissey
Boulevard in Boston.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
&&
Time of high total tides are approximate to the nearest hour.
Boston Harbor
MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.4 ft, Moderate 4.4 ft, Major 5.9 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 11.7/12.2 1.6/ 2.0 0.2/ 0.8 2 None
22/04 AM 10.9/11.4 0.8/ 1.3 0.6/ 1.1 2 None
22/04 PM 12.6/13.1 2.5/ 3.0 1.5/ 2.0 2 Minor
23/04 AM 10.8/11.3 0.7/ 1.1 1.2/ 1.7 2 None
23/05 PM 10.9/11.4 0.8/ 1.3 0.2/ 0.8 1-2 None
Revere
MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.6 ft, Moderate 4.6 ft, Major 6.1 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 11.8/12.3 1.9/ 2.3 0.4/ 0.9 5-6 None
22/04 AM 10.8/11.3 0.9/ 1.4 0.6/ 1.1 5 None
22/04 PM 12.5/13.0 2.6/ 3.1 1.5/ 2.0 7-9 Minor
23/04 AM 10.7/11.2 0.8/ 1.3 1.2/ 1.7 7 None
23/05 PM 10.9/11.4 1.0/ 1.5 0.2/ 0.8 4 None
&&
$$
MAZ023-212230-
/O.CON.KBOX.SU.Y.0011.000000T0000Z-200923T0000Z/
/O.CON.KBOX.CF.Y.0012.200922T1800Z-200922T2200Z/
Dukes MA-
1021 AM EDT Mon Sep 21 2020
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 2 PM TO 6 PM EDT
TUESDAY...
* WHAT...For the High Surf Advisory, large breaking waves of 8
to 16 feet in the surf zone with the worst of the conditions
on Tuesday. For the Coastal Flood Advisory, splashover and minor
coastal flooding is expected during the late Tuesday afternoon
and early evening high tide.
* WHERE...Dukes MA County.
* WHEN...For the High Surf Advisory, until 8 PM EDT Tuesday. For
the Coastal Flood Advisory, from 2 PM to 6 PM EDT Tuesday.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected. Dangerous swimming and
surfing conditions and localized beach erosion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
&&
Time of high total tides are approximate to the nearest hour.
Vineyard Haven
MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.5 ft
MHHW Categories - Minor 3.0 ft, Moderate 4.5 ft, Major 6.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 PM 2.3/ 2.8 0.4/ 0.9 0.2/ 0.8 3 None
22/04 AM 2.2/ 2.7 0.2/ 0.8 0.6/ 1.1 3 None
22/05 PM 3.5/ 4.0 1.5/ 2.0 1.6/ 2.0 3 None
23/04 AM 3.7/ 4.2 1.7/ 2.2 2.2/ 2.7 3 None
23/05 PM 2.5/ 3.0 0.5/ 1.0 0.7/ 1.1 2 None
&&
$$
MAZ020-RIZ006>008-212230-
/O.CON.KBOX.SU.Y.0011.000000T0000Z-200923T0000Z/
Southern Bristol MA-Washington RI-Newport RI-Block Island RI-
1021 AM EDT Mon Sep 21 2020
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY...
* WHAT...Large breaking waves of 7 to 13 feet in the surf zone.
* WHERE...In Massachusetts, Southern Bristol MA County. In Rhode
Island, Washington RI, Newport RI and Block Island RI Counties.
* WHEN...Until 8 PM EDT Tuesday.
* IMPACTS...Dangerous swimming and surfing conditions and
localized beach erosion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
$$670
WHUS41 KBOX 211947
CFWBOX
Coastal Hazard Message
National Weather Service Boston/Norton MA
347 PM EDT Mon Sep 21 2020
MAZ007-019-022-024-220800-
/O.EXT.KBOX.SU.Y.0011.000000T0000Z-200923T1000Z/
/O.CON.KBOX.CF.Y.0012.200922T1800Z-200922T2200Z/
/O.CON.KBOX.CF.S.0009.000000T0000Z-200921T2200Z/
Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Nantucket MA-
347 PM EDT Mon Sep 21 2020
...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 AM EDT WEDNESDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 2 PM TO 6 PM EDT
TUESDAY...
* WHAT...For the High Surf Advisory, large breaking waves of 8 to
22 feet in the surf zone.For the Coastal Flood Advisory, one to
two feet of inundation above ground level expected in low-lying
areas near shorelines and tidal waterways.
