A mid level disturbance and an approaching cold front resulted in showers and thunderstorms developing over much of southern New England. Like the storms the previous day, frequent lightning accompanied these storms.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BOX wrote it up.
A mid level disturbance and an approaching cold front resulted in showers and thunderstorms developing over much of southern New England. Like the storms the previous day, frequent lightning accompanied these storms. In addition, wind damage and flooding occurred.
The local office's own words before the first event, 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 the first event at Aug 12, 3:48 PM EST, 17 minutes earlier.
Area Forecast Discussion
National Weather Service Taunton MA
448 PM EDT FRI AUG 12 2016
.SYNOPSIS...
High heat and humidity will persist across the area through
Sunday, though some areas may be a few degrees cooler at times.
Scattered thunderstorms are expected through Sunday. A break in the
heat and showers will occur Monday into Tuesday before another
system approaches the region by Wednesday into Thursday.
&&
.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
***Excessive Heat Warning is now in effect for northern
Connecticut and northeastern Massachusetts, including the Boston
and Hartford metro areas***
445 PM Update...Showers and thunderstorms continue, mainly across
Massachusetts at this time. SPC Mesoanalysis shows 2500-3000 J/kg
of SBCAPE across a good portion of southern New England, providing
plenty of juice to keep storms going. Two main concerns with these
storms. The first and primary threat is heavy rain and flooding
and/or flash flooding. With PWATs well over 2 inches and forecast to
come up to near 2.5 inches, heavy rain is pretty much a given, as is
urban and poor drainage flooding. Two things will contribute to the
potential for flash flooding. One is training of cells over the same
area, the other is how quickly (or not) the storms move. Model
forecast Corfidi vectors show storms to move about 20 kts but
current upward propagation vectors are about 5 kts. Currently storms
are moving about 20 mph which will limit flash flood potential if
the storms don't continue to move over the same areas.
The secondary threat with these storms is wind. While the
environment is not particularly favorable for strong to damaging
winds, there is a modest amount of shear and winds have already
been gusty at the surface. That said, there is potential for a
some isolated wind damage, but not expecting anything widespread.
Tonight...Showers and thunderstorms should gradually diminish as we
move into the evening. Patchy fog will develop, especially in the
interior valleys and anywhere that received rain today. More
widespread fog and low clouds will move in along the south coast.
With the high dewpoints continuing overnight, low temperatures will
be quite warm, nearing or exceeding records (see Climate section
below). Exception to this could be across NE MA where temperatures
may drop a little lower as a back door front drops south into NE MA.
There is a lot of uncertainty with the speed and progression of the
front. See Short Term section below for more information.
&&
.SHORT TERM /6 AM SATURDAY MORNING THROUGH 6 PM SATURDAY/...
Saturday...Yet another interesting day is expected with the added
intrigue of a back door cold front moving into a portion of the
region. Models don't seem to have a good handle on this at all with
different perspectives on the speed and timing of the front. The
GFS is the most progressive with this front, bringing it into
southern New England during the overnight period prior to Saturday
and taking it all the way through the area to the I-91 corridor. The
ECMWF is much slower, not coming into the region until after 12Z
Saturday and only making it into extreme NE MA. The NAM falls in
between these two solutions. Tend to lean towards the ECMWF given
the strength of the heat and humidity, as well as some decent
southwesterly winds. However, can't rule out the GFS solution
verifying either.
This makes for an extremely complicated forecast as this will
determine temperatures as well as a potential focus for showers and
thunderstorms. At this point, went with a blend of the GFS/ECMWF,
which brings cooler temperatures into NE MA to a line roughly from
Groton, MA to Worcester, MA to Taunton, MA. However, if the front
doesn't sag that far south then temperatures will be warmer south of
the front. Dewpoints will be slightly lower behind the front,
dropping into the upper 60s to around 70. That may be enough to
take the edge off the humidity but it will still be quite the warm
and humid day no matter where you are.
The best chance for heat indices over 100 degrees will be the lower
CT river valley and northern CT where we will hoist a heat advisory
once the current heat headlines expire at 7 PM.
