Severe Thunderstorm Warning 59, NWS Boston/Norton, MA

733 
WWUS51 KBOX 132234
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
634 PM EDT Mon Jul 13 2020

MAC013-015-027-132315-
/O.CON.KBOX.SV.W.0059.000000T0000Z-200713T2315Z/
Worcester MA-Hampshire MA-Hampden MA-
634 PM EDT Mon Jul 13 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR SOUTHWESTERN WORCESTER...SOUTHEASTERN HAMPSHIRE AND SOUTHEASTERN
HAMPDEN COUNTIES...

At 633 PM EDT, a severe thunderstorm was located over Brimfield, or
14 miles east of Springfield, moving east at 15 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated and trained spotters. At 628 PM, trees and 
         powerlines were downed in Monson.  

IMPACT...Expect wind damage to trees and power lines. Minor hail 
         damage to vehicles is possible.

Locations impacted include...
Ludlow, Southbridge, Belchertown, Wilbraham, Charlton, Palmer,
Spencer, Ware, Sturbridge, Monson, Hampden, Warren, North Brookfield,
West Brookfield, Brimfield, Brookfield, Holland, East Brookfield and
Wales.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4207 7241 4223 7241 4226 7197 4203 7200
TIME...MOT...LOC 2233Z 276DEG 15KT 4213 7225 

HAIL...1.00IN
WIND...60MPH
 
$$

Loconto/Chai

751 
WWUS51 KBOX 132245
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
645 PM EDT Mon Jul 13 2020

MAC013-015-027-132315-
/O.CON.KBOX.SV.W.0059.000000T0000Z-200713T2315Z/
Worcester MA-Hampshire MA-Hampden MA-
645 PM EDT Mon Jul 13 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR SOUTHWESTERN WORCESTER...SOUTHEASTERN HAMPSHIRE AND SOUTHEASTERN
HAMPDEN COUNTIES...

At 643 PM EDT, a severe thunderstorm was located near Brimfield. A 
new severe thunderstorm has developed near Warren. Each of 
these storms were moving east at 15 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated and trained spotters. Multiple trees and 
         powerlines have been reported downed in Monson around 630 
         PM.

IMPACT...Expect wind damage to trees and power lines. Minor hail 
         damage to vehicles is possible.

Locations impacted include...
Ludlow, Southbridge, Belchertown, Wilbraham, Charlton, Palmer,
Spencer, Ware, Sturbridge, Monson, Hampden, Warren, North Brookfield,
West Brookfield, Brimfield, Brookfield, Holland, East Brookfield and
Wales.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4207 7241 4223 7241 4226 7197 4203 7200
TIME...MOT...LOC 2243Z 267DEG 13KT 4222 7225 4210 7226 

HAIL...1.00IN
WIND...60MPH
 
$$

Loconto/Chai

431 
WWUS51 KBOX 132307
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
707 PM EDT Mon Jul 13 2020

MAC013-015-027-132316-
/O.EXP.KBOX.SV.W.0059.000000T0000Z-200713T2315Z/
Worcester MA-Hampshire MA-Hampden MA-
707 PM EDT Mon Jul 13 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WORCESTER...
SOUTHEASTERN HAMPSHIRE AND SOUTHEASTERN HAMPDEN COUNTIES WILL EXPIRE
AT 715 PM EDT...

The storms which prompted the warning remains severe, and a new 
Severe Thunderstorm Warning has been issued for Worcester County 
until 800 PM. 

LAT...LON 4207 7241 4223 7241 4226 7197 4203 7200
TIME...MOT...LOC 2306Z 275DEG 14KT 4221 7214 4209 7215 

$$

Chai

Area Forecast Discussion
National Weather Service Boston/Norton MA
444 PM EDT Mon Jul 13 2020

.SYNOPSIS...
Showers and thunderstorms diminish this evening followed by
another mild and muggy night. Breezy, cooler and less humid
conditions on Tuesday with showers and scattered thunderstorms in
the afternoon. High pressure then brings fair weather for
Wednesday and Thursday. Scattered showers and thunderstorms
return early Friday and Friday night. High pressure then bring
rain-free but very warm weather for Saturday and Sunday. Another
cold front may bring a few thunderstorms Monday.

&&

.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...

