Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 77, NWS Boston/Norton, MA

August 4, 2015Essex County, Middlesex County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 4, 2015, 2:49 PM EDT for Essex County, Middlesex County, Massachusetts. It was in force for 41 min. 8 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 4, 2015, 2:49 PM EDT (18:49 UTC)
Expired: Aug 4, 2015, 3:30 PM EDT
In force: 41 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

Counties Essex County, MA, Middlesex County, MA

The radar

The Boston radar (KBOX), 72 km from the middle of the area, began a volume at 18:52 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Aug 4, 2:56 PM EDT	HAIL 0.75	Tewksbury, MA
Aug 4, 3:00 PM EDT	HAIL 1	Wilmington, MA
Aug 4, 3:05 PM EDT	TSTM WND DMG	Wakefield, MA	TREES AND WIRES DOWN ON HOUSE ON PARKER ROAD
Aug 4, 3:10 PM EDT	TSTM WND DMG	Lynnfield, MA	TREES DOWN ON MAIN STREET...CONANT STREET AND WANG ROAD
Aug 4, 3:15 PM EDT	TSTM WND DMG	Danvers, MA	TREE DOWN ON CONANT STREET
Aug 4, 3:15 PM EDT	TSTM WND DMG	Peabody, MA	TREE AND LARGE POWER LINE THROUGH HOUSE ON HAMILTON ROAD...WIRES DOWN ON LOWELL STREET...TREE AND WIRES DOWN ON HARRISON AVENUE...TREE DOWN ON ABINGTON ROAD.
Aug 4, 3:15 PM EDT	TSTM WND DMG	Peabody, MA	TREE DOWN ON A CAR ON HAMILTON ROAD
Aug 4, 3:29 PM EDT	TSTM WND DMG	Peabody, MA	HAMILTON ROAD TREE ON HOUSE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 7 storm reports to this severe thunderstorm warning; the first came 11 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 4, 12:18 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 6.8 hours before the alert went out and 122 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1622 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 628 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

515 
WUUS51 KBOX 041849
SVRBOX
MAC009-017-041930-
/O.NEW.KBOX.SV.W.0077.150804T1849Z-150804T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
249 PM EDT TUE AUG 4 2015

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN ESSEX COUNTY IN NORTHEASTERN MASSACHUSETTS...
  NORTHEASTERN MIDDLESEX COUNTY IN NORTHEASTERN MASSACHUSETTS...

* UNTIL 330 PM EDT

* AT 248 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL AND DAMAGING WINDS IN
  EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER BILLERICA...AND WAS
  MOVING EAST AT 40 MPH.

* SOME LOCATIONS IMPACTED INCLUDE...
  LOWELL...LYNN...PEABODY...SALEM...BILLERICA...BEVERLY...WOBURN...
  CHELMSFORD...ANDOVER...LEXINGTON...TEWKSBURY...GLOUCESTER...NORTH
  ANDOVER...MELROSE...SAUGUS...DANVERS...WAKEFIELD...READING...
  BURLINGTON AND WILMINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHILE NOT IMMEDIATELY LIKELY...THESE STORMS MAY PRODUCE A SHORT LIVED
TORNADO. MOVE TO A SAFE PLACE NOW IN A STURDY STRUCTURE...SUCH AS A
BASEMENT OR SMALL INTERIOR ROOM.

&&

LAT...LON 4258 7066 4261 7066 4258 7070 4257 7076
      4253 7078 4256 7078 4254 7090 4254 7087
      4250 7089 4252 7085 4250 7085 4246 7089
      4246 7132 4263 7136 4267 7073 4264 7076
      4268 7062
TIME...MOT...LOC 1848Z 268DEG 36KT 4254 7126 
$$

KJC

1 follow-up statement

071 
WWUS51 KBOX 041907
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
307 PM EDT TUE AUG 4 2015

MAC009-017-041930-
/O.CON.KBOX.SV.W.0077.000000T0000Z-150804T1930Z/
ESSEX MA-MIDDLESEX MA-
307 PM EDT TUE AUG 4 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR SOUTHERN ESSEX AND EAST CENTRAL MIDDLESEX COUNTIES...

AT 306 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING HALF DOLLAR SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60
MPH. THIS STORM WAS LOCATED OVER LYNNFIELD...OR OVER PEABODY...MOVING
EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
LYNN...PEABODY...SALEM...BEVERLY...ANDOVER...GLOUCESTER...NORTH
ANDOVER...SAUGUS...DANVERS...WAKEFIELD...READING...MARBLEHEAD...NORTH
READING...IPSWICH...LYNNFIELD...MIDDLETON...BOXFORD...HAMILTON...
ROCKPORT AND TOPSFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHILE NOT IMMEDIATELY LIKELY...SHORT LIVED TORNADOES ARE POSSIBLE IN
ADDITION TO SIGNIFICANT WIND DAMAGE. MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4258 7066 4261 7066 4258 7070 4257 7076
      4253 7078 4256 7078 4254 7090 4254 7087
      4251 7089 4252 7085 4250 7085 4248 7105
      4264 7114 4267 7073 4264 7076 4268 7062
TIME...MOT...LOC 1906Z 268DEG 36KT 4255 7101 

$$

KJC

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Boston/Norton, MA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 4, 10:34 AM EDT, 4 hours 15 minutes earlier.

