Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 79, NWS Boston/Norton, MA

August 4, 20156 counties in Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 4, 2015, 3:50 PM EDT for 6 counties in Massachusetts. It was in force for 55 min. 35 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, 3:50 PM EDT (19:50 UTC)
Expired: Aug 4, 2015, 4:45 PM EDT
In force: 55 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

Counties Essex County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA

The radar

The Boston radar (KBOX), 45 km from the middle of the area, began a volume at 19:52 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, 3:52 PM EDT	HAIL 0.88	Maynard, MA
Aug 4, 3:52 PM EDT	HAIL 1	Framingham, MA
Aug 4, 3:52 PM EDT	HAIL 1	Wayland, MA
Aug 4, 3:52 PM EDT	HAIL 1.25	Sudbury, MA
Aug 4, 3:52 PM EDT	HAIL 1.5	Sudbury, MA
Aug 4, 3:54 PM EDT	HAIL 1.5	Wayland, MA
Aug 4, 3:56 PM EDT	HAIL 0.75	Waltham, MA
Aug 4, 4:00 PM EDT	TSTM WND DMG	Waltham, MA	TREE AND WIRES DOWN ON AMORY ROAD
Aug 4, 4:00 PM EDT	TSTM WND DMG	Wellesley, MA	TREE DOWN ON WESTON ROAD AND DOVER ROAD
Aug 4, 4:00 PM EDT	HAIL 1	Wellesley, MA
Aug 4, 4:00 PM EDT	HAIL 1.5	Weston, MA
Aug 4, 4:01 PM EDT	HAIL 1	Watertown, MA
Aug 4, 4:05 PM EDT	HAIL 1	Newton, MA
Aug 4, 4:05 PM EDT	HAIL 1	Waltham, MA
Aug 4, 4:05 PM EDT	HAIL 1.5	Belmont, MA
Aug 4, 4:07 PM EDT	HAIL 1.5	Brighton, MA
Aug 4, 4:08 PM EDT	TSTM WND DMG	Brookline, MA	TREE ON HOUSE
Aug 4, 4:08 PM EDT	TSTM WND DMG	Brookline, MA	TREES AND WIRES DOWN ON COTTAGE STREET AND DEAN ROAD
Aug 4, 4:08 PM EDT	TSTM WND GST 58	Brookline, MA
Aug 4, 4:10 PM EDT	TSTM WND DMG	Roslindale, MA	WIRES DOWN ON MURRAY HILL ROAD
Aug 4, 4:10 PM EDT	TSTM WND DMG	West Roxbury, MA	SEVERAL TREES AND WIRES DOWN ON REDLANDS ROAD...TREE DOWN ON HOUSE ON BELLEVUE STREET...TREES DOWN ON VFW PARKWAY
Aug 4, 4:10 PM EDT	HAIL 1.25	Somerville, MA
Aug 4, 4:10 PM EDT	HAIL 1.5	Brookline, MA
Aug 4, 4:10 PM EDT	HAIL 1.75	Cambridge, MA	GOLF BALL SIZE HAIL IN HARVARD SQUARE
Aug 4, 4:10 PM EDT	HAIL 1.75	Cambridge, MA
Aug 4, 4:10 PM EDT	HAIL 2	Waltham, MA
Aug 4, 4:11 PM EDT	TSTM WND DMG	Boston, MA	TREE AND WIRES DOWN ON COLBERG AVENUE...TREE DOWN ON HOUSE ON ALDRICH STREET
Aug 4, 4:11 PM EDT	HAIL 1.75	Newton, MA
Aug 4, 4:11 PM EDT	HAIL 1.75	South Boston, MA
Aug 4, 4:13 PM EDT	HAIL 2	Jamaica Plain, MA
Aug 4, 4:14 PM EDT	HAIL 1	Watertown, MA
Aug 4, 4:15 PM EDT	TSTM WND DMG	Boston, MA	REPORTS OF MULTIPLE TREES DOWN IN VARIOUS LOCATIONS
Aug 4, 4:20 PM EDT	TSTM WND DMG	Braintree, MA	LARGE TREE DOWN ON THE 1200 BLOCK OF WASHINGTON STREET
Aug 4, 4:20 PM EDT	HAIL 1	Everett, MA
Aug 4, 4:25 PM EDT	MARINE HAIL 1	Boston, MA	OVER BOSTON HARBOR

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 32 storm reports to this severe thunderstorm warning; the first came 2 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, 7.8 hours before the alert went out and 112 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.