* WHERE...Eastern Plymouth MA, Eastern Essex MA, Barnstable MA
and Nantucket MA Counties.
* WHEN...For the Coastal Flood Advisory, from 2 PM to 6 PM EDT
Tuesday. For the High Surf Advisory, until 6 AM EDT Wednesday.
* IMPACTS...Minor coastal flooding is expected along the North
Shore from Gloucester to Newburyport. Wave action will likely
cause some washover onto coastal roads around the time of high
tide. Minor coastal flooding begins on Easy Street in
Nantucket. Expect minor coastal flooding of some low-lying
roadways. Minor coastal flooding occurs in Provincetown, in
the vicinity of Race Point Road and Provincetown Airport. In
Truro backwater flooding occurs along the Pamet River.
Dangerous swimming and surfing conditions and localized beach
erosion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
&&
Time of high total tides are approximate to the nearest hour.
Merrimack River near Newburyport MA
MLLW Categories - Minor 11.0 ft, Moderate 12.0 ft, Major 13.5 ft
MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 4.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 10.3/10.8 0.8/ 1.3 0.4/ 0.9 1 None
22/04 AM 9.3/ 9.8 -0.2/ 0.2 0.5/ 1.0 1 None
22/04 PM 10.4/10.9 0.9/ 1.4 0.8/ 1.3 1 None
23/05 AM 8.9/ 9.4 -0.7/-0.2 0.5/ 1.0 1 None
23/05 PM 9.2/ 9.7 -0.3/ 0.2 -0.2/ 0.3 1 None
Gloucester Harbor
MLLW Categories - Minor 11.5 ft, Moderate 13.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.0 ft, Moderate 3.5 ft, Major 5.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 11.1/11.6 1.6/ 2.0 0.2/ 0.7 7 Minor
22/04 AM 10.4/10.9 0.9/ 1.4 0.5/ 1.0 6-7 None
22/04 PM 12.1/12.6 2.6/ 3.1 1.5/ 2.0 10-13 Minor
23/04 AM 10.4/10.9 0.9/ 1.4 1.2/ 1.7 10-12 None
23/05 PM 10.5/11.0 1.0/ 1.5 0.2/ 0.8 5-7 None
Scituate MA
MLLW Categories - Minor 11.5 ft, Moderate 13.5 ft, Major 15.5 ft
MHHW Categories - Minor 1.8 ft, Moderate 3.8 ft, Major 5.8 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 11.3/11.8 1.6/ 2.0 0.2/ 0.8 6 Minor
22/04 AM 10.5/11.0 0.8/ 1.3 0.6/ 1.1 6-7 None
22/04 PM 12.1/12.6 2.3/ 2.8 1.3/ 1.8 9-12 Minor
23/04 AM 10.4/10.9 0.7/ 1.1 1.1/ 1.6 9-10 None
23/05 PM 10.6/11.1 0.9/ 1.4 0.2/ 0.7 5-6 None
Wings Neck
MLLW Categories - Minor 6.5 ft, Moderate 9.0 ft, Major 11.5 ft
MHHW Categories - Minor 2.1 ft, Moderate 4.6 ft, Major 7.1 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/12 PM 5.4/ 5.9 1.0/ 1.5 0.2/ 0.7 2-3 None
22/12 AM 4.7/ 5.2 0.4/ 0.9 0.4/ 0.9 2 None
22/01 PM 5.2/ 5.7 0.9/ 1.4 0.4/ 0.9 3 None
23/01 AM 5.7/ 6.2 1.4/ 1.9 1.7/ 2.2 2-3 None
23/02 PM 5.2/ 5.7 0.8/ 1.3 0.6/ 1.1 1-2 None
24/02 AM 3.7/ 4.2 -0.7/-0.2 -0.2/ 0.3 1 None
Provincetown Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.9 ft, Moderate 3.9 ft, Major 4.9 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 11.9/12.4 1.8/ 2.2 0.4/ 0.9 2-3 None
22/04 AM 11.1/11.6 1.0/ 1.5 0.7/ 1.1 3 None
22/04 PM 13.1/13.6 3.0/ 3.5 1.9/ 2.3 3 Minor
23/05 AM 11.6/12.1 1.5/ 2.0 1.7/ 2.2 6-8 None