Area forecast discussion, Aug 4, 10:34 AM EDT, 4 hours 15 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAUNTON MA
1034 AM EDT TUE AUG 4 2015

.SYNOPSIS...

THUNDERSTORMS EXPECTED TODAY...BUT MAINLY ACROSS THE EASTERN HALF
OF THE AREA. SOME MAY BECOME SEVERE. DRY...WARM AND LESS HUMID
WEATHER ARRIVES THURSDAY. A PERIOD OF UNSETTLED WEATHER IS
POSSIBLE THURSDAY NIGHT INTO SATURDAY...BUT CONFIDENCE IS LOW
REGARDING THE TIMING AND COVERAGE OF ANY POTENTIAL WET WEATHER.

&&

.NEAR TERM /THROUGH WEDNESDAY/...

1030 AM UPDATE...

DO NOT LET YOUR GUARD DOWN. ADDITIONAL THUNDERSTORM DEVELOPMENT IS
EXPECTED LATER TODAY SOME OF WHICH ARE LIKELY TO BE STRONG TO
SEVERE.

GOING INTO THE ENVIRONMENT: HIGHER THETA-E AIR RESIDES OFFSHORE
PUSHED OUT TO SEA BY THIS MORNINGS WEATHER. BUT EXPECTING A
REBOUND INTO AFTERNOON AHEAD OF A FRONTAL BOUNDARY SWEEPING SE.
HEIGHTS DO STILL RISE WITHIN THE LOW- TO MID-LEVELS AND THERE IS
SOME CONCERN THAT ACCOMPANYING SUBSIDENCE COULD SQUASH ACTIVITY
AS THE WATER VAPOR LOOP HAS A DRY-SLOT SWEEPING IN...BUT DESPITE
THIS THERE IS A STRONG PUSH OF MID-LEVEL ENERGY PER THE LATEST
HIGH-RES GUIDANCE ALONG WITH AN ACCOMPANYING JET STREAK THAT
YIELDS A DECENT SW LOW-LEVEL JET PUSHING HIGHER THETA-E AND
INSTABILITY BACK ACROSS SE NEW ENGLAND AND NEIGHBORING CENTRAL-
INTERIOR LOCALES. PWATS OF 1.25 TO 1.50 INCHES NW TO SE TOWARDS
DEEPER MOISTURE AND HIGHER THETA-E.

FOCUS ON AREAS WHEREVER THERE IS A NOSE OF CONVERGENCE OF THE
LOW-LEVEL FLOW / WHEREVER THE ENVIRONMENT CAN DESTABILIZE / AWAY
FROM THE DRY PUNCH PER WATER VAPOR TO THE W. SO ROUGHLY PUT THERE
IS FOCUS OVER THE E-HALF OF NEW ENGLAND TOWARDS THE SE TOWARDS THE
MIDDAY INTO AFTERNOON HOURS.

DECENT LAPSE RATES THROUGHOUT THE COLUMN WITHIN WHICH 0-6 KM BULK
SHEAR EXCEEDS 50 KTS. SOME TURNING WITHIN THE LOW-LEVEL 0-1/0-3 KM
PROFILE PER LATEST HIGH-RES GUIDANCE...OTHERWISE UNI-DIRECTIONAL
SW TO NE SHEAR.

A FINAL WORD...NOTE THE ENVIRONMENT FROM THE 12Z ALBANY SOUNDING
AND THAT OF CHATHAM! MUCAPE VALUES EXCEEDING 2K J/KG SO LONG AS WE
CAN MIX OUT THE BOUNDARY LAYER WHICH IS EXPECTED. NOTE ALSO THE
SHEAR PROFILE THAT WAS OBSERVED AS ROUGHLY UNI-DIRECTIONAL SW-NE.
ALREADY SEEING SPC MESOANALYSIS BECOMING ROBUST WITH MUCAPE VALUES
OF 2K J/KG AND EFFECTIVE SHEAR OF 50 KTS. MID-LEVEL LAPSE RATES OF
6.5C/KM. PLENTY OF SUNSHINE TO WARM US UP INTO THE 80S WITH SOME
LOCALES NEAR 90.

