Damaging Winds in Connecticut, July 27, 2023

Area Forecast Discussion
National Weather Service Boston/Norton MA
425 PM EDT Thu Jul 27 2023

.SYNOPSIS...
The risk for severe thunderstorms and localized flash flooding
continues through early evening. Oppressive heat and humidity
continues Friday and Saturday. Dry weather expected on Friday.
Another round of severe storms and flash flooding are possible
on Saturday as a cold front slides through. Behind the front
cooler and more comfortable conditions are expected Sunday into
the middle of next week.

&&

.NEAR TERM /UNTIL 6 AM FRIDAY MORNING/...
Highlights...

* Severe Thunderstorm Watch remains in effect until 8 PM for most
  of southern New England; excluding Cape Cod and the Islands.

* Strong to severe thunderstorms capable of producing damaging
  straight line winds, localized flash flooding, frequent lightning,
  and a brief tornado.

* Storms come to an end late this evening with a quieter overnight.

At this point we are getting into the thick of it as storms coverage
expands across west of I-91. These storms are moving into an area
with slightly better shear, 35 to 40 knots, the better shear does
continue to shift east throughout the afternoon/early evening. The
best storm relative helicity is out ahead of the storms, around 200
m2/s2. But there is still is plenty of energy in the atmosphere
to generate severe storms, the mixed layer CAPE is around
2000J/kg, we are able to trade off the less than ideal lapse
rates for the abundant CAPE and shear. Example; around 4 PM a
storm passing over Westfield produced a gust of 57 knots or 66
MPH! These are storms that need to be taken seriously. While not
everyone will experience a strong or severe thunderstorm, those
that do will should not these warnings lightly. Given the
saturated soil conditions, trees may succumb to wind gusts at
lower than typical gusts. While the threat is lower, there is a
low, 5-9 % probability for a brief tornado across interior MA &
CT.

A Severe Thunderstorm Watch remains in effect until 8 PM.

Storms will continue moving east this afternoon and into the early
evening, likely reaching the I-95 corridor between 6 PM and 8 PM,
not ideal as it coincides with the evening commute. Storms are
capable of producing torrential rainfall, urban and poor drainage
flooding still remains a risk, a Flood Watch remains in effect until
midnight. Motorist will want to travel this evening with caution.
You can read more about the flood threat in the hydrology section.

Once we get past storms this evening, guidance suggests there will
be some clearing and areas that do receive heavy rain could
develop some localized fog. Despite the front moving through
tonight will remain warm and muggy with lows in the lower to
middle 70s.

&&

.SHORT TERM /6 AM FRIDAY MORNING THROUGH 6 PM FRIDAY/...

Friday...

A mid level ridge will build from the the central Great Lakes early
in the day into the eastern Great Lakes/western New England by late
on Fri. A weak high will nudge into southern New England.

Dangerous heat expected to continue across southern New England.
Still looks like the peak of the heat temp wise will be on Fri. Will
see W to WNW flow at 925 hPa with temps of 23-26 degrees C.
Anticipating strong mixing per NAM/GFS Bufkit soundings, so bumped
temps up toward the 90th percentile of guidance. Should see
widespread highs in the low/mid 90s. Though it may stay in the 80s
along the immediate coastline as the seabreeze develops. Did nudge
down our dew points a bit given the W/WNW flow and deep mixing. Did
not go quite as low as ARW/FV3 guidance, but it is not out of the
question especially if you mix down the dew points at the top of the
mixed layer. Due to this have dew points in the mid 60s to lower
70s. The result are heat indices between 90-100, so think the
current Heat Advisory still looking good.

Given the stronger wind fields that were in place on Thu/Thu night
think that south facing beaches still could see a moderate risk for
rips despite wave heights diminishing. A Rip Current Statement
has been issued for all southern facing beaches 8 AM to 8 PM
Friday, beachgoers will want to remain vigilant.