Once again, our other concern is the potential for showers and
thunderstorms. We have a better focus Saturday with the front
moving into the region. However, this will also depend on the
timing and progress of the front. If the GFS is correct, then a
good chunk of southern New England will be behind the front in the
more stable air. If the ECMWF is correct, then much of the area
will be in the much more unstable air ahead of the front. Therefore,
still some uncertainty. However, the airmass south of the front
will be quite conducive to showers and thunderstorms. There is
quite a bit of instability in all the models (SBCAPE and MLCAPE
greater than 1500 J/kg) as well as decent shear (0-6km bulk shear
between 30 and 40 kts). Given that, expect we have a better shot of
severe thunderstorms Saturday than we did today.
Again, with PWATs well above two inches (a good two to three STD
above normal), heavy rain, flooding, and flash flooding will be a
threat. Especially in areas that received rain today and with any
storms that train. While storms are expected to keep moving with
slightly stronger winds aloft, there is still potential for a storm
to get "stuck" on the front. These storms would also potentially
cause some flooding. Despite this potential for flash flooding,
feel the uncertainty with the progress of the front makes it nearly
impossible to determine which areas have the best chance of this
occurring and it won't be widespread enough to warrant issuing a
flash flood watch for the entire area. The mid shift can re-
evaluate.
Secondary threats for storms tomorrow include the potential for
gusty, damaging winds as well as possibly a brief tornado. The
higher shear numbers will allow storms to sustain themselves a bit
better than today. In addition, with the front over the area, an
increase in low level shear, the high PWATs and low LCL's, we have a
good environment in place for brief, relatively weak tornadoes. The
highest risk for this is along any boundaries that develop as well
as along the front. This threat is low, but something to keep an
eye on and be aware of.
&&
.LONG TERM /SATURDAY NIGHT THROUGH FRIDAY/...
HIGHLIGHTS...
* Periods of showers and thunderstorms will continue with heavy
rainfall and a localized urban flood threat Saturday night into
Monday
* Temperatures should drop below 90 on Monday through most of next
week
* Another weather system approaches by the middle of next week
OVERVIEW...
12Z model suite in better agreement with the slow approach and
eventual passage of the cold front across the region. Looks like the
front will push slowly into N Mass by midday Sunday, then slowly
crossing the region through Sunday evening. Anomalous tropical
moisture continues to pump in around the periphery of the Bermuda
high off the eastern seaboard, with PWATs remaining 3 to 4 STD above
seasonal normals for the region. Will see continued threat for heavy
rainfall and localized flooding, with the best shot during the
afternoon and early nighttime hours. Some question as to whether
there will be another mid level short wave/possible MCS moving along
the front overnight Sunday night into Monday morning, as the NAM and
GGEM suggest. Have kept mention of showers/thunderstorms through
midday Monday.
With the stationary ridge across the mid Atlantic and off the coast
through at least mid week, along with the mid level zonal flow aloft
across the northern tier, the front will stall near or south of
south coastal areas. Weak high pressure/dry air will cross the
region Monday night and Tuesday. Model spread returns for next
possible system that looks to approach Tuesday night into late
Wednesday night or Thursday. Many questions in place as to whether
yet another mid level short wave approaches or it remains dry late
next week.
DETAILS...
Saturday night...Moderate confidence.
Backdoor front across eastern areas moves back NE as a warm front
Saturday evening as low pressure works E out of NY state into
northern New England. Will continue to see chance for showers/
thunderstorms across the region, with the best shot over N central
and NW Mass. PWATs remain in the 2.2 to 2.4 inch range, so the
threat for heavy rainfall and localized flooding also continues.
With dewpts in the lower-mid 70s, sultry conditions will continue
across the region. Overnight lows will be in the 70s, except may be
close to 80 in the urban centers. Another very uncomfortable night
for sleeping in non-air conditioned buildings.
Sunday and Sunday night...Moderate confidence.
While model suite continues to signal low pressure and its
associated H5 short wave passing across northern New England Sunday,
timing issues persist with the passage of the associated cold front.
This is mainly due to the positioning of the mid level ridge off the
mid Atlantic and SE U.S. coast and whether it remains further N as
some models suggest, slowing the progress of the front.
Looks like best shot for showers/thunderstorms will occur across N
Mass by late Sunday morning, then will push slowly across the
remainder of the region through the day. Will still see the threat
of heavy rainfall and localized flooding with PWATs remaining in the
2.2 to 2.4 inch range pretty much anywhere across the region Sunday
afternoon into Sunday night. Big question is whether a possible MCS
moves along the front late Sunday night through the pre dawn hours
Monday as the NAM and Canadian GGEM suggest. Did keep chance POPs
going due to wide model solution spread.
