Alert archive / Massachusetts / High Wind Watches in 2018

High Wind Watch 6, NWS Boston/Norton, MA

November 2, 201813 counties in Massachusetts; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; 5 counties in Rhode Island

NWS Boston/Norton, MA issued this high wind watch at Nov 2, 2018, 4:35 AM EDT for 13 counties in Massachusetts; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; 5 counties in Rhode Island. It took effect at Nov 3, 2018, 2:00 PM EDT. It was in force for .

The area

The counties it named.

The facts

Issued
Nov 2, 2018, 4:35 AM EDT (08:35 UTC)
In effect from
Nov 3, 2018, 2:00 PM EDT
Expired
Nov 2, 2018, 2:40 PM EDT
In force
Issued by
NWS Boston/Norton, MA

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Barnstable County, MA, Bristol County, MA, Dukes County, MA, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Nantucket County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI

The radar

The Boston radar (KBOX), 26 km from the middle of the area, began a volume at 08:38 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 00:00Z, 8.6 hours before the alert went out and 127 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.

Skew-T log-pSkew-T log-p diagram, Chatham, MA at 00:00Z on 2018-11-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 00:00Z on 2018-11-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1172 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
139 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

554 
WWUS71 KBOX 020835
NPWBOX

URGENT - WEATHER MESSAGE
National Weather Service Boston/Norton MA
435 AM EDT Fri Nov 2 2018

MAZ022>024-RIZ008-021645-
/O.NEW.KBOX.HW.A.0006.181103T1800Z-181104T0000Z/
Barnstable MA-Dukes MA-Nantucket MA-Block Island RI-
Including the cities of Chatham, Falmouth, Provincetown, 
Vineyard Haven, Nantucket, and New Shoreham
435 AM EDT Fri Nov 2 2018

...HIGH WIND WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING...

The National Weather Service in Boston/Norton has issued a High
Wind Watch, which is in effect from Saturday afternoon through
Saturday evening.

* WINDS...West 20 to 25 mph with gusts up to 60 mph.

* TIMING...Saturday afternoon through Saturday evening. 

* IMPACTS...Strong winds may blow down limbs, trees, and power 
  lines. Scattered power outages are expected.

* LOCATION...Cape Cod and southeast islands of Massachusetts and
  Rhode Island. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means the potential exists for a damaging wind
event. These strong winds are capable of downing trees and power
lines, as well causing property damage. If a high wind warning is
issued, stay inside and away from windows.

&&

$$

MAZ005>007-013>021-RIZ001>007-021645-
/O.NEW.KBOX.HW.A.0006.181103T1800Z-181104T0000Z/
Central Middlesex MA-Western Essex MA-Eastern Essex MA-
Western Norfolk MA-Southeast Middlesex MA-Suffolk MA-
Eastern Norfolk MA-Northern Bristol MA-Western Plymouth MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Eastern Kent RI-Bristol RI-Washington RI-Newport RI-
Including the cities of Framingham, Lowell, Lawrence, Gloucester,
Foxborough, Norwood, Cambridge, Boston, Quincy, Taunton, 
Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, 
Foster, Smithfield, Providence, Coventry, West Greenwich, 
East Greenwich, Warwick, West Warwick, Bristol, Narragansett, 
Westerly, and Newport
435 AM EDT Fri Nov 2 2018

...HIGH WIND WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING...

The National Weather Service in Boston/Norton has issued a High
Wind Watch, which is in effect from Saturday afternoon through
Saturday evening.

* WINDS...West 15 to 20 mph with gusts up to 60 mph.

* TIMING...Saturday afternoon through Saturday evening. 

* IMPACTS...Strong winds may blow down limbs, trees, and power 
  lines. Scattered power outages are expected.

* LOCATION...eastern Massachusetts and Rhode Island. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means the potential exists for a damaging wind
event. These strong winds are capable of downing trees and power
lines, as well causing property damage. If a high wind warning is
issued, stay inside and away from windows.