&&

.LONG TERM /FRIDAY NIGHT THROUGH THURSDAY/...
Highlights

* Oppressive heat/humidity continues Sat.

* Strong to severe storms possible Sat. Heavy downpours could result
  in localized flash flooding.

* Cooler and less humid Sun and into next week.

Friday Night through Saturday...

Mid level ridge axis over the eastern Great Lakes/New England Fri
eve builds offshore by early Sat. The next shortwave/trough lifts in
from the Great Lakes region early in the day and eventually through
by the evening. This will slide a cold front through the region and
perhaps another MCs.

Main change to the forecast was to extend the Heat Advisory across
portions of the south coast, Merrimack and CT Valley through late
Sat. Not expecting much relief from the heat Fri night into Sat as
flow turns more to the WSW/SW at 925 hPa. This will surge upper 60
to mid 70 degree dew points into our region. Expecting overnight
lows to hover right around those dew points, so will be quite warm as
we head into Sat. The question on Sat will be how quickly the front
moves in and if a MCs impacts us. At this point have more confidence
in the heat/humidity during the first half of the day. Ahead of the
incoming front the WSW/SW flow will bring 20-25 degree C overhead at
925 hPa. The result will be highs in the mid 80s to low 90s. Should
see more widespread low 90 degree readings where the Heat Advisory
has been expanded, much of the CT River Valley/south coast and into
the Merrimack Valley. Dew points will be in the low/mid 70s, so heat
indices range from the mid 80s to upper 90s.

On top of the heat concern will have another day where there is a
risk of scattered strong to severe thunderstorms. Somewhat uncertain
to the exact location/track of an MCs pushing in from the west.
Quite difficult to pinpoint these things 3 days out. Our environment
looks quite favorable with deep layer shear in the 0-6 km layer of
30-50 kts as the cold front is sliding in. Instability at this point
looks like roughly a few hundred to perhaps 1000 J/kg of MLCAPE. Low
level lapse rates are 6-8 degrees C and mid level lapse rates are
the typical meh around 5-6. Another anomalous 1.5-2+ inch PWAT plume
advects in with warm cloud layer depths of 3-4.5 km. Given the
environment will have the risk for scattered strong/severe storms
and localized flash flooding. The severe risk highlighted quite well
by the latest CSU ML probs for Day 3 with a 15-30 percent chance of
a severe wind risk for our area and low probs for a hail threat.

Did dial back the default NBM precip chances as am just not sure
where the MCs coming in from the west will track. The GFS/ECWMF
guidance puts us more under the risk whereas the NAM/CMC
highlighting a bit further south. If the NAM is correct then we
could actually have parts of the region where we get no precip.
Given the uncertainty capped things at chances of precip. Hopefully
will have better agreement later today/Fri.

Sunday through Wednesday...

Should see relief from the heat as a more seasonable airmass moves
in behind the cold front. Flow looks like it will be cyclonic
through at least early in the week before a ridge builds into the
Great Lakes region by roughly mid week. Given the cyclonic flow
there does appear there will be a few shortwaves/troughs lifting
through. Tough to time these things this far out especially given
they likely are going to be convectively driven.

Does appear that we are drier and less humid, however given the
upper forcing am not sure we will be completely dry through this
period. Did bump up precip chances on Sun to show an isolated risk
for showers as a shortwave lifts in. Could see some isolated
showers/storms on Mon/Tue across the interior as more waves swing
in. Definitely not looking like there are any washouts at this point
in time. Temps range from the mid 70s to the mid 80s for highs each
day.

&&

.AVIATION /20Z THURSDAY THROUGH TUESDAY/...
Forecast Confidence Levels:

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

Today...High confidence in trends, moderate on exact timing of
t-storms moving through.

