Alert archive / Massachusetts / Coastal Flood Statements in 2017
Coastal Flood Statement 5, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this coastal flood statement at Apr 27, 2017, 3:59 PM EDT for 6 counties in Massachusetts. It took effect at Apr 28, 2017, 12:00 AM EDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Apr 27, 2017, 3:59 PM EDT (19:59 UTC)
- In effect from
- Apr 28, 2017, 12:00 AM EDT
- Expired
- Apr 28, 2017, 3:32 AM EDT
- In force
- 4 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 20:02 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, 8.0 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 542 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -46 m²/s²
- 0-3 km storm-relative helicity
- -45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
319
WHUS41 KBOX 271959
CFWBOX
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE TAUNTON MA
359 PM EDT THU APR 27 2017
MAZ007-015-016-019-022-024-280400-
/O.NEW.KBOX.CF.S.0005.170428T0400Z-170428T0800Z/
EASTERN ESSEX MA-SUFFOLK MA-EASTERN NORFOLK MA-EASTERN PLYMOUTH MA-
BARNSTABLE MA-NANTUCKET MA-
359 PM EDT THU APR 27 2017
...A FEW POCKETS OF COASTAL FLOODING POSSIBLE TONIGHT...
* LOCATION...EAST COAST OF MASSACHUSETTS INCLUDING NANTUCKET, MAINLY OCEAN
EXPOSED COASTLINE.
* TIDAL DEPARTURE...A FEW TENTHS OF A FOOT.
* TIMING...AROUND THE TIME OF HIGH TIDE TONIGHT BETWEEN MIDNIGHT AND 1AM.
* COASTAL FLOOD IMPACTS...SOME MINOR SPLASHOVER AND BEACH EROSION AT TYPICALLY
PRONE FLOOD SPOTS. SOME SHORELINE ROADS MAY BE IMPACTED.
&&
TIME OF HIGH TOTAL TIDES ARE APPROXIMATE TO THE NEAREST HOUR.
NEWBURYPORT
MLLW CATEGORIES - MINOR 11.0 FT, MODERATE 12.5 FT, MAJOR 14.0 FT
MHHW CATEGORIES - MINOR 1.5 FT, MODERATE 3.0 FT, MAJOR 4.5 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 10.0/10.5 0.5/ 1.0 -0.2/ 0.3 3-4 NONE
28/02 PM 9.0/ 9.5 -0.6/-0.1 -0.2/ 0.2 3 NONE
29/02 AM 10.0/10.5 0.5/ 1.0 -0.2/ 0.2 2-3 NONE
29/03 PM 8.8/ 9.3 -0.8/-0.2 -0.2/ 0.2 2 NONE
30/03 AM 9.9/10.4 0.4/ 0.9 -0.2/ 0.2 1 NONE
GLOUCESTER HARBOR
MLLW CATEGORIES - MINOR 12.0 FT, MODERATE 14.5 FT, MAJOR 15.5 FT
MHHW CATEGORIES - MINOR 2.5 FT, MODERATE 5.0 FT, MAJOR 6.0 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 11.5/12.0 2.0/ 2.5 0.1/ 0.6 4 NONE
28/02 PM 10.3/10.8 0.8/ 1.3 -0.2/ 0.3 4 NONE
29/02 AM 11.2/11.7 1.7/ 2.2 -0.2/ 0.2 3 NONE
29/02 PM 10.0/10.5 0.5/ 1.0 -0.2/ 0.2 3 NONE
30/03 AM 11.0/11.5 1.5/ 2.0 -0.2/ 0.2 1 NONE
BOSTON HARBOR
MLLW CATEGORIES - MINOR 12.5 FT, MODERATE 15.0 FT, MAJOR 16.0 FT
MHHW CATEGORIES - MINOR 2.4 FT, MODERATE 4.9 FT, MAJOR 5.9 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 11.8/12.3 1.7/ 2.2 -0.2/ 0.2 1 NONE
28/02 PM 10.8/11.3 0.7/ 1.1 -0.2/ 0.2 1 NONE
29/02 AM 11.8/12.3 1.7/ 2.2 -0.2/ 0.2 1 NONE
29/02 PM 10.6/11.1 0.5/ 1.0 -0.2/ 0.2 1 NONE
30/03 AM 11.5/12.0 1.4/ 1.9 -0.2/ 0.2 1 NONE
REVERE
MLLW CATEGORIES - MINOR 12.5 FT, MODERATE 15.0 FT, MAJOR 16.5 FT
MHHW CATEGORIES - MINOR 2.6 FT, MODERATE 5.1 FT, MAJOR 6.6 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 12.0/12.5 2.1/ 2.6 0.1/ 0.6 3 NONE
28/02 PM 10.7/11.2 0.8/ 1.3 -0.2/ 0.3 3 NONE
29/02 AM 11.7/12.2 1.8/ 2.2 -0.2/ 0.2 2 NONE
29/02 PM 10.5/11.0 0.6/ 1.1 -0.2/ 0.2 2 NONE
30/03 AM 11.4/11.9 1.5/ 2.0 -0.2/ 0.2 1 NONE
SCITUATE
MLLW CATEGORIES - MINOR 11.5 FT, MODERATE 14.0 FT, MAJOR 16.0 FT
MHHW CATEGORIES - MINOR 1.8 FT, MODERATE 4.3 FT, MAJOR 6.3 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 11.6/12.1 1.9/ 2.3 0.2/ 0.8 3 MINOR
28/02 PM 10.1/10.6 0.4/ 0.9 -0.2/ 0.2 2-3 NONE
29/02 AM 11.2/11.7 1.5/ 2.0 -0.2/ 0.2 2 NONE
29/02 PM 10.0/10.5 0.2/ 0.8 -0.2/ 0.2 2 NONE
30/03 AM 11.1/11.6 1.4/ 1.9 -0.2/ 0.2 1 NONE
SANDWICH / DENNIS
MLLW CATEGORIES - MINOR 13.0 FT, MODERATE 14.0 FT, MAJOR 15.5 FT
MHHW CATEGORIES - MINOR 2.7 FT, MODERATE 3.7 FT, MAJOR 5.2 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 12.0/12.5 1.7/ 2.2 0.2/ 0.8 1 NONE