&&

$$

CTZ002>004-MAZ002>004-008>012-026-021645-
/O.NEW.KBOX.HW.A.0006.181103T1800Z-181104T0000Z/
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-
Eastern Franklin MA-Northern Worcester MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Northern Middlesex MA-
Including the cities of Hartford, Windsor Locks, Union, Vernon, 
Putnam, Willimantic, Charlemont, Greenfield, Orange, Barre, 
Fitchburg, Chesterfield, Blandford, Amherst, Northampton, 
Springfield, Milford, Worcester, and Ayer
435 AM EDT Fri Nov 2 2018

...HIGH WIND WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING...

The National Weather Service in Boston/Norton has issued a High
Wind Watch, which is in effect from Saturday afternoon through
Saturday evening.

* WINDS...West 10 to 20 mph with gusts up to 60 mph.

* TIMING...Saturday afternoon through Saturday evening. 

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be 
  difficult, especially for high profile vehicles.

* LOCATION...western and central Massachusetts and northern 
  Connecticut. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means the potential exists for a damaging wind
event. These strong winds are capable of downing trees and power
lines, as well causing property damage. If a high wind warning is
issued, stay inside and away from windows.

&&

$$

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
2 follow-up statements
899 
WWUS71 KBOX 021319
NPWBOX

URGENT - WEATHER MESSAGE
National Weather Service Boston/Norton MA
919 AM EDT Fri Nov 2 2018

MAZ022>024-RIZ008-022130-
/O.CON.KBOX.HW.A.0006.181103T1800Z-181104T0000Z/
Barnstable MA-Dukes MA-Nantucket MA-Block Island RI-
Including the cities of Chatham, Falmouth, Provincetown, 
Vineyard Haven, Nantucket, and New Shoreham
919 AM EDT Fri Nov 2 2018

...HIGH WIND WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING...

* WINDS...West 20 to 30 mph with gusts up to 60 mph.

* TIMING...Saturday afternoon through Saturday evening.

* IMPACTS...Strong winds may blow down limbs, trees, and power 
  lines. Scattered power outages are expected.

* LOCATION...Cape Cod and southeast islands of Massachusetts and 
  Rhode Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means the potential exists for a damaging wind
event. These strong winds are capable of downing trees and power
lines, as well causing property damage. If a high wind warning is
issued, stay inside and away from windows.

&&

$$

MAZ005>007-013>021-RIZ001>007-022130-
/O.CON.KBOX.HW.A.0006.181103T1800Z-181104T0000Z/
Central Middlesex MA-Western Essex MA-Eastern Essex MA-
Western Norfolk MA-Southeast Middlesex MA-Suffolk MA-
Eastern Norfolk MA-Northern Bristol MA-Western Plymouth MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Eastern Kent RI-Bristol RI-Washington RI-Newport RI-
Including the cities of Framingham, Lowell, Lawrence, Gloucester,
Foxborough, Norwood, Cambridge, Boston, Quincy, Taunton, 
Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, 
Foster, Smithfield, Providence, Coventry, West Greenwich, 
East Greenwich, Warwick, West Warwick, Bristol, Narragansett, 
Westerly, and Newport
919 AM EDT Fri Nov 2 2018

...HIGH WIND WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING...

* WINDS...West 20 to 30 mph with gusts up to 60 mph.

* TIMING...Saturday afternoon through Saturday evening.

* IMPACTS...Strong winds may blow down limbs, trees, and power 
  lines. Scattered power outages are expected.

* LOCATION...eastern Massachusetts and Rhode Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means the potential exists for a damaging wind
event. These strong winds are capable of downing trees and power
lines, as well causing property damage. If a high wind warning is
issued, stay inside and away from windows.

&&

$$

CTZ002>004-MAZ002>004-008>012-026-022130-
/O.CON.KBOX.HW.A.0006.181103T1800Z-181104T0000Z/
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-
Eastern Franklin MA-Northern Worcester MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Northern Middlesex MA-
Including the cities of Hartford, Windsor Locks, Union, Vernon, 
Putnam, Willimantic, Charlemont, Greenfield, Orange, Barre, 
Fitchburg, Chesterfield, Blandford, Amherst, Northampton, 
Springfield, Milford, Worcester, and Ayer
919 AM EDT Fri Nov 2 2018

...HIGH WIND WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING...