Gusty southwest winds 25 to 35 knots out ahead of any storms due
to a strong low level jet. VFR, areas of MVFR around southeast
Massachusetts and Cape Cod. TSRA developing across eastern New
York at 18z. Expect these storms to move east this afternoon,
impacting western terminals between 19z/22z, then eastern
terminals between 20z/23z. Storms will be capable of strong wind
gusts, frequent lightning, and hail. Additionally, storms may
temporarily reduce flight ceilings from VFR/MVFR to IFR/LIFR. We
remain uncertain how for southeast the storms will go before
weakening, did leave out TSRA out of PVD, opt for VCTS due to
lower confidence.

Tonight...High confidence.

Weakening showers/tstorms along the immediate southern coast
gives way to VFR conditions for most. Will have to watch for
patchy/localized IFR-LIFR radiation fog upon clearing, though
west winds 5 to 10 knots may preclude development. IFR to LIFR
stratus/fog pushing into the Cape/Island terminals.

Tomorrow...High confidence.

VFR. Dry runways. West winds become southwest around 5-10
knots, with sea breezes along the eastern MA coast.

Tomorrow Night...High confidence.

VFR. Dry runways. Winds southwest less than 10 knots.

KBOS TAF...High confidence in trends and moderate confidence in
timing. VFR and gusty southwest winds 25 to 35 knots. TSRA
possible between 21z/24z. Storms may temporarily reduce
ceilings to IFR/LIFR conditions along with stronger wind gusts
and frequent lightning. Winds easing after 04z/06z with VFR
conditions returning.

KBDL TAF...High confidence in trends and moderate confidence in
timing. Southwest wind gusts up to 25 knots are possible. TSRA
then possible after 1930Z, with a better chance for storms to
reach severe levels. VFR conditions due return overnight, though
some models show low stratus potentially developing between
09z/12z, ran with a TEMPO for now due to lower confidence.

Outlook /Friday Night through Tuesday/...

Friday Night: VFR.

Saturday: Mainly VFR, with areas MVFR possible. Chance SHRA,
isolated TSRA.

Saturday Night: VFR. Chance SHRA, isolated TSRA.

Sunday through Monday Night: VFR.

&&

.MARINE...
Forecaster Confidence Levels:

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

Key Points:

* Gale Force Wind Gusts on Nearshore Waters & Rough Seas Today
* Hazardous Conditions for recreational boaters
* Strong to Severe T-storms Late Afternoon/Early Tonight

Today through Friday...High Confidence.

Gale Warning for the nearshore southern waters. While SW gusts
are on the lower end of Gale criteria, given peak boating season
and the rather anomalous magnitude of the southwest lower-level
jet by late July standards, we felt it appropriate to message
these gusts with a gale warning along the nearshore marine zones
where mixing may be slightly deeper adjacent to the very warm
land. SCAs continue on the remaining waters where mixing may be
shallower and more limited to 25-30 kt gusts.

Seas become quite rough building to between 3 and 7 feet across
most open waters.

In addition...a few strong to severe thunderstorms may impact
the nearshore waters later this afternoon and early tonight.
This is especially true for the waters near and north the
Plymouth/Marshfield areas.

The southwest LLJ will depart the region later Thu evening and
night allowing winds to diminish. Lingering swell will also
diminish...but at a slower rate so small craft headlines for
rough seas will continue into Friday across some of our southern
waters.

Outlook /Friday Night through Tuesday/...

Friday Night: Winds less than 25 kt. Areas of seas approaching
5 ft.

Saturday: Winds less than 25 kt. Areas of seas approaching
5 ft. Chance of rain showers, isolated thunderstorms. Local
visibility 1 to 3 nm.

Saturday Night: Winds less than 25 kt. Areas of seas
approaching 5 ft. Chance of rain showers, isolated
thunderstorms.

Sunday: Winds less than 25 kt. Seas locally approaching 5 ft.
Slight chance of rain showers.

Sunday Night through Tuesday: Winds less than 25 kt.

&&

.HYDROLOGY...