28/02 PM 10.6/11.1 0.2/ 0.8 -0.2/ 0.3 1 NONE
29/02 AM 11.6/12.1 1.3/ 1.8 -0.2/ 0.2 1 NONE
29/02 PM 10.2/10.7 -0.2/ 0.3 -0.2/ 0.2 1 NONE
30/03 AM 11.3/11.8 1.0/ 1.5 -0.2/ 0.2 1 NONE
PROVINCETOWN HARBOR
MLLW CATEGORIES - MINOR 12.5 FT, MODERATE 13.5 FT, MAJOR 15.0 FT
MHHW CATEGORIES - MINOR 2.4 FT, MODERATE 3.4 FT, MAJOR 4.9 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 12.6/13.1 2.5/ 3.0 0.2/ 0.8 1 MINOR
28/02 PM 11.1/11.6 1.0/ 1.5 -0.2/ 0.2 1 NONE
29/02 AM 12.1/12.6 2.0/ 2.5 -0.2/ 0.2 1 NONE
29/03 PM 10.8/11.3 0.7/ 1.1 -0.2/ 0.2 2 NONE
30/03 AM 11.8/12.3 1.7/ 2.2 -0.2/ 0.2 1 NONE
CHATHAM - EAST COAST
MLLW CATEGORIES - MINOR 9.5 FT, MODERATE 12.0 FT, MAJOR 13.0 FT
MHHW CATEGORIES - MINOR 1.8 FT, MODERATE 4.3 FT, MAJOR 5.3 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
27/03 PM 5.1/ 5.6 -2.7/-2.2 0.1/ 0.6 4 NONE
28/02 AM 6.6/ 7.1 -1.1/-0.7 -0.2/ 0.3 4 NONE
28/02 PM 5.6/ 6.1 -2.2/-1.7 -0.2/ 0.2 4 NONE
29/03 AM 6.6/ 7.1 -1.1/-0.7 -0.2/ 0.2 3 NONE
29/03 PM 5.6/ 6.1 -2.2/-1.7 -0.2/ 0.2 3 NONE
30/04 AM 6.5/ 7.0 -1.3/-0.8 -0.2/ 0.2 2 NONE
CHATHAM - SOUTH COAST
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
-------- --------- --------- --------- ------- --------
27/03 PM 3.5/ 4.0 -1.1/-0.6 0.1/ 0.6 2 NONE
28/02 AM 4.7/ 5.2 0.2/ 0.7 0.1/ 0.6 2 NONE
28/03 PM 3.7/ 4.2 -0.9/-0.4 -0.2/ 0.3 2 NONE
29/03 AM 4.4/ 4.9 -0.2/ 0.3 -0.2/ 0.2 1 NONE
29/04 PM 3.5/ 4.0 -1.1/-0.6 -0.2/ 0.2 2 NONE
30/04 AM 4.2/ 4.7 -0.2/ 0.2 -0.2/ 0.2 1 NONE
BUZZARDS BAY - 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
-------- --------- --------- --------- ------- --------
27/10 PM 3.2/ 3.7 1.3/ 1.8 0.1/ 0.6 1 NONE
28/10 AM 2.7/ 3.2 0.7/ 1.1 0.0/ 0.5 1 NONE
28/11 PM 3.0/ 3.5 1.0/ 1.5 -0.2/ 0.2 1 NONE
29/11 AM 2.3/ 2.8 0.4/ 0.9 -0.2/ 0.2 1 NONE
30/12 AM 2.7/ 3.2 0.8/ 1.3 -0.2/ 0.2 1 NONE
30/12 PM 2.3/ 2.8 0.4/ 0.9 -0.2/ 0.3 1 NONE
WINGS NECK
MLLW CATEGORIES - MINOR 6.5 FT, MODERATE 9.0 FT, MAJOR 11.5 FT
MHHW CATEGORIES - MINOR 2.2 FT, MODERATE 4.7 FT, MAJOR 7.2 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
27/10 PM 5.6/ 6.1 1.3/ 1.8 0.2/ 0.7 1 NONE
28/10 AM 4.7/ 5.2 0.5/ 1.0 0.1/ 0.6 1 NONE
28/11 PM 5.1/ 5.6 0.8/ 1.3 -0.2/ 0.3 1 NONE
29/11 AM 4.4/ 4.9 0.1/ 0.6 -0.2/ 0.3 1 NONE
29/11 PM 4.7/ 5.2 0.5/ 1.0 -0.2/ 0.2 1 NONE
30/12 PM 4.0/ 4.5 -0.2/ 0.2 -0.2/ 0.2 1 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
-------- --------- --------- --------- ------- --------
27/03 PM 2.8/ 3.4 -0.8/-0.2 0.1/ 0.6 2 NONE
28/02 AM 4.0/ 4.5 0.4/ 0.9 0.1/ 0.6 1 NONE
28/03 PM 3.0/ 3.5 -0.7/-0.2 -0.2/ 0.2 2 NONE
29/03 AM 3.7/ 4.2 0.1/ 0.6 -0.2/ 0.2 1-2 NONE
29/04 PM 2.8/ 3.4 -0.8/-0.2 -0.2/ 0.2 2 NONE
30/04 AM 3.6/ 4.1 0.0/ 0.5 -0.2/ 0.2 1-2 NONE
NANTUCKET EAST COAST - EROSION IMPACTS
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
27/03 PM 3.2/ 3.7 -0.9/-0.4 0.1/ 0.6 4 NONE
28/02 AM 4.2/ 4.7 0.2/ 0.7 0.0/ 0.5 4 NONE
28/02 PM 3.5/ 4.0 -0.7/-0.2 -0.2/ 0.2 4 NONE
29/03 AM 4.0/ 4.5 0.0/ 0.5 -0.2/ 0.2 3 NONE
29/03 PM 3.4/ 3.9 -0.8/-0.2 -0.2/ 0.2 3 NONE
30/04 AM 4.0/ 4.5 0.0/ 0.5 -0.2/ 0.2 3 NONE
NANTUCKET - MADAKET AREA EROSION IMPACTS
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 3.0/ 3.5 1.6/ 2.0 0.1/ 0.6 4 NONE
28/02 PM 2.2/ 2.7 0.9/ 1.4 -0.2/ 0.2 4 NONE
29/02 AM 2.7/ 3.2 1.3/ 1.8 -0.2/ 0.2 4 NONE
29/03 PM 2.2/ 2.7 0.9/ 1.4 -0.2/ 0.2 4 NONE
30/03 AM 2.7/ 3.2 1.3/ 1.8 -0.2/ 0.2 2-3 NONE
$$
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719
WHUS41 KBOX 280224
CFWBOX
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE TAUNTON MA
1024 PM EDT THU APR 27 2017
MAZ007-015-016-019-022-024-280800-
/O.CON.KBOX.CF.S.0005.170428T0400Z-170428T0800Z/
EASTERN ESSEX MA-SUFFOLK MA-EASTERN NORFOLK MA-EASTERN PLYMOUTH MA-
BARNSTABLE MA-NANTUCKET MA-
1024 PM EDT THU APR 27 2017
...POCKETS OF COASTAL FLOODING POSSIBLE TONIGHT...
