Alert archive / Massachusetts / Winter Storm Watches in 2018
Winter Storm Watch 9, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this winter storm watch at Nov 14, 2018, 3:31 PM EST for 6 counties in Massachusetts; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It took effect at Nov 15, 2018, 4:00 PM EST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Nov 14, 2018, 3:31 PM EST (20:31 UTC)
- In effect from
- Nov 15, 2018, 4:00 PM EST
- Expired
- Nov 15, 2018, 4:05 AM EST
- In force
- Issued by
- NWS Boston/Norton, MA
Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 85 km from the middle of the area, began a volume at 20:36 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
Albany, NY (KALY), launched 12:00Z, 8.5 hours before the alert went out and 151 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 778 m above ground
- 0-6 km bulk shear
- 120 kt
- 0-1 km storm-relative helicity
- -154 m²/s²
- 0-3 km storm-relative helicity
- -43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
357 WWUS41 KBOX 142031 WSWBOX URGENT - WINTER WEATHER MESSAGE National Weather Service Boston/Norton MA 331 PM EST Wed Nov 14 2018 MAZ007-013>016-150445- /O.NEW.KBOX.WW.Y.0022.181116T0000Z-181116T0600Z/ Eastern Essex MA-Western Norfolk MA-Southeast Middlesex MA- Suffolk MA-Eastern Norfolk MA- Including the cities of Gloucester, Foxborough, Norwood, Cambridge, Boston, and Quincy 331 PM EST Wed Nov 14 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THURSDAY TO 1 AM EST FRIDAY... * WHAT...snow expected. Total snow accumulations of 1 to 3 inches expected along with a period of sleet/ice pellets. * WHERE...Eastern Essex MA, Western Norfolk MA, Southeast Middlesex MA, Suffolk MA and Eastern Norfolk MA Counties. This includes the cities and towns of Gloucester, Foxborough, Norwood, Cambridge, Boston, and Quincy. * WHEN...From 7 PM Thursday to 1 AM EST Friday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MAZ017>021-RIZ001>007-150445- /O.NEW.KBOX.WW.Y.0022.181115T2100Z-181116T0600Z/ Northern Bristol MA-Western Plymouth MA-Eastern Plymouth MA- Southern Bristol MA-Southern Plymouth MA-Northwest Providence RI- Southeast Providence RI-Western Kent RI-Eastern Kent RI- Bristol RI-Washington RI-Newport RI- Including the cities of Taunton, Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, Foster, Smithfield, Providence, Coventry, West Greenwich, East Greenwich, Warwick, West Warwick, Bristol, Narragansett, Westerly, and Newport 331 PM EST Wed Nov 14 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM THURSDAY TO 1 AM EST FRIDAY... * WHAT...snow expected. Total snow accumulations of 1 to 3 inches expected along with a period of sleet/ice pellets. Winds gusting as high as 35 mph. * WHERE...Portions of southeastern Massachusetts and northern and southern Rhode Island. This includes the cities and towns of Taunton, Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, Foster, Smithfield, Providence, Coventry, West Greenwich, East Greenwich, Warwick, West Warwick, Bristol, Narragansett, Westerly, and Newport. * WHEN...From 4 PM Thursday to 1 AM EST Friday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CTZ002>004-150445- /O.NEW.KBOX.WS.A.0009.181115T2100Z-181116T1200Z/ Hartford CT-Tolland CT-Windham CT- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, and Willimantic 331 PM EST Wed Nov 14 2018 ...WINTER STORM WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY MORNING... * WHAT...Heavy mixed wintry precipitation possible. Total snow accumulations of 2 to 4 inches and ice accumulations of one tenth to three tenths of an inch possible. * WHERE...Hartford CT, Tolland CT and Windham CT Counties. This includes the city of Hartford. * WHEN...From Thursday afternoon through Friday morning. * ADDITIONAL DETAILS...Power outages and tree damage are possible due to the ice. Travel could be nearly impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. && $$ MAZ002>006-008>012-026-150445- /O.NEW.KBOX.WS.A.0009.181116T0000Z-181116T1200Z/ Western Franklin MA-Eastern Franklin MA-Northern Worcester MA- Central Middlesex MA-Western Essex MA-Western Hampshire MA- Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA- Southern Worcester MA-Northern Middlesex MA- Including the cities of Charlemont, Greenfield, Orange, Barre, Fitchburg, Framingham, Lowell, Lawrence, Chesterfield, Blandford, Amherst, Northampton, Springfield, Milford, Worcester, and