23/05 PM 11.6/12.1 1.5/ 2.0 0.9/ 1.4 4-5 None
Chatham MA - East Coast
MLLW Categories - Minor 9.0 ft, Moderate 11.5 ft, Major 13.0 ft
MHHW Categories - Minor 1.3 ft, Moderate 3.8 ft, Major 5.3 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 AM 5.7/ 6.2 -2.0/-1.6 0.4/ 0.9 8 None
21/04 PM 6.2/ 6.7 -1.6/-1.1 0.4/ 0.9 8 None
22/04 AM 5.9/ 6.4 -1.9/-1.4 0.9/ 1.4 8-9 None
22/05 PM 7.6/ 8.1 -0.2/ 0.3 1.9/ 2.3 13-16 None
23/05 AM 6.4/ 6.9 -1.4/-0.9 1.6/ 2.0 9-11 None
23/06 PM 6.2/ 6.7 -1.6/-1.1 0.7/ 1.1 5-6 None
Buzzards Bay at Woods Hole
MLLW Categories - Minor 5.5 ft, Moderate 7.0 ft, Major 8.5 ft
MHHW Categories - Minor 3.5 ft, Moderate 5.0 ft, Major 6.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/12 PM 3.5/ 4.0 1.5/ 2.0 0.4/ 0.9 3 None
22/12 AM 2.8/ 3.4 0.9/ 1.4 0.4/ 0.9 3 None
22/01 PM 4.0/ 4.5 2.0/ 2.5 1.1/ 1.6 3 None
23/01 AM 4.6/ 5.1 2.6/ 3.1 2.2/ 2.7 3 None
23/02 PM 3.7/ 4.2 1.7/ 2.2 1.0/ 1.5 2 None
24/02 AM 2.6/ 3.1 0.6/ 1.1 0.4/ 0.9 1-2 None
Dennis - Sesuit Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.5 ft, Moderate 4.0 ft, Major 5.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 12.5/13.0 2.0/ 2.5 0.4/ 0.9 3 None
22/04 AM 11.9/12.4 1.4/ 1.9 1.0/ 1.5 3 None
22/04 PM 13.7/14.2 3.2/ 3.7 1.9/ 2.3 4-5 Minor
23/04 AM 12.5/13.0 2.0/ 2.5 2.2/ 2.7 5 None
23/05 PM 12.3/12.8 1.8/ 2.2 1.0/ 1.5 2-3 None
Chatham - South side
MLLW Categories - Minor 9.0 ft, Moderate 10.5 ft, Major 11.5 ft
MHHW Categories - Minor 4.5 ft, Moderate 6.0 ft, Major 7.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 AM 4.5/ 5.0 0.0/ 0.5 0.4/ 0.9 3 None
21/04 PM 5.0/ 5.5 0.5/ 1.0 0.4/ 0.9 3 None
22/04 AM 4.7/ 5.2 0.2/ 0.7 0.8/ 1.3 3 None
22/05 PM 6.4/ 6.9 1.9/ 2.3 1.8/ 2.2 3-4 None
23/05 AM 5.4/ 5.9 0.9/ 1.4 1.8/ 2.2 5-7 None
23/06 PM 5.1/ 5.6 0.6/ 1.1 0.6/ 1.1 3-4 None
Sandwich Harbor
MLLW Categories - Minor 12.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 1.7 ft, Moderate 3.7 ft, Major 4.7 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 10.7/11.2 0.4/ 0.9 0.4/ 0.9 3-4 None
22/04 AM 10.2/10.7 -0.2/ 0.3 1.0/ 1.5 4 None
22/04 PM 11.8/12.3 1.5/ 2.0 1.9/ 2.3 7-8 Minor
23/04 AM 10.6/11.1 0.2/ 0.8 2.1/ 2.6 4-5 None
23/05 PM 10.6/11.1 0.2/ 0.8 1.1/ 1.6 2-3 None
Nantucket Harbor
MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.0 ft
MHHW Categories - Minor 1.4 ft, Moderate 2.9 ft, Major 4.4 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 AM 3.7/ 4.2 0.1/ 0.6 0.2/ 0.8 4 None
21/04 PM 4.2/ 4.7 0.6/ 1.1 0.2/ 0.8 4 None
22/05 AM 3.7/ 4.2 0.1/ 0.6 0.5/ 1.0 5 None
22/05 PM 5.2/ 5.7 1.6/ 2.0 1.4/ 1.9 7 Minor
23/05 AM 4.5/ 5.0 0.9/ 1.4 1.6/ 2.0 6-7 None
23/05 PM 3.7/ 4.2 0.2/ 0.7 0.2/ 0.7 3-4 None
&&
$$
MAZ023-220800-
/O.EXT.KBOX.SU.Y.0011.000000T0000Z-200923T1000Z/
/O.CON.KBOX.CF.Y.0012.200922T1800Z-200922T2200Z/
Dukes MA-
347 PM EDT Mon Sep 21 2020
...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 AM EDT WEDNESDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 2 PM TO 6 PM EDT
TUESDAY...