651 
WUUS51 KBOX 041950
SVRBOX
MAC009-017-021-023-025-027-042045-
/O.NEW.KBOX.SV.W.0079.150804T1950Z-150804T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
350 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...
  NORTHWESTERN PLYMOUTH COUNTY IN SOUTHEASTERN MASSACHUSETTS...
  NORFOLK COUNTY IN EASTERN MASSACHUSETTS...
  SOUTHEASTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  SUFFOLK COUNTY IN EASTERN MASSACHUSETTS...
  MIDDLESEX COUNTY IN NORTHEASTERN MASSACHUSETTS...

* UNTIL 445 PM EDT

* AT 349 PM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG
  A LINE EXTENDING FROM LITTLETON TO FRAMINGHAM TO NEAR
  NORTHBRIDGE...AND WAS MOVING EAST AT 40 MPH.

* SOME LOCATIONS IMPACTED INCLUDE...
  BOSTON...CAMBRIDGE...BROCKTON...QUINCY...LYNN...NEWTON...
  SOMERVILLE...FRAMINGHAM...WALTHAM...MALDEN...BROOKLINE...MEDFORD...
  WEYMOUTH...REVERE...PEABODY...ARLINGTON...EVERETT...SALEM...
  BILLERICA AND BEVERLY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND LARGE HAIL. GO
INDOORS AND STAY AWAY FROM WINDOWS.  DRIVERS SHOULD PREPARE FOR LOW
VISIBILITY AND AVOID FLOODED ROADS.

THIS IS A VERY DANGEROUS SITUATION. THESE STORMS HAVE A HISTORY OF 
PRODUCING DESTRUCTIVE WINDS AND LARGE HAIL. GO INSIDE AND STAY AWAY 
FROM WINDOWS.
 
MINOR FLOODING CAN BE EXPECTED FROM TORRENTIAL RAINFALL. DO NOT DRIVE
THROUGH FLOODED ROADS.

&&

LAT...LON 4254 7090 4254 7087 4242 7091 4246 7094
      4236 7097 4237 7105 4225 7096 4225 7088
      4234 7088 4226 7087 4220 7072 4220 7071
      4211 7067 4203 7081 4215 7181 4230 7150
      4260 7156 4260 7064
TIME...MOT...LOC 1949Z 275DEG 34KT 4253 7148 4230 7143 4217 7168 
$$

DUNTEN

3 follow-up statements

892 
WWUS51 KBOX 042009
SVSBOX

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

MAC027-042019-
/O.CAN.KBOX.SV.W.0079.000000T0000Z-150804T2045Z/
WORCESTER MA-
409 PM EDT TUE AUG 4 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WORCESTER COUNTY
IS CANCELED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELED.

LAT...LON 4254 7090 4253 7087 4243 7091 4241 7099
      4237 7097 4237 7105 4230 7105 4232 7101
      4225 7096 4225 7088 4229 7088 4220 7072
      4211 7067 4206 7076 4203 7082 4209 7108
      4211 7150 4235 7137 4260 7132 4260 7064
TIME...MOT...LOC 2009Z 275DEG 34KT 4252 7125 4229 7120 4216 7145 

$$

MAC009-017-021-023-025-042045-
/O.CON.KBOX.SV.W.0079.000000T0000Z-150804T2045Z/
ESSEX MA-PLYMOUTH MA-NORFOLK MA-SUFFOLK MA-MIDDLESEX MA-
409 PM EDT TUE AUG 4 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR SOUTHERN ESSEX...NORTHWESTERN PLYMOUTH...NORFOLK...SUFFOLK AND
SOUTHEASTERN MIDDLESEX COUNTIES...

AT 409 PM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO GOLF
BALL SIZE AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM BEDFORD TO NEEDHAM TO MEDWAY...
MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
BOSTON...CAMBRIDGE...BROCKTON...QUINCY...LYNN...NEWTON...
SOMERVILLE...FRAMINGHAM...WALTHAM...MALDEN...BROOKLINE...MEDFORD...
WEYMOUTH...REVERE...PEABODY...ARLINGTON...EVERETT...SALEM...BILLERICA
AND BEVERLY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND DESTRUCTIVE HAIL. GO
INSIDE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. DRIVERS SHOULD EXPECT POOR VISIBILITY AND AVOID FLOODED
ROADS.