430 PM Update...

Thunderstorms coverage diminish into the evening with areas of fog
developing along the coastal areas and interior fog-prone areas,
especially over areas where rain has fallen. Fog coverage will also
hinge on the extent to which boundary layer winds decouple. We also
cannot rule out some isolated showers but it should be a mostly dry
night for most locations. The Berkshires East Slopes will see the
coolest readings with overnight lows in the upper 50s to low 60s
thanks to dew points falling into the upper 50s. As for most of us
away from the interior high terrain, another muggy and mild night is
in store with lows bottoming out in the mid 60s.

&&

.SHORT TERM /6 AM TUESDAY MORNING THROUGH TUESDAY NIGHT/...

Tuesday...

* Much cooler day than of late with scattered thunderstorms in the
  afternoon.

572 Dm closed low slides east over VT/NH, surface low slides
offshore into Gulf of Maine. This reinforces onshore flow from the
northeast over Eastern MA and RI, and northerly flow over the
interior. Lobe of vorticity traversing the area will lead to showers
and scattered thunderstorms areawide. Best thunderstorm coverage
looks to be in Central MA into Northern RI during the afternoon
hours, which is far enough removed from the stabilizing effect of
onshore flow and drier air from the cold air advection out in
Western MA/CT. However, we have an impressive cold pool aloft with -
12 to -14C at 500mb. This is anomalously cold by mid July standards
with only the 10th percentile according to NAEFS Situational
Awareness Table. There may be some strong storms particularly over
Central MA in the afternoon with CAM guidance showing 1000 J/kg of
MLCAPE and good low-level lapse rates of up to 7.5C/km. But with dew
points falling into the upper 50s to low 60s, not expecting severe
weather, in line with SPC having our entire area in the general
thunder category. Also expect plenty of diurnal cumulus with the
anomalously strong cold air advection for mid-July standards in
Southern New England. Overall, expect a considerably cooler day on
Tuesday with highs generally in the mid 70s to mid 80s with mixing
up to 850mb and 850mb temperatures are between +12 to +14C. People
in Western MA/CT would feel particularly refreshing with dew points
falling into the upper 50s by the afternoon hours.

Tuesday night...

Showers diminish into the overnight hours and temperatures will be
much cooler than of late, with much of interior MA falling into the
50s. Enjoy!

&&

.LONG TERM /WEDNESDAY THROUGH MONDAY/...
Big Picture...

Upper low moves offshore Wednesday morning. Upper ridge builds over
New England during Wednesday and then moves offshore on Thursday.
Shortwave in the Nrn Tier zonal flow crosses on Friday. Another
ridge then builds overhead Saturday through next Monday.

Mid-July normals for 500-mb contours are around 580 Dm. Forecast
values are in the mid 580s to low 590s through the period, so above
normal temperatures are expected most of the period. Shallow surface
east-northeast winds may undercut the deep warmth Wed-Thursday,
especially in Eastern MA. But as those winds become south-southwest
later week and and weekend that should trend back to above-normal
temperatures.

Model mass fields are similar through Friday, with only minor
differences over the weekend. Those differences are the usual ones
dealing with shortwaves in a zonal flow. Confidence is moderate-high
through through Monday.

Daily details...

Wednesday...

Upper low and cold pool from Tuesday will be moving off for the
Maritimes Wednesday. But it remains close enough Wednesday morning
that the cold pool instability may generate a few morning showers in
Eastern MA. High pressure builds south from Nrn New England,
bringing a low-level northeast flow through at least the Central
Hills. Dew points in the mid 50s to low 60s will mean a comfortable
day for most.

Models hint at some pcpn in Northwest MA in the afternoon/evening,
but parameters are weak...forecast CAPE less than 100, LI at plus
4...and leave that scenario less than credible. Mixing to 900-925 mb
taps favorable temps for sfc max values in the 70s and low 80s. Low
level east flow will keep the cooler temps in eastern MA.

Quiet weather Wednesday night with light wind and areas of fog.

Thursday...

High pressure remains along the coast and favors another dry day on
Thursday. Overall a south-southeast surface flow with westerly winds
aloft. GFS again hints at afternoon light pcpn in Northwest MA, but
again the instability parameters are weak at best. Mixing to 850 mb
taps 11-13C temps, so max sfc temps in the upper 70s to lower 80s,
possibly a little cooler where the southeast wind is off the water.