SO WILL GO WITH LIKELY POPS WITH PRIORITIZED THREATS OF THE
FOLLOWING: HEAVY RAIN / FREQUENT LIGHTNING / URBAN AND POOR
DRAINAGE FLOODING ISSUES / STRONG TO DAMAGING WINDS / SMALL HAIL.
THERE IS THE POSSIBILITY OF A TORNADO.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH 6 PM WEDNESDAY/...

OVERNIGHT...
COLD FRONT WILL BE SLOWING TO A NEAR STALL BETWEEN 00Z AND 04Z
THIS EVENING JUST OFFSHORE. THIS WILL ALLOW A CONTINUATION OF
T-STORM RISK MAINLY ACROSS COASTAL REGIONS UNTIL DRIER AIR MOVES
IN FROM THE NW AND CONVECTION SHIFTS S TOWARD BETTER INSTABILITY.
THEREFORE...GRADUAL IMPROVEMENT EXPECTED. SOME FOG POSSIBLE WHERE
RAINFALL OCCURS. OTHERWISE...TEMPS A LITTLE COOLER...MAINLY IN
THE LOWER 60S ACROSS THE AREA...OR EVEN IN THE 50S ACROSS NW MA.

WEDNESDAY...
CYCLONICALLY CURVED FLOW REMAINS IN PLACE ACROSS THE REGION
COMBINED WITH H5 TEMPS ABNORMALLY COLD...AROUND -13C. STALLED
FRONTAL BOUNDARY REMAINS TO THE S...BUT ONE FINAL SHORTWAVE WILL
BE ROTATING THROUGH TO THE N. THIS MAY LEAD TO SOME SCT
SHOWERS/T-STORMS MAINLY N OF THE MASS PIKE. WITH THE VERY COLD H5
TEMPERATURES...THERE IS A RISK FOR HAIL AS WELL. KEY WILL BE HOW
MUCH DRY AIR BUILDS THROUGH THE COLUMN. NOT EXPECTING
SHOWERS/STORMS TO BE AS WIDESPREAD AS TODAY...BUT SOME LOW CHANCE
OR AT LEAST SLIGHT CHANCE POPS ARE NEEDED TO REFLECT THE RISK.
WARMER TEMPS REMAIN IN PLACE...MAINLY THE LOW-MID 80S.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/...

HIGHLIGHTS...

* UNSETTLED WEATHER POSSIBLE FRIDAY
* TEMPERATURES TRENDING BELOW NORMAL DURING THIS PERIOD

OVERALL...THE MODELS CONTINUE TO HAVE RATHER POOR AGREEMENT ON
THE DETAILS THROUGH THIS PORTION OF THE FORECAST. THERE IS SOME
AGREEMENT ON THE OVERALL PATTERN TREND...WITH A CLOSED MID LEVEL
LOW OVER EASTERN CANADA...MOVING INTO THE MARITIMES LATE THIS
WEEK. LOOKING AT A PERIOD OF UNSETTLED WEATHER WITH TEMPERATURES
TRENDING BELOW NORMAL THROUGH MUCH OF THIS TIME PERIOD.

THURSDAY...MUCH OF THE DAY LOOKS TO BE DRY WITH HIGH PRESSURE
BUILDING INTO THE AREA.

THURSDAY NIGHT THROUGH SATURDAY...THIS LOOKS TO BE THE MOST
UNSETTLED TIME WITH A LOW PRESSURE MOVING INTO THE MID ATLANTIC
STATES...THEN POSSIBLY UP THE EAST COAST OVER THE 40/70 BENCHMARK
SOUTHEAST OF SOUTHERN NEW ENGLAND. THE ECMWF REMAINS MORE BULLISH
THAN THE GFS...AND HAS A FASTER TIMING AS WELL. THE GFS ALSO HAS A
MORE SOUTHERN TRACK THAN THE GFS. GIVEN THE UNCERTAINTY IN THE
DETAILS...WILL KEEP AT LEAST A CHANCE OF RAINFALL...WITH THE
GREATEST POPS TOWARD THE SOUTH COAST OF NEW ENGLAND. WITH MOSTLY
CLOUDY TO OVERCAST SKIES FOR MUCH OF THIS TIME...EXPECTING BELOW
NORMAL TEMPERATURES.

SUNDAY AND MONDAY...MUCH OF THIS FORECAST WILL DEPEND ON HOW THE
PATTERN FOR FRIDAY AND SATURDAY DEVELOP. IN GENERAL THOUGH...
EXPECTING DRIER WEATHER WITH REBOUNDING TEMPERATURES.

&&

.AVIATION /14Z TUESDAY THROUGH SATURDAY/...

FORECASTER CONFIDENCE LEVELS...

LOW...LESS THAN 30 PERCENT.
MODERATE...30 TO 60 PERCENT.
HIGH...GREATER THAN 60 PERCENT.