Ayer 331 PM EST Wed Nov 14 2018 ...WINTER STORM WATCH IN EFFECT FROM THURSDAY EVENING THROUGH FRIDAY MORNING... * WHAT...Heavy mixed wintry precipitation possible. Total snow accumulations of 2 to 5 inches and ice accumulations of around two tenths of an inch possible. * WHERE...Portions of central, eastern, northeastern and western Massachusetts. This includes the cities and towns of Charlemont, Greenfield, Orange, Barre, Fitchburg, Framingham, Lowell, Lawrence, Chesterfield, Blandford, Amherst, Northampton, Springfield, Milford, Worcester, and Ayer. * WHEN...From Thursday evening through Friday morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. && $$ Nocera
2 follow-up statements
625 WWUS41 KBOX 150313 WSWBOX URGENT - WINTER WEATHER MESSAGE National Weather Service Boston/Norton MA 1013 PM EST Wed Nov 14 2018 MAZ007-013>016-151115- /O.CON.KBOX.WW.Y.0022.181116T0000Z-181116T0600Z/ Eastern Essex MA-Western Norfolk MA-Southeast Middlesex MA- Suffolk MA-Eastern Norfolk MA- Including the cities of Gloucester, Foxborough, Norwood, Cambridge, Boston, and Quincy 1013 PM EST Wed Nov 14 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THURSDAY TO 1 AM EST FRIDAY... * WHAT...Wet snow expected. Total snow accumulations of 1 to 3 inches expected. * WHERE...Suffolk MA, Southeast Middlesex MA, Eastern Norfolk MA, Western Norfolk MA and Eastern Essex MA Counties. * WHEN...From 7 PM Thursday to 1 AM EST Friday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MAZ017>021-RIZ001>007-151115- /O.CON.KBOX.WW.Y.0022.181115T2100Z-181116T0600Z/ Northern Bristol MA-Western Plymouth MA-Eastern Plymouth MA- Southern Bristol MA-Southern Plymouth MA-Northwest Providence RI- Southeast Providence RI-Western Kent RI-Eastern Kent RI- Bristol RI-Washington RI-Newport RI- Including the cities of Taunton, Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, Foster, Smithfield, Providence, Coventry, West Greenwich, East Greenwich, Warwick, West Warwick, Bristol, Narragansett, Westerly, and Newport 1013 PM EST Wed Nov 14 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM THURSDAY TO 1 AM EST FRIDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of up to two inches and ice accumulations of around two tenths of an inch expected. Winds gusting as high as 35 mph. * WHERE...Portions of southeastern Massachusetts and northern and southern Rhode Island. * WHEN...From 4 PM Thursday to 1 AM EST Friday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CTZ002>004-151115- /O.CON.KBOX.WS.A.0009.181115T2100Z-181116T1200Z/ Hartford CT-Tolland CT-Windham CT- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, and Willimantic 1013 PM EST Wed Nov 14 2018 ...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY MORNING... * WHAT...Heavy mixed precipitation possible. Total snow accumulations of 1 to 3 inches and ice accumulations of one tenth to three tenths of an inch possible. * WHERE...Tolland CT, Hartford CT and Windham CT Counties. * WHEN...From Thursday afternoon through Friday morning. * ADDITIONAL DETAILS...Power outages and tree damage are likely due to the ice. Travel could be nearly impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. && $$ MAZ002>006-008>012-026-151115- /O.CON.KBOX.WS.A.0009.181116T0000Z-181116T1200Z/ Western Franklin MA-Eastern Franklin MA-Northern Worcester MA- Central Middlesex MA-Western Essex MA-Western Hampshire MA- Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA- Southern Worcester MA-Northern Middlesex MA- Including the cities of Charlemont, Greenfield, Orange, Barre, Fitchburg, Framingham, Lowell, Lawrence, Chesterfield, Blandford, Amherst, Northampton, Springfield, Milford, Worcester, and Ayer 1013 PM EST Wed Nov 14 2018 ...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY EVENING THROUGH FRIDAY MORNING... * WHAT...Heavy mixed precipitation possible. Total snow accumulations of 2 to 4 inches and ice accumulations of around two tenths of an inch possible. * WHERE...Portions of central, eastern, northeastern and western Massachusetts. * WHEN...From Thursday evening through Friday morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. && $$