* LOCATION...EAST COAST OF MASSACHUSETTS INCLUDING NANTUCKET, MAINLY OCEAN
EXPOSED COASTLINE.
* TIDAL DEPARTURE...A FEW TENTHS OF A FOOT.
* TIMING...AROUND THE TIME OF HIGH TIDE TONIGHT BETWEEN MIDNIGHT AND 1AM.
* COASTAL FLOOD IMPACTS...SOME MINOR SPLASHOVER AND BEACH EROSION AT TYPICALLY
PRONE FLOOD SPOTS. SOME SHORELINE ROADS MAY BE IMPACTED.
&&
TIME OF HIGH TOTAL TIDES ARE APPROXIMATE TO THE NEAREST HOUR.
NEWBURYPORT
MLLW CATEGORIES - MINOR 11.0 FT, MODERATE 12.5 FT, MAJOR 14.0 FT
MHHW CATEGORIES - MINOR 1.5 FT, MODERATE 3.0 FT, MAJOR 4.5 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 10.0/10.5 0.5/ 1.0 -0.2/ 0.3 3-4 NONE
28/02 PM 9.0/ 9.5 -0.6/-0.1 -0.2/ 0.2 3 NONE
29/02 AM 10.0/10.5 0.5/ 1.0 -0.2/ 0.2 2-3 NONE
29/03 PM 8.8/ 9.3 -0.8/-0.2 -0.2/ 0.2 2 NONE
30/03 AM 9.9/10.4 0.4/ 0.9 -0.2/ 0.2 1 NONE
GLOUCESTER HARBOR
MLLW CATEGORIES - MINOR 12.0 FT, MODERATE 14.5 FT, MAJOR 15.5 FT
MHHW CATEGORIES - MINOR 2.5 FT, MODERATE 5.0 FT, MAJOR 6.0 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 11.5/12.0 2.0/ 2.5 0.1/ 0.6 4 NONE
28/02 PM 10.3/10.8 0.8/ 1.3 -0.2/ 0.3 4 NONE
29/02 AM 11.2/11.7 1.7/ 2.2 -0.2/ 0.2 3 NONE
29/02 PM 10.0/10.5 0.5/ 1.0 -0.2/ 0.2 3 NONE
30/03 AM 11.0/11.5 1.5/ 2.0 -0.2/ 0.2 1 NONE
BOSTON HARBOR
MLLW CATEGORIES - MINOR 12.5 FT, MODERATE 15.0 FT, MAJOR 16.0 FT
MHHW CATEGORIES - MINOR 2.4 FT, MODERATE 4.9 FT, MAJOR 5.9 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 11.8/12.3 1.7/ 2.2 -0.2/ 0.2 1 NONE
28/02 PM 10.8/11.3 0.7/ 1.1 -0.2/ 0.2 1 NONE
29/02 AM 11.8/12.3 1.7/ 2.2 -0.2/ 0.2 1 NONE
29/02 PM 10.6/11.1 0.5/ 1.0 -0.2/ 0.2 1 NONE
30/03 AM 11.5/12.0 1.4/ 1.9 -0.2/ 0.2 1 NONE
REVERE
MLLW CATEGORIES - MINOR 12.5 FT, MODERATE 15.0 FT, MAJOR 16.5 FT
MHHW CATEGORIES - MINOR 2.6 FT, MODERATE 5.1 FT, MAJOR 6.6 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 12.0/12.5 2.1/ 2.6 0.1/ 0.6 3 NONE
28/02 PM 10.7/11.2 0.8/ 1.3 -0.2/ 0.3 3 NONE
29/02 AM 11.7/12.2 1.8/ 2.2 -0.2/ 0.2 2 NONE
29/02 PM 10.5/11.0 0.6/ 1.1 -0.2/ 0.2 2 NONE
30/03 AM 11.4/11.9 1.5/ 2.0 -0.2/ 0.2 1 NONE
SCITUATE
MLLW CATEGORIES - MINOR 11.5 FT, MODERATE 14.0 FT, MAJOR 16.0 FT
MHHW CATEGORIES - MINOR 1.8 FT, MODERATE 4.3 FT, MAJOR 6.3 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 11.6/12.1 1.9/ 2.3 0.2/ 0.8 3 MINOR
28/02 PM 10.1/10.6 0.4/ 0.9 -0.2/ 0.2 2-3 NONE
29/02 AM 11.2/11.7 1.5/ 2.0 -0.2/ 0.2 2 NONE
29/02 PM 10.0/10.5 0.2/ 0.8 -0.2/ 0.2 2 NONE
30/03 AM 11.1/11.6 1.4/ 1.9 -0.2/ 0.2 1 NONE
SANDWICH / DENNIS
MLLW CATEGORIES - MINOR 13.0 FT, MODERATE 14.0 FT, MAJOR 15.5 FT
MHHW CATEGORIES - MINOR 2.7 FT, MODERATE 3.7 FT, MAJOR 5.2 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 12.0/12.5 1.7/ 2.2 0.2/ 0.8 1 NONE
28/02 PM 10.6/11.1 0.2/ 0.8 -0.2/ 0.3 1 NONE
29/02 AM 11.6/12.1 1.3/ 1.8 -0.2/ 0.2 1 NONE
29/02 PM 10.2/10.7 -0.2/ 0.3 -0.2/ 0.2 1 NONE
30/03 AM 11.3/11.8 1.0/ 1.5 -0.2/ 0.2 1 NONE
PROVINCETOWN HARBOR
MLLW CATEGORIES - MINOR 12.5 FT, MODERATE 13.5 FT, MAJOR 15.0 FT
MHHW CATEGORIES - MINOR 2.4 FT, MODERATE 3.4 FT, MAJOR 4.9 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 12.6/13.1 2.5/ 3.0 0.2/ 0.8 1 MINOR
28/02 PM 11.1/11.6 1.0/ 1.5 -0.2/ 0.2 1 NONE
29/02 AM 12.1/12.6 2.0/ 2.5 -0.2/ 0.2 1 NONE
29/03 PM 10.8/11.3 0.7/ 1.1 -0.2/ 0.2 2 NONE
30/03 AM 11.8/12.3 1.7/ 2.2 -0.2/ 0.2 1 NONE
CHATHAM - EAST COAST
MLLW CATEGORIES - MINOR 9.5 FT, MODERATE 12.0 FT, MAJOR 13.0 FT