SHORT-TERM /THROUGH WEDNESDAY/...

15Z UPDATE...

TODAY...MODERATE CONFIDENCE.
SHRA/TSRA DEVELOPING TOWARDS MIDDAY GOING W TO E INTO THE EVENING
HRS. STRONG TO SEVERE POTENTIAL. +RA WITH GUSTY WINDS AND POSSIBLE
HAIL. BRIEF MVFR / IFR CONDITIONS WITH TSRA.

TONIGHT INTO WEDNESDAY...HIGH CONFIDENCE.
AFTER STORMS/RAIN SWEEPS OFFSHORE LATE THIS EVENING...EXPECT
IMPROVEMENT TO VFR WHICH WILL LINGER INTO THE DAYLIGHT HOURS ON
WED. AN ISOLATED SHOWER OR THUNDERSTORM IS THEN POSSIBLE MAINLY N
OF THE MASS PIKE ON WED...BUT NOT AS WIDESPREAD AS TUE.

KBOS TERMINAL...HIGH CONFIDENCE IN TAF. LOWER CONFIDENCE IN TIMING
OF ANY AFTERNOON STORMS.

KBDL TERMINAL...HIGH CONFIDENCE IN TAF. LOWER CONFIDENCE IN TIMING
OF ANY AFTERNOON STORMS.

OUTLOOK /WEDNESDAY NIGHT THROUGH SATURDAY/...

WEDNESDAY NIGHT THROUGH THURSDAY...HIGH CONFIDENCE. VFR. LOW
PROBABILITY OF A FEW SHOWERS/STORMS ACROSS NW MA WEDNESDAY. ANY
STORMS THAT DEVELOP MAY HAVE MVFR/IFR CONDITIONS.

THURSDAY NIGHT THROUGH SATURDAY...LOW CONFIDENCE ON TIMING...HIGHER
CONFIDENCE ON TRENDS. MVFR/IFR CONDITIONS IN WIDESPREAD RAIN LIKELY
SOMETIME DURING THIS PERIOD. VFR BEFORE AND AFTER PERIODS OF RAIN.

&&

.MARINE...

FORECASTER CONFIDENCE LEVELS...

LOW...LESS THAN 30 PERCENT.
MODERATE...30 TO 60 PERCENT.
HIGH...GREATER THAN 60 PERCENT.

SHORT-TERM /THROUGH TUESDAY NIGHT/...

TODAY...MODERATE CONFIDENCE.
SW WINDS REMAIN IN PLACE AND WITH SOME GUSTS APPROACHING 25-30 KT
AT TIMES. GUSTS COULD APPROACH 45 KT IN AND NEAR THE STRONGER
THUNDERSTORMS EXPECTED TO REDEVELOP ACROSS THE WATERS. THIS WILL
ALLOW SEAS...WHICH ARE ALREADY RUNNING AROUND 5 FT ON THE S WATERS
TO INCREASE...POSSIBLY INCREASING TO AS HIGH AS 7 FT BY THE EVENING.
SMALL CRAFT ADVISORIES CURRENTLY OUT REFLECT THIS...SO NO CHANGES.

TONIGHT INTO WEDNESDAY...MODERATE CONFIDENCE.
FRONT MOVES FURTHER OFFSHORE...OUTSIDE OF ANY STORMS/SHOWERS...
WINDS AND SEAS WILL GRADUALLY DIMINISH...SO EXPECT THESE SMALL
CRAFT ADVISORIES TO GRADUALLY BE DROPPED THROUGH THE PERIOD.

OUTLOOK /WEDNESDAY NIGHT THROUGH SATURDAY/...MODERATE CONFIDENCE.

WEDNESDAY NIGHT THROUGH FRIDAY...HIGH CONFIDENCE. QUIET BOATING
WEATHER WITH LIGHT WINDS AND SEAS BELOW 5 FEET EXPECTED. RAIN IS
LIKELY AT TIMES THURSDAY NIGHT THROUGH FRIDAY...LIMITING
VISIBILITIES AT TIMES.

FRIDAY NIGHT AND SATURDAY...MODERATE CONFIDENCE. EASTERLY WINDS
AND SEAS INCREASE AS LOW PRESSURE PASSES SOUTH OF THE WATERS.
SMALL CRAFT ADVISORIES WILL LIKELY BE NEEDED FOR THE OUTER WATERS.
RAIN IS LIKELY FRIDAY NIGHT INTO SATURDAY...LIMITING VISIBILITIES
AT TIMES.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...

CT...NONE.
MA...NONE.
RI...NONE.
MARINE...SMALL CRAFT ADVISORY UNTIL 8 PM EDT THIS EVENING FOR
     ANZ230>234-236-250-251.
     SMALL CRAFT ADVISORY UNTIL 8 AM EDT WEDNESDAY FOR ANZ235-237-
     254>256.

&&

SYNOPSIS...BELK/DOODY
NEAR TERM...BELK/DOODY/SIPPRELL
SHORT TERM...DOODY
LONG TERM...BELK
AVIATION...BELK/DOODY
MARINE...BELK/DOODY

Hazardous weather outlook, Aug 4, 12:54 PM EDT, 1 hour 55 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAUNTON MA
1254 PM EDT TUE AUG 4 2015

MAZ002>016-026-051700-
WESTERN FRANKLIN MA-EASTERN FRANKLIN MA-NORTHERN WORCESTER MA-
CENTRAL MIDDLESEX MA-WESTERN ESSEX MA-EASTERN ESSEX MA-
WESTERN HAMPSHIRE MA-WESTERN HAMPDEN MA-EASTERN HAMPSHIRE MA-
EASTERN HAMPDEN MA-SOUTHERN WORCESTER MA-WESTERN NORFOLK MA-
SOUTHEAST MIDDLESEX MA-SUFFOLK MA-EASTERN NORFOLK MA-
NORTHERN MIDDLESEX MA-
1254 PM EDT TUE AUG 4 2015

...SEVERE THUNDERSTORM WATCH 469 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN...CENTRAL...EASTERN...
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.

   SEVERE THUNDERSTORM WATCH

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

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.

CTZ002>004-MAZ017>024-RIZ001>008-051700-
HARTFORD CT-TOLLAND CT-WINDHAM CT-NORTHERN BRISTOL MA-
WESTERN PLYMOUTH MA-EASTERN PLYMOUTH MA-SOUTHERN BRISTOL MA-
SOUTHERN PLYMOUTH MA-BARNSTABLE MA-DUKES MA-NANTUCKET MA-
NORTHWEST PROVIDENCE RI-SOUTHEAST PROVIDENCE RI-WESTERN KENT RI-
EASTERN KENT RI-BRISTOL RI-WASHINGTON RI-NEWPORT RI-BLOCK ISLAND RI-
1254 PM EDT TUE AUG 4 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN CONNECTICUT...
SOUTHEASTERN MASSACHUSETTS...AND RHODE ISLAND.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A MODERATE PROBABILITY FOR SCATTERED STRONG TO SEVERE
THUNDERSTORMS. IN ADDITION TO HEAVY RAIN AND LIGHTNING...THERE IS
POTENTIAL FOR LARGE HAIL AND STRONG TO DAMAGING WINDS. CANNOT
RULE OUT A POSSIBLE TORNADO. URBAN AND POOR-DRAINING FLOODING IS
ALSO A CONCERN. THREATS CONTINUE INTO THE EVENING HOURS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

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>256-051700-
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-
1254 PM EDT TUE AUG 4 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED STRONG THUNDERSTORMS ARE POSSIBLE...BEGINNING THIS MORNING
AND CONTINUING INTO WEDNESDAY MORNING. WITH ANY STRONG STORMS...
EXPECT HEAVY RAIN / REDUCED VISIBILITIES /...FREQUENT LIGHTNING...
AS WELL AS THE POTENTIAL FOR BRIEF GALE FORCE WINDS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

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.

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

In the hours before

Local storm report, Aug 4, 1:48 PM EDT, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MA
148 PM EDT TUE AUG 04 2015

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

0136 PM     HAIL             PETERSHAM               42.49N  72.19W
08/04/2015  M1.75 INCH       WORCESTER          MA   PUBLIC

&&

AED

Local storm report, Aug 4, 1:59 PM EDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
159 PM EDT TUE AUG 04 2015

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

1255 PM     TSTM WND DMG     AMHERST                 42.38N  72.52W
08/04/2015                   HAMPSHIRE          MA   AMATEUR RADIO

            TREE ON TO HOUSE ON FLAT HILLS ROAD

0125 PM     HAIL             ATHOL                   42.60N  72.23W
08/04/2015  M1.00 INCH       WORCESTER          MA   TRAINED SPOTTER

0136 PM     HAIL             PETERSHAM               42.49N  72.19W
08/04/2015  M1.75 INCH       WORCESTER          MA   PUBLIC

0139 PM     HAIL             TEMPLETON               42.56N  72.07W
08/04/2015  M1.25 INCH       WORCESTER          MA   AMATEUR RADIO

0140 PM     HAIL             WINCHENDON              42.69N  72.04W
08/04/2015  M1.00 INCH       WORCESTER          MA   AMATEUR RADIO

0145 PM     HAIL             GARDNER                 42.58N  72.00W
08/04/2015  M1.00 INCH       WORCESTER          MA   TRAINED SPOTTER

0145 PM     HAIL             ROYALSTON               42.68N  72.19W
08/04/2015  M1.25 INCH       WORCESTER          MA   TRAINED SPOTTER