Looks like another day of 90+ high temps on Sunday with dewpts in
the lower-mid 70s. Best shot for high heat index values, possibly
around 100 degrees, across east coastal Mass to the south coast.
Monday and Tuesday...Moderate confidence.
As the front slowly sags south of the region, will see temps drop
about 5-10 degrees from the searing heat over the weekend. However,
it will remain muggy though dewpts will drop back to the 60s so
there will be some relief compared to this weekend.
Ridging in the mid levels will build across the region Monday night
and Tuesday. Should be mainly dry, but can not rule out isold
showers Tuesday afternoon and evening as the high moves offshore.
Wednesday through Friday...Low confidence.
Continued mid level zonal flow will remain across the northeast with
the Bermuda high extending from the mid Atlantic coast to the
western Atlantic. May see another system approach Wednesday night or
Thursday that will tap into the continue tropical moisture feed
around the high offshore. This will be dependent upon timing which
remains wide amongst the model suite. Kept a dry forecast going for
now on Friday as another ridge may build across the northeast.
&&
.AVIATION /21Z FRIDAY THROUGH WEDNESDAY/...
Forecaster Confidence Levels.
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Short Term /through Saturday/...
Through 00Z...Moderate confidence. SCT +SHRA/TSRA expected across
much of the area, lowering conditions to MVFR/IFR briefly. Gusty
winds are also expected with any storms that move through.
Otherwise, VFR conditions prevail.
Tonight...Moderate confidence. Mainly VFR conditions away from the
S coast, with patchy fog and localized IFR conditions over some of
the interior valleys. Along the south coast, MVFR/IFR conditions
are expected in low clouds and fog.
Saturday...Moderate confidence. Some uncertainty but may encounter
more widespread MVFR cigs, especially across northeastern MA.
Occasional IFR cigs/vsbys possible in vicinity of afternoon and
evening thunderstorms.
KBOS TAF...High confidence. Generally VFR conditions expected today
into tonight, although occasional MVFR ceilings possible in vicinity
of afternoon/evening showers and thunderstorms. MVFR cigs may
persist during much of Saturday as a consequence of a NE flow as
well as more showers and embedded thunderstorms.
KBDL TAF...High confidence. VFR conditions expected through the
period except patchy fog may develop late tonight. Also, conditions
may lower briefly to MVFR or even IFR in vicinity of any
thunderstorms.
Outlook /Saturday Night through Wednesday/...
Saturday night through Monday...Moderate confidence in exact timing,
but high confidence that there will be CIG and VSBY restrictions
into Sunday night.
Will see rounds of showers and scattered thunderstorms through this
timeframe, with the best shot Saturday night into Sunday night. Low
clouds and fog patches expected at times during the overnight at
early morning hours, with periods of MVFR-IFR conditions.
VSBY and CIG restrictions should decrease by midday Monday.
Monday night-Tuesday...Should see mainly VFR conditions as high
pressure moves across. Can not rule out patchy fog and local MVFR-
IFR conditions late Monday night into Tuesday morning.
Wednesday...Low confidence. May see areas of MVFR conditions with
scattered showers/thunderstorms as warm front approaches. Timing
very certain.
&&
.MARINE...
Forecaster Confidence Levels.
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Short Term /through Saturday/...
High confidence. Small craft advisories continue through tonight
for the southern waters and the outer waters for wind gusts greater
than 25 kts and for the outer waters, seas greater than 5 feet.
Believe most of these will be allowed to expire by Saturday morning
but depending on the progress of a back door cold front, they may
need to be extended. In addition, visibilities will be limited at
times in showers and thunderstorms this evening and again tomorrow
afternoon and evening and in fog during the overnight.
Outlook /Saturday Night through Wednesday/...
Moderate confidence in trends. Low confidence on exact timing.
Mainly S-SW winds expected through Sunday night. Gusts may reach 20
kt at times with seas building to around 5 ft across the southern
waters late Saturday night through Sunday night so small crafts may
be needed there. Visibility restrictions in areas of fog along
with showers and scattered thunderstorms at times.
Light N-NW winds Monday will shift to E-NE Monday night into Tuesday
as high pressure builds across. Winds shift back to S-SW Wednesday
with gusts up to 20-25 kt on the southern waters with seas up to 5-6
ft. Visibility restrictions in overnight/early morning patchy fog
each day. Chance of showers/thunderstorms Wed/Wed night with another
system possible.
&&
.CLIMATE...