268 WWUS41 KBOX 150905 WSWBOX URGENT - WINTER WEATHER MESSAGE National Weather Service Boston/Norton MA 405 AM EST Thu Nov 15 2018 CTZ002>004-151715- /O.UPG.KBOX.WS.A.0009.181115T2100Z-181116T1200Z/ /O.EXB.KBOX.WW.Y.0022.181115T2100Z-181116T1200Z/ Hartford CT-Tolland CT-Windham CT- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, and Willimantic 405 AM EST Thu Nov 15 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM EST FRIDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of 1 to 3 inches and ice accumulations of up to two tenths of an inch expected. * WHERE...Hartford CT, Tolland CT and Windham CT Counties. * WHEN...From 4 PM this afternoon to 7 AM EST Friday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MAZ004>006-026-151715- /O.UPG.KBOX.WS.A.0009.181116T0000Z-181116T1200Z/ /O.EXB.KBOX.WW.Y.0022.181116T0000Z-181116T1200Z/ Northern Worcester MA-Central Middlesex MA-Western Essex MA- Northern Middlesex MA- Including the cities of Barre, Fitchburg, Framingham, Lowell, Lawrence, and Ayer 405 AM EST Thu Nov 15 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 7 AM EST FRIDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of 2 to 4 inches and ice accumulations of around one tenth of an inch expected. * WHERE...Northern Worcester MA, Central Middlesex MA, Western Essex MA and Northern Middlesex MA Counties. * WHEN...From 7 PM this evening to 7 AM EST Friday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MAZ009>012-151715- /O.UPG.KBOX.WS.A.0009.181116T0000Z-181116T1200Z/ /O.EXB.KBOX.WW.Y.0022.181116T0000Z-181116T1200Z/ Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA- Southern Worcester MA- Including the cities of Blandford, Amherst, Northampton, Springfield, Milford, and Worcester 405 AM EST Thu Nov 15 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 7 AM EST FRIDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of 2 to 4 inches and ice accumulations of around two tenths of an inch expected. * WHERE...Western Hampden MA, Eastern Hampshire MA, Eastern Hampden MA and Southern Worcester MA Counties. * WHEN...From 7 PM this evening to 7 AM EST Friday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MAZ002-003-008-151715- /O.UPG.KBOX.WS.A.0009.181116T0000Z-181116T1200Z/ /O.EXB.KBOX.WW.Y.0022.181116T0000Z-181116T1400Z/ Western Franklin MA-Eastern Franklin MA-Western Hampshire MA- Including the cities of Charlemont, Greenfield, Orange, and Chesterfield 405 AM EST Thu Nov 15 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 9 AM EST FRIDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of 3 to 6 inches and ice accumulations of up to one tenth of an inch expected. * WHERE...Western Franklin MA, Eastern Franklin MA and Western Hampshire MA Counties. * WHEN...From 7 PM this evening to 9 AM EST Friday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MAZ007-013>016-151715- /O.EXT.KBOX.WW.Y.0022.181116T0000Z-181116T1200Z/ Eastern Essex MA-Western Norfolk MA-Southeast Middlesex MA- Suffolk MA-Eastern Norfolk MA- Including the cities of Gloucester, Foxborough, Norwood, Cambridge, Boston, and Quincy 405 AM EST Thu Nov 15 2018 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 7 PM THIS EVENING TO 7 AM EST FRIDAY... * WHAT...Snow expected. Total snow accumulations of up to 4 inches expected. Winds gusting as high as 40 mph. * WHERE...Suffolk MA, Southeast Middlesex MA, Eastern Norfolk MA, Western Norfolk MA and Eastern Essex MA Counties. * WHEN...From 7 PM this evening to 7 AM EST Friday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MAZ017>021-RIZ001>007-151715- /O.CON.KBOX.WW.Y.0022.181115T2100Z-181116T0600Z/ Northern Bristol MA-Western Plymouth MA-Eastern Plymouth MA- Southern Bristol MA-Southern Plymouth MA-Northwest Providence RI- Southeast Providence RI-Western Kent RI-Eastern Kent RI- Bristol RI-Washington RI-Newport RI- Including the cities of Taunton, Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, Foster, Smithfield, Providence, Coventry, West Greenwich, East Greenwich, Warwick, West Warwick, Bristol, Narragansett, Westerly, and Newport 405 AM EST Thu Nov 15 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 1 AM EST FRIDAY... * WHAT...Snow expected. Total snow accumulations of up to 3 inches expected. Winds gusting as high as 35 mph. * WHERE...Portions of southeastern Massachusetts and northern and southern Rhode Island. * WHEN...From 4 PM this afternoon to 1 AM EST Friday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
What forecasters said that day
The local office's own words before this winter storm 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 winter storm watch went out at Nov 14, 12:57 PM EST, 2 hours 34 minutes earlier.