0147 PM     HAIL             GARDNER                 42.58N  72.00W
08/04/2015  M1.75 INCH       WORCESTER          MA   AMATEUR RADIO

0148 PM     TSTM WND DMG     CUMMINGTON              42.46N  72.89W
08/04/2015                   HAMPSHIRE          MA   AMATEUR RADIO

            TREE DOWN ON CAR

0149 PM     HAIL             ASHBURNHAM              42.64N  71.91W
08/04/2015  M1.00 INCH       WORCESTER          MA   AMATEUR RADIO

0153 PM     TSTM WND DMG     WORTHINGTON CENTER      42.40N  72.94W
08/04/2015                   HAMPSHIRE          MA   AMATEUR RADIO

            DINGLE ROAD LARGE TREE AND WIRES DOWN

0155 PM     TSTM WND DMG     CUMMINGTON              42.46N  72.89W
08/04/2015                   HAMPSHIRE          MA   EMERGENCY MNGR

            TREE ON WIRES

&&

AED

Special weather statement, Aug 4, 2:05 PM EDT, 44 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
205 PM EDT TUE AUG 4 2015

MAZ008>011-041845-
EASTERN HAMPDEN-WESTERN HAMPDEN-WESTERN HAMPSHIRE-EASTERN HAMPSHIRE-
205 PM EDT TUE AUG 4 2015

...STRONG THUNDERSTORM IN SOUTHERN HAMPSHIRE AND HAMPDEN COUNTIES...

AT 205 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM OVER BLANDFORD...OR 12 MILES NORTHWEST OF
WESTFIELD...MOVING EAST AT 40 MPH.

HAIL UP TO THE SIZE OF DIMES AND WIND GUSTS UP TO 50 MPH CAN BE
EXPECTED WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
SPRINGFIELD...CHICOPEE...WESTFIELD...HOLYOKE...AMHERST...
NORTHAMPTON...AGAWAM...WEST SPRINGFIELD...LUDLOW...SOUTH HADLEY...
EASTHAMPTON...LONGMEADOW...EAST LONGMEADOW...BELCHERTOWN...
WILBRAHAM...SOUTHWICK...GRANBY...SOUTHAMPTON...HADLEY AND HAMPDEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GET INDOORS WHEN THIS STORM APPROACHES. WINDS MAY BE STRONG ENOUGH TO
PRODUCE MINOR DAMAGE...SUCH AS DOWNED BRANCHES. MINOR URBAN AND POOR
DRAINAGE FLOODING IS ALSO POSSIBLE.

&&

LAT...LON 4215 7307 4215 7303 4231 7300 4231 7303
      4234 7306 4235 7238 4205 7243 4205 7272
      4204 7272 4205 7273 4205 7305 4210 7307
      4212 7306
TIME...MOT...LOC 1805Z 256DEG 38KT 4223 7298

DUNTEN

Local storm report, Aug 4, 2:12 PM EDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
212 PM EDT TUE AUG 04 2015

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

1255 PM     TSTM WND DMG     AMHERST                 42.38N  72.52W
08/04/2015                   HAMPSHIRE          MA   AMATEUR RADIO

            TREE ON TO HOUSE ON FLAT HILLS ROAD

0125 PM     HAIL             ATHOL                   42.60N  72.23W
08/04/2015  M1.00 INCH       WORCESTER          MA   TRAINED SPOTTER

0136 PM     HAIL             PETERSHAM               42.49N  72.19W
08/04/2015  M1.75 INCH       WORCESTER          MA   PUBLIC

0139 PM     HAIL             TEMPLETON               42.56N  72.07W
08/04/2015  M1.25 INCH       WORCESTER          MA   AMATEUR RADIO

0140 PM     HAIL             WINCHENDON              42.69N  72.04W
08/04/2015  M1.00 INCH       WORCESTER          MA   AMATEUR RADIO

0145 PM     HAIL             GARDNER                 42.58N  72.00W
08/04/2015  M1.00 INCH       WORCESTER          MA   TRAINED SPOTTER

0145 PM     HAIL             ROYALSTON               42.68N  72.19W
08/04/2015  M1.25 INCH       WORCESTER          MA   TRAINED SPOTTER

0147 PM     HAIL             GARDNER                 42.58N  72.00W
08/04/2015  M1.75 INCH       WORCESTER          MA   AMATEUR RADIO

0148 PM     TSTM WND DMG     CUMMINGTON              42.46N  72.89W
08/04/2015                   HAMPSHIRE          MA   AMATEUR RADIO

            TREE DOWN ON CAR

0149 PM     HAIL             ASHBURNHAM              42.64N  71.91W
08/04/2015  M1.00 INCH       WORCESTER          MA   AMATEUR RADIO

