Severe Thunderstorm Warning 129, NWS Boston/Norton, MA

663 
WWUS51 KBOX 170722
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
322 AM EDT TUE AUG 17 2010

MAC005-021-023-170745-
/O.CON.KBOX.SV.W.0129.000000T0000Z-100817T0745Z/
NORFOLK MA-BRISTOL MA-PLYMOUTH MA-
322 AM EDT TUE AUG 17 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM EDT
FOR SOUTH CENTRAL NORFOLK COUNTY IN EASTERN MASSACHUSETTS...AND WEST
CENTRAL PLYMOUTH AND NORTHWESTERN BRISTOL COUNTIES IN SOUTHEAST
MASSACHUSETTS...

AT 317 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED NEAR
EASTON...OR 7 MILES SOUTHWEST OF BROCKTON...MOVING EAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WEST
BRIDGEWATER...BRIDGEWATER...EAST BRIDGEWATER...ABINGTON...WHITMAN AND
HALIFAX

LAT...LON 4213 7091 4197 7086 4194 7135 4204 7136
TIME...MOT...LOC 0722Z 260DEG 32KT 4201 7104

$$

WTB

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAUNTON MA
1016 PM EDT MON AUG 16 2010

.SYNOPSIS...
COLD FRONT WILL CROSS SOUTHERN NEW ENGLAND OVERNIGHT AND THEN
DISSIPATE SOUTH OF NEW ENGLAND ON TUESDAY. WEAK HIGH PRESSURE
MOVES IN FOR WEDNESDAY...THEN A COASTAL LOW PRESSURE MAY AFFECT
SOUTHERN NEW ENGLAND THURSDAY WITH MORE SHOWERS AND THUNDERSTORMS.
MAINLY DRY WEATHER IS EXPECTED FOR THE END OF THIS WEEK INTO THE
EARLY PART OF THIS WEEKEND. MORE UNSETTLED WEATHER EXPECTED EARLY
NEXT WEEK.

&&

.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...
A FEW LINGERING SHOWERS LAONG THE MA/NH BORDER BUT OTHERWISE ANY
CONVECTION ENTERING THE CONNECTICUT VALLEY HAS DISSIPATED BY THE
TIME IT CROSSED THE CENTRAL HILLS.

THE REMAINDER OF THE NIGHT LOOKS QUIET. BUT WITH THE MECHANISM OF
THE FRONT STILL MOVING THROUGH AND WITH LINGERING SBCAPE...ALTHOUGH
OVERLAYED WITH CIN...WE WILL MAINTAIN LOW-END CHANCE POPS FOR A
FEW MORE HOURS. THIS MOVES OFFSHORE OVERNIGHT WITH THE REMAINS OF
THE FRONT.

WIND FIELDS ARE RELATIVELY LIGHT BEHIND THE FRONT WITH HIGH
DEWPOINT AIR EXPECTED TO LINGER THROUGH THE NIGHT...ESPECIALLY IN
THE COASTAL PLAIN AND CAPE/ISLANDS. SO EXPECT STRATUS TO FILL
BACK IN ALONG WITH PATCHY FOG OVERNIGHT.

&&

.SHORT TERM /6 AM TUESDAY MORNING THROUGH TUESDAY NIGHT/...
FEW LEFT OVER SHOWERS POSSIBLE S COAST AND ISLANDS...OTHERWISE
EXPECT AREAS OF STRATUS AND FOG TO BURN OFF FAIRLY QUICKLY TUESDAY
MORNING AS DRIER AIR SEEPS IN. LEFT OVER MOISTURE UNDERNEATH
SUBSIDENCE INVERSION MAY TRAP MOISTURE FOR BROKEN CLOUD COVER
AROUND 5 THSD FT.

MAY STILL HAVE SOME PATCHY FOG TUESDAY NIGHT INTERIOR VALLEYS
ALONG S COAST. WENT NEAR TO A LITTLE UNDER MAV GUIDANCE FOR
TUESDAY NIGHT.

&&

.LONG TERM /WEDNESDAY THROUGH MONDAY/...
MODELS ARE IN FAIRLY GOOD AGREEMENT THROUGH THURSDAY...THEN DIVERGE
INTO SEVERAL SOLUTIONS HEADING INTO THIS WEEKEND. TIMING DIFFERENCES
ALSO COMPLICATE THE FORECAST. THE GREATEST DIFFERENCES ARE IN THE
WEEKEND FORECAST WHEN THERE ARE FAIRLY MAJOR DIFFERENCES FROM RUN
TO RUN AS WELL AS AMONGST THE MODELS. DECIDED TO MINIMIZE THESE
DIFFERENCES BY USING A BLEND OF VARIOUS MODELS. USED A BLEND OF
THE 12Z GFS/00Z ECMWF.  THE LATEST NAM WAS NOT AVAILABLE BECAUSE OF
AN EQUIPMENT PROBLEM.