Friday...

Upper shortwave moves east from the Great Lakes, driving a surface
cold front east. Southwest upper jet increases during the day, with
the right entrance to the jet moving over Srn New England. Lifted
Index is forecast sub-zero Friday afternoon. PW values climb to
between 1.5 and 2.0 inches. Will forecast scattered showers/tstms,
some with local downpoours. Convection will linger into Friday
night. The cold front is forecast to  move through Friday
night...expect the chance of convection to end after passage.

Saturday through Monday...

Upper ridge and surface high pressure build over Southern New
England Saturday and Sunday. Expect dry weather over the weekend.
Some signs of a shortwave forcing its way through the flow on
Monday. A cold front works down from the north on Monday and may
bring a few showers/thunder. Mixing up to 800 mb will tap 12-13C
temps at that level, similar to 17-18C at 850 mb. Expect max sfc
temps in the upper 80s and low 90s. Huidity levels will be high,
with dew points 65 to 70 during the period...with heat index values
in the low to mid 90s Sunday and Monday.

&&

.AVIATION /21Z MONDAY THROUGH SATURDAY/...
Forecaster Confidence Levels...

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

20z TAF Update:

Rest of Today: Moderate confidence.

We will continue to see scattered TSRA across S New England through
00z. Any storm would be capable of brief ceiling/vsby reductions,
lightning and localized gusty to strong winds.

Tonight: Moderate confidence.

Showers and thunderstorms diminishing in coverage during the
evening. Will see conditions across the interior improve to VFR, but
not out of the question a few spot that had showers/storms see some
patchy fog develop, especially in terminals in fog-prone areas such
as KBAF and KBDL. Cape Cod and the Island terminals, especially
KACK remaining in MVFR to LIFR stratus and fog.

Tuesday: Moderate confidence.

VFR across the interior, but MVFR to LIFR across eastern coastal
locations including BOS. Winds generally out of the north, but
eastern coastal areas will see onshore flow.

Tuesday night: High confidence.

Mostly VFR conditions with northeast to northerly flow at 5 to 10
kt. Drier, cooler air advecting into the region should limit
development of patchy fog and low clouds to the Eastern MA coast.

KBOS Terminal...Moderate confidence in TAF.

KBDL Terminal...Moderate confidence in TAF.

Outlook /Wednesday through Saturday/...

Wednesday: Mainly VFR, with local MVFR possible.

Wednesday Night: Mainly VFR, with local IFR possible.

Thursday: VFR.

Thursday Night: Mainly VFR, with local IFR possible. Breezy.
Chance SHRA.

Friday: Mainly MVFR, with areas VFR possible. Breezy. Chance
SHRA, slight chance TSRA.

Friday Night: Mainly VFR, with areas IFR possible. Slight
chance SHRA, isolated TSRA.

Saturday: VFR.

&&

.MARINE...

Small Craft Advisories remain in effect for all waters through Tue
afternoon due to 5 ft seas over the outer southern waters. A High
Surf Advisory is also in effect until Tuesday evening for the south-
facing beaches due to the rip current risk and breaking 4-6 ft waves
in the surf zone.

Lower clouds and fog may again develop on the southern waters
tonight. Scattered thunderstorms could develop on Tuesday
afternoon. Winds turning from southwest to northwest and then
northerly by Tuesday afternoon. North winds could gust up to 20
kts Tuesday afternoon into evening over the Eastern waters but
stay below small craft criteria.

Outlook /Wednesday through Saturday/...

Wednesday: Winds less than 25 kt. Areas of seas approaching
5 ft. Slight chance of rain showers.

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

Thursday: Winds less than 25 kt.

Thursday Night: Winds less than 25 kt. Slight chance of rain
showers.

Friday through Friday Night: Winds less than 25 kt. Chance of
rain showers, slight chance of thunderstorms.

Saturday: Winds less than 25 kt.

&&

.HYDROLOGY...
430 AM Update...

As for torrential rainfall expecting PWATs of 1.5 to 1.75 which
is close to if not just above the 90th percentile per SPCs
mesoanalysis. Will also have a warm cloud layer depth of roughly
3 to 4 km. So will have a threat of torrential rainfall. Given
the slow moving nature of the frontal boundary there is a threat
of flash flooding. Looks like the highest risk of flash
flooding is across central and eastern MA and as indicated by
WPCs latest Day 1 Excessive Rainfall Outlook.