THIS IS A VERY DANGEROUS SITUATION! THESE STORMS HAVE A HISTORY OF
PRODUCING DESTRUCTIVE WINDS AND LARGE HAIL. MOVE INSIDE AND STAY AWAY
FROM WINDOWS.
 
TORRENTIAL RAINFALL WAS ALSO OCCURRING WITH THESE STORMS. DO NOT
DRIVE THROUGH FLOODED ROADS.

&&

LAT...LON 4254 7090 4253 7087 4243 7091 4241 7099
      4237 7097 4237 7105 4230 7105 4232 7101
      4225 7096 4225 7088 4229 7088 4220 7072
      4211 7067 4206 7076 4203 7082 4209 7108
      4211 7150 4235 7137 4260 7132 4260 7064
TIME...MOT...LOC 2009Z 275DEG 34KT 4252 7125 4229 7120 4216 7145 

$$

DUNTEN

171 
WWUS51 KBOX 042030
SVSBOX

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

MAC023-042039-
/O.CAN.KBOX.SV.W.0079.000000T0000Z-150804T2045Z/
PLYMOUTH MA-
430 PM EDT TUE AUG 4 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN PLYMOUTH COUNTY
IS CANCELED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELED.

LAT...LON 4254 7090 4253 7087 4243 7091 4241 7099
      4237 7097 4237 7105 4230 7105 4227 7097
      4226 7097 4224 7130 4245 7104 4260 7097
      4260 7064
TIME...MOT...LOC 2029Z 240DEG 62KT 4257 7108 4234 7103 4221 7128 

$$

MAC009-017-021-025-042045-
/O.CON.KBOX.SV.W.0079.000000T0000Z-150804T2045Z/
ESSEX MA-NORFOLK MA-SUFFOLK MA-MIDDLESEX MA-
430 PM EDT TUE AUG 4 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR SOUTHEASTERN ESSEX...NORTHEASTERN NORFOLK...SUFFOLK AND EAST
CENTRAL MIDDLESEX COUNTIES...

AT 429 PM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NORTH READING TO BOSTON TO NEAR MEDFIELD...MOVING
NORTHEAST AT 70 MPH.

LOCATIONS IMPACTED INCLUDE...
BOSTON...CAMBRIDGE...QUINCY...LYNN...NEWTON...SOMERVILLE...MALDEN...
BROOKLINE...MEDFORD...REVERE...PEABODY...EVERETT...SALEM...BEVERLY...
CHELSEA...NEEDHAM...GLOUCESTER...MILTON...MELROSE AND SAUGUS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND DESTRUCTIVE HAIL. GO
INSIDE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. DRIVERS SHOULD EXPECT POOR VISIBILITY AND AVOID FLOODED
ROADS.

THIS IS A VERY DANGEROUS SITUATION! THESE STORMS HAVE A HISTORY OF
PRODUCING DESTRUCTIVE WINDS AND LARGE HAIL. MOVE INSIDE AND STAY AWAY
FROM WINDOWS.
 
TORRENTIAL RAINFALL WAS ALSO OCCURRING WITH THESE STORMS. DO NOT
DRIVE THROUGH FLOODED ROADS.

&&

LAT...LON 4254 7090 4253 7087 4243 7091 4241 7099
      4237 7097 4237 7105 4230 7105 4227 7097
      4226 7097 4224 7130 4245 7104 4260 7097
      4260 7064
TIME...MOT...LOC 2029Z 240DEG 62KT 4257 7108 4234 7103 4221 7128 

$$

DUNTEN

634 
WWUS51 KBOX 042040
SVSBOX

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

MAC009-017-021-025-042049-
/O.EXP.KBOX.SV.W.0079.000000T0000Z-150804T2045Z/
ESSEX MA-NORFOLK MA-SUFFOLK MA-MIDDLESEX MA-
440 PM EDT TUE AUG 4 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ESSEX...
NORTHEASTERN NORFOLK...SUFFOLK AND EAST CENTRAL MIDDLESEX COUNTIES
WILL EXPIRE AT 445 PM EDT...
    
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
AREA. THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4254 7090 4253 7087 4243 7091 4241 7099
      4237 7097 4237 7105 4230 7105 4227 7097
      4226 7097 4224 7130 4245 7104 4260 7097
      4260 7064
TIME...MOT...LOC 2038Z 275DEG 34KT 4257 7108 4234 7103 4221 7128 

$$

DUNTEN

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, 2:58 PM EDT, 52 minutes earlier.