0153 PM     TSTM WND DMG     WORTHINGTON CENTER      42.40N  72.94W
08/04/2015                   HAMPSHIRE          MA   AMATEUR RADIO

            DINGLE ROAD LARGE TREE AND WIRES DOWN

0155 PM     TSTM WND DMG     CUMMINGTON              42.46N  72.89W
08/04/2015                   HAMPSHIRE          MA   EMERGENCY MNGR

            TREE ON WIRES

0156 PM     HAIL             WESTMINSTER             42.55N  71.91W
08/04/2015  M1.00 INCH       WORCESTER          MA   SOCIAL MEDIA

0201 PM     HAIL             FITCHBURG               42.58N  71.80W
08/04/2015  M0.75 INCH       WORCESTER          MA   PUBLIC

0204 PM     HAIL             LEOMINSTER              42.53N  71.76W
08/04/2015  M1.50 INCH       WORCESTER          MA   AMATEUR RADIO

0209 PM     HAIL             LEOMINSTER              42.53N  71.76W
08/04/2015  M1.00 INCH       WORCESTER          MA   AMATEUR RADIO

&&

AED

Local storm report, Aug 4, 2:16 PM EDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MA
216 PM EDT TUE AUG 04 2015

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

0157 PM     HAIL             WESTMINSTER             42.55N  71.91W
08/04/2015  M1.75 INCH       WORCESTER          MA   LAW ENFORCEMENT

&&

AED

Local storm report, Aug 4, 2:45 PM EDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
245 PM EDT TUE AUG 04 2015

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

1255 PM     TSTM WND DMG     AMHERST                 42.38N  72.52W
08/04/2015                   HAMPSHIRE          MA   AMATEUR RADIO

            TREE ON TO HOUSE ON FLAT HILLS ROAD

0125 PM     HAIL             ATHOL                   42.60N  72.23W
08/04/2015  M1.00 INCH       WORCESTER          MA   TRAINED SPOTTER

0136 PM     HAIL             PETERSHAM               42.49N  72.19W
08/04/2015  M1.75 INCH       WORCESTER          MA   PUBLIC

0139 PM     HAIL             TEMPLETON               42.56N  72.07W
08/04/2015  M1.25 INCH       WORCESTER          MA   AMATEUR RADIO

0140 PM     HAIL             WINCHENDON              42.69N  72.04W
08/04/2015  M1.00 INCH       WORCESTER          MA   AMATEUR RADIO

0145 PM     HAIL             GARDNER                 42.58N  72.00W
08/04/2015  M1.00 INCH       WORCESTER          MA   TRAINED SPOTTER

0145 PM     HAIL             ROYALSTON               42.68N  72.19W
08/04/2015  M1.25 INCH       WORCESTER          MA   TRAINED SPOTTER

0147 PM     HAIL             GARDNER                 42.58N  72.00W
08/04/2015  M1.75 INCH       WORCESTER          MA   AMATEUR RADIO

0148 PM     TSTM WND DMG     CUMMINGTON              42.46N  72.89W
08/04/2015                   HAMPSHIRE          MA   AMATEUR RADIO

            TREE DOWN ON CAR

0149 PM     HAIL             ASHBURNHAM              42.64N  71.91W
08/04/2015  M1.00 INCH       WORCESTER          MA   AMATEUR RADIO

0153 PM     TSTM WND DMG     WORTHINGTON CENTER      42.40N  72.94W
08/04/2015                   HAMPSHIRE          MA   AMATEUR RADIO

            DINGLE ROAD LARGE TREE AND WIRES DOWN

0155 PM     TSTM WND DMG     CUMMINGTON              42.46N  72.89W
08/04/2015                   HAMPSHIRE          MA   EMERGENCY MNGR

            TREE ON WIRES

0156 PM     HAIL             WESTMINSTER             42.55N  71.91W
08/04/2015  M1.00 INCH       WORCESTER          MA   SOCIAL MEDIA

0157 PM     HAIL             WESTMINSTER             42.55N  71.91W
08/04/2015  M1.75 INCH       WORCESTER          MA   LAW ENFORCEMENT

0201 PM     HAIL             FITCHBURG               42.58N  71.80W
08/04/2015  M0.75 INCH       WORCESTER          MA   PUBLIC

0204 PM     HAIL             LEOMINSTER              42.53N  71.76W
08/04/2015  M1.50 INCH       WORCESTER          MA   AMATEUR RADIO

0209 PM     HAIL             LEOMINSTER              42.53N  71.76W
08/04/2015  M1.00 INCH       WORCESTER          MA   AMATEUR RADIO

0222 PM     HAIL             HUNTINGTON              42.24N  72.88W
08/04/2015  M0.88 INCH       HAMPSHIRE          MA   AMATEUR RADIO

0225 PM     HAIL             SHIRLEY                 42.54N  71.65W
08/04/2015  M1.00 INCH       MIDDLESEX          MA   LAW ENFORCEMENT

0226 PM     TSTM WND DMG     HADLEY                  42.34N  72.59W
08/04/2015                   HAMPSHIRE          MA   AMATEUR RADIO

            WIRES DOWN

0234 PM     HAIL             ACTON                   42.49N  71.43W
08/04/2015  M1.00 INCH       MIDDLESEX          MA   TRAINED SPOTTER

0237 PM     HAIL             WESTFORD                42.58N  71.44W
08/04/2015  M1.00 INCH       MIDDLESEX          MA   TRAINED SPOTTER

0238 PM     TSTM WND DMG     NORTH HATFIELD          42.41N  72.62W
08/04/2015                   HAMPSHIRE          MA   AMATEUR RADIO

            TREE DOWN ON HOUSE

0240 PM     TSTM WND DMG     LITTLETON               42.54N  71.51W
08/04/2015                   MIDDLESEX          MA   AMATEUR RADIO

            TREE DOWN DAHLIA DRIVE

0242 PM     TSTM WND DMG     LITTLETON               42.54N  71.51W
08/04/2015                   MIDDLESEX          MA   AMATEUR RADIO

            WIRES DOWN GRAY ROAD

&&

AED

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 4, 4:11 AM EDT	Special Weather Statement	BOX	Franklin, Hampshire	64 min
Aug 4, 6:09 AM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk, Plymouth	66 min
Aug 4, 6:13 AM EDT	Special Marine Warning	BOX		62 min
Aug 4, 6:53 AM EDT	Severe Thunderstorm Warning	BOX	Barnstable, Bristol, Norfolk, Plymouth	52 min
Aug 4, 6:54 AM EDT	Severe Thunderstorm Warning	BOX	Bristol, Plymouth	51 min
Aug 4, 6:55 AM EDT	Special Marine Warning	BOX		65 min
Aug 4, 7:01 AM EDT	Special Marine Warning	BOX		89 min
Aug 4, 7:15 AM EDT	Severe Thunderstorm Warning	BOX	Barnstable	60 min
Aug 4, 7:48 AM EDT	Special Weather Statement	BOX	Essex	42 min
Aug 4, 7:54 AM EDT	Special Marine Warning	BOX		66 min
Aug 4, 8:06 AM EDT	Severe Thunderstorm Warning	BOX	Essex	24 min
Aug 4, 8:15 AM EDT	Special Marine Warning	BOX		60 min
Aug 4, 12:32 PM EDT	Special Weather Statement	BOX	Franklin	43 min
Aug 4, 12:41 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire, Worcester	64 min
Aug 4, 1:21 PM EDT	Special Weather Statement	BOX	Hampshire	54 min
Aug 4, 1:28 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire	47 min
Aug 4, 1:35 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	40 min
Aug 4, 1:57 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire	63 min
Aug 4, 2:05 PM EDT	Special Weather Statement	BOX	Hampden, Hampshire	40 min
Aug 4, 2:07 PM EDT	Tornado Warning	BOX	Middlesex, Worcester	23 min
Aug 4, 2:17 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire, Worcester	58 min
Aug 4, 2:25 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire, Worcester	65 min
Aug 4, 2:28 PM EDT	Tornado Warning	BOX	Middlesex	32 min
Aug 4, 2:39 PM EDT	Tornado Warning	BOX	Franklin, Worcester	46 min
Aug 4, 2:47 PM EDT	Special Marine Warning	BOX		58 min
Aug 4, 3:00 PM EDT	Special Weather Statement	BOX	Essex	45 min
Aug 4, 3:24 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	48 min
Aug 4, 3:40 PM EDT	Special Marine Warning	BOX		95 min
Aug 4, 3:46 PM EDT	Special Marine Warning	BOX		59 min
Aug 4, 3:50 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Norfolk, Plymouth, Suffolk, Worcester	55 min
Aug 4, 4:07 PM EDT	Areal Flood Warning	BOX	Essex, Middlesex, Norfolk, Suffolk	113 min
Aug 4, 4:11 PM EDT	Special Marine Warning	BOX		64 min
Aug 4, 4:23 PM EDT	Special Weather Statement	BOX	Plymouth	37 min
Aug 4, 5:08 PM EDT	Special Marine Warning	BOX		52 min
Aug 4, 5:18 PM EDT	Special Weather Statement	BOX	Worcester	42 min
Aug 4, 5:45 PM EDT	Special Weather Statement	BOX	Hampshire	45 min
Aug 4, 6:17 PM EDT	Special Weather Statement	BOX	Norfolk, Suffolk	43 min
Aug 4, 7:30 PM EDT	Special Weather Statement	BOX	Suffolk	45 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2015 Every severe thunderstorm warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.