MODELS TRY TO NUDGE A WEAK HIGH PRESSURE EAST WEDNESDAY...BUT NOT
THINKING THERE WILL BE MUCH SUCCESS. SOUTHERN NEW ENGLAND IS BENEATH
A BROAD MID LEVEL TROUGH INTO THIS WEEKEND. THIS MEANS AT LEAST A
SLIGHT CHANCE OF SHOWERS AT JUST ABOUT ANY TIME FOR THE END OF THIS
WEEK INTO THIS WEEKEND. THERE ARE A COUPLE OF PERIOD WITH A GREATER
RISK OF THESE SHOWERS THAN OTHERS.

THE FIRST IS ASSOCIATED WITH A LOW PRESSURE OFF THE MID-ATLANTIC
COAST. THIS LOW PRESSURE IS FORECAST TO APPROACH SOUTHERN NEW
ENGLAND LATE WEDNESDAY INTO THURSDAY. GIVEN THE SLOW-MOVING MID
LEVEL FLOW...COULD SEE SOME RAINFALL LINGER INTO THURSDAY NIGHT.
THE AREAS MOST LIKELY TO SEE RAINFALL FROM THIS SYSTEM WILL BE THE
SOUTH COAST OF MA..RI AND NORTHERN CT. A HIGH PRESSURE ACROSS
EASTERN CANADA TRIES TO NUDGE IN FRIDAY...WHICH COULD TURN OUT TO
BE A DRY DAY.

THE NEXT SYSTEM COULD IMPACT SOUTHERN NEW ENGLAND THIS WEEKEND.
THE 12Z GFS IS MUCH QUICKER BRINGING THIS LOW PRESSURE EAST THAN
THE 00Z ECMWF. USED CONSENSUS TIMING FOR NOW...WITH THE GREATEST
CHANCE OF PRECIP FROM SATURDAY NIGHT INTO SUNDAY.

&&

.AVIATION /02Z TUESDAY THROUGH SATURDAY/...
OVERNIGHT...MODERATE CONFIDENCE.  AREAS OF MVFR CIGS/FOG DEVELOPING
WITH SCT AREAS OF IFR STATUS/FOG DUE TO LINGERING MOISTURE AND
LIGHT WINDS. LOW PROBABILITY OF ADDITIONAL SHOWERS AND
THUNDERSTORMS RE-FORMING OVERNIGHT.

TUESDAY...HIGH CONFIDENCE OF CONDITIONS BECOMING VFR THROUGHOUT
REGION...ALTHOUGH LINGERING MVFR/IFR UNTIL 13 OR 14Z POSSIBLE IN
SHOWERS...STRATUS AND FOG ACROSS CAPE AND ISLANDS.

KBOS TERMINAL...MVFR STRATUS LIKELY FILLING IN AGAIN TONIGHT...BUT
BREAKING UP BY DAYBREAK AS DRIER AIR SEEPS IN. HIGH CONFIDENCE OF
VFR CONDITIONS TUESDAY. GRADIENT WINDS LOOK JUST LIGHT ENOUGH TO
SUGGEST A VERY LOW CHANCE OF AN EARLY AFTERNOON SEA BREEZE.

OUTLOOK...WEDNESDAY THROUGH SATURDAY...

WEDNESDAY...MODERATE CONFIDENCE.  MAINLY VFR.  MVFR/IFR CONDITIONS
POSSIBLE IN SCT SHRA/TSRA GENERALLY TOWARDS THE SOUTH COAST
BEGINNING IN THE AFTERNOON AND CONTINUING INTO THE OVERNIGHT PERIOD.
PATCHY FOG POSSIBLE OVERNIGHT.

THURSDAY...MODERATE CONFIDENCE.  MVFR/IFR CONDITIONS POSSIBLE IN SCT
SHRA/TSRA THROUGH THE PERIOD AND PATCHY FOG OVERNIGHT.

FRIDAY...MODERATE CONFIDENCE.  MAINLY VFR.

SATURDAY...MODERATE CONFIDENCE.  MAINLY VFR.  MVFR/IFR CONDITIONS
DEVELOPING IN THE EVENING THROUGH THE OVERNIGHT IN SHRA/TSRA AND
PATCHY FOG.

&&

.MARINE...
5 FT EASTERLY SWELL JUST OFFSHORE CONTINUES...AND WILL CONTINUE
SCA FOR THE OUTER WATERS. HAD TO EXTEND INTO MASS BAY PER BUOY
OBSERVATIONS. WAVE WATCH AND SWAN MODELS LOWER SWELLS OVERNIGHT.
HAVE CONTINUED SCA TO EARLY MORNING.

TUE EXPECTING SUBSIDING SWELL.

OUTLOOK...WEDNESDAY THROUGH SATURDAY...