Area forecast discussion, Aug 4, 2:58 PM EDT, 52 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAUNTON MA
258 PM EDT TUE AUG 4 2015

.SYNOPSIS...

THUNDERSTORMS CONTINUING INTO THE EVENING HOURS MAINLY PUSHING E.
CONTINUED STRONG TO SEVERE THREATS. DRY...WARM AND LESS HUMID
WEATHER ARRIVES THURSDAY. A PERIOD OF UNSETTLED WEATHER IS
POSSIBLE FRIDAY INTO THIS WEEKEND...BUT CONFIDENCE REMAINS LOW
REGARDING THE TIMING AND COVERAGE OF ANY POTENTIAL WET WEATHER.

&&

.NEAR TERM /THROUGH TONIGHT/...

INTO THIS EVENING...

STRONG TO SEVERE THUNDERSTORMS PERSISTING IN AN AREA OF BETTER
MOISTURE / HIGHER THETA-E FORCED AHEAD OF A MID-LEVEL IMPULSE. A
VERY UNSTABLE ENVIRONMENT WITH DECENT LAPSE RATES THROUGHOUT THE
COLUMN WITH SW-NE UNI-DIRECTIONAL 0-6 KM BULK SHEAR EXCEEDING 50
KTS...WITH SOME TURNING EVIDENT WITHIN THE HIGH-RES GUIDANCE IN
THE 0-1/0-3 KM LAYER. CHECK OUT THE 18Z ALBANY SOUNDINGS WHERE
MUCAPE VALUES ARE NEARLY 3K J/KG AND HIGHLIGHT EXACTLY THE ABOVE
POINTS.

FOCUS MAINLY ACROSS THE N/W REGIONS AWAY FROM WHERE THE DRY-SLOT
IS APPARENT WITHIN THE WATER VAPOR LOOP OVER SE NEW ENGLAND...
THOUGH ACTIVITY IS EXPECTED TO SHIFT S/E INTO THE EVENING HOURS
AHEAD OF A FRONTAL BOUNDARY PUSHED OFFSHORE BY THE MID-LEVEL
IMPULSE.

LIKELY POPS WITH PRIORITIZED THREATS OF THE FOLLOWING: HEAVY RAIN /
FREQUENT LIGHTNING / URBAN AND POOR DRAINAGE FLOODING ISSUES /
STRONG TO DAMAGING WINDS / LARGE HAIL. THERE IS THE POSSIBILITY
OF A TORNADO AS WELL AS WE HAVE ALREADY SEEN A FEW DOPPLER-RADAR
INDICATED.

WATCH NUMBER 469 CONTINUES TILL 8 PM. MAY NEED TO EXPAND INTO N CT
AND RI. CONTINUE TO EVALUATE THE ENVIRONMENT. AT THIS TIME DOWN-
STREAM TRENDS DO NOT FAVOR AN EXPANSION OF THE WATCH. LOOKS LIKE
MOST OF THE ENERGY IS LOCKED ALONG THE LEADING EDGE / PVA OF THE
MID-LEVEL VORTEX DISCERNED FROM HIGH-RES GUIDANCE AND WATER VAPOR
IMAGERY.

TONIGHT...

MID-LEVEL IMPULSE AND ACCOMPANYING TROUGH PUSH E SUBSEQUENTLY EASING
THE SURFACE FRONTAL BOUNDARY OFFSHORE ALONG WITH DEEPER MOISTURE AND
HIGHER THETA-E AIR. WILL SEE SHOWERS / THUNDERSTORMS PUSH OUT TO SEA
WITH SOME OF THE STORMS STRONG TO SEVERE LINGERING LONGEST OVER THE
CAPE AND ISLANDS WITHIN A LOW-LEVEL CONVERGENT ENVIRONMENT OF HIGHER
THETA-E AIR. ANTICIPATED CONCLUSION SHORTLY AFTER MIDNIGHT OF
WET- WEATHER. LIGHT W-WINDS PREVAILING AND DRIER AIR WORKING IN.
EXPECT IT TO CLEAR OUT W TO E ACCORDINGLY. LOWS DROPPING IN AND
AROUND THE LOW-60S WITH SPOTS N/W INTO THE UPPER-50S AS THERE IS
AN OPPORTUNITY FOR RADIATIONAL COOLING TO PROCEED. WITH THAT THERE
IS THE POTENTIAL FOR PATCHY DENSE FOG...ESPECIALLY THOSE AREAS
WHICH OBSERVED RAIN DURING THE DAY.