405 PM Update:

We are looking at a couple of rounds of rain through Monday. The
first would amount to light to moderate showers moving in overnight
tonight into the first part of Monday. The second round comes in
Monday afternoon into early night associated with scattered to
numerous thunderstorms along a slowing cold front.

Though some areas have received some rains of late, our area remains
abnormally dry. This is reflected by high 1-hourly flash flood
guidance which is anywhere from 2 to 2.75" of rain. However, PWAT
values remain elevated at values ranging from 1.75-2 inches and
support locally heavy downpours. High- res guidance blossoms
scattered to numerous thunderstorms along a SW- NE oriented cold
front. Signals of thunderstorms backbuilding on the frontal
zone and training over the same areas as storms move eastward,
could yield torrential rains in a short period of time. HREF
neighborhood probabilities for 1" rains in 3-hours are very high
at 70-80% from Windsor Locks to Fitchburg eastward to the
Boston-Providence/I-95 corridor, with lower probs of 3" rains in
3-hours. If heavier rains fall over a typically vulnerable
area, such as the larger cities where rain can go readily to
runoff, a localized flash flood threat could materialize.

Antecedent conditions and uncertainties in QPF and placement on
the front precludes a Flash Flood Watch at this time. However
it may need to be considered in later updates near or east of
the frontal boundary, especially as storms are expected to
coincide around or with the Monday PM rush hour.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...High Surf Advisory until 8 PM EDT Tuesday for MAZ023-024.
RI...High Surf Advisory until 8 PM EDT Tuesday for RIZ008.
MARINE...Small Craft Advisory until 8 PM EDT Tuesday for ANZ235-237-255-
     256.

&&

SYNOPSIS...WTB/Chai
NEAR TERM...Loconto/Chai
SHORT TERM...Chai
LONG TERM...WTB
AVIATION...WTB/Loconto/Chai
MARINE...WTB/Chai
HYDROLOGY...

Hazardous Weather Outlook
National Weather Service Boston/Norton MA
424 PM EDT Mon Jul 13 2020

CTZ002-MAZ002-003-008>011-022-142030-
Hartford CT-Western Franklin MA-Eastern Franklin MA-
Western Hampshire MA-Western Hampden MA-Eastern Hampshire MA-
Eastern Hampden MA-Barnstable MA-
424 PM EDT Mon Jul 13 2020

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

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ023-024-RIZ008-142030-
Dukes MA-Nantucket MA-Block Island RI-
424 PM EDT Mon Jul 13 2020

...HIGH SURF ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for southeastern Massachusetts
and 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.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ230>237-250-251-254>256-142030-
Boston Harbor-Cape Cod Bay-Nantucket Sound-Vineyard Sound-
Buzzards Bay-Rhode Island Sound-Narragansett Bay-Block Island Sound-
Coastal waters east of Ipswich Bay and the Stellwagen Bank National
Marine Sanctuary-Massachusetts Bay and Ipswich Bay-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
Coastal Waters extending out to 25 nm South of Marthas Vineyard and
Nantucket-
Coastal Waters from Montauk NY to Marthas Vineyard extending out to
20 nm South of Block Island-
424 PM EDT Mon Jul 13 2020

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

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

CTZ003-004-MAZ004>007-012>021-026-RIZ001>007-142030-
Tolland CT-Windham CT-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 Bristol MA-Western Plymouth MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Northern Middlesex MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-Eastern Kent RI-Bristol RI-
Washington RI-Newport RI-
424 PM EDT Mon Jul 13 2020

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

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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/us.nationalweatherservice.boston.gov

You can follow us on Twitter at
@NWSBoston

Special Weather Statement
National Weather Service Boston/Norton MA
452 PM EDT Mon Jul 13 2020

MAZ005-006-014-026-132130-
Northwest Middlesex County MA-Central Middlesex County MA-
Western Essex MA-Southeast Middlesex MA-
452 PM EDT Mon Jul 13 2020

...A CLUSTER OF STRONG THUNDERSTORMS MOVING ALONG I-495 FROM
LITTLETON TO TEWKSBURY...

At 449 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Westford to near Littleton. Movement was
northeast at 15 mph.