MHHW CATEGORIES - MINOR 1.8 FT, MODERATE 4.3 FT, MAJOR 5.3 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/02 AM 6.6/ 7.1 -1.1/-0.7 -0.2/ 0.3 4 NONE
28/02 PM 5.6/ 6.1 -2.2/-1.7 -0.2/ 0.2 4 NONE
29/03 AM 6.6/ 7.1 -1.1/-0.7 -0.2/ 0.2 3 NONE
29/03 PM 5.6/ 6.1 -2.2/-1.7 -0.2/ 0.2 3 NONE
30/04 AM 6.5/ 7.0 -1.3/-0.8 -0.2/ 0.2 2 NONE
CHATHAM - SOUTH COAST
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
-------- --------- --------- --------- ------- --------
28/02 AM 4.7/ 5.2 0.2/ 0.7 0.1/ 0.6 2 NONE
28/03 PM 3.7/ 4.2 -0.9/-0.4 -0.2/ 0.3 2 NONE
29/03 AM 4.4/ 4.9 -0.2/ 0.3 -0.2/ 0.2 1 NONE
29/04 PM 3.5/ 4.0 -1.1/-0.6 -0.2/ 0.2 2 NONE
30/04 AM 4.2/ 4.7 -0.2/ 0.2 -0.2/ 0.2 1 NONE
BUZZARDS BAY - 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
-------- --------- --------- --------- ------- --------
27/10 PM 3.2/ 3.7 1.3/ 1.8 0.1/ 0.6 1 NONE
28/10 AM 2.7/ 3.2 0.7/ 1.1 0.0/ 0.5 1 NONE
28/11 PM 3.0/ 3.5 1.0/ 1.5 -0.2/ 0.2 1 NONE
29/11 AM 2.3/ 2.8 0.4/ 0.9 -0.2/ 0.2 1 NONE
30/12 AM 2.7/ 3.2 0.8/ 1.3 -0.2/ 0.2 1 NONE
30/12 PM 2.3/ 2.8 0.4/ 0.9 -0.2/ 0.3 1 NONE
WINGS NECK
MLLW CATEGORIES - MINOR 6.5 FT, MODERATE 9.0 FT, MAJOR 11.5 FT
MHHW CATEGORIES - MINOR 2.2 FT, MODERATE 4.7 FT, MAJOR 7.2 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
27/10 PM 5.6/ 6.1 1.3/ 1.8 0.2/ 0.7 1 NONE
28/10 AM 4.7/ 5.2 0.5/ 1.0 0.1/ 0.6 1 NONE
28/11 PM 5.1/ 5.6 0.8/ 1.3 -0.2/ 0.3 1 NONE
29/11 AM 4.4/ 4.9 0.1/ 0.6 -0.2/ 0.3 1 NONE
29/11 PM 4.7/ 5.2 0.5/ 1.0 -0.2/ 0.2 1 NONE
30/12 PM 4.0/ 4.5 -0.2/ 0.2 -0.2/ 0.2 1 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
-------- --------- --------- --------- ------- --------
28/02 AM 4.0/ 4.5 0.4/ 0.9 0.1/ 0.6 1 NONE
28/03 PM 3.0/ 3.5 -0.7/-0.2 -0.2/ 0.2 2 NONE
29/03 AM 3.7/ 4.2 0.1/ 0.6 -0.2/ 0.2 1-2 NONE
29/04 PM 2.8/ 3.4 -0.8/-0.2 -0.2/ 0.2 2 NONE
30/04 AM 3.6/ 4.1 0.0/ 0.5 -0.2/ 0.2 1-2 NONE
NANTUCKET EAST COAST - EROSION IMPACTS
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/02 AM 4.2/ 4.7 0.2/ 0.7 0.0/ 0.5 4 NONE
28/02 PM 3.5/ 4.0 -0.7/-0.2 -0.2/ 0.2 4 NONE
29/03 AM 4.0/ 4.5 0.0/ 0.5 -0.2/ 0.2 3 NONE
29/03 PM 3.4/ 3.9 -0.8/-0.2 -0.2/ 0.2 3 NONE
30/04 AM 4.0/ 4.5 0.0/ 0.5 -0.2/ 0.2 3 NONE
NANTUCKET - MADAKET AREA EROSION IMPACTS
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/01 AM 3.0/ 3.5 1.6/ 2.0 0.1/ 0.6 4 NONE
28/02 PM 2.2/ 2.7 0.9/ 1.4 -0.2/ 0.2 4 NONE
29/02 AM 2.7/ 3.2 1.3/ 1.8 -0.2/ 0.2 4 NONE
29/03 PM 2.2/ 2.7 0.9/ 1.4 -0.2/ 0.2 4 NONE
30/03 AM 2.7/ 3.2 1.3/ 1.8 -0.2/ 0.2 2-3 NONE
$$
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@NWSBOSTON095
WHUS41 KBOX 280732
CFWBOX
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE TAUNTON MA
332 AM EDT FRI APR 28 2017
MAZ007-015-016-019-022-024-281545-
/O.CAN.KBOX.CF.S.0005.000000T0000Z-170428T0800Z/
/O.NEW.KBOX.CF.S.0006.170429T0400Z-170429T0700Z/
EASTERN ESSEX MA-SUFFOLK MA-EASTERN NORFOLK MA-EASTERN PLYMOUTH MA-
BARNSTABLE MA-NANTUCKET MA-
332 AM EDT FRI APR 28 2017
...POCKETS OF COASTAL FLOODING POSSIBLE TONIGHT...
* LOCATION...EAST COAST OF MASSACHUSETTS INCLUDING NANTUCKET, MAINLY OCEAN
EXPOSED COASTLINE.
* TIDAL DEPARTURE...A FEW TENTHS OF A FOOT.
* TIMING...AROUND THE TIME OF HIGH TIDE TONIGHT BETWEEN MIDNIGHT AND 2AM.
* COASTAL FLOOD IMPACTS...SOME MINOR SPLASHOVER AND BEACH EROSION AT TYPICALLY
PRONE FLOOD SPOTS. SOME SHORELINE ROADS MAY BE IMPACTED.
&&
TIME OF HIGH TOTAL TIDES ARE APPROXIMATE TO THE NEAREST HOUR.
NEWBURYPORT
MLLW CATEGORIES - MINOR 11.0 FT, MODERATE 12.5 FT, MAJOR 14.0 FT
MHHW CATEGORIES - MINOR 1.5 FT, MODERATE 3.0 FT, MAJOR 4.5 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/03 AM 7.8/ 8.4 -1.7/-1.2 0.0/ 0.5 3 NONE
28/02 PM 9.0/ 9.5 -0.6/-0.1 -0.2/ 0.2 3 NONE
29/02 AM 10.0/10.5 0.5/ 1.0 -0.2/ 0.2 2-3 NONE
29/03 PM 8.8/ 9.3 -0.8/-0.2 -0.2/ 0.2 2 NONE
30/03 AM 9.9/10.4 0.4/ 0.9 -0.2/ 0.2 1 NONE
30/04 PM 8.6/ 9.1 -1.0/-0.5 -0.2/ 0.2 1 NONE
GLOUCESTER HARBOR
MLLW CATEGORIES - MINOR 12.0 FT, MODERATE 14.5 FT, MAJOR 15.5 FT
MHHW CATEGORIES - MINOR 2.5 FT, MODERATE 5.0 FT, MAJOR 6.0 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/03 AM 8.2/ 8.7 -1.4/-0.9 0.0/ 0.5 4 NONE
28/02 PM 10.3/10.8 0.8/ 1.3 -0.2/ 0.3 3 NONE
29/02 AM 11.2/11.7 1.7/ 2.2 -0.2/ 0.2 3 NONE
29/02 PM 10.0/10.5 0.5/ 1.0 -0.2/ 0.2 2-3 NONE
30/03 AM 11.0/11.5 1.5/ 2.0 -0.2/ 0.2 1-2 NONE
30/03 PM 9.7/10.2 0.2/ 0.7 -0.2/ 0.2 1 NONE
BOSTON HARBOR
MLLW CATEGORIES - MINOR 12.5 FT, MODERATE 15.0 FT, MAJOR 16.0 FT
MHHW CATEGORIES - MINOR 2.4 FT, MODERATE 4.9 FT, MAJOR 5.9 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/03 AM 8.7/ 9.2 -1.5/-1.0 -0.2/ 0.2 1 NONE
28/02 PM 10.8/11.3 0.7/ 1.1 -0.2/ 0.2 1 NONE
29/02 AM 11.8/12.3 1.7/ 2.2 -0.2/ 0.2 1 NONE
29/02 PM 10.6/11.1 0.5/ 1.0 -0.2/ 0.2 1 NONE
30/03 AM 11.5/12.0 1.4/ 1.9 -0.2/ 0.2 1 NONE
30/03 PM 10.2/10.7 0.1/ 0.6 -0.2/ 0.2 1 NONE
REVERE
MLLW CATEGORIES - MINOR 12.5 FT, MODERATE 15.0 FT, MAJOR 16.5 FT
MHHW CATEGORIES - MINOR 2.6 FT, MODERATE 5.1 FT, MAJOR 6.6 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/02 PM 10.7/11.2 0.8/ 1.3 -0.2/ 0.3 2-3 NONE
29/02 AM 11.7/12.2 1.8/ 2.2 -0.2/ 0.2 2 NONE
29/02 PM 10.5/11.0 0.6/ 1.1 -0.2/ 0.2 2 NONE
30/03 AM 11.4/11.9 1.5/ 2.0 -0.2/ 0.2 1 NONE
30/03 PM 10.1/10.6 0.2/ 0.7 -0.2/ 0.2 1 NONE
SCITUATE
MLLW CATEGORIES - MINOR 11.5 FT, MODERATE 14.0 FT, MAJOR 16.0 FT
MHHW CATEGORIES - MINOR 1.8 FT, MODERATE 4.3 FT, MAJOR 6.3 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/03 AM 8.2/ 8.7 -1.6/-1.1 -0.2/ 0.3 3 NONE
28/02 PM 10.1/10.6 0.4/ 0.9 -0.2/ 0.2 2 NONE
29/02 AM 11.2/11.7 1.5/ 2.0 -0.2/ 0.2 2 NONE
29/02 PM 10.0/10.5 0.2/ 0.8 -0.2/ 0.2 2 NONE
30/03 AM 11.1/11.6 1.4/ 1.9 -0.2/ 0.2 1 NONE
30/03 PM 9.7/10.2 0.0/ 0.5 -0.2/ 0.2 1 NONE
SANDWICH / DENNIS
MLLW CATEGORIES - MINOR 13.0 FT, MODERATE 14.0 FT, MAJOR 15.5 FT
MHHW CATEGORIES - MINOR 2.7 FT, MODERATE 3.7 FT, MAJOR 5.2 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/03 AM 8.7/ 9.2 -1.7/-1.2 0.1/ 0.6 1 NONE
28/02 PM 10.6/11.1 0.2/ 0.8 -0.2/ 0.3 1 NONE
29/02 AM 11.6/12.1 1.3/ 1.8 -0.2/ 0.2 1 NONE
29/02 PM 10.2/10.7 -0.2/ 0.3 -0.2/ 0.2 1 NONE
30/03 AM 11.3/11.8 1.0/ 1.5 -0.2/ 0.2 1 NONE
30/03 PM 9.9/10.4 -0.5/ 0.0 -0.2/ 0.2 1 NONE
PROVINCETOWN HARBOR
MLLW CATEGORIES - MINOR 12.5 FT, MODERATE 13.5 FT, MAJOR 15.0 FT
MHHW CATEGORIES - MINOR 2.4 FT, MODERATE 3.4 FT, MAJOR 4.9 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/03 AM 9.3/ 9.8 -0.9/-0.4 0.1/ 0.6 1 NONE
28/02 PM 11.1/11.6 1.0/ 1.5 -0.2/ 0.2 1 NONE
29/02 AM 12.1/12.6 2.0/ 2.5 -0.2/ 0.2 1 NONE
29/03 PM 10.8/11.3 0.7/ 1.1 -0.2/ 0.2 2 NONE
30/03 AM 11.8/12.3 1.7/ 2.2 -0.2/ 0.2 1 NONE
30/03 PM 10.4/10.9 0.2/ 0.8 -0.2/ 0.2 1 NONE
CHATHAM - EAST COAST
MLLW CATEGORIES - MINOR 9.5 FT, MODERATE 12.0 FT, MAJOR 13.0 FT
MHHW CATEGORIES - MINOR 1.8 FT, MODERATE 4.3 FT, MAJOR 5.3 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/03 AM 6.2/ 6.7 -1.6/-1.1 0.1/ 0.6 4 NONE
28/02 PM 5.6/ 6.1 -2.2/-1.7 -0.2/ 0.2 4 NONE
29/03 AM 6.6/ 7.1 -1.1/-0.7 -0.2/ 0.2 3 NONE
29/03 PM 5.6/ 6.1 -2.2/-1.7 -0.2/ 0.2 3 NONE
30/04 AM 6.5/ 7.0 -1.3/-0.8 -0.2/ 0.2 2 NONE
30/04 PM 5.4/ 5.9 -2.3/-1.9 -0.2/ 0.2 2 NONE
CHATHAM - SOUTH COAST
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
-------- --------- --------- --------- ------- --------
28/03 AM 4.0/ 4.5 -0.5/ 0.0 0.0/ 0.5 2 NONE
28/03 PM 3.7/ 4.2 -0.9/-0.4 -0.2/ 0.3 2 NONE
29/03 AM 4.4/ 4.9 -0.2/ 0.3 -0.2/ 0.2 2 NONE
29/04 PM 3.5/ 4.0 -1.1/-0.6 -0.2/ 0.2 2 NONE
30/04 AM 4.2/ 4.7 -0.2/ 0.2 -0.2/ 0.2 1 NONE
30/04 PM 3.5/ 4.0 -1.1/-0.6 -0.2/ 0.2 1 NONE
BUZZARDS BAY - 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
-------- --------- --------- --------- ------- --------
28/10 AM 2.7/ 3.2 0.7/ 1.1 0.0/ 0.5 1 NONE
28/11 PM 3.0/ 3.5 1.0/ 1.5 -0.2/ 0.2 1 NONE
29/11 AM 2.3/ 2.8 0.4/ 0.9 -0.2/ 0.2 1-2 NONE
30/12 AM 2.7/ 3.2 0.8/ 1.3 -0.2/ 0.2 1 NONE
30/12 PM 2.3/ 2.8 0.4/ 0.9 -0.2/ 0.3 1 NONE
01/01 AM 2.7/ 3.2 0.8/ 1.3 0.0/ 0.5 1 NONE
WINGS NECK
MLLW CATEGORIES - MINOR 6.5 FT, MODERATE 9.0 FT, MAJOR 11.5 FT
MHHW CATEGORIES - MINOR 2.2 FT, MODERATE 4.7 FT, MAJOR 7.2 FT
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/10 AM 4.7/ 5.2 0.5/ 1.0 0.1/ 0.6 1 NONE
28/11 PM 5.1/ 5.6 0.8/ 1.3 -0.2/ 0.3 1 NONE
29/11 AM 4.4/ 4.9 0.1/ 0.6 -0.2/ 0.3 1 NONE
29/11 PM 4.7/ 5.2 0.5/ 1.0 -0.2/ 0.2 1 NONE
30/12 PM 4.0/ 4.5 -0.2/ 0.2 -0.2/ 0.2 1 NONE
01/12 AM 4.7/ 5.2 0.4/ 0.9 0.0/ 0.5 1 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
-------- --------- --------- --------- ------- --------
28/03 AM 3.5/ 4.0 -0.2/ 0.3 0.0/ 0.5 2 NONE
28/03 PM 3.0/ 3.5 -0.7/-0.2 -0.2/ 0.2 2 NONE
29/03 AM 3.7/ 4.2 0.1/ 0.6 -0.2/ 0.2 2 NONE
29/04 PM 2.8/ 3.4 -0.8/-0.2 -0.2/ 0.2 2 NONE
30/04 AM 3.6/ 4.1 0.0/ 0.5 -0.2/ 0.2 2 NONE
30/05 PM 2.7/ 3.2 -0.9/-0.4 -0.2/ 0.2 1 NONE
NANTUCKET EAST COAST - EROSION IMPACTS
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/03 AM 3.9/ 4.4 -0.2/ 0.2 0.0/ 0.5 4 NONE
28/02 PM 3.5/ 4.0 -0.7/-0.2 -0.2/ 0.2 4 NONE
29/03 AM 4.0/ 4.5 0.0/ 0.5 -0.2/ 0.2 3 NONE
29/03 PM 3.4/ 3.9 -0.8/-0.2 -0.2/ 0.2 3-4 NONE
30/04 AM 4.0/ 4.5 0.0/ 0.5 -0.2/ 0.2 3 NONE
30/04 PM 3.2/ 3.7 -0.9/-0.4 -0.2/ 0.2 2 NONE
NANTUCKET - MADAKET AREA EROSION IMPACTS
TOTAL TOTAL DEPARTURE
DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD
FT MLLW FT MHHW FT FT IMPACT
-------- --------- --------- --------- ------- --------
28/03 AM 2.3/ 2.8 1.0/ 1.5 0.0/ 0.5 4 NONE
28/02 PM 2.2/ 2.7 0.9/ 1.4 -0.2/ 0.2 4 NONE
29/02 AM 2.7/ 3.2 1.3/ 1.8 -0.2/ 0.2 4 NONE
29/03 PM 2.2/ 2.7 0.9/ 1.4 -0.2/ 0.2 4 NONE
30/03 AM 2.7/ 3.2 1.3/ 1.8 -0.2/ 0.2 3 NONE
30/04 PM 2.2/ 2.7 0.8/ 1.3 -0.2/ 0.2 2 NONE
$$
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@NWSBOSTONWhat 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 Apr 27, 3:56 PM EDT, 3 minutes earlier.
Area forecast discussion, Apr 27, 3:56 PM EDT, 3 minutes before
Area Forecast Discussion
National Weather Service Taunton MA
356 PM EDT Thu Apr 27 2017
.SYNOPSIS...
Another mild night with some more patchy dense fog overnight
will lead to a mix of showers and isolated thunderstorms during
the morning. Warmer highs tomorrow will give way to another mild
night tomorrow night. A cold front crosses the region Saturday
night, bringing much cooler weather for Sunday, especially along
the coast. Another cold front will likely bring a period of
showers sometime Monday into Tuesday. Another storm may approach
New England late Thursday.
&&
.NEAR TERM /UNTIL 3 AM FRIDAY MORNING/...
A few breaks of sun have been observed across S New England
since late this morning thanks to the influence of some low-mid
lvl dry air and modest ridging as the upper lvl cutoff shifts E
and a secondary shortwave approaches from the W-NW late
tonight.
This clearing will be short lived however as a layer of SC
continues to spill through the W and into E portions of the
forecast area at the time of this writing, and with the sun
gradually setting there will be limited additional mixing to
help break these apart. Also, still a lot of marine stratus
evident offshore of the S coast as the mid lvl clouds have
cleared to reveal it. Therefore, with the encroachment of both
of these cloud banks this evening (the latter thanks to
developing S flow) expect another mild night with a lot of low
clouds across the area. Current dwpts in the mid-upper 50s
support lows only falling to the mid 50s especially as H92/H85
temps gradually warm thanks to return flow.