&&

.SHORT TERM /WEDNESDAY THROUGH WEDNESDAY NIGHT/...

WEDNESDAY...

ANOTHER MID-LEVEL IMPULSE SWEEPS THROUGH THE BROAD CYCLONIC FLOW
FOLLOWED BY THE MID-LEVEL TROUGH. ENOUGH FORCING WITHIN THE LOW- TO
MID-LEVEL ATMOSPHERIC PROFILE TO INVOKE SOME SHOWERY WEATHER...YET
TWO THINGS: ONE IS THAT MOISTURE IS LIMITED WITH DRIER AIR AS THE
SURFACE...INSTABILITY SHOULD BE RATHER WEAK...AND TWO IS THAT A DRY-
SUBSIDENCE INVERSION WILL BE WORKING DOWN THROUGH THE ATMOSPHERIC
PROFILE ACROSS THE AREA PUTTING A SQUASH ON ACTIVITY. WHILE CAN
NOT DISAGREE WITH PRIOR FORECASTER OF THE COOLER TEMPERATURES
ALOFT YIELDING SMALL HAIL...FEEL THAT DRY AIR AND SUBSIDENCE
ACROSS THE REGION MAY LIMIT THE LIFT. REMOVED FROM PREVAILING IN
THE FORECAST.

SO WITH THE FORCING APPARENT WILL GO WITH CHANCE POPS FOR SCATTERED
SHOWERS AND MAYBE A THUNDERSTORM FOCUSING ON THE EARLY-HALF OF
THE DAY. FROM THEN ON DRIER WEATHER WITH BREEZY W-WINDS. A TAD
COOLER AS THE AIR-MASS ALOFT COOLS. HIGHS AROUND THE LOW 80S.
SEASONABLE.

WEDNESDAY NIGHT...

BEHIND THE TROUGH IT LOOKS TO REMAIN A BIT BREEZY W. CAN NOT RULE
OUT A FEW LOCALES EXPERIENCING LIGHT WINDS OVERNIGHT. SHOULD SEE
QUIET WEATHER AND CLEAR CONDITIONS. ALL FACTORS COMBINED...THERE IS
SOME POTENTIAL FOR RADIATIONAL COOLING AND HIGHEST CONFIDENCE IS TO
THE N/W WITHIN SHELTERED VALLEY REGIMES. LOWS DOWN INTO THE MID- TO
UPPER-50S WHILE LOW-60S ALONG THE COAST. DEWPOINTS IN THE LOW-50S.
AN END TO THE HEAT AND HUMIDITY AND QUITE REFRESHING.

&&

.LONG TERM /THURSDAY THROUGH TUESDAY/...

HIGHLIGHTS...

* UNSETTLED WEATHER REMAINS POSSIBLE FRIDAY INTO THE WEEKEND
* TEMPERATURES TRENDING BELOW NORMAL THROUGH MOST IF NOT THE ENTIRE
  PERIOD

OVERVIEW AND MODEL PREFERENCES...

NOTING FAIRLY GOOD AGREEMENT WITH 12Z OPERATIONAL MODELS RUNS INTO
FRIDAY...THEN EACH GOES ON THEIR MERRY OWN WAY WHICH LENDS TO LOW
CONFIDENCE BEYOND FRIDAY. ONE BIG QUESTION WILL BE HOW THE H5 CUTOFF
LOW ACROSS QUEBEC AND MARITIMES FLATTENS OUT...WHICH ALSO FLATTENS
OUT THE FLOW ACROSS MOST OF THE NORTHERN STREAM. DEPENDING UPON
WHETHER THIS UPPER LEVEL SYSTEM FLATTENS OUT WILL DETERMINE HOW FAR
S THE LARGE HIGH PRES RIDGE BUILDS OUT OF CENTRAL CANADA. ALSO
NOTING A STALLED FRONT S OF THE REGION WHICH HAS A SHORT WAVE MOVING
ALONG IT...WHICH COULD PUSH SOME MOISTURE INTO PORTIONS OF SOUTHERN
NEW ENGLAND. ANOTHER FLY IN THE OINTMENT IS THE POSSIBLE
AMPLIFICATION OF LONG WAVE TROUGH ACROSS THE MID ATLC REGION THIS
WEEKEND.