Area forecast discussion, Nov 14, 12:57 PM EST, 2 hours 34 minutes before
Area Forecast Discussion
National Weather Service Boston/Norton MA
1257 PM EST Wed Nov 14 2018
.SYNOPSIS...
Winter-like temperatures today along with blustery northwest
winds today providing cold wind chills. High pressure builds in
from the Midwest, maintaining the cold air as it moves over New
England tonight and early Thursday. The high moves into the
Maritimes during Thursday, leaving cold air over our region. A
coastal storm develops over the southern states and moves up the
east coast Thursday. This will spread a wintry mix of snow,
sleet and rain late Thursday into Friday. A weak system may
bring scattered snow showers Sunday night into Monday.
&&
.NEAR TERM /UNTIL 5 PM THIS AFTERNOON/...
1 PM update...
No major changes from previous forecast. Ineffective sunshine
this afternoon as blustery NW winds up to 45 mph at times
combines with below normal temps in the 30s yielding wind
chills in the teens and 20s! Winds diminish with sunset.
Previous discussion below.
==============================================================
Winter-like cold across the region at mid morning with
temperatures only in the upper 20s to lower 30s, mid 30s along
the immediate coast. However blustery NW winds 20-30 mph with
gusts to near 45 mph at times is yielding wind chills in the
teens and 20s. Also not expecting much of temp recovery this
afternoon given CAA continuing with 850 mb temps lowering from
-12C this morning to -14C to 16C later today.
Will continue marginal wind advisory for northern MA as gusts
should continue to flirt with G40kt/46 mph given good mixing
with blyr depth up to 850 mb or so.
Earlier snow squall streamers from Lake Ontario have been
weakening with time as day time heating disturbs band
circulation. Thus other than a brief flurry expecting a dry day.
&&
.SHORT TERM /5 PM THIS AFTERNOON THROUGH 6 PM THURSDAY/...
Tonight...
High pressure moves overhead. Expect mainly clear skies and
diminishing wind under the high, leading to good radiational
cooling. Dew points upstream are roughly 5-15, and radiational
cooling tends to undercut forecast guidance. We took the
standard guidance and subtracted about 5F to determine min
temps.
Thursday...
High pressure starts the day over the region and then lifts
over the Maritimes. The high shows a distinct cold air damming
pattern extending southwest, and this lingers over our area
through the evening. Expect cold low level air to hold with us
through the day, with high temps in the upper 20s and 30s.
Closed upper low swings up the Ohio Valley, eventually turning
the upper flow southerly along the east coast states. This will
transport increasing moisture into our area, with a supporting
125 kt jet generating increasing lift along the coast and into
Southern New England by late in the day.
Most of the day should be dry as the moisture runs into the
departing high pressure. Toward evening, guidance brings the
lift far enough north to suggest developing precip over our
area. With the deep cold air in place, we expect an initial
period of snow or snow and sleet starting around sunset in most
places, but probably rain along the south coast and islands.
This mixed precip will need to be monitored for a potential
headline.
&&
.LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/...
Highlights...
* Low pressure passes close to the region late Thu into Fri,
with a wintry mix possible especially across the interior
* Weak low pressure may bring scattered rain/snow showers late
Sun into Mon
Details...
Thursday night and Friday...
Cutoff H5 low will move NE across the TN valley through Fri,
with surface low redeveloping off the southeast coast, then
pushes NE toward New England Thu night into Fri. With the high
slowly exiting northern New England to the Maritimes, have a
strong cold air damming signature lingering across the interior
Thu night. This, along with an increasing easterly wind flow,
will help bring a strong influx of moisture toward the region.