Flood Watch in effect today and into tonight for most of MA
(excluding eastern Plymouth County and the Cape and Islands),
all of northern CT and much of RI (excluding Washington County).

Antecedent conditions remain little changed and that being that
soil moisture and streamflow conditions are high. We are
expecting another round of thunderstorms capable of not just
instances of severe weather, but also locally heavy to
torrential rainfall. While its not entirely clear how storms may
develop and evolve, there is potential for training of storms
moving over the same areas repeatedly. This may lead to
development of urban and poor drainage flooding, sharp rises on
streams, creeks and tributaries over bankfull, along with
possible instances of rapid onset flooding. Steering flow with
today's thunderstorms is a lot stronger than typical, but given
the antecedent conditions, new areas of flooding may develop
this afternoon and early tonight until storms end.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Flood Watch until midnight EDT tonight for CTZ002>004.
     Heat Advisory until 8 PM EDT Saturday for CTZ002>004.
MA...Flood Watch until midnight EDT tonight for MAZ002>018-020-021-
     026.
     Heat Advisory until 8 PM EDT Saturday for MAZ005-010>021.
     Heat Advisory until 8 PM EDT Friday for MAZ003-004-006-007-026.
     High Surf Advisory until 8 PM EDT this evening for MAZ020>024.
     High Risk for Rip Currents from Friday morning through Friday
     evening for MAZ020>024.
RI...Flood Watch until midnight EDT tonight for RIZ001>005-007.
     Heat Advisory until 8 PM EDT Saturday for RIZ001>007.
     High Surf Advisory until 8 PM EDT this evening for RIZ006>008.
     High Risk for Rip Currents from Friday morning through Friday
     evening for RIZ006>008.
     Air Quality Alert from 11 AM to 11 PM EDT Friday for
     RIZ001>008.
MARINE...Small Craft Advisory until 8 AM EDT Friday for ANZ230-250-251.
     Gale Warning until midnight EDT tonight for ANZ231>237.
     Small Craft Advisory until 8 PM EDT Friday for ANZ254>256.

&&

SYNOPSIS...Dooley
NEAR TERM...Loconto/Dooley
SHORT TERM...BL
LONG TERM...BL
AVIATION...BL/Dooley
MARINE...BL/Dooley
HYDROLOGY...STAFF

Hazardous Weather Outlook
National Weather Service Boston/Norton MA
408 PM EDT Thu Jul 27 2023

MAZ003-004-006-007-026-282015-
Eastern Franklin MA-Northern Worcester MA-Western Essex MA-
Eastern Essex MA-Northern Middlesex MA-
408 PM EDT Thu Jul 27 2023

...FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT FRIDAY...
...SEVERE THUNDERSTORM WATCH 553 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central Massachusetts,
eastern Massachusetts, northeastern Massachusetts and western
Massachusetts.

.DAY ONE...Tonight.

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

   Flood Watch.
   Heat Advisory.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Heat Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

CTZ002>004-MAZ005-010>018-282015-
Hartford CT-Tolland CT-Windham CT-Central Middlesex 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-
408 PM EDT Thu Jul 27 2023

...FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT SATURDAY...
...SEVERE THUNDERSTORM WATCH 553 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

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

.DAY ONE...Tonight.

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

   Flood Watch.
   Heat Advisory.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Heat Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ002-008-009-282015-
Western Franklin MA-Western Hampshire MA-Western Hampden MA-
408 PM EDT Thu Jul 27 2023

...FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...SEVERE THUNDERSTORM WATCH 553 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for western Massachusetts.

.DAY ONE...Tonight.

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

   Flood Watch.
   Severe Thunderstorm Watch.

.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.

RIZ006-282015-
Washington RI-
408 PM EDT Thu Jul 27 2023

...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT SATURDAY...
...HIGH SURF ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...SEVERE THUNDERSTORM WATCH 553 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...HIGH RIP CURRENT RISK IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...
...AIR QUALITY ALERT IN EFFECT FROM 11 AM TO 11 PM EDT FRIDAY...