Within the stratus, marine fog also possible once again, but
this time likely limited more to the S coast initially. Will be
hoisting another Dense Fog Advisory for S coastal locations
which may need to be expanded depending on how efficiently it
is able to move inland with the S-SW flow. Not as confident
further inland, but overnight crew can monitor its progress. In
any case some clearing of this fog is likely toward the AM
commute time thanks to the influence of mechanical mixing with
the approaching SHRA (more on this below). Therefore, am capping
the end time of the current Dense Fog Advisory to 09Z (5AM
local).
&&
.SHORT TERM /3 AM FRIDAY MORNING THROUGH FRIDAY NIGHT/...
Early this morning and the daytime tomorrow...
Robust shortwave and attendant front will be approaching from
the W and crossing the region mainly between 09Z an 18Z, slowing
as it begins to parallel the W flow aloft, and possible
stalling somewhere near S coast CT/RI and MA by mid day. Lapse
rates are already going to be near 6.0C/km by the time of the
arrival of this front thanks to a mix of the low-lvl warming
with return flow and cooling in response to the approaching
shortwave. However initially, column is too dry. This is
remedied after 06Z as PWATs begin to approach 1.25-1.50 inches
or nearly 2 std deviations above normal. This will increase the
elevated CAPE profile such that MU Cape values by the time of
the approach are generally around 500j/kg and only increasing as
the front pushes E. Therefore, will continue to highlight the
risk for showers with embedded elevated TSRA between 08Z (4AM
local) and 15Z (11AM local) until drier air and subsidence
pushes into the W. Although 0-6km shear is marginal at around 40
kt, the lack of overall instability will limit the TSRA to
generally isolated and non-severe.
As the front settles near the S coast, it will be a race between
the drier air moving in from the W and NW and the remnant low-
lvl moisture which will become trapped beneath the encroaching
subsidence inversion. Although the drier air aloft and some
capping inversion development should limit the secondary
redevelopment of TSRA through the afternoon, am a bit concerned
with the front hanging nearby as a source for lift even though
it will be washing out given that lapse rates and CAPE profiles
remain somewhat elevated. Later shifts may want to re- evaluate
this threat. It is a low risk given the drying/subsidence
mentioned above, but it's something to watch and models are not
producing any QPF during the afternoon which is a typical red
flag.
Temps will be warmer tomorrow thanks in large part to clearing
and better mixing with the subsidence inversion across the W.
H85 temps are near +12C, which should allow for spots of upper
70s to low 80s. One caveat may be S coastal areas if the front
does indeed stall over land, as it could allow for the
continuation of some clouds much later into the day, limiting
the heating in spots along the coast of RI and SE MA. Current
highs may be too warm if this occurs.
Tomorrow night...
In spite of the spots of clearing during the evening, skies will
once again be increasing as yet another weak front approaches
from the W and winds shift to the SW once again. This should
limit mins overnight to the mid 50s widespread. Given the
lingering subsidence inversion will be holding POPs back until
after sunrise in W MA/CT for another round of SHRA.
&&
.LONG TERM /SATURDAY THROUGH THURSDAY/...
Big Picture...
Longwave pattern shows ridges off each coast with a trough over the
Midwest. Shortwave pattern shows three systems of interest in the
long term. The first is a shortwave racing across Quebec Saturday as
high pressure builds north from the ocean. The second is a broad
closed low over the Plains this weekend that ejects through the
Great Lakes Tuesday. Trailing shortwave energy from the North
Pacific generates a second closed low over the Plains midweek.
Model mass fields are similar through early next week with some
differences by midweek.
Details...
Saturday...
Shortwave crossing Eastern Canada driven by a 160 knot upper jet.
Upper venting along this jet seems focused over Northern New
England through the day although some signs of it shifting to
the northern MA border by evening. Axis of the shortwave passes
late aftn/evening with signs of a surface wind shift over Srn
New England 18Z-24Z. Stability parameters show 500-1000 J/Kg and
totals of 48- 50. Precip water values are forecast to reach 1.6
inches, well above normal for the end of April.
With the best forcing to our north, we will mention scattered
showers N/W of I-495/I-84 and include a risk of thunder. Could be a
few heavier showers embedded in any wet weather. Mixing to 900 mb
and possibly 850 mb, which could bring down wind gusts of 20-25
knots. Temps in the mixed layer support max sfc temps in the upper
70s and low 80s.
Saturday night through Sunday night...
High pressure builds south from Canada Saturday night bringing drier
weather, but also a trend to an east wind on Sunday. This will keep
temps cooler near the eastern coast while warmest temps will be in
the CT Valley. Expect a lower mixed layer Sunday, but temps near 925
mb should support interior sfc temps reaching the mid and possibly
upper 60s while the coast is in the mid 50s.
Winds turn from the south Sunday night as warmer air moves north.
This leading edge of warm air may generate low clouds and drizzle
and possibly a few light showers.
Monday-Tuesday...
Broad closed low over the Plains ejects through the Great Lakes.
This system will sweep a cold front through New England Tuesday
morning. Strong low level southwest jets develop, one inland ahead
of the main low...and the second along the coast. The coastal jet
begins to affect our area early Monday with a 65 knot core moving up
across the South Coast and Islands by Monday night. Expect showers,
especially Monday night and Tuesday morning. Precip water values
climb to 1.7 inches, quite high for early May, and may contribute a
few locally heavy downpours. Stability parameters also suggest
potential for a thunderstorm.
Wednesday-Thursday...
High pressure builds over the region with mainly dry weather. Upper
shortwave and cold temps aloft may generate diurnal clouds
Wednesday. Models show another Plains low spreading clouds and
precip our way but with 18-24 hour differences in timing. For now we
will show chance pops developing from the southwest Thursday evening
and spreading across the region overnight. But this timing is low
confidence and will need to be monitored.
&&
.AVIATION /19Z THURSDAY THROUGH TUESDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Short Term /through Friday Night/...
Through 00Z...Moderate confidence.
A few breaks of VFR this afternoon will give way to widespread
MVFR CIGS by 20Z. The CIGS gradually lower again this evening to
IFR by around 00Z. Winds outside of lingering sea breezes shift
mainly S-SW.
Overnight...Moderate confidence.
IFR/LIFR conditions in another mix of low CIGS and fog. Fog
likely not as widespread as last night, and should mainly be
focus around the S coast of MA/RI and possibly snaking up the
CT Valley late. In any fog LIFR vsbys possible at times. Some
showers and isolated TSRA possible mainly between 09Z and 14Z
from W-E. This will help improve conditions to mainly IFR.