Pea size hail and winds in excess of 40 mph will accompany these
storms. Torrential rainfall may cause ponding or minor flooding.

Locations impacted include...
Lowell, Lawrence, Methuen, Billerica, Woburn, Chelmsford, Andover,
Lexington, Dracut, Tewksbury, Reading, Burlington, Wilmington,
Westford, Acton, Stoneham, Concord, North Reading, Bedford and
Tyngsborough.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Get indoors when these storms approach. Winds may be strong enough to
produce minor damage, such as a few downed branches.

These storms may intensify and become capable of producing damage.
Stay tuned for updated statements and possible warnings.

&&

LAT...LON 4274 7119 4249 7109 4244 7145 4264 7153
      4270 7135 4270 7129 4273 7127 4275 7121
      4274 7120
TIME...MOT...LOC 2049Z 240DEG 11KT 4260 7145 4254 7143

Loconto

Special Weather Statement
National Weather Service Boston/Norton MA
523 PM EDT Mon Jul 13 2020

CTZ004-RIZ001-132215-
Windham CT-Northwest Providence RI-
523 PM EDT Mon Jul 13 2020

...STRONG THUNDERSTORMS FOR WINDHAM COUNTY IN CONNECTICUT...

At 521 PM EDT, Doppler radar was tracking a strong thunderstorm
producing torrential rainfall over Pomfret, or 13 miles northeast of
Mansfield, moving east at 15 mph.

Pea size hail and winds in excess of 30 mph will accompany this
storm.

Locations impacted include...
Killingly, Putnam, Thompson, Brooklyn, Woodstock, Ashford, Pomfret,
Chaplin, Hampton and Eastford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Get indoors when this storm approaches. Winds may be strong enough to
produce minor damage, such as a few downed branches.

Do not drive through flooded roads or underpasses. Avoid low lying
areas near small streams.

Frequent lightning was occurring. Lightning can strike far away from
the storm. Go inside a building or vehicle. Wait at least 30 minutes
until after the storm has passed to resume outdoor activities.

&&

LAT...LON 4178 7215 4194 7217 4201 7180 4179 7179
TIME...MOT...LOC 2121Z 255DEG 12KT 4188 7200

Chai

Special Weather Statement
National Weather Service Boston/Norton MA
539 PM EDT Mon Jul 13 2020

MAZ005>007-014-026-132300-
Northwest Middlesex County MA-Eastern Essex MA-
Central Middlesex County MA-Western Essex MA-Southeast Middlesex MA-
539 PM EDT Mon Jul 13 2020

...STRONG THUNDERSTORMS PRODUCING TORRENTIAL RAINFALL OVER EASTERN
MIDDLESEX AND ESSEX COUNTY IN MASSACHUSETTS...

At 537 PM EDT, Doppler radar was tracking strong thunderstorms
producing torrential rainfall over Tewksbury, moving east at 15 mph.
New storms are constantly developing over an outflow boundary,
leading to prolonged periods of heavy rain over the same areas. This
could lead to urban poor drainage flooding.

Pea size hail and winds in excess of 30 mph could also accompany
these storms.

Locations impacted include...
Lowell, Lawrence, Haverhill, Peabody, Methuen, Salem, Billerica,
Beverly, Woburn, Chelmsford, Andover, Dracut, Tewksbury, Gloucester,
North Andover, Danvers, Wakefield, Reading, Burlington and
Wilmington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Get indoors when this storm approaches. Winds may be strong enough to
produce minor damage, such as a few downed branches.

Do not drive through flooded roads or underpasses. Avoid low lying
areas near small streams.

Frequent lightning was occurring. Lightning can strike far away from
the storm. Go inside a building or vehicle. Wait at least 30 minutes
until after the storm has passed to resume outdoor activities.

&&

LAT...LON 4287 7082 4281 7087 4272 7079 4270 7083
      4267 7073 4264 7076 4269 7063 4265 7059
      4258 7066 4259 7066 4260 7065 4253 7084
      4254 7084 4246 7143 4265 7151 4270 7129
      4274 7118 4281 7116 4281 7107 4289 7090
TIME...MOT...LOC 2137Z 251DEG 13KT 4261 7124

Chai

Special Weather Statement
National Weather Service Boston/Norton MA
544 PM EDT Mon Jul 13 2020

MAZ003-004-010-011-132230-
Eastern Hampden MA-Eastern Franklin MA-Northern Worcester MA-
Eastern Hampshire MA-
544 PM EDT Mon Jul 13 2020

...STRONG THUNDERSTORM MOVING INTO EASTERN HAMPSHIRE AND FAR WESTERN
WORCESTER COUNTIES...