* WHAT...For the High Surf Advisory, large breaking waves of 6
to 16 feet in the surf zone with the worst of the conditions
on Tuesday. For the Coastal Flood Advisory, splashover and minor
coastal flooding is expected during the late Tuesday afternoon
and early evening high tide.
* WHERE...Dukes MA County.
* WHEN...For the High Surf Advisory, until 6 AM EDT Wednesday.
For the Coastal Flood Advisory, from 2 PM to 6 PM EDT Tuesday.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected. Dangerous swimming and
surfing conditions and localized beach erosion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
&&
Time of high total tides are approximate to the nearest hour.
Vineyard Haven
MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.5 ft
MHHW Categories - Minor 3.0 ft, Moderate 4.5 ft, Major 6.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/04 PM 2.3/ 2.8 0.4/ 0.9 0.2/ 0.8 3 None
22/04 AM 2.2/ 2.7 0.2/ 0.8 0.6/ 1.1 3 None
22/05 PM 3.5/ 4.0 1.5/ 2.0 1.6/ 2.0 3 None
23/04 AM 3.7/ 4.2 1.7/ 2.2 2.2/ 2.7 3 None
23/05 PM 2.5/ 3.0 0.5/ 1.0 0.7/ 1.1 2 None
&&
$$
MAZ020-RIZ006>008-220800-
/O.EXT.KBOX.SU.Y.0011.000000T0000Z-200923T1000Z/
Southern Bristol MA-Washington RI-Newport RI-Block Island RI-
347 PM EDT Mon Sep 21 2020
...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 AM EDT WEDNESDAY...
* WHAT...Large breaking waves of 5 to 13 feet in the surf zone.
* WHERE...In Massachusetts, Southern Bristol MA County. In Rhode
Island, Washington RI, Newport RI and Block Island RI Counties.
* WHEN...Until 6 AM EDT Wednesday.
* IMPACTS...Dangerous swimming and surfing conditions and
localized beach erosion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
$$
MAZ015-016-220800-
/O.CON.KBOX.CF.Y.0012.200922T1800Z-200922T2200Z/
/O.CON.KBOX.CF.S.0009.000000T0000Z-200921T2200Z/
Suffolk MA-Eastern Norfolk MA-
347 PM EDT Mon Sep 21 2020
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 2 PM TO 6 PM EDT
TUESDAY...
* WHAT...For the Coastal Flood Advisory, up to one foot of
inundation above ground level expected in low-lying areas near
shorelines and tidal waterways.
* WHERE...Eastern Norfolk MA and Suffolk MA Counties.
* WHEN...For the Coastal Flood Advisory, from 2 PM to 6 PM EDT
Tuesday.
* IMPACTS...Minor coastal flooding occurs along Morrissey
Boulevard in Boston.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
&&
Time of high total tides are approximate to the nearest hour.
Boston Harbor
MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.4 ft, Moderate 4.4 ft, Major 5.9 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 11.7/12.2 1.6/ 2.0 0.2/ 0.8 2 None
22/04 AM 10.9/11.4 0.8/ 1.3 0.6/ 1.1 2 None
22/04 PM 12.6/13.1 2.5/ 3.0 1.5/ 2.0 2 Minor
23/04 AM 10.8/11.3 0.7/ 1.1 1.2/ 1.7 2 None
23/05 PM 10.9/11.4 0.8/ 1.3 0.2/ 0.8 1-2 None
Revere
MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.6 ft, Moderate 4.6 ft, Major 6.1 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
21/03 PM 11.8/12.3 1.9/ 2.3 0.4/ 0.9 5-6 None
22/04 AM 10.8/11.3 0.9/ 1.4 0.6/ 1.1 5 None
22/04 PM 12.5/13.0 2.6/ 3.1 1.5/ 2.0 7-9 Minor
23/04 AM 10.7/11.2 0.8/ 1.3 1.2/ 1.7 7 None
23/05 PM 10.9/11.4 1.0/ 1.5 0.2/ 0.8 4 None
&&
$$
BLWhat forecasters said that day
The local office's own words before this coastal flood statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Boston/Norton, MA wrote its last area forecast discussion before this coastal flood statement went out at Sep 20, 3:18 PM EDT, 19 minutes earlier.
Area forecast discussion, Sep 20, 3:18 PM EDT, 19 minutes before
Area Forecast Discussion
National Weather Service Boston/Norton MA
318 PM EDT Sun Sep 20 2020
.SYNOPSIS...
Cooler than normal and dry weather persists into early this
week. Hurricane Teddy will pass well east of our coastline on
Tuesday as it heads into the Canadian Maritimes. While we will
remain dry, it will bring a period of windy conditions along the
coast, especially Cape Cod and Nantucket. Minor coastal
flooding and some beach erosion may also occur during the
Tuesday afternoon high tide. Otherwise, the prolonged period of
dry weather continues through the upcoming week. Temperatures
will moderate to above normal levels by Wednesday, then cool a
little over the weekend.
&&
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
145 PM Update...
Have increased cloud cover across the interior a bit from the
previous update. A cumulus field has developed due to the -25 to
-20 degree Celsius 500 hPa cold pool aloft in combination with
diurnal heating as a trough swings through. This has been
pretty poorly resolved by the latest guidance other than some
hints by the NAMNest and GLAMP, so have pushed the sky cover
towards these models. Otherwise the forecast remains on track.
1030 AM Update...
Increased sky cover from CT to Cape Cod and the Islands per
satellite observations. This is a result of trough digging
through southern New England and ocean-effect stratocumulus.
High pressure will continue to dominate as it nudges in from
Quebec. Rest of the forecast remains on track.
725 AM update...
* Freeze/Frost Advisories will likely be needed again for
tonight...
* Some splashover possible along the MA east coast at high tide
Strong high pressure over southern Quebec/northern New York/and
northern New England will provide a mainly sunny but chilly day
today here in southern New England. Just some mid and high level
cloudiness floating through as an upper level trough moves
through. A few ocean-effect stratocumulus clouds formed
overnight and were affecting portions of Cape Cod and the islands.
These should move south and/or dissipate by mid morning.
Winds will be from the north to northeast and become rather gusty
from 15 to 25 mph along the east and southeast coast of MA.
Gusts from 25-30 mph are possible over Nantucket. It will be
quite chilly today, with 850 mb temps of only 0C to -1C. The
record low maximum temperature for Boston is 58 degrees set back
in 1960...and this could be matched or broken. Highs will
generally be in the lower 60s but some locations may only reach
the upper 50s.
The astronomical tide is forecast to be 11.7 ft MLLW at Boston
this afternoon, which is high, but a surge of only 0.3 ft is
anticipated. This may cause some splashover at the usual places,
but felt that it would not be widespread or significant enough
to warrant a Coastal Flood Statement.
A High Surf Advisory is in effect along the MA and RI coasts.
There remains an elevated fire weather potential due to the
persistent dry weather and somewhat gusty winds, especially in
southeastern areas.
&&
.SHORT TERM /6 PM THIS EVENING THROUGH MONDAY NIGHT/...
Tonight and Monday...
High pressure over northern New England tonight retreats
westward into New York State Monday. The result is more of the
same weather. Dry, mainly clear conditions. That sets the stage
for good radiational cooling tonight. Additional freeze and
frost warnings will be needed again, in roughly the same region.
We will assess which zones already received a freeze tonight
before issuing the warnings/advisories. We are forecasting lows
ranging from 30-33 in western MA...to the mid and upper 30s
elsewhere, except 40 to 45 in Boston, Providence, Cape Cod, and
Nantucket. Monday will be a few degrees warmer...with highs
mainly from 60-65, but still a little below normal. Northeast
winds will be gusty again along the east and south coasts, with
up to 30 mph possible on Nantucket.
High Surf Advisory remains posted through the period.
&&
.LONG TERM /TUESDAY THROUGH SUNDAY/...
Big Picture...
Closed upper low south of Nova Scotia associated with Hurricane
Teddy will move north/northeast. Meanwhile, upper ridge across the
Eastern USA ties in with a broad area of dry weather. The ridge will
diminish through late week, allowing the northern jet to inch south
of the border. A weak shortwave in that flow will sweep through New
England Friday. A ridge then briefly returns for Saturday and
possibly Sunday.
Contours at 500-mb shows lower/cooler than normal heights Tuesday,
but these build higher/warmer with the ridge through most of the
week.
Model mass fields are similar through Thursday morning, then diverge
through the weekend. Confidence is high Tuesday and Wednesday,
trending to moderate Thursday through Sunday.
Details...
Tuesday...
Hurricane Teddy south of Nova Scotia and high pressure over the
Midwest/South will develop a pressure gradient/north winds over
Southern New England. This wind will be strongest on Cape Cod and
Islands, closest to Teddy. Wind fields aloft are forecast to reach
40-45 kt along the coastal waters of the Outer Cape and
Nantucket, so gusts of 45-50 mph are possible in the adjoining
land area. Values along the rest of the east coast are forecast
at 25-35 kt/30-40 mph, values diminishing farther west.
The persistent north wind will push water against north-facing
coasts, so Coastal Flood concerns continue in those areas. High
swell moving shore-ward on all exposed coasts will also maintain a
high risk for High Surf and Rip Currents. See the Marine and Coastal
Flood sections of this discussion for more details.
Moisture fields show a moist layer above 500-mb, mainly Eastern MA.
Plenty of dry air below. So dry weather expected. Temps in the
mixed layer will be 4-6C, so expect Tuesday max temps mid 60s to
around 70.
A weak shortwave sweeps an area of mid-high clouds in from the
northwest after midnight, and with dew points in the 40s expect min
temps 45 to 55.
Wednesday through Sunday...
Hurricane Teddy lifts northeast through Cape Breton and Newfoundland
Wednesday/Wed night. The weak shortwave may linger a few clouds
during the day. Otherwise the building ridge will bring fair weather
and milder temps Wednesday. Temps in the mixed layer will be 9-10C,
supporting max temps in the 70s.
Most of the late week and weekend will continue the dry spell. A
weak northern stream shortwave and cold front Friday. Moisture cross
sections suggest a dry layer between 700 and 850-mb, limiting the
precip potential. The forecast will show slight chance pops, mostly
north of the Mass Pike, on Friday. but dry for most people.
Mixing will tap 8-10C Thursday-Friday, then 6-8C over the weekend.
This supports max sfc temps in the 70s, possibly around 80 in spots
Thursday.
&&
.AVIATION /19Z SUNDAY THROUGH FRIDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through 00Z...High confidence.
VFR with diurnal cumulus diminishing this evening due to the
loss of day time heating. May see clouds linger across Cape cod
and the Islands due to ocean-effect. Cloud bases around 4-7
kft. Winds remain out of the NNE/NE. Expect it to remain gusty
across Cape Cod, the Islands and south coast with gusts between
20-30 kts.
Tonight...High confidence.
VFR with clear skies and light winds across the interior. May
see stratocumulus clouds linger across Cape Cod and the Islands
due to ocean-effect. VFR with clear skies and light winds
across the interior. Will remain gusty across the Islands
tonight, but think that HYA/FMH will see the mixed layer
decouple. The Islands will see winds of 15-20 kts with gust of
25-30 kts out of the NE.
Monday...High confidence.
VFR with clear skies and light winds across much of the
interior. The only exception will be along the south coast,
southeast MA, Cape Cod and the Islands. Will remain gusty in
these areas out of the NE with speeds of 10-20 kts and gusts of
20-30 kts.
Monday Night...High confidence.
VFR with clear skies and light winds across the interior.
Remaining gusty across Cape Cod and the Islands especially
toward daybreak. NE winds shifting to the N with speeds of 10-20
kts. Gusts of 20-25 kts increasing to 25-35 kt late.
KBOS Terminal...High confidence in TAF.
KBDL Terminal...High confidence in TAF.
Outlook /Tuesday through Friday/...
Tuesday: VFR. Windy, with gusts up to 35 kt along parts of the
MA east coast.
Tuesday Night: VFR. Windy with gusts up to 30 kt.
Wednesday: VFR. Breezy.
Wednesday Night through Friday: VFR.
&&
.MARINE...
415 AM update...
*Small Craft Advisories continue through Monday night...
*Gale Watch issued for parts of the eastern waters for
Tuesday...
A very rough period is in store for the marine community.
Mariners should pay close attention to the forecast.
Rough seas from 5 to 9 ft will persist on NE winds today, which
will gust up to 20-30 kt today, highest in southeastern waters.
By tonight, seas build to 8 to 10 ft over the outer waters.
The seas will be 5 to 6 ft at the entrance to Boston Harbor and
at the entrance to Narragansett Bay. The same is true for
Monday, with slightly higher seas...up to 10 to 12 ft southeast
of Nantucket. Seas will then build further, as mentioned below.
Outlook /Tuesday through Friday/...
Tuesday: Low risk for gale force winds with gusts up to 40 kt.
Rough seas up to 22 ft.
Tuesday Night: Low risk for gale force winds with gusts up to
35 kt. Rough seas up to 22 ft.
Wednesday: Low risk for Small Craft Advisory winds with gusts
up to 30 kt. Areas of rough seas.
Wednesday Night: Winds less than 25 kt. Areas of seas
approaching 5 ft.
Thursday through Thursday Night: Winds less than 25 kt. Seas
less than 5 feet.
Friday: Winds less than 25 kt. Areas of seas approaching 5 ft.
&&
.FIRE WEATHER...
We continue with the special weather statement for Monday. The
unusually prolonged stretch of dry weather continues and minimum
RH values will drop to between 25 and 35 percent across much of
the interior and 40 to 45 along the coastline. It will be a bit
gusty near the coastline too.
There are even greater fire weather concerns on Tuesday.
Distant Hurricane Teddy should generate 20 to 30 mph wind gusts
over most areas but up to 35 to 45 mph for Cape Cod and
Nantucket. Minimum RH values will be similar to Monday.
&&
.TIDES/COASTAL FLOODING...
High astronomical MLLW tides of 11.7 ft this afternoon and 11.6 feet
on Monday afternoon may result in some nuisance splashover/beach
erosion along the eastern MA coast given gusty NE winds.
There is more concern on Tuesday as distant Hurricane Teddy results
in some pressure falls and the potential for northerly wind
gusts of 40 to 50 mph across the Cape/Nantucket. This combined
with highs seas offshore may result in pockets of minor coastal
flooding along the eastern MA coast. This is especially true on
the north facing coastline across Cape Cod Bay and Nantucket
Sound given the wind trajectory and the potential for a 1-2 foot
storm surge. While we are not expecting a significant coastal
flood event, inundation on vulnerable shoreline roadways may
occur within a few hours of the high tide along with beach
erosion. This will likely require the eventual need for a
Coastal Flood Advisory for Tuesday.
&&
.CLIMATE...
Sun, Sep 20...Current record daily coldest high temperatures
and year.
BOS 58F (1960)
BDL 58F (1982)
ORH 53F (1987)
PVD 56F (1972)
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Frost Advisory from 1 AM to 8 AM EDT Monday for CTZ002>004.
MA...High Surf Advisory until 8 PM EDT Tuesday for MAZ007-019-020-
022>024.
Frost Advisory from 1 AM to 8 AM EDT Monday for MAZ004>006-
009>013-017-026.
RI...High Surf Advisory until 8 PM EDT Tuesday for RIZ006>008.
Frost Advisory from 1 AM to 8 AM EDT Monday for RIZ001.
MARINE...Gale Watch from Tuesday morning through Tuesday evening for
ANZ231-232.
Small Craft Advisory until 6 AM EDT Tuesday for ANZ231>235-237-
250-251-254>256.
Gale Watch from Tuesday morning through late Tuesday night for
ANZ250-254-255.
&&
SYNOPSIS...WTB/Frank/BL/GAF
NEAR TERM...Frank/BL/GAF
SHORT TERM...GAF
LONG TERM...WTB/Frank
AVIATION...WTB/BL
MARINE...WTB/Frank/GAF
FIRE WEATHER...
TIDES/COASTAL FLOODING...
CLIMATE...Hazardous weather outlook, Sep 20, 6:24 AM EDT, 9 hours 13 minutes before
Hazardous Weather Outlook National Weather Service Boston/Norton MA 624 AM EDT Sun Sep 20 2020 MAZ002>004-008>011-211030- Western Franklin MA-Eastern Franklin MA-Northern Worcester MA- Western Hampshire MA-Western Hampden MA-Eastern Hampshire MA- Eastern Hampden MA- 624 AM EDT Sun Sep 20 2020 ...FREEZE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING... This Hazardous Weather Outlook is for central Massachusetts and western Massachusetts. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Freeze Warning. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Additional frost/freeze headlines will likely be needed early Monday and early Tuesday mornings where the growing season is still active. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CTZ002>004-MAZ005-006-012-013-017-018-026-RIZ001-211030- Hartford CT-Tolland CT-Windham CT-Central Middlesex MA- Western Essex MA-Southern Worcester MA-Western Norfolk MA- Northern Bristol MA-Western Plymouth MA-Northern Middlesex MA- Northwest Providence RI- 624 AM EDT Sun Sep 20 2020 ...FROST ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING... This Hazardous Weather Outlook is for northern Connecticut, central Massachusetts, eastern Massachusetts, northeastern Massachusetts, southeastern Massachusetts and northern Rhode Island. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Frost Advisory. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Additional frost headlines will likely be needed early Monday and early Tuesday mornings. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. MAZ020-RIZ006-007-211030- Southern Bristol MA-Washington RI-Newport RI- 624 AM EDT Sun Sep 20 2020 ...HIGH SURF ADVISORY IN EFFECT UNTIL 8 PM EDT TUESDAY... This Hazardous Weather Outlook is for southeastern Massachusetts and southern Rhode Island. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. High Surf Advisory. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. High Surf Advisory. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. MAZ014-021-RIZ002>005-211030- Southeast Middlesex MA-Southern Plymouth MA-Southeast Providence RI- Western Kent RI-Eastern Kent RI-Bristol RI- 624 AM EDT Sun Sep 20 2020 This Hazardous Weather Outlook is for eastern Massachusetts, southeastern Massachusetts and northern Rhode Island. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. MAZ007-019-022>024-RIZ008-211030- Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Dukes MA- Nantucket MA-Block Island RI- 624 AM EDT Sun Sep 20 2020 ...HIGH SURF ADVISORY IN EFFECT UNTIL 8 PM EDT TUESDAY... This Hazardous Weather Outlook is for northeastern Massachusetts, southeastern Massachusetts and southern Rhode Island. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. High Surf Advisory. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. High Surf Advisory. Pockets of minor coastal flooding and beach erosion are likely during the Tuesday afternoon high tide cycle along the eastern Massachusetts coast. This is especially true across the north facing coastline across Cape Cod and Nantucket. In addition, a wind advisory may be needed on Tuesday for Cape Cod and Nantucket. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. MAZ015-016-211030- Suffolk MA-Eastern Norfolk MA- 624 AM EDT Sun Sep 20 2020 This Hazardous Weather Outlook is for eastern Massachusetts. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Pockets of minor coastal flooding and beach erosion are likely during the Tuesday afternoon high tide cycle along the eastern Massachusetts coast. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. ANZ230>237-250-251-254>256-211030- Boston Harbor-Cape Cod Bay-Nantucket Sound-Vineyard Sound- Buzzards Bay-Rhode Island Sound-Narragansett Bay-Block Island Sound- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary-Massachusetts Bay and Ipswich Bay- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 624 AM EDT Sun Sep 20 2020 This Hazardous Weather Outlook is for Massachusetts and Rhode Island coastal waters. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Strong northerly gale force wind gusts of 35 to 45 knots are expected across our eastern Massachusetts coastal waters on Tuesday. In addition, dangerously high seas of 12 to 18 feet are expected for our eastern Massachusetts coastal waters on Tuesday. This is from distant Hurricane Teddy. Please see our Marine Weather Statement for additional information. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. Frank For more information on upcoming hazardous weather, please see the Area Forecast Discussion on our webpage for the latest forecast thinking. There is also our Enhanced Hazardous Weather Outlook at www.weather.gov/box/ehwo For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 3:22 PM EDT | Gale Watch | BOX | 12 hr | |
| Sep 20, 3:57 PM EDT | Frost Advisory | BOX | Bristol, Essex, Hampden, Hampshire, Middlesex, Norfolk and 1 more | 16 hr |
Nearby
Coastal Flood Statements in Massachusetts, 2020Every coastal flood statement in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.