Record high minimum temperatures for August 12 as follows:
BOS 77 set in 1988
BDL 74 set in 1905
PVD 76 set in 1944
ORH 74 set in 1896
Record high minimum temperatures for August 13 as follows:
BOS 75 set in 1944
BDL 74 set in 2005
PVD 77 set in 2005
ORH 75 set in 1896
Record high minimum temperatures for August 14 as follows:
BOS 76 set in 2002
BDL 77 set in 1988
PVD 77 set in 1988
ORH 75 set in 1988
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Excessive Heat Warning until 7 PM EDT this evening for
CTZ002>004.
Air Quality Alert until 11 PM EDT this evening for CTZ002-003.
MA...Heat Advisory until 7 PM EDT this evening for MAZ003-004-
010>012-017>019-026.
Excessive Heat Warning until 7 PM EDT this evening for
MAZ005>007-013>016.
RI...Heat Advisory until 7 PM EDT this evening for RIZ001>004.
MARINE...Small Craft Advisory until 2 AM EDT Saturday for ANZ231>234.
Small Craft Advisory until 4 AM EDT Saturday for ANZ235-237.
Small Craft Advisory until 11 PM EDT this evening for ANZ250.
Small Craft Advisory until 8 AM EDT Saturday for ANZ254>256.
&&
SYNOPSIS...RLG/EVT
NEAR TERM...RLG
SHORT TERM...RLG
LONG TERM...EVT
AVIATION...RLG/EVT
MARINE...RLG/EVT
CLIMATE...StaffHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAUNTON MA 226 PM EDT FRI AUG 12 2016 MAZ002-008-009-020>024-RIZ005>008-131830- WESTERN FRANKLIN MA-WESTERN HAMPSHIRE MA-WESTERN HAMPDEN MA- SOUTHERN BRISTOL MA-SOUTHERN PLYMOUTH MA-BARNSTABLE MA-DUKES MA- NANTUCKET MA-BRISTOL RI-WASHINGTON RI-NEWPORT RI-BLOCK ISLAND RI- 226 PM EDT FRI AUG 12 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE EAST SLOPES OF THE BERKSHIRES AND THE SOUTH COAST OF MASSACHUSETTS AND RHODE ISLAND INCLUDING CAPE COD AND THE ISLANDS. .DAY ONE...THIS AFTERNOON AND TONIGHT. THERE IS AN ISOLATED RISK FOR STRONG TO SEVERE THUNDERSTORMS TODAY. MAIN RISK IS FOR HEAVY RAIN WHICH COULD LEAD TO URBAN AND POOR DRAINAGE FLOODING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. SATURDAY INTO SUNDAY...HOT AND VERY HUMID WEATHER WITH HEAT INDEX VALUES UP TO 100 LIKELY DURING EACH AFTERNOON. HEAT HEADLINES WILL LIKELY BE NEEDED. SATURDAY THROUGH SUNDAY NIGHT...ROUNDS OF SHOWERS AND THUNDERSTORMS ARE EXPECTED WITH AT LEAST LOCALLY HEAVY RAINFALL AT TIMES. DESPITE OUR CURRENT DROUGHT...THERE WILL BE THE RISK FOR LOCALIZED FLOODING. IN ADDITION...THERE WILL ALSO BE SOME RISK FOR STRONG TO SEVERE THUNDERSTORMS OVER THIS PERIOD BUT CONFIDENCE ON TIMING IS LOW. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. CTZ004-MAZ005>007-013>016-131830- WINDHAM CT-CENTRAL MIDDLESEX MA-WESTERN ESSEX MA-EASTERN ESSEX MA- WESTERN NORFOLK MA-SOUTHEAST MIDDLESEX MA-SUFFOLK MA- EASTERN NORFOLK MA- 226 PM EDT FRI AUG 12 2016 ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN CONNECTICUT AND NORTHEASTERN MASSACHUSETTS. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. EXCESSIVE HEAT WARNING. THERE IS AN ISOLATED RISK FOR STRONG TO SEVERE THUNDERSTORMS TODAY. MAIN RISK IS HEAVY RAIN WHICH COULD LEAD TO URBAN AND POOR DRAINAGE FLOODING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. SATURDAY INTO SUNDAY...HOT AND VERY HUMID WEATHER WITH HEAT INDEX VALUES UP TO 100 LIKELY DURING EACH AFTERNOON. HEAT HEADLINES WILL LIKELY BE NEEDED. SATURDAY THROUGH SUNDAY NIGHT...ROUNDS OF SHOWERS AND THUNDERSTORMS ARE EXPECTED WITH AT LEAST LOCALLY HEAVY RAINFALL AT TIMES. DESPITE OUR CURRENT DROUGHT...THERE WILL BE THE RISK FOR LOCALIZED FLOODING. IN ADDITION...THERE WILL ALSO BE SOME RISK FOR STRONG TO SEVERE THUNDERSTORMS OVER THIS PERIOD BUT CONFIDENCE ON TIMING IS LOW. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MAZ003-004-010>012-017>019-026-RIZ001>004-131830- EASTERN FRANKLIN MA-NORTHERN WORCESTER MA-EASTERN HAMPSHIRE MA- EASTERN HAMPDEN MA-SOUTHERN WORCESTER MA-NORTHERN BRISTOL MA- WESTERN PLYMOUTH MA-EASTERN PLYMOUTH MA-NORTHERN MIDDLESEX MA- NORTHWEST PROVIDENCE RI-SOUTHEAST PROVIDENCE RI-WESTERN KENT RI- EASTERN KENT RI- 226 PM EDT FRI AUG 12 2016 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MASSACHUSETTS...EASTERN MASSACHUSETTS...SOUTHEASTERN MASSACHUSETTS...WESTERN MASSACHUSETTS AND NORTHERN RHODE ISLAND. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. HEAT ADVISORY. THERE IS AN ISOLATED RISK FOR STRONG TO SEVERE THUNDERSTORMS TODAY. MAIN RISK IS HEAVY RAIN WHICH COULD LEAD TO URBAN AND POOR DRAINAGE FLOODING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. SATURDAY INTO SUNDAY...HOT AND VERY HUMID WEATHER WITH HEAT INDEX VALUES UP TO 100 LIKELY DURING EACH AFTERNOON. HEAT HEADLINES WILL LIKELY BE NEEDED. SATURDAY THROUGH SUNDAY NIGHT...ROUNDS OF SHOWERS AND THUNDERSTORMS ARE EXPECTED WITH AT LEAST LOCALLY HEAVY RAINFALL AT TIMES. DESPITE OUR CURRENT DROUGHT...THERE WILL BE THE RISK FOR LOCALIZED FLOODING. IN ADDITION...THERE WILL ALSO BE SOME RISK FOR STRONG TO SEVERE THUNDERSTORMS OVER THIS PERIOD BUT CONFIDENCE ON TIMING IS LOW. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. CTZ002-003-131830- HARTFORD CT-TOLLAND CT- 226 PM EDT FRI AUG 12 2016 ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING... ...AIR QUALITY ALERT IN EFFECT UNTIL 11 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN CONNECTICUT. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. EXCESSIVE HEAT WARNING. AIR QUALITY ALERT. THERE IS AN ISOLATED RISK FOR STRONG TO SEVERE THUNDERSTORMS TODAY. MAIN RISK IS HEAVY RAIN WHICH COULD LEAD TO URBAN AND POOR DRAINAGE FLOODING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. SATURDAY INTO SUNDAY...HOT AND VERY HUMID WEATHER WITH HEAT INDEX VALUES UP TO 100 LIKELY DURING EACH AFTERNOON. HEAT HEADLINES WILL LIKELY BE NEEDED. SATURDAY THROUGH SUNDAY NIGHT...ROUNDS OF SHOWERS AND THUNDERSTORMS ARE EXPECTED WITH AT LEAST LOCALLY HEAVY RAINFALL AT TIMES. DESPITE OUR CURRENT DROUGHT...THERE WILL BE THE RISK FOR LOCALIZED FLOODING. IN ADDITION...THERE WILL ALSO BE SOME RISK FOR STRONG TO SEVERE THUNDERSTORMS OVER THIS PERIOD BUT CONFIDENCE ON TIMING IS LOW. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. ANZ230>237-250-251-254>256-131830- 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- 226 PM EDT FRI AUG 12 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. RLG 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
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
239 PM EDT FRI AUG 12 2016
MAZ004-011-012-121930-
NORTHERN WORCESTER MA-SOUTHERN WORCESTER MA-EASTERN HAMPDEN MA-
239 PM EDT FRI AUG 12 2016
...STRONG THUNDERSTORM CONTINUES FOR NORTHEASTERN TOLLAND...