At 542 PM EDT, Doppler radar was tracking a strong thunderstorm over
Amherst, moving east at 15 mph.

Pea size hail and winds in excess of 40 mph will accompany this
storm. Brief heavy downpours and cloud to ground lightning can also
be expected.

Locations impacted include...
Holyoke, Amherst, Northampton, Ludlow, South Hadley, Easthampton,
Belchertown, Palmer, Ware, Granby, Barre, Hadley, Warren, West
Brookfield, Sunderland, Hatfield, Hardwick, Leverett, Shutesbury and
Pelham.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Get indoors when this storm approaches. Winds may be strong enough to
produce minor damage, such as a few downed branches.

These storms may intensify and become capable of producing damage.
Stay tuned for updated statements and possible warnings.

&&

LAT...LON 4228 7263 4245 7255 4239 7214 4217 7226
TIME...MOT...LOC 2142Z 288DEG 11KT 4235 7250

Loconto

Special Weather Statement
National Weather Service Boston/Norton MA
546 PM EDT Mon Jul 13 2020

MAZ004-010-011-132230-
Eastern Hampden MA-Northern Worcester MA-Eastern Hampshire MA-
546 PM EDT Mon Jul 13 2020

...STRONG THUNDERSTORM DEVELOPING OVER EASTERN HAMPDEN AND
SOUTHWESTERN WORCESTER COUNTY IN MASSACHUSETTS...

At 545 PM EDT, Doppler radar was tracking a strong thunderstorm over
Ludlow, or near Chicopee, moving east at 15 mph.

Penny size hail and winds in excess of 40 mph will accompany this
storm. Brief heavy downpours and cloud to ground lightning can also
be expected.

Locations impacted include...
Brief heavy downpours and cloud to ground lightning can also be
expected.
Springfield, Chicopee, Ludlow, South Hadley, Belchertown, Wilbraham,
Palmer, Ware, Monson, Granby, Hampden, Warren, West Brookfield,
Brimfield, Brookfield, Holland and Wales.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Get indoors when this storm approaches. Winds may be strong enough to
produce minor damage, such as a few downed branches.

Frequent lightning was occurring. Lightning can strike far away from
the storm. Go inside a building or vehicle. Wait at least 30 minutes
until after the storm has passed to resume outdoor activities.

&&

LAT...LON 4212 7259 4224 7257 4225 7213 4205 7216
TIME...MOT...LOC 2145Z 274DEG 11KT 4217 7249

Chai

Special Weather Statement
National Weather Service Boston/Norton MA
601 PM EDT Mon Jul 13 2020

MAZ017-018-020-RIZ002-005-132245-
Southern Bristol MA-Northern Bristol MA-Western Plymouth MA-
Bristol RI-Southeast Providence RI-
601 PM EDT Mon Jul 13 2020

...STRONG THUNDERSTORM...

At 600 PM EDT, Doppler radar was tracking a strong thunderstorm over
Rehoboth, or near Pawtucket, moving east at 20 mph.

Dime size hail and winds in excess of 40 mph will accompany this
storm, along with occasional cloud to ground lightning and brief
heavy downpours.

Locations impacted include...
Fall River, Pawtucket, Taunton, East Providence, North Attleborough,
Bridgewater, Attleboro, Middleborough, Norton, Somerset, Barrington,
Swansea, Seekonk, Raynham, Rehoboth, Lakeville, Freetown, Dighton and
Berkley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Get indoors when this storm approaches. Winds may be strong enough to
produce minor damage, such as a few downed branches.

These storms may intensify and become capable of producing damage.
Stay tuned for updated statements and possible warnings.

&&

LAT...LON 4175 7113 4177 7111 4179 7112 4177 7112
      4175 7114 4177 7136 4195 7135 4199 7091
      4174 7095
TIME...MOT...LOC 2200Z 271DEG 17KT 4186 7126

Loconto