NEEDLESS TO SAY...LOW CONFIDENCE FORECAST BEYOND FRIDAY DUE TO THE
WIDE VARIANCE OF OP MODEL RUN SOLUTIONS. WENT ALONG WITH MOST
AVAILABLE GUIDANCE /EXCEPT GFS/ THROUGH FRIDAY...THEN TRANSITIONED
OVER TO AN ENSEMBLE MODEL BLEND SIMILAR TO WPC GUIDANCE FROM
SATURDAY ONWARD.

DETAILS...

THURSDAY...HIGH PRESSURE BUILDS OUT OF CENTRAL CANADA INTO UPSTATE
NY. WEAK SHORT WAVE MOVES ACROSS NORTHERN NEW ENGLAND AND...WITH
LACK OF AVAILABLE MOISTURE IN THE GENERAL W-NW FLOW...EXPECT DRY
CONDITIONS. HIGHS LOOK TO RUN AROUND 80 DEGREES...SLIGHTLY BELOW
SEASONAL NORMS.

THURSDAY NIGHT THROUGH SATURDAY...SHORT WAVE MOVING ALONG STALLED
FRONT FROM THE OHIO VALLEY. COULD START TO SEE SOME MOISTURE MOVING
NE INTO N CT/RI/SE MA OVERNIGHT THU NIGHT THEN PUSH FURTHER N DURING
FRI. STILL A LOT OF QUESTION ON HOW FAR THIS RAIN WILL PUSH INTO THE
REGION...IF AT ALL. FOR NOW...KEPT CONTINUITY GOING FROM THE
PREVIOUS FORECAST WITH MAINLY CHANCE POPS...THOUGH LOW LIKELY IN
PLACE ACROSS S COASTAL AREAS FRI INTO FRI NIGHT.

HAVE LOWERED POPS TO CHANCE FOR EARLY SATURDAY THEN SHOULD PUSH E
DURING THE AFTERNOON INTO SAT EVENING.

SUNDAY THROUGH WEDNESDAY...MUCH OF THIS FORECAST CONTINUES TO
DEPEND UPON THE FRI-SAT PATTERN SETS UP. AT THIS POINT...LOOKS LIKE
IT SHOULD BE MAINLY DRY BUT COOL ON SUNDAY. MODELS SIGNALING ANOTHER
H5 LONG WAVE TROUGH DIGGING ACROSS EASTERN GREAT LAKES AS H5 LOW
TRYING TO CUT OFF AGAIN ACROSS HUDSON BAY. MAY SEE PERIODS OF WIDELY
SCT SHOWERS FROM TIME TO TIME DURING THIS TIMEFRAME...BUT LOW
CONFIDENCE ON TIMING AND PLACEMENT.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...

FORECASTER CONFIDENCE LEVELS...

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

SHORT-TERM /THROUGH WEDNESDAY NIGHT/...

INTO THIS EVENING...MODERATE CONFIDENCE.
STRONG TO SEVERE TSRA WITH POTENTIAL THREATS: LARGE HAIL / STRONG
TO DAMAGING WINDS MAINLY OUT OF THE W / HEAVY RAIN WITH MVFR-IFR
VSBYS. MVFR TO LOW-END VFR CIGS. LOW RISK TORNADO. ACTIVITY
SWEEPING ENE AT 25-30 KTS.

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...MODERATE CONFIDENCE.
SHRA/TSRA LINGER OVER THE SE TERMINALS TILL AROUND 6-9Z. TEMPO
MVFR- IFR CONDITIONS. OTHERWISE LIGHT W-WINDS AND VFR...THOUGH
TERMINALS WHICH EXPERIENCED RAIN DURING THE DAY LIKELY TO SEE
MVFR-LIFR PATCHY DENSE FOG.

WEDNESDAY...HIGH CONFIDENCE.
SCT SHRA WITH LOWER POSSIBILITY OF TSRA. LOW RISK OF SMALL HAIL.
BREEZY W-WINDS WITH GUSTS UPWARDS OF 20 KTS. SCT-BKN LOW-END VFR
CIGS.

WEDNESDAY NIGHT...HIGH CONFIDENCE.
W-WINDS DIMINISHING. VFR. SKC. LOW CONFIDENCE PATCHY DENSE FOG.