WINDS AND SEAS EXPECTED TO REMAIN BELOW SMALL CRAFT ADVISORY
CRITERIA...BUT SHOULD BUILD THURSDAY AS A COASTAL LOW PRESSURE
APPROACHES FROM NEAR DELAWARE.  SHOWERS ARE EXPECTED TO ARRIVE LATE
WEDNESDAY INTO THURSDAY.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...NONE.
MA...NONE.
NH...NONE.
RI...NONE.
MARINE...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS UNTIL 4 AM EDT TUESDAY
     FOR ANZ250-251-254>256.

&&

SYNOPSIS...RLG/THOMPSON
NEAR TERM...WTB
SHORT TERM...THOMPSON
LONG TERM...RLG
AVIATION...WTB/RLG/THOMPSON
MARINE...RLG/THOMPSON

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAUNTON MA
401 PM EDT MON AUG 16 2010

MAZ005>007-013>024-026-NHZ011-012-015-RIZ001>008-172015-
CENTRAL MIDDLESEX MA-WESTERN ESSEX MA-EASTERN ESSEX MA-
WESTERN NORFOLK MA-SOUTHEAST MIDDLESEX MA-SUFFOLK MA-
EASTERN NORFOLK MA-NORTHERN BRISTOL MA-WESTERN PLYMOUTH MA-
EASTERN PLYMOUTH MA-SOUTHERN BRISTOL MA-SOUTHERN PLYMOUTH MA-
BARNSTABLE MA-DUKES MA-NANTUCKET MA-NORTHERN MIDDLESEX MA-
CHESHIRE NH-EASTERN HILLSBOROUGH NH-
WESTERN AND CENTRAL HILLSBOROUGH NH-NORTHWEST PROVIDENCE RI-
SOUTHEAST PROVIDENCE RI-WESTERN KENT RI-EASTERN KENT RI-BRISTOL RI-
WASHINGTON RI-NEWPORT RI-BLOCK ISLAND RI-
401 PM EDT MON AUG 16 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN
MASSACHUSETTS...NORTHEASTERN MASSACHUSETTS...SOUTHEASTERN
MASSACHUSETTS...SOUTHERN NEW HAMPSHIRE...NORTHERN RHODE ISLAND AND
SOUTHERN RHODE ISLAND.

.DAY ONE...THIS AFTERNOON AND 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.

CTZ002>004-MAZ002>004-008>012-172015-
HARTFORD CT-TOLLAND CT-WINDHAM CT-WESTERN FRANKLIN MA-
EASTERN FRANKLIN MA-NORTHERN WORCESTER MA-WESTERN HAMPSHIRE MA-
WESTERN HAMPDEN MA-EASTERN HAMPSHIRE MA-EASTERN HAMPDEN MA-
SOUTHERN WORCESTER MA-
401 PM EDT MON AUG 16 2010

...SEVERE THUNDERSTORM WATCH 619 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN
CONNECTICUT...CENTRAL MASSACHUSETTS AND WESTERN 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.

   SEVERE THUNDERSTORM WATCH.

THUNDERSTORMS MAY PRODUCE DAMAGING WINDS AND LARGE HAIL ACROSS THE
WATCH AREA FROM MID AFTERNOON TO EARLY EVENING. FREQUENT LIGHTNING
AND VERY HEAVY...ALBEIT BRIEF...DOWNPOURS MAY ALSO OCCUR.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

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.

ANZ230>237-250-251-254>256-172015-
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-
401 PM EDT MON AUG 16 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MASSACHUSETTS COASTAL WATERS
AND RHODE ISLAND COASTAL WATERS.

.DAY ONE...THIS AFTERNOON AND 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.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
927 PM EDT MON AUG 16 2010

MAZ003-004-NHZ011-015-170230-
CHESHIRE NH-EASTERN FRANKLIN MA-NORTHERN WORCESTER MA-WESTERN AND
CENTRAL HILLSBOROUGH NH-
927 PM EDT MON AUG 16 2010

AT 925 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH 3 MILES
NORTHEAST OF WARWICK...OR ABOUT 15 MILES SOUTHWEST OF
JAFFREY...MOVING EAST AT 25 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...ROYALSTON...FITZWILLIAM...
  RINDGE...JAFFREY...SHARON...NEW IPSWICH...TEMPLE...GREENVILLE AND
  MASON.

FOR YOUR SAFETY...GET INSIDE WHEN THIS STORM APPROACHES. WINDS MAY BE
STRONG ENOUGH TO BRING DOWN SMALL BRANCHES. MINOR STREET FLOODING AND
PONDING OF WATER IN POOR DRAINAGE AREAS IS ALSO POSSIBLE.