SOUTHEASTERN HAMPSHIRE...EAST CENTRAL HAMPDEN AND SOUTHWESTERN
WORCESTER COUNTIES...
AT 239 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
OVER WARREN...OR 16 MILES NORTHEAST OF SPRINGFIELD...MOVING
SOUTHEAST AT 20 MPH.
WINDS IN EXCESS OF 40 MPH WILL ACCOMPANY THIS STORM. THESE STORMS
MAY INTENSITY AND BECOME CAPABLE OF PRODUCING DAMAGE. STAY TUNED FOR
UPDATED STATEMENTS AND POSSIBLE WARNINGS.
LOCATIONS IMPACTED INCLUDE...
SOUTHBRIDGE...OXFORD...CHARLTON...PALMER...SPENCER...DUDLEY...
STURBRIDGE...MONSON...WARREN...NORTH BROOKFIELD...WEST BROOKFIELD...
BRIMFIELD...BROOKFIELD...HOLLAND...EAST BROOKFIELD AND WALES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4223 7232 4223 7226 4224 7225 4225 7221
4227 7221 4217 7188 4203 7197 4203 7220
4212 7230
TIME...MOT...LOC 1839Z 299DEG 17KT 4221 7225
SIPPRELLPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
337 PM EDT FRI AUG 12 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0259 PM TSTM WND DMG MONTGOMERY 42.20N 72.80W
08/12/2016 HAMPDEN MA AMATEUR RADIO
TREE AND WIRES DOWN ON MAIN ROAD...NORTH ROAD...AND
PITCHER STREET. WIRE ON FIRE AT MAIN ROAD AND PITCHER
STREET.
0315 PM TSTM WND DMG WESTFIELD 42.14N 72.76W
08/12/2016 HAMPDEN MA AMATEUR RADIO
LARGE LIMB AND WIRES DOWN ON CYCLE STREET.
&&
FIELDSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
356 PM EDT FRI AUG 12 2016
MAZ005-006-014-122045-
SOUTHEAST MIDDLESEX MA-CENTRAL MIDDLESEX COUNTY MA-WESTERN ESSEX MA-
356 PM EDT FRI AUG 12 2016
...STRONG THUNDERSTORMS SWEEPING ACROSS SOUTHWESTERN ESSEX...
NORTHEASTERN SUFFOLK AND EAST CENTRAL MIDDLESEX COUNTIES...
AT 356 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
CONCORD...OR 7 MILES SOUTH OF CHELMSFORD...MOVING EAST AT 30 MPH.
WINDS IN EXCESS OF 30 MPH WILL ACCOMPANY THIS STORM. THESE STORMS
MAY INTENSITY AND BECOME CAPABLE OF PRODUCING DAMAGE. STAY TUNED FOR
UPDATED STATEMENTS AND POSSIBLE WARNINGS.
LOCATIONS IMPACTED INCLUDE...
CAMBRIDGE...SOMERVILLE...WALTHAM...MALDEN...MEDFORD...ARLINGTON...
EVERETT...BILLERICA...WOBURN...CHELSEA...ANDOVER...LEXINGTON...
TEWKSBURY...NORTH ANDOVER...MELROSE...SAUGUS...WAKEFIELD...READING...
BELMONT AND BURLINGTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4265 7103 4257 7103 4257 7105 4255 7107
4253 7107 4252 7104 4247 7105 4245 7103
4241 7103 4239 7106 4239 7107 4238 7108
4239 7143 4252 7146
TIME...MOT...LOC 1956Z 264DEG 28KT 4249 7137
SIPPRELLSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
414 PM EDT FRI AUG 12 2016
CTZ004-MAZ012-RIZ001-122100-
WINDHAM CT-SOUTHERN WORCESTER MA-NORTHWEST PROVIDENCE RI-
414 PM EDT FRI AUG 12 2016
...STRONG THUNDERSTORMS SWEEPING ACROSS NORTHEASTERN WINDHAM...
NORTHWESTERN BRISTOL...SOUTH CENTRAL WORCESTER AND NORTHERN
PROVIDENCE COUNTIES...
AT 414 PM EDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG
A LINE EXTENDING FROM MILLVILLE TO DUDLEY TO NEAR SOUTHBRIDGE.
MOVEMENT WAS SOUTHEAST AT 20 MPH.