KBOS TERMINAL...MODERATE CONFIDENCE. ENOUGH CONFIDENCE THAT STORMS
WILL IMPACT THE TERMINAL WITH SIGNIFICANT IMPACT...BUT UNCERTAIN
ON THE EXACT TIMING.

KBDL TERMINAL...MODERATE CONFIDENCE. WATCHING CLOSELY FOR STORM
IMPACT. STORMS COULD POTENTIALLY HOLD OFF TO THE N.

OUTLOOK /THURSDAY THROUGH SUNDAY/...

THURSDAY...HIGH CONFIDENCE. VFR.

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

SUNDAY...LOW CONFIDENCE MAINLY FOR TIMING. MAY SEE LEFTOVER SHOWERS
WITH BRIEF MVFR CONDITIONS EARLY...THEN VFR.

&&

.MARINE...

FORECASTER CONFIDENCE LEVELS...

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

SHORT-TERM /THROUGH TUESDAY NIGHT/...

TONIGHT...MODERATE CONFIDENCE.
SHOWERS AND THUNDERSTORMS LINGER OVER THE SE WATERS ALONG WITH
BREEZY SW-WINDS. SUBSEQUENT 5-6 FOOT SEAS BEGINNING TO DIMINISH
INTO MORNING AS THE WET-WEATHER AHEAD OF A FRONTAL BOUNDARY PUSHES
OUT TO SEA BEHIND WHICH WINDS BACK W.

WEDNESDAY...HIGH CONFIDENCE.
W-WINDS CONTINUING PERHAPS BREEZY WITH GUSTS UPWARDS OF 20 KTS.
SEAS WILL GRADUALLY DIMINISH THROUGH THE PERIOD. THERE IS THE
POSSIBILITY OF SOME RENEWED SHOWER ACTIVITY THOUGH LIKELY CLOSER
TO THE SHORE.

WEDNESDAY NIGHT...HIGH CONFIDENCE.
W-WINDS DIMINISHING ALLOWING SEAS TO RELAX. SHOULD SEE QUIET
BOATING WEATHER.

OUTLOOK /THURSDAY THROUGH SUNDAY/...

THURSDAY-THURSDAY NIGHT...HIGH CONFIDENCE. WINDS AND SEAS BELOW
SMALL CRAFT CRITERIA. LOCALLY REDUCED VSBYS IN LIGHT RAIN THU NIGHT.

FRIDAY THROUGH SUNDAY...MODERATE CONFIDENCE. EASTERLY WINDS GUSTING
UP TO 20 KT. WITH ONSHORE WINDS...SEAS LOOK TO BUILD UP TO 5-6 FT
HIGHEST ACROSS THE EASTERN OUTER WATERS. RAIN LIKELY FRIDAY NIGHT
THROUGH SATURDAY NIGHT...LIMITING VISIBILITIES AT TIMES...THEN
SHOULD IMPROVE DURING SUNDAY.

&&

.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...SIPPRELL/EVT
NEAR TERM...SIPPRELL
SHORT TERM...SIPPRELL
LONG TERM...EVT
AVIATION...SIPPRELL/EVT
MARINE...SIPPRELL/EVT

Hazardous weather outlook, Aug 4, 12:54 PM EDT, 2 hours 56 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, 1:59 PM EDT, 1 hour 51 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, 1 hour 45 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, 1 hour 38 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, 1 hour 34 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, 1 hour 5 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

Special weather statement, Aug 4, 3:00 PM EDT, 50 minutes before

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

MAZ006-007-041945-
EASTERN ESSEX-WESTERN ESSEX-
300 PM EDT TUE AUG 4 2015

AT 300 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM OVER WEST NEWBURY...OR 7 MILES EAST OF
HAVERHILL...MOVING EAST AT 40 MPH.

HAIL UP TO THE SIZE OF DIMES AND WIND GUSTS UP TO 40 MPH CAN BE
EXPECTED WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
HAVERHILL...NEWBURYPORT...AMESBURY...SALISBURY...GEORGETOWN...
NEWBURY...GROVELAND...MERRIMAC...ROWLEY...WEST NEWBURY AND SOUTH
HAMPTON.

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 4286 7085 4287 7082 4283 7081 4281 7087
      4280 7083 4282 7082 4274 7079 4277 7082
      4273 7082 4271 7101 4282 7106 4286 7103
      4289 7093
TIME...MOT...LOC 1900Z 255DEG 36KT 4280 7095

KJC

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, 2:49 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex	41 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, 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.