Massachusetts, 2010

Flooding in Massachusetts, March 29 to 31, 2010

March 29 to 31, 2010 · NWS BOX · 6 events in 6 counties and zones

A low pressure system sat just south of Long Island for two days, bringing heavy rain to much of Southern New England during that time. A persistent southerly low level jet brought very moist air into the area, which resulted in high rainfall rates.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
17
Property damage
$56 million
Crop damage
None recorded
Events
6

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.

What happened

The episode as NWS BOX wrote it up.

A low pressure system sat just south of Long Island for two days, bringing heavy rain to much of Southern New England during that time. A persistent southerly low level jet brought very moist air into the area, which resulted in high rainfall rates. A coastal front along the I-95 corridor enhanced rainfall in that area. This event followed a heavy rainfall and record flooding event in mid-March as well as a second lesser rain event about a week prior. Rivers across much of Massachusetts and Rhode Island were still high from those events and warm temperatures in northern Vermont and New Hampshire resulted in a period of snowmelt, that resulted in rises on both the mainstem Connecticut and Merrimack Rivers. All of these factors led to a second record rainfall and flooding event.

Two day rainfall totals across Southern New England ranged from an inch to ten inches. Though concentrated in Rhode Island and southeastern Massachusetts, all of Southern New England was affected by the flooding. In Massachusetts, two day rainfall totals ranged from one and a half inches on Cape Cod to nearly eight inches in Bristol County. Providence, Boston, and Blue Hill Observatory in Milton, MA set record monthly precipitation totals during the month of March. Providence also set the record for the wettest month ever in the period of record. Both the Pawtuxet River in Rhode Island and the Sudbury River in Massachusetts set floods of record. Nearly 1000 Massachusetts National Guardsmen were activated to aid in sandbagging and evacuations. President Obama issued federal disaster declarations for seven counties in Massachusetts following the mid-March flooding. After this second round of flooding, residents of the seven counties (Bristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk, and Worcester) received an automatic extension for filing their state and federal taxes.

What forecasters said that day

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 Mar 29, 4:31 PM EST, 1 hour 3 minutes earlier.

Area forecast discussion, Mar 29, 4:31 PM EST, 1 hour 3 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAUNTON MA
531 PM EDT MON MAR 29 2010

.SYNOPSIS...
A LONG DURATION STORM WILL BRING PERIODS OF HEAVY RAINFALL THROUGH
TUESDAY AFTERNOON.  THERE IS HIGH CONFIDENCE THAT THIS WILL RESULT
IN MODERATE TO MAJOR FLOODING ACROSS MOST OF SOUTHERN NEW ENGLAND.
SPRING-LIKE WEATHER RETURNS TO THE REGION THURSDAY THROUGH SUNDAY AS
A RIDGE OF HIGH PRESSURE BUILDS INTO THE NORTHEAST... YIELDING DRY
WEATHER ALONG WITH A SIGNIFICANT WARMING TREND OVER THE INTERIOR BUT
FOGGY EARLY MORNINGS.

&&

.NEAR TERM /UNTIL MIDNIGHT TONIGHT/...
HEAVY RAIN ASSOCD WITH SOUTHERLY LLJ AND RIGHT ENTRANCE REGION OF
STRONG UPPER JET CONTINUES TO TRAIN NWD ACROSS SNE WITH HEAVIEST
RAINFALL SO FAR BETWEEN CT VALLEY AND I95 CORRIDOR. HOWEVER...THE
AREA OF RAIN HAS NOT MADE MUCH PROGRESS EAST LAST SEVERAL HOURS WITH
STEADIER RAIN STILL WEST OF CAPE COD AS DEEP SOUTHERLY FLOW IN PLACE.

WE DO EXPECT THE INTENSITY OF THE RAINFALL TO DIMINISH TEMPORARILY
THIS EVENING AS THE LLJ SHIFTS EAST AND THE UPPER JET WEAKENS A BIT.
PROBABLY NOT MUCH RAIN THROUGH MIDNIGHT FOR OUTER CAPE AND ACK.

&&

.SHORT TERM /MIDNIGHT TONIGHT THROUGH TUESDAY NIGHT/...
PART 2 OF THIS HISTORIC FLOODING RAIN EVENT WILL OCCUR LATER TONIGHT
THROUGH TUE AS VERTICALLY STACKED COASTAL LOW LIFTS SLOWLY NORTH
ALONG THE MID ATLC COAST.  THE SOUTHERLY LLJ WILL GRADUALLY SHIFT
TO AN E/SE ORIENTED JET AND THIS WILL TRANSPORT MORE DEEP MOISTURE
INTO SNE WITH VERY STRONG OMEGA.  EASTERLY INFLOW IS EVEN STRONGER
THAN SOUTHERLY INFLOW OF TODAY WITH +3 TO +4 SD AND PWAT ANOMALY
+2.5 SD...SO EVEN HEAVIER RAINFALL IS LIKELY LATER TONIGHT INTO
TUE.

GFS/NAM/SREF FOCUS AXIS OF HEAVIEST RAIN ACROSS I95 CORRIDOR WHILE
ECMWF IS FURTHER WEST.  WE PREFER THE GFS/NAM AXIS OF QPF AS PWAT
PLUME IS FOCUSED ACROSS I95 CORRIDOR PRETTY MUCH DURING THE ENTIRE
EVENT AND THIS IS WHERE WE EXPECT HEAVIEST RAINFALL.  IN
ADDITION...DEVELOPMENT OF COASTAL FRONT WILL ENHANCE RAINFALL RATES
IN THIS REGION WITH VERY HEAVY RAINFALL LIKELY TUE MORNING IN THE
COASTAL PLAIN SHIFTING NORTH TO NORTHERN MA AND MERRIMACK VALLEY TUE
AFTERNOON AS THE LLJ MOVES NWD ACROSS THE REGION.

ISOLATED THUNDER POSSIBLE AT THE NOSE OF THE JET TUE MORNING AS
MODELS INDICATE SOME ELEVATED INSTABILITY BUT WE DID NOT MENTION AT
THIS TIME.

WE FOLLOWED GFS/NAM/HPC BLEND WