Alert archive / Massachusetts / Coastal Flood Statements in 2021
Coastal Flood Statement 14, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this coastal flood statement at Nov 8, 2021, 4:11 AM EST for 6 counties in Massachusetts. It took effect at Nov 8, 2021, 12:00 PM EST. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Nov 8, 2021, 4:11 AM EST (09:11 UTC)
- In effect from
- Nov 8, 2021, 12:00 PM EST
- Expired
- Nov 8, 2021, 3:00 PM EST
- In force
- 3 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 09:15 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
Gray, ME (KGYX), launched 00:00Z, 9.2 hours before the alert went out and 211 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2315 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
829
WHUS41 KBOX 080911
CFWBOX
Coastal Hazard Message
National Weather Service Boston/Norton MA
411 AM EST Mon Nov 8 2021
MAZ007-015-016-019-022-024-082000-
/O.NEW.KBOX.CF.S.0014.211108T1700Z-211108T2000Z/
Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-
Eastern Plymouth MA-Barnstable MA-Nantucket MA-
411 AM EST Mon Nov 8 2021
...COASTAL FLOOD STATEMENT IN EFFECT FROM NOON TODAY TO 3 PM EST
THIS AFTERNOON...
* WHAT...Up to one foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways (3.3 to 13.1 feet Mean Lower Low Water).
* WHERE...Eastern Plymouth MA, Suffolk MA, Eastern Essex MA,
Barnstable MA, Eastern Norfolk MA and Nantucket MA Counties.
* WHEN...From noon today to 3 PM EST this afternoon.
* IMPACTS...Minor coastal splashover is expected along the North
Shore from Gloucester to Newburyport. Wave action will likely
cause some splashover onto coastal roads around the time of high
tide.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
&&
&&
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
-------- --------- --------- --------- ------- --------
08/01 AM 9.0/ 9.5 -0.6/-0.1 0.4/ 0.9 2 None
08/02 PM 10.3/10.8 0.8/ 1.3 0.2/ 0.8 3 None
09/02 AM 8.8/ 9.3 -0.8/-0.2 0.4/ 0.9 3 None
09/03 PM 10.1/10.6 0.6/ 1.1 0.4/ 0.9 3 None
10/03 AM 8.5/ 9.0 -1.1/-0.6 0.4/ 0.9 3 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
-------- --------- --------- --------- ------- --------
08/01 AM 10.1/10.6 0.6/ 1.1 0.2/ 0.8 2 None
08/01 PM 11.5/12.0 2.0/ 2.5 0.4/ 0.9 4 Minor
09/02 AM 9.8/10.3 0.2/ 0.8 0.4/ 0.9 4 None
09/02 PM 11.1/11.6 1.6/ 2.0 0.4/ 0.9 3-4 Minor
10/03 AM 9.5/10.0 0.0/ 0.5 0.4/ 0.9 3 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
-------- --------- --------- --------- ------- --------
08/01 AM 10.5/11.0 0.6/ 1.1 0.2/ 0.8 1 None
08/01 PM 12.1/12.6 2.2/ 2.7 0.4/ 0.9 1 Minor
09/02 AM 10.2/10.7 0.2/ 0.8 0.4/ 0.9 1 None
09/02 PM 11.6/12.1 1.7/ 2.2 0.4/ 0.9 1 None
10/03 AM 9.8/10.3 -0.2/ 0.3 0.4/ 0.9 1 None
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
-------- --------- --------- --------- ------- --------
08/01 AM 10.7/11.2 0.6/ 1.1 0.4/ 0.9 1 None
08/01 PM 12.1/12.6 2.0/ 2.5 0.5/ 1.0 1 Minor
09/02 AM 10.3/10.8 0.2/ 0.7 0.4/ 0.9 1 None
09/02 PM 11.5/12.0 1.4/ 1.9 0.4/ 0.9 1 None
10/03 AM 10.0/10.5 -0.2/ 0.3 0.5/ 1.0 1 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
-------- --------- --------- --------- ------- --------
08/01 AM 10.1/10.6 0.4/ 0.9 0.4/ 0.9 2 None
08/01 PM 11.7/12.2 2.0/ 2.5 0.5/ 1.0 4 Minor
09/02 AM 10.0/10.5 0.2/ 0.8 0.5/ 1.0 3 None
09/02 PM 11.2/11.7 1.5/ 2.0 0.4/ 0.9 2-3 Minor
10/03 AM 9.7/10.2 0.0/ 0.5 0.5/ 1.0 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
-------- --------- --------- --------- ------- --------
08/02 AM 4.2/ 4.7 -0.3/ 0.2 0.2/ 0.8 2 None
08/02 PM 5.6/ 6.1 1.1/ 1.6 0.5/ 1.0 3 None
09/03 AM 4.2/ 4.7 -0.3/ 0.2 0.4/ 0.9 2 None
09/03 PM 5.2/ 5.7 0.8/ 1.3 0.4/ 0.9 2 None
10/04 AM 4.0/ 4.5 -0.5/ 0.0 0.4/ 0.9 2 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
-------- --------- --------- --------- ------- --------
07/10 PM 4.6/ 5.1 0.2/ 0.7 0.2/ 0.8 1 None
08/10 AM 5.2/ 5.7 0.8/ 1.3 0.2/ 0.7 1 None
08/10 PM 4.5/ 5.0 0.1/ 0.6 0.6/ 1.1 1 None
09/11 AM 5.0/ 5.5 0.6/ 1.1 0.2/ 0.8 1-2 None
10/12 AM 4.2/ 4.7 -0.2/ 0.3 0.2/ 0.8 1 None
10/12 PM 4.6/ 5.1 0.2/ 0.7 0.2/ 0.7 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
-------- --------- --------- --------- ------- --------
08/01 AM 10.6/11.1 0.5/ 1.0 0.4/ 0.9 1 None
08/02 PM 12.0/12.5 1.9/ 2.3 0.4/ 0.9 1 None
09/02 AM 10.3/10.8 0.2/ 0.7 0.4/ 0.9 1 None
09/03 PM 11.4/11.9 1.3/ 1.8 0.2/ 0.8 3 None
10/03 AM 10.0/10.5 -0.2/ 0.3 0.5/ 1.0 2 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
-------- --------- --------- --------- ------- --------
07/10 PM 2.8/ 3.4 0.9/ 1.4 0.4/ 0.9 1 None
08/10 AM 3.2/ 3.7 1.3/ 1.8 0.4/ 0.9 1 None
08/11 PM 2.8/ 3.4 0.9/ 1.4 0.5/ 1.0 1 None
09/11 AM 3.1/ 3.6 1.1/ 1.6 0.4/ 0.9 1 None
10/12 AM 2.6/ 3.1 0.6/ 1.1 0.2/ 0.8 1 None
10/12 PM 2.7/ 3.2 0.8/ 1.3 0.2/ 0.7 1 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
-------- --------- --------- --------- ------- --------
08/01 AM 11.4/11.9 0.9/ 1.4 0.6/ 1.1 1 None
08/02 PM 12.7/13.2 2.2/ 2.7 0.5/ 1.0 1-2 Minor
09/02 AM 10.9/11.4 0.4/ 0.9 0.5/ 1.0 1 None
09/02 PM 12.2/12.7 1.7/ 2.2 0.5/ 1.0 1 None
10/03 AM 10.6/11.1 0.1/ 0.6 0.5/ 1.0 1 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
-------- --------- --------- --------- ------- --------
08/02 AM 5.2/ 5.7 -2.6/-2.1 0.4/ 0.9 3-5 None
08/02 PM 6.4/ 6.9 -1.4/-0.9 0.5/ 1.0 5 None
09/03 AM 5.1/ 5.6 -2.7/-2.2 0.4/ 0.9 4 None
09/03 PM 6.1/ 6.6 -1.7/-1.2 0.4/ 0.9 3-4 None
10/04 AM 4.9/ 5.4 -2.8/-2.3 0.4/ 0.9 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
-------- --------- --------- --------- ------- --------
08/01 AM 9.6/10.1 -0.8/-0.2 0.5/ 1.0 1-2 None
08/01 PM 11.1/11.6 0.8/ 1.3 0.7/ 1.1 2-3 None
09/02 AM 9.3/ 9.8 -1.1/-0.6 0.5/ 1.0 1 None
09/02 PM 10.5/11.0 0.2/ 0.7 0.5/ 1.0 2 None
10/03 AM 9.0/ 9.5 -1.4/-0.9 0.5/ 1.0 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
-------- --------- --------- --------- ------- --------
08/02 AM 3.5/ 4.0 -0.2/ 0.3 0.5/ 1.0 2-3 None
08/03 PM 4.6/ 5.1 1.0/ 1.5 0.6/ 1.1 3-4 Minor
09/03 AM 3.4/ 3.9 -0.2/ 0.2 0.4/ 0.9 1-2 None
09/03 PM 4.2/ 4.7 0.6/ 1.1 0.4/ 0.9 2 None
10/04 AM 3.2/ 3.7 -0.3/ 0.2 0.4/ 0.9 1-2 None
&&
$$1 follow-up statement
090 WHUS41 KBOX 081955 CFWBOX Coastal Hazard Message National Weather Service Boston/Norton MA 255 PM EST Mon Nov 8 2021 MAZ007-015-016-019-022-024-082100- /O.EXP.KBOX.CF.S.0014.000000T0000Z-211108T2000Z/ Eastern Essex MA-Suffolk MA-Eastern Norfolk MA- Eastern Plymouth MA-Barnstable MA-Nantucket MA- 255 PM EST Mon Nov 8 2021 ...COASTAL FLOOD STATEMENT WILL EXPIRE AT 3 PM EST THIS AFTERNOON... High tide has passed and water levels have fallen below minor flooding thresholds along the east coast of Massachusetts. $$
Nearby
Coastal Flood Statements in Massachusetts, 2021Every coastal flood statement in 2021
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.