This Hazardous Weather Outlook is for southern Rhode Island.

.DAY ONE...Tonight.

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

   Heat Advisory.
   High Surf Advisory.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Heat Advisory.
   High Rip Current Risk.
   Air Quality Alert.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ022>024-282015-
Barnstable MA-Dukes MA-Nantucket MA-
408 PM EDT Thu Jul 27 2023

...HIGH SURF ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...HIGH RIP CURRENT RISK IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

This Hazardous Weather Outlook is for southeastern Massachusetts.

.DAY ONE...Tonight.

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

   High Surf Advisory.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   High Rip Current Risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

RIZ001>005-282015-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Eastern Kent RI-Bristol RI-
408 PM EDT Thu Jul 27 2023

...FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT SATURDAY...
...SEVERE THUNDERSTORM WATCH 553 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...AIR QUALITY ALERT IN EFFECT FROM 11 AM TO 11 PM EDT FRIDAY...

This Hazardous Weather Outlook is for northern Rhode Island.

.DAY ONE...Tonight.

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

   Flood Watch.
   Heat Advisory.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Heat Advisory.
   Air Quality Alert.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ020-021-282015-
Southern Bristol MA-Southern Plymouth MA-
408 PM EDT Thu Jul 27 2023

...FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT SATURDAY...
...HIGH SURF ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...SEVERE THUNDERSTORM WATCH 553 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...HIGH RIP CURRENT RISK IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

This Hazardous Weather Outlook is for southeastern Massachusetts.

.DAY ONE...Tonight.

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

   Flood Watch.
   Heat Advisory.
   High Surf Advisory.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Heat Advisory.
   High Rip Current Risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

RIZ008-282015-
Block Island RI-
408 PM EDT Thu Jul 27 2023

...HIGH SURF ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...SEVERE THUNDERSTORM WATCH 553 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...HIGH RIP CURRENT RISK IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...
...AIR QUALITY ALERT IN EFFECT FROM 11 AM TO 11 PM EDT FRIDAY...

This Hazardous Weather Outlook is for southern Rhode Island.

.DAY ONE...Tonight.

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

   High Surf Advisory.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   High Rip Current Risk.
   Air Quality Alert.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

RIZ007-282015-
Newport RI-
408 PM EDT Thu Jul 27 2023

...FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT SATURDAY...
...HIGH SURF ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...SEVERE THUNDERSTORM WATCH 553 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...HIGH RIP CURRENT RISK IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...
...AIR QUALITY ALERT IN EFFECT FROM 11 AM TO 11 PM EDT FRIDAY...

This Hazardous Weather Outlook is for southern Rhode Island.

.DAY ONE...Tonight.

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

   Flood Watch.
   Heat Advisory.
   High Surf Advisory.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Heat Advisory.
   High Rip Current Risk.
   Air Quality Alert.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ019-282015-
Eastern Plymouth MA-
408 PM EDT Thu Jul 27 2023

...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT SATURDAY...
...SEVERE THUNDERSTORM WATCH 553 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for southeastern Massachusetts.

.DAY ONE...Tonight.

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

   Heat Advisory.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Heat Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ250-254>256-282015-
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-
408 PM EDT Thu Jul 27 2023

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

.DAY ONE...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.

ANZ230-251-282015-
Boston Harbor-Massachusetts Bay and Ipswich Bay-
408 PM EDT Thu Jul 27 2023

...SEVERE THUNDERSTORM WATCH 553 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for Massachusetts coastal waters.

.DAY ONE...Tonight.

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

   Severe Thunderstorm Watch.

.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.

ANZ234>237-282015-
Buzzards Bay-Rhode Island Sound-Narragansett Bay-Block Island Sound-
408 PM EDT Thu Jul 27 2023

...GALE WARNING IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...SEVERE THUNDERSTORM WATCH 553 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

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

.DAY ONE...Tonight.