WINDS IN EXCESS OF 30 MPH WILL ACCOMPANY WITH THESE STORMS. THESE
STORMS MAY INTENSITY AND BECOME CAPABLE OF PRODUCING DAMAGE. STAY
TUNED FOR UPDATED STATEMENTS AND POSSIBLE WARNINGS.
LOCATIONS IMPACTED INCLUDE...
WOONSOCKET...CUMBERLAND...NORTH PROVIDENCE...SMITHFIELD...LINCOLN...
CENTRAL FALLS...KILLINGLY...WEBSTER...SOUTHBRIDGE...BURRILLVILLE...
OXFORD...UXBRIDGE...CHARLTON...NORTH SMITHFIELD...DUDLEY...
GLOCESTER...PUTNAM...THOMPSON...BLACKSTONE AND DOUGLAS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4209 7206 4207 7161 4192 7138 4189 7138
4187 7148 4182 7210
TIME...MOT...LOC 2014Z 298DEG 19KT 4202 7157 4203 7192 4201 7207
SIPPRELLPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MA
448 PM EDT FRI AUG 12 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0305 PM TSTM WND DMG SOUTHAMPTON 42.23N 72.73W
08/12/2016 HAMPSHIRE MA BROADCAST MEDIA
TREE DOWN ON WIRES AT 21 OLD COUNTY ROAD
&&
AEDSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
458 PM EDT FRI AUG 12 2016
CTZ004-MAZ017-RIZ001>003-122145-
WINDHAM CT-NORTHERN BRISTOL MA-SOUTHEAST PROVIDENCE RI-
WESTERN KENT RI-NORTHWEST PROVIDENCE RI-
458 PM EDT FRI AUG 12 2016
...STRONG THUNDERSTORMS CONTINUING THROUGH SOUTHEASTERN WINDHAM...
WEST CENTRAL BRISTOL...WEST CENTRAL KENT AND SOUTHERN PROVIDENCE
COUNTIES...
AT 456 PM EDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG
A LINE EXTENDING FROM WOONSOCKET TO GLOCESTER TO NEAR EASTFORD.
MOVEMENT WAS SOUTHEAST AT 25 MPH.
WINDS IN EXCESS OF 40 MPH WILL ACCOMPANY WITH THESE STORMS. THESE
STORMS MAY INTENSITY AND BECOME CAPABLE OF PRODUCING DAMAGE. STAY
TUNED FOR UPDATED STATEMENTS AND POSSIBLE WARNINGS.
LOCATIONS AND SURROUNDING AREAS IMPACTED INCLUDE...
PROVIDENCE...CRANSTON...PAWTUCKET...TAUNTON...CUMBERLAND...
ATTLEBORO...AND SEEKONK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4167 7213 4177 7214 4185 7172 4194 7142
4187 7110 4177 7136 4179 7138 4177 7139
4165 7204
TIME...MOT...LOC 2056Z 286DEG 21KT 4200 7149 4188 7172 4191 7205
SIPPRELLThe Boston radar (KBOX), 54 km away, was scanning. The volume nearest the first event began at 21:04 UTC.
7 thunderstorm wind, 3 lightning, 3 flood. Local standard time, as filed.
Several trees were downed on Route 6 by thunderstorm winds.
Trees and wires on Foster Road were downed by thunderstorm winds.
Trees on Lake Washington Drive and Reynolds Road were downed by thunderstorm winds.
A tree and wires on Clark Street were downed by thunderstorm winds.
A tree was downed onto wires on Hill Road by thunderstorm winds. The wires were blocking the road.
A tree was downed onto Route 101 by thunderstorm winds.
Lightning struck a house on Chopmist Hill Road, setting a fire in the basement.
One foot of water flooded the intersection of Wilbur and Oaklawn Avenues. A car was stuck in flood waters under Wilbur Avenue bike path bridge.
Lightning struck two barns, one on Shippee Schoolhouse Road and the other on Round Hill Road. Both were set on fire.
Seven Mile Road was flooded and impassable.
A tree and wires on Lewis Farm Road were downed by thunderstorm winds.
A car was stuck in 6 inches of street flooding at the intersection of Washington Street and Laurel Avenue.
Lightning struck People's Baptist Church on Elmwood Avenue, starting a fire in the attic. The vinyl siding melted and wood shingles under the siding burned as well.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Rhode Island in 2016Every state in 2016This day in weather historyWarnings in Rhode Island, August 2016
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 656309, 656320, 656321, 656322, 656323, 656324, 656306, 656304, 656307, 656305, 656325, 656326, 656327.