HEAVY RAIN MAY CAUSE MINOR STREET FLOODING AND PONDING OF WATER IN
LOW LYING AREAS SUCH AS UNDERPASSES. DO NOT DRIVE THROUGH FLOODED
ROADS.

&&

LAT...LON 4291 7179 4273 7172 4266 7236 4276 7238

WTB

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
1239 AM EDT TUE AUG 17 2010

CTZ002-003-170545-
HARTFORD CT-TOLLAND CT-
1239 AM EDT TUE AUG 17 2010

AT 1233 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH.  THE
THUNDERSTORM WAS NEAR SOUTHINGTON AND WOLCOTT...MOVING EAST AT 35
MPH.

* SOME LOCATIONS AFFECTED INCLUDE...NEW BRITAIN...BERLIN...
  NEWINGTON...WETHERSFIELD...ROCKY HILL...GLASTONBURY...
  MARLBOROUGH...MANCHESTER...BOLTON...HEBRON...ANDOVER...COLUMBIA AND
  COVENTRY.

FOR YOUR SAFETY...GET INSIDE WHEN THIS STORM APPROACHES. WINDS MAY BE
STRONG ENOUGH TO BRING DOWN SMALL BRANCHES.

HEAVY RAIN MAY CAUSE MINOR STREET FLOODING AND PONDING OF WATER IN
LOW LYING AREAS SUCH AS UNDERPASSES. DO NOT DRIVE THROUGH FLOODED
ROADS.

&&

LAT...LON 4185 7232 4171 7225 4166 7226 4164 7233
      4161 7233 4158 7246 4164 7251 4162 7270
      4160 7272 4158 7279 4155 7282 4157 7284
      4155 7285 4156 7295 4164 7294 4164 7296

WTB

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
149 AM EDT TUE AUG 17 2010

CTZ003-004-MAZ012-RIZ001-002-170645-
NORTHWEST PROVIDENCE RI-SOUTHEAST PROVIDENCE RI-SOUTHERN WORCESTER
MA-TOLLAND CT-WINDHAM CT-
149 AM EDT TUE AUG 17 2010

AT 147 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH.  THE
THUNDERSTORM WAS LOCATED NEAR CHAPLIN...OR ABOUT 5 MILES NORTHEAST
OF WILLIMANTIC...MOVING EAST AT 35 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...CHAPLIN...ASHFORD...HAMPTON...
  EASTFORD...BROOKLYN...POMFRET...DANIELSON...KILLINGLY...PUTNAM...
  THOMPSON...FOSTER...BURRILLVILLE...GLOCESTER...SMITHFIELD...NORTH
  SMITHFIELD AND MILLVILLE.

HEAVY RAIN MAY CAUSE MINOR STREET FLOODING AND PONDING OF WATER IN
LOW LYING AREAS SUCH AS UNDERPASSES. DO NOT DRIVE THROUGH FLOODED
ROADS.

&&

LAT...LON 4208 7155 4186 7146 4170 7218 4184 7225

WTB

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
253 AM EDT TUE AUG 17 2010

MAZ005-012-013-015>019-RIZ001-170730-
CENTRAL MIDDLESEX COUNTY MA-EASTERN NORFOLK MA-EASTERN PLYMOUTH
MA-NORTHERN BRISTOL MA-NORTHWEST PROVIDENCE RI-SOUTHERN WORCESTER
MA-SUFFOLK MA-WESTERN NORFOLK MA-WESTERN PLYMOUTH MA-
253 AM EDT TUE AUG 17 2010

AT 247 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
OF THUNDERSTORMS CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH ALONG A
LINE EXTENDING FROM BELLINGHAM TO LINCOLN...MOVING EAST AT 40 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...MEDWAY...FRANKLIN...NORTH
  ATTLEBOROUGH...PLAINVILLE...WRENTHAM...MILLIS...NORFOLK...
  MEDFIELD...FOXBOROUGH...MANSFIELD...WALPOLE...NORTON...WESTWOOD...
  SHARON...NORWOOD...EASTON...CANTON...STOUGHTON...WEST
  BRIDGEWATER...MILTON...BROCKTON...RANDOLPH...AVON...BRIDGEWATER...
  HOLBROOK...EAST BRIDGEWATER...BRAINTREE...ABINGTON...WHITMAN...
  WEYMOUTH...ROCKLAND...PEMBROKE...HINGHAM...HANSON AND HANOVER.

FOR YOUR SAFETY...GET INSIDE WHEN THIS STORM APPROACHES. WINDS MAY BE
STRONG ENOUGH TO BRING DOWN SMALL BRANCHES. MINOR STREET FLOODING AND
PONDING OF WATER IN POOR DRAINAGE AREAS IS ALSO POSSIBLE.

&&

LAT...LON 4190 7148 4215 7158 4227 7095 4226 7095
      4225 7096 4225 7093 4227 7090 4228 7089
      4228 7088 4201 7076

WTB