Will see precip begin as mainly light snow across most of the
region by Thursday evening, except as rain across Cape Cod and
the islands. Big question will be how quickly the cold air will
scour out of the interior. With the cold air trapped across the
interior, and the milder air working in over the top of the cold
dome, could see a prolonged period of mixed snow/sleet/freezing
rain. Noting the SLR values steadily decrease from S-N
overnight as temps ever so slowly rise around or after midnight
Thu night, but the cold air may keep the sleet/freezing rain mix
for a good portion of the night and into Fri morning.
QPF amounts may run from 0.9 inches well inland to around 1.5
inches across RI/SE Mass. As for ice accretion, could see some
significant icing especially across the higher inland terrain
and portions of the CT valley, as mixed precip could linger into
Fri morning. As the low exits Cape Cod by around midday Friday,
then colder air will start to work back S as winds shift to
W-NW. So, could see a change back to snow mainly over the higher
terrain before ending during Fri afternoon.
Will be monitoring the progress of this storm closely for the
potential of winter headlines that may be issued later today.
Strong easterly low level jet passes across S coastal areas Thu
night, with the strongest gusts after midnight through about
mid morning Friday. E-SE winds may gust up to 35-40 kt, highest
across the islands Friday morning. Wind headlines will likely be
needed for a time there.
Friday night through Tuesday...
The low exits to the Gulf of Maine by Fri evening, then high
pressure passes across the mid Atlc states this weekend. With a
nearly zonal mid level steering flow across the northeast, may
see another fast moving cold front pass Sat night or Sun
morning. With the westerly flow, not much moisture with this
feature, mainly a wind shift expected. However, may see some
moisture work E out of the mid MS valley later Sunday into
Monday. Not a strong system involved with this, but enough of a
boundary to bring scattered rain and/or snow showers. Could see
some light snow accumulations mainly across the interior Sun
night into early Mon.
Another surge of rather cold air is forecast to push into the
region around Tue as high pressure works across from southern
Ontario. Readings may run 10 to 15 degrees below normal.
&&
.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Short Term /through Thursday/...High confidence.
18z update...
Tonight...
VFR and dry weather with gusty NW winds diminishing with sunset.
Thursday...
VFR to start but MVFR 21z-00z across CT-RI and south coast of MA
as snow overspreads this region. Snowfall hourly rates may
approach 1 inch per hour toward 00z from BDL-PVD and points
southward.
KBOS Terminal...High confidence in TAF.
KBDL Terminal...High confidence in TAF. Snow arrives Thu 21z-
00z with hourly snowfall rates approaching 1 inch per hour
possible toward 00z and thereafter until 03z before changing to
sleet and freezing rain.
Outlook /Thursday Night through Sunday/...
Thursday Night: Mainly MVFR, with local IFR possible. Windy
with gusts to 35 kt. RA, PL, FZRA, SN.
Friday: Mainly MVFR, with local IFR possible. Windy with gusts
to 35 kt. RA, FZRA.
Friday Night through Saturday Night: VFR. Breezy.
Sunday: Mainly VFR, with areas MVFR possible.
&&
.MARINE...
Gale force gusts will continue across most of the forecast
waters today, diminishing later in the afternoon. Winds will
diminish to light tonight, then slowly increase on the southern
waters Thursday afternoon.
A Small Craft Advisory continues for Narragansett Bay today,
with Gale Warnings elsewhere. Seas at 5 to 9 feet today will
subside tonight and Thursday. Seas off Block Island may build to
5 feet again by Thursday evening.
Outlook /Thursday Night through Sunday/...
Thursday Night: Low risk for gale force winds with gusts up to
40 kt. Rough seas up to 16 ft. Rain.
Friday: Low risk for gale force winds with gusts up to 40 kt.
Rough seas up to 15 ft. Rain.
Friday Night: Moderate risk for Small Craft Advisory winds with
gusts up to 30 kt. Rough seas up to 13 ft.
Saturday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Local rough seas.
Saturday Night: Winds less than 25 kt. Areas of seas
approaching 5 ft.
Sunday: Winds less than 25 kt. Seas locally approaching 5 ft.
&&
.CLIMATE...
Record low temps for Nov 15
BOS 17 in 1933
PVD 18 in 1905
BDL 17 in 1905 and 1933
ORH 14 in 1933
Record low max temps for Nov 15
BOS 30 in 1933
PVD 30 in 1933
BDL 30 in 1933
ORH 30 in 1972 and 1996
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...Wind Advisory until 7 PM EST this evening for MAZ002>008-010-
012-026.