* WINDS...West 20 to 30 mph with gusts up to 60 mph.

* TIMING...Saturday afternoon through Saturday evening.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be 
  difficult, especially for high profile vehicles.

* LOCATION...western and central Massachusetts and northern 
  Connecticut.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means the potential exists for a damaging wind
event. These strong winds are capable of downing trees and power
lines, as well causing property damage. If a high wind warning is
issued, stay inside and away from windows.

&&

$$

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
700 
WWUS71 KBOX 021840
NPWBOX

URGENT - WEATHER MESSAGE
National Weather Service Boston/Norton MA
240 PM EDT Fri Nov 2 2018

MAZ022>024-RIZ008-030245-
/O.UPG.KBOX.HW.A.0006.181103T1800Z-181104T0000Z/
/O.NEW.KBOX.HW.W.0011.181103T1600Z-181103T2300Z/
Barnstable MA-Dukes MA-Nantucket MA-Block Island RI-
Including the cities of Chatham, Falmouth, Provincetown, 
Vineyard Haven, Nantucket, and New Shoreham
240 PM EDT Fri Nov 2 2018

...HIGH WIND WARNING IN EFFECT FROM NOON TO 7 PM EDT SATURDAY...

The National Weather Service in Boston/Norton has issued a High
Wind Warning, which is in effect from noon to 7 PM EDT Saturday.
The High Wind Watch is no longer in effect.

* WINDS...West 20 to 30 mph with gusts between 50 and 60 mph.

* TIMING...Saturday afternoon through early Saturday evening.

* IMPACTS...Strong winds will result in some downed trees and tree
  limbs, along with scattered power outages.

* LOCATION...Cape Cod and the Islands.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning is issued when sustained winds of 40 mph are
expected for at least one hour, with gusts of 58 mph or greater
at any time. Damage to trees, power lines, and property are
possible with winds of this magnitude. Power outages are likely.
Take action to secure loose outdoor objects.

&&

$$

MAZ004>007-012>016-026-030245-
/O.UPG.KBOX.HW.A.0006.181103T1800Z-181104T0000Z/
/O.NEW.KBOX.HW.W.0011.181103T1600Z-181103T2300Z/
Northern Worcester MA-Central Middlesex MA-Western Essex MA-
Eastern Essex MA-Southern Worcester MA-Western Norfolk MA-
Southeast Middlesex MA-Suffolk MA-Eastern Norfolk MA-
Northern Middlesex MA-
Including the cities of Barre, Fitchburg, Framingham, Lowell, 
Lawrence, Gloucester, Milford, Worcester, Foxborough, Norwood, 
Cambridge, Boston, Quincy, and Ayer
240 PM EDT Fri Nov 2 2018

...HIGH WIND WARNING IN EFFECT FROM NOON TO 7 PM EDT SATURDAY...

The National Weather Service in Boston/Norton has issued a High
Wind Warning, which is in effect from noon to 7 PM EDT Saturday.
The High Wind Watch is no longer in effect.

* WINDS...West 20 to 30 mph with gusts between 50 and 60 mph.

* TIMING...Saturday afternoon through early Saturday evening.

* IMPACTS...Strong winds will result in some downed trees and 
  tree limbs, along with scattered power outages.

* LOCATION...Central and northeast Massachusetts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning is issued when sustained winds of 40 mph are
expected for at least one hour, with gusts of 58 mph or greater
at any time. Damage to trees, power lines, and property are
possible with winds of this magnitude. Power outages are likely.
Take action to secure loose outdoor objects.

&&

$$

CTZ002>004-MAZ002-003-008>011-017>021-RIZ001>007-030245-
/O.UPG.KBOX.HW.A.0006.181103T1800Z-181104T0000Z/
/O.NEW.KBOX.WI.Y.0022.181103T1600Z-181103T2300Z/
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-
Eastern Franklin MA-Western Hampshire MA-Western Hampden MA-
Eastern Hampshire MA-Eastern Hampden MA-Northern Bristol MA-
Western Plymouth MA-Eastern Plymouth MA-Southern Bristol MA-
Southern Plymouth MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-Eastern Kent RI-
Bristol RI-Washington RI-Newport RI-
Including the cities of Hartford, Windsor Locks, Union, Vernon, 
Putnam, Willimantic, Charlemont, Greenfield, Orange, 
Chesterfield, Blandford, Amherst, Northampton, Springfield, 
Taunton, Brockton, Plymouth, Fall River, New Bedford, 
Mattapoisett, Foster, Smithfield, Providence, Coventry, 
West Greenwich, East Greenwich, Warwick, West Warwick, Bristol, 
Narragansett, Westerly, and Newport
240 PM EDT Fri Nov 2 2018

...WIND ADVISORY IN EFFECT FROM NOON TO 7 PM EDT SATURDAY...

The National Weather Service in Boston/Norton has issued a Wind
Advisory, which is in effect from noon to 7 PM EDT Saturday. The
High Wind Watch is no longer in effect.

* WINDS...West 15 to 30 mph with gusts between 45 and 55 mph.

* TIMING...Saturday afternoon through Saturday evening.

* IMPACTS...Strong winds result in some downed trees, tree limbs
  and scattered power outages.

* LOCATION...Western as well as southeast Massachusetts, northern
  Connecticut, and Rhode Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that sustained winds of 31 to 39 mph are
expected, with gusts between 46 to 57 mph. Winds this strong are
capable of downing small tree limbs and branches, possibly
causing isolated power outages. Driving can also be difficult,
especially for high profile vehicles. Use extra caution.

&&

$$

Frank

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

What forecasters said that day

The local office's own words before this high wind watch 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 high wind watch went out at Nov 2, 4:20 AM EDT, 15 minutes earlier.

Area forecast discussion, Nov 2, 4:20 AM EDT, 15 minutes before
Area Forecast Discussion
National Weather Service Boston/Norton MA
420 AM EDT Fri Nov 2 2018

.SYNOPSIS...
A couple waves of low pressure will bring periods of showers with
locally heavy rainfall today into Saturday morning along with
mild temperatures. The rain ends Saturday afternoon, but will be
followed by a period of strong to damaging wind gusts Saturday
afternoon and early evening. Sunday will be the pick of the
weekend with high pressure providing light winds, dry weather
and highs in the 50s. Cool weather continues through Tuesday
with wet weather anticipated. Another round of wet weather,
possible thunderstorms, is forecast Wednesday. Cool, dry weather
follows thereafter.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...

Today...

Impressive short wave entering the OH valley early this morning per
latest GOES16 water vapor imagery. Attending surface wave/parent low
pressure is now in southwest PA and will move northeast into NY
state today.  However models have now trended weaker with this
system as short wave trough shows signs of deamplification. Thus
none of the model guidance is showing heavy qpf over southern New
England. Now we can't rule out brief heavy downpours later this
morning given PWATs climbing to 1.75 inches over the area combined
with weak instability and forcing. However the threat of widespread
heavy rain has diminished. In fact even the convective threat has
lowered as model advects deep layer dry into the 700-500 mb column
this afternoon. While some dry air steepens mid level lapse rates
the depth of dry air this afternoon over the region appears too deep
to support severe storms and will limit convective chances. The more
likely scenario looks to be periods of rain this morning as warm
front lifts northward across the area, then somewhat of drying trend
this afternoon.

Regarding temps, impressive warm sector with 925 mb temps surging to
+16C over the region today along with dew pts in the 60s. These
temps aloft would support highs in the 70s if any sunshine were to
develop. However abundant low level moisture in the warm sector will
yield a low overcast, especially this morning in showers and
drizzle. Nonetheless this airmass with high dew pts will yield highs
well into the 60s regionwide.

It will become windy in the coastal plain including Providence to
Boston. However the strongest winds will along the immediate south
coast of MA/RI including Cape Cod and the Islands with sustain winds
of 25-35 mph. Model soundings are inverted which should preclude
stronger winds aloft from mixing to the surface.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SATURDAY/...

Tonight and Saturday...

Highlights...

* Strong to damaging wind gusts likely Sat afternoon/eve
* Heavy rain/localized flood threat tonight into Sat AM

Details...

Tonight into Saturday...

An active 24 hours of weather is in store for the region beginning
tonight into Saturday. The main concern is for very strong to
damaging winds Saturday afternoon behind a departing cold front.  A
secondary concern with greater uncertainty is the low risk flash
flooding. Here are the details...

1) Very Strong to Damaging Wind Potential...

A wave of low pressure will intensify rapidly over the region
Saturday as a potent short wave trough becomes negatively tilted.
The wave deepens rapidly, 15 mbs in 12 hrs from a 1002 mb low over
MA to a 987 low over ME by late Sat. This rapid intensification is
accompanied by a very strong pressure rise-fall couplet that will
enhance the isallobaric wind component. Strong cold air advection
behind the wave steepens low level lapse rates with both NAM and GFS
bufkit model soundings indicating multiple hours of 50+kt wind gusts.
Thus will hoist a high wind watch Saturday afternoon from 2 pm to 8
pm for the entire region. Winds of this magnitude combined with
fully to partially leaved trees (especially southwest MA) increases
the risk for down tree limbs and resulting isolated power outages.
Greatest risk for damaging winds appears across eastern MA, Cape
Cod, the Islands, RI and into the Worcester Hills.

2) Heavy Rain/Localized Flood Threat:

PWATs and wind anomalies of +2 to +3 SD combined with strong frontal
convergence will result in bands of heavy showers tonight into
Saturday morning along and ahead of approaching frontal wave. Good
model consensus on a widespread 1-2" rainfall event. However given
strong frontal convergence combined with some weak instability there
is a risk for narrow bands of convection with heavier rainfall totals
up to 3 to perhaps 4 inches. However given uncertainty on these
mesoscale bands/higher totals decided to hold off on a flood watch
for the moment. However will have to see how later model runs trend.
Nonetheless expect at least nuisance type street and highway
flooding.

Temps...mild weather continues as warm sector remains over the area.
Dramatic temperature drop Saturday with much of RI and eastern MA
beginning the day in the 60s but temps dropping rapidly behind the
front with temps in the 40s by days end along with very strong WNW
winds making it feel much colder.

&&

.LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/...

*Dry and sunny Sunday
*Wet Monday into Tuesday
*Showers and t-storms possible by mid week

Overview...

The low exits to the north Saturday night leaving us under the
influence of a large surface high and upper level ridge on Sunday
bringing dry and colder conditions. By Monday a shortwave moves
through bringing the return of rain chances. Tuesday we get a brief
break before the next significant frontal system moves through
bringing widespread rain and thunderstorm chances  Tuesday night and
Wednesday. Beyond that flow becomes zonal with quiet weather under a
building surface high.

Saturday night and Sunday...

By Saturday night the low pressure system exits northern New
England, taking the strong LLJ with it and relaxing the surface
pressure gradient. This will lead to gradually diminishing west
winds overnight into early Sunday morning. Heights are on the rise
Sunday as a surface high pressure builds into the northeast,
centered over SNE by Sunday afternoon. This will be the best day of
the weekend/early week with a dry atmospheric column allowing sunny
skies but with highs about 10 degrees cooler than Saturday, in the
low to mid 50s.

Monday and Tuesday...

Compared to 24 hours ago model runs have sped up the progression of
the next mid level shortwave for the first part of the week, meaning
Monday looks wetter than previously indicated. Sunday night mid and
upper level moisture increases and clouds move in ahead of the
precip. By early Monday PWATs increase to over and inch from the
south. This with forcing from the mid level vort max, RRQ of the
upper jet, and a marginal 30 kt LLJ will bring rain chances Monday,
lesser on Tuesday. Not expecting significant QPF amounts with this
system, on the order a few tenths to three quarters of an inch.
Still a good amount of uncertainty in this regard.

Wednesday and Thursday...

By Tuesday night/early Wednesday a stronger shortwave trough swings
through associated with a surface low pressure system moving north
of the Great Lakes region. This brings a warm front and widespread
rain chances Tuesday night ahead of the cold front which swings
through sometime Wednesday, though confidence on timing is low. At
the moment models do indicate potential for some thunderstorm
activity, especially along the southern half of the forecast areas
where instability is greatest. With dewpoints approaching 60 and a
potent LLJ moving it will be something to monitor for the potential
of strong to severe storms. Additionally, post frontal winds
Wednesday night and Thursday look quite gusty. Dry but windy
conditions possible.

&&

.AVIATION /08Z FRIDAY THROUGH TUESDAY/...
Forecaster Confidence Levels...

Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

Short Term /through Saturday/...Moderate to high confidence.

06z update...

Today...

Warm front along south coast of MA/RI will lift north today with
N-NE winds becoming south by afternoon all terminals. IFR/LIFR
with VFR conditions along south coast trending toward MVFR/IFR.
Showers become widespread later this morning then a drying trend
this afternoon. South winds increase to 20-30 kt along the south
coast including Cape Cod and Islands. However 60 kt low level
jet supports LLWS today across southern terminals. Any
thunderstorms should be very isolated.

Tonight...

IFR/LIFR continue with second round of showers and embedded
thunder. Rain will be heavy at times. Gusty winds continue along
south coast including Cape Cod and Islands. LLWS persist as well
especially RI and eastern MA terminals.

Saturday...

Strong cold front sweeps across the area from late morning into
the early afternoon. LLWS in the morning transitions to south
winds shifting to the WNW and becoming very gusty 18z-00z with
gusts up to 50 kt possible! Morning IFR/LIFR improves to
MVFR/VFR during the afternoon. Scattered morning showers with
embedded thunder gives way to dry weather in the afternoon.

KBOS Terminal...
IFR/LIFR persist into Saturday morning. Widespread showers later
this morning followed by a drying trend this afternoon. Heavier
showers tonight into Sat morning along with embedded thunder.
Sharp wind shift Saturday afternoon with frontal passage. WNW
winds may gust up to 50 kt Sat 18z-00z!!

KBDL Terminal...
IFR persist into Saturday morning. Widespread showers later
this morning followed by a drying trend this afternoon. Heavier
showers tonight into Sat morning along with embedded thunder.
Sharp wind shift late Sat morning into early afternoon with
frontal passage. WNW winds may gust up to 45 kt Sat 16z-22z!!

Outlook /Saturday Night through Tuesday/...

Saturday Night: VFR. Strong winds with gusts to 55 kt.

Sunday: VFR. Breezy.

Sunday Night: Mainly VFR, with local MVFR possible.

Monday: Mainly MVFR, with areas VFR possible. Breezy. Chance
SHRA.

Monday Night: Mainly MVFR, with local IFR possible. Breezy.
Chance SHRA.

Tuesday: Mainly MVFR, with local IFR possible. Chance SHRA.

&&

.MARINE...
Forecaster Confidence Levels...

Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

Short Term /through Saturday/...Moderate to high confidence.

*** Storm Watch Saturday ***

Short Term /through Saturday/...Moderate to high confidence.

Today...

Southwest winds increasing to 20-30 kt today from south to north
with strong winds over southern waters. Low risk for a few gusts
to 35 kt. Showers this morning become less numerous this afternoon.

Tonight...

S-SW winds initial slacken a bit this evening but quickly ramp up
again to 20-30 kt with a few gusts up to 35 kt possible. Showers
become more widespread as the night progresses.

Saturday...

Low pressure intensifies rapidly from MA to ME. Winds increase
dramatically with the wind shift from south to west with gusts in
the afternoon and evening up to 50 kt possible. Thus Storm Watches
have been posted. Heavy showers and isolated thunder in the morning
result in poor vsby but improving with the wind shift.