Tomorrow and tomorrow night...High confidence in trends, but
lower confidence in exact timing in TAF.
IFR/MVFR CIGS and fog, along with showers and isolated
thunderstorms end between 12Z and 16Z in the morning, with
fairly rapid improvement to VFR in clearing. Winds turn W, with
gusts to 15 kt at times. VFR continues into the overnight thanks
to W winds, although there is a low risk for showers, but mainly
after daybreak Sat.
KBOS TAF...Moderate confidence in TAF. IFR conditions expected
overnight, but lower confidence in the LIFR risk.
KBDL TAF...Moderate confidence in TAF. Timing may be off. There
is also a low risk for LIFR fog late this evening and early
tomorrow morning.
Outlook /Saturday through Tuesday/... Moderate confidence.
Saturday... Moderate-High confidence.
Mainly VFR, but with brief MVFR cigs/vsbys in showers and isolated
thunderstorms in the afternoon/evening.
Sunday... High confidence.
VFR.
Sunday night to Tuesday... Moderate confidence.
MVFR/IFR cigs/vsbys in low clouds/drizzle and light showers Sunday
night. VFR and areas of MVFR in showers Monday and Tuesday.
Possible low level wind shear especially over RI and SE Mass Monday
night and Tuesday morning.
&&
.MARINE...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Short Term /through Friday Night/...High confidence.
Small Craft Advisories will remain in effect mainly over the
offshore waters through tomorrow night as a lingering 5-7ft
swell remains. Winds shifting from S tonight to W during the
day tomorrow then back to the SW tomorrow night should remain
below the 25 kt threshold through the period.
Otherwise, another round of overnight dense fog across the
waters tonight and again tomorrow night. A low risk for a few
thundershowers moving offshore during the morning tomorrow.
Outlook /Saturday through Tuesday/... Moderate confidence.
Saturday-Sunday...
West winds remain less than 25 knots. Seas briefly near 5 feet on
the southern outer waters Saturday.
Monday-Tuesday...
Cold front approaches Monday and crosses the waters Tuesday. This
will bring showers and possibly a thunderstorm Monday night and
Tuesday. Seas build to 5-8 feet on the outer waters and exposed
southern waters. Expect increasing southwest winds with gusts to at
least 25 knots Tuesday. There is low potential for gale force gusts
to reach down to the waters Monday night and Tuesday. Absent the
development of southwest gales, a Small Craft Advisory may be
needed.
&&
.TIDES/COASTAL FLOODING...
* Isolated minor coastal flooding impacts during astronomically
high tide tonight along the east coasts
The astronomical high tides remain very elevated through the
end of the week.
Given a lingering swell offshore and its remnant surge, with
high tide values only a few tenths shy of typical minor flooding
levels, will be issuing a Coastal Flood Statement for the high
tide near midnight tonight for east coastal locations. At this
time we anticipate only minimal impacts at typically prone
locations.
Also, due to the breadth of the fetch, we may encounter enough
wave action with lengthening periods on top of an elevated tide
to cause pockets of erosion tonight along the Martha's Vineyard
south coast, Nantucket south and east coasts, and the outer Cape
ocean side from Truro to Chatham.
Boston High Tides (flood stage at Boston 12.5 feet)...
12.15 feet / Friday 12:15 am
Providence High Tides (flood stage at Providence 7 feet)...
6.25 feet / Thursday 9:50 pm
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...Dense Fog Advisory from 8 PM this evening to 5 AM EDT Friday
for MAZ020>024.
RI...Dense Fog Advisory from 8 PM this evening to 5 AM EDT Friday
for RIZ005>008.
MARINE...Small Craft Advisory until 8 PM EDT Friday for ANZ235-237.
Small Craft Advisory until 11 PM EDT Friday for ANZ250.
Small Craft Advisory until 2 AM EDT Saturday for ANZ254>256.
&&
SYNOPSIS...WTB/Doody
NEAR TERM...Doody
SHORT TERM...Doody
LONG TERM...WTB
AVIATION...WTB/Doody
MARINE...WTB/Doody
TIDES/COASTAL FLOODING...staffHazardous weather outlook, Apr 27, 7:58 AM EDT, 8 hours 1 minute before
Hazardous Weather Outlook National Weather Service Taunton MA 758 AM EDT Thu Apr 27 2017 CTZ002>004-MAZ002>006-008>014-017-018-026-RIZ001>003-281200- Hartford CT-Tolland CT-Windham CT-Western Franklin MA- Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA- Western Essex MA-Western Hampshire MA-Western Hampden MA- Eastern Hampshire MA-Eastern Hampden MA-Southern Worcester MA- Western Norfolk MA-Southeast Middlesex MA-Northern Bristol MA- Western Plymouth MA-Northern Middlesex MA-Northwest Providence RI- Southeast Providence RI-Western Kent RI- 758 AM EDT Thu Apr 27 2017 This Hazardous Weather Outlook is for northern Connecticut, central Massachusetts, eastern Massachusetts, northeastern Massachusetts, southeastern Massachusetts, western Massachusetts and northern Rhode Island. .DAY ONE...Today and Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. MAZ007-015-016-019>024-RIZ004>008-281200- Eastern Essex MA-Suffolk MA-Eastern Norfolk MA-Eastern Plymouth MA- Southern Bristol MA-Southern Plymouth MA-Barnstable MA-Dukes MA- Nantucket MA-Eastern Kent RI-Bristol RI-Washington RI-Newport RI- Block Island RI- 758 AM EDT Thu Apr 27 2017 This Hazardous Weather Outlook is for eastern Massachusetts, northeastern Massachusetts, southeastern Massachusetts, northern Rhode Island and southern Rhode Island. .DAY ONE...Today and Tonight. High astronomical tides continue. Will need to monitor the possibility of minor coastal flooding during the time of high tide late this morning, and again late this evening. Minor splashover and beach erosion are more likely during the late evening tide. However, a few locations along the east coast of Massachusetts will get quite close even this morning. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. ANZ230>237-250-251-254>256-281200- 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- 758 AM EDT Thu Apr 27 2017 This Hazardous Weather Outlook is for Massachusetts and Rhode Island coastal waters. .DAY ONE...Today and Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/NWSBoston 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 |
|---|---|---|---|---|
| Apr 27, 3:52 PM EDT | Dense Fog Advisory | BOX | Barnstable, Bristol, Dukes, Nantucket, Plymouth | 17 hr |
Nearby
Coastal Flood Statements in Massachusetts, 2017Every coastal flood statement in 2017
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.