RI...None.
MARINE...Gale Warning until 5 PM EST this afternoon for ANZ230-232>234-
256.
Gale Warning until 7 PM EST this evening for ANZ231-250-251-
254-255.
Small Craft Advisory until 5 PM EST this afternoon for ANZ236.
Gale Warning until 3 PM EST this afternoon for ANZ235-237.
&&
SYNOPSIS...WTB/EVT
NEAR TERM...Nocera
SHORT TERM...WTB
LONG TERM...EVT
AVIATION...Nocera/EVT
MARINE...WTB/EVT
CLIMATE...Hazardous weather outlook, Nov 14, 7:25 AM EST, 8 hours 6 minutes before
Hazardous Weather Outlook National Weather Service Boston/Norton MA 725 AM EST Wed Nov 14 2018 MAZ002>008-010-012-026-151230- Western Franklin MA-Eastern Franklin MA-Northern Worcester MA- Central Middlesex MA-Western Essex MA-Eastern Essex MA- Western Hampshire MA-Eastern Hampshire MA-Southern Worcester MA- Northern Middlesex MA- 725 AM EST Wed Nov 14 2018 ...WIND ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... This Hazardous Weather Outlook is for central Massachusetts, eastern Massachusetts, northeastern 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. Wind Advisory. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Low pressure will impact the region late Thursday into Friday with rain, snow, sleet and ice. There is the potential for snow and ice accumulations. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CTZ002>004-MAZ009-011-013>024-RIZ001>008-151230- Hartford CT-Tolland CT-Windham CT-Western Hampden MA- Eastern Hampden 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-Barnstable MA-Dukes MA-Nantucket MA- Northwest Providence RI-Southeast Providence RI-Western Kent RI- Eastern Kent RI-Bristol RI-Washington RI-Newport RI-Block Island RI- 725 AM EST Wed Nov 14 2018 This Hazardous Weather Outlook is for northern Connecticut, eastern Massachusetts, southeastern Massachusetts, western Massachusetts, and Rhode Island. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Low pressure will impact the region late Thursday into Friday with a mixture of rain, snow, sleet and ice. There is the potential for snow and ice accumulations away from the immediate coast. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. ANZ230-232>234-256-151230- Boston Harbor-Nantucket Sound-Vineyard Sound-Buzzards Bay- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 725 AM EST Wed Nov 14 2018 ...GALE WARNING IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... This Hazardous Weather Outlook is for Massachusetts coastal waters and Rhode Island coastal waters. .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. Gale Warning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. ANZ231-250-251-254-255-151230- Cape Cod Bay- 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- 725 AM EST Wed Nov 14 2018 ...GALE WARNING IN EFFECT UNTIL 7 PM EST THIS EVENING... This Hazardous Weather Outlook is for Massachusetts coastal waters. .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. Gale Warning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. ANZ235-237-151230- Rhode Island Sound-Block Island Sound- 725 AM EST Wed Nov 14 2018 ...GALE WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... This Hazardous Weather Outlook is for Rhode Island coastal waters. .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. Gale Warning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. ANZ236-151230- Narragansett Bay- 725 AM EST Wed Nov 14 2018 This Hazardous Weather Outlook is for Rhode Island coastal waters. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. 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 |
|---|---|---|---|---|
| Nov 13, 7:37 PM EST | River Flood Warning | BOX | Middlesex, Norfolk | 8 days |
| Nov 14, 3:55 AM EST | Wind Advisory | BOX | Essex, Franklin, Hampshire, Middlesex, Worcester | 12 hr |
| Nov 14, 3:31 PM EST | Winter Weather Advisory | BOX | Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex and 4 more | 34 hr |
| Nov 14, 3:41 PM EST | Gale Warning | BOX | 60 hr | |
| Nov 14, 3:49 PM EST | Wind Advisory | BOX | Barnstable, Dukes, Nantucket | 22 hr |
| Nov 13, 9:46 PM EST | River Flood Warning | BOX | Southeastern Connecticut Planning Region | 5 days |
Nearby
Winter Storm Watches in Massachusetts, 2018Winter Storm Watches in Connecticut, 2018Every winter storm 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.