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

   Gale Warning.
   Severe Thunderstorm Watch.

.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.

ANZ231>233-282015-
Cape Cod Bay-Nantucket Sound-Vineyard Sound-
408 PM EDT Thu Jul 27 2023

...GALE WARNING IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

This Hazardous Weather Outlook is for Massachusetts coastal waters.

.DAY ONE...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...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

For more information on upcoming hazardous weather, please see the
Area Forecast Discussion on our webpage for the latest forecast
thinking. There is also our Enhanced Hazardous Weather Outlook at
www.weather.gov/box/ehwo

For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston

Preliminary Local Storm Report
National Weather Service Boston/Norton MA
409 PM EDT Thu Jul 27 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0356 PM     Tstm Wnd Gst     Westfield-Barnes AP     42.17N 72.72W
07/27/2023  M66 MPH          Hampden            MA   ASOS

            ASOS station KBAF Westfield-Barnes AP.

&&

Preliminary Local Storm Report...Summary
National Weather Service Boston/Norton MA
415 PM EDT Thu Jul 27 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0356 PM     Tstm Wnd Gst     Westfield-Barnes AP     42.17N 72.72W
07/27/2023  M66 MPH          Hampden            MA   ASOS

            ASOS station KBAF Westfield-Barnes AP.

0412 PM     Tstm Wnd Dmg     3 W Westfield           42.14N 72.81W
07/27/2023                   Hampden            MA   Amateur Radio

            In Westfield, two trees were down on Bates
            Road by Belden Drive.

&&

Preliminary Local Storm Report...Summary...Corrected
National Weather Service Boston/Norton MA
419 PM EDT Thu Jul 27 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0356 PM     Tstm Wnd Gst     Westfield-Barnes AP     42.17N 72.72W
07/27/2023  M66 MPH          Hampden            MA   ASOS

            ASOS station KBAF Westfield-Barnes AP.

0400 PM     Tstm Wnd Dmg     3 W Westfield           42.14N 72.81W
07/27/2023                   Hampden            MA   Amateur Radio

            Corrects previous tstm wnd dmg report from 3
            W Westfield. In Westfield, two trees were
            down on Bates Road by Belden Drive.

&&

Preliminary Local Storm Report...Summary
National Weather Service Boston/Norton MA
433 PM EDT Thu Jul 27 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0356 PM     Tstm Wnd Gst     Westfield-Barnes AP     42.17N 72.72W
07/27/2023  M66 MPH          Hampden            MA   ASOS

            ASOS station KBAF Westfield-Barnes AP.

0400 PM     Tstm Wnd Dmg     Westfield               42.14N 72.81W
07/27/2023                   Hampden            MA   Amateur Radio

            In Westfield, numerous trees were down. Two
            trees down on Bates Road by Belden Drive.
            Single trees reported down on Montgomery
            Road, Pochassic Street, Union Street near
            Washington Street, LLewellyn Drive,
            Russellville Road, Broad Street, Engleston
            Road, and Jefferson Street. Tree down on a
            house on Broad Street. Power lines down on
            Bush Street. Wires down on Washington Street
            and on Russell Road.

0412 PM     Tstm Wnd Dmg     1 WSW Chicopee          42.17N 72.59W
07/27/2023                   Hampden            MA   Amateur Radio

            In Chicopee, a tree was down on Grattan
            Street.

0415 PM     Tstm Wnd Dmg     2 NW Springfield        42.13N 72.57W
07/27/2023                   Hampden            MA   Amateur Radio

            In Springfield, a tree and wires were down
            in the 100 block of Victoria Street. Also, a
            tree was partially down on the roadway on
            Plainfield Street.