Outlook /Saturday Night through Tuesday/...

Saturday Night: Low risk for gale force winds with gusts up to
45 kt. Rough seas up to 14 ft.

Sunday: Winds less than 25 kt. Local rough seas.

Sunday Night: Winds less than 25 kt. Seas locally approaching
5 ft.

Monday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Chance of rain showers.

Monday Night: Winds less than 25 kt. Seas up to 5 ft. Chance of
rain showers.

Tuesday: Winds less than 25 kt. Local rough seas. Chance of
rain showers.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...High Wind Watch from Saturday afternoon through Saturday
     evening for CTZ002>004.
MA...High Wind Watch from Saturday afternoon through Saturday
     evening for MAZ002>024-026.
RI...High Wind Watch from Saturday afternoon through Saturday
     evening for RIZ001>008.
MARINE...Storm Watch from Saturday afternoon through Saturday evening
     for ANZ230>237-250-251-254>256.

&&

SYNOPSIS...Nocera/BW
NEAR TERM...Nocera
SHORT TERM...Nocera
LONG TERM...BW
AVIATION...Nocera/BW
MARINE...Nocera/BW
Hazardous weather outlook, Nov 2, 4:17 AM EDT, 18 minutes before
Hazardous Weather Outlook
National Weather Service Boston/Norton MA
417 AM EDT Fri Nov 2 2018

CTZ002>004-MAZ002>021-024-026-RIZ001>008-030830-
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-
Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA-
Western Essex MA-Eastern Essex MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA-
Suffolk MA-Eastern Norfolk MA-Northern Bristol MA-
Western Plymouth MA-Eastern Plymouth MA-Southern Bristol MA-
Southern Plymouth MA-Nantucket MA-Northern Middlesex MA-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Eastern Kent RI-Bristol RI-Washington RI-Newport RI-Block Island RI-
417 AM EDT Fri Nov 2 2018

...HIGH WIND WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING...

This Hazardous Weather Outlook is for northern Connecticut, central
Massachusetts, eastern Massachusetts, northeastern Massachusetts,
southeastern Massachusetts, western Massachusetts, and Rhode Island.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   High Wind Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ230-234-236-251-030830-
Boston Harbor-Buzzards Bay-Narragansett Bay-
Massachusetts Bay and Ipswich Bay-
417 AM EDT Fri Nov 2 2018

...STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY
EVENING...

This Hazardous Weather Outlook is for Massachusetts coastal waters
and Rhode Island coastal waters.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Storm Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ231>233-235-237-250-254>256-030830-
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Rhode Island Sound-
Block Island Sound-
Coastal waters east of Ipswich Bay and the Stellwagen Bank National
Marine Sanctuary-
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-
417 AM EDT Fri Nov 2 2018

...STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY
EVENING...

This Hazardous Weather Outlook is for Massachusetts coastal waters
and Rhode Island coastal waters.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Storm Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ022-023-030830-
Barnstable MA-Dukes MA-
417 AM EDT Fri Nov 2 2018

...HIGH WIND WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING...

This Hazardous Weather Outlook is for southeastern Massachusetts.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   High Wind Watch.

.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.

IssuedProductOfficeCountiesLasted
Nov 2, 4:40 AM EDTStorm WatchBOX10 hr
Nov 2, 2:40 PM EDTHigh Wind WarningBOXBarnstable, Dukes, Essex, Middlesex, Nantucket, Norfolk and 2 more28 hr
Nov 2, 2:40 PM EDTWind AdvisoryBOXBristol, Franklin, Hampden, Hampshire, Norfolk, Plymouth28 hr
Nov 2, 2:42 PM EDTGale WarningBOX37 hr
Nov 2, 2:42 PM EDTStorm WarningBOX28 hr
Nov 2, 4:21 PM EDTRiver Flood WatchBOXKent, Providence20 hr

Nearby

High Wind Watches in Massachusetts, 2018High Wind Watches in Rhode Island, 2018High Wind Watches in Connecticut, 2018Every high wind watch in 2018

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.