&&

Preliminary Local Storm Report...Summary
National Weather Service Boston/Norton MA
451 PM EDT Thu Jul 27 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0356 PM     Tstm Wnd Gst     Westfield-Barnes AP     42.17N 72.72W
07/27/2023  M66 MPH          Hampden            MA   ASOS

            ASOS station KBAF Westfield-Barnes AP.

0400 PM     Tstm Wnd Dmg     3 W Westfield           42.14N 72.81W
07/27/2023                   Hampden            MA   Amateur Radio

            In Westfield, numerous trees were down. Two
            trees down on Bates Road by Belden Drive.
            Single trees reported down on Pochassic
            Street, Union Street near Washington Street,
            LLewellyn Drive, Russellville Road, Broad
            Street, Engleston Road, and Jefferson
            Street. Tree down on a house on Broad
            Street. Power lines down on Bush Street.
            Wires down on Washington Street and on
            Russell Road. A tree and wires were down at
            the Route 20 and 23 intersection. On
            Montgomery Road, the top half of a 40-50
            foot tall, 2-3 foot diameter pine tree was
            snapped off.

0412 PM     Tstm Wnd Dmg     1 WSW Chicopee          42.17N 72.59W
07/27/2023                   Hampden            MA   Amateur Radio

            In Chicopee, a tree was down on Grattan
            Street.

0415 PM     Tstm Wnd Dmg     2 NW Springfield        42.13N 72.57W
07/27/2023                   Hampden            MA   Amateur Radio

            In Springfield, a tree and wires were down
            in the 100 block of Victoria Street. Also, a
            tree was partially down on the roadway on
            Plainfield Street. Trees were down on Allen
            Street. A tree was down on Fairfield Street.
            Wires were down on Newhouse Street.

0444 PM     Tstm Wnd Dmg     4 ESE Belchertown       42.25N 72.34W
07/27/2023                   Hampshire          MA   Amateur Radio

            In Belchertown, a tree was down on wires on
            East Street.

&&

Preliminary Local Storm Report...Summary
National Weather Service Boston/Norton MA
456 PM EDT Thu Jul 27 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0356 PM     Tstm Wnd Gst     Westfield-Barnes AP     42.17N 72.72W
07/27/2023  M66 MPH          Hampden            MA   ASOS

            ASOS station KBAF Westfield-Barnes AP.

0400 PM     Tstm Wnd Dmg     3 W Westfield           42.14N 72.81W
07/27/2023                   Hampden            MA   Amateur Radio

            In Westfield, numerous trees were down. Two
            trees down on Bates Road by Belden Drive.
            Single trees reported down on Pochassic
            Street, Union Street near Washington Street,
            LLewellyn Drive, Russellville Road, Broad
            Street, Engleston Road, and Jefferson
            Street. Tree down on a house on Broad
            Street. Power lines down on Bush Street.
            Wires down on Washington Street and on
            Russell Road. A tree and wires were down at
            the Route 20 and 23 intersection. On
            Montgomery Road, the top half of a 40-50
            foot tall, 2-3 foot diameter pine tree was
            snapped off.

0412 PM     Tstm Wnd Dmg     1 WSW Chicopee          42.17N 72.59W
07/27/2023                   Hampden            MA   Amateur Radio

            In Chicopee, a tree was down on Grattan
            Street.

0415 PM     Tstm Wnd Dmg     Springfield             42.13N 72.57W
07/27/2023                   Hampden            MA   Amateur Radio

            In Springfield, a tree and wires were down
            in the 100 block of Victoria Street. Also, a
            tree was partially down on the roadway on
            Plainfield Street. Trees were down on Allen
            Street. A tree was down on Fairfield Street.
            Multiple trees and wires were down on
            Newhouse Street.

0444 PM     Tstm Wnd Dmg     4 ESE Belchertown       42.25N 72.34W
07/27/2023                   Hampshire          MA   Amateur Radio

            In Belchertown, a tree was down on wires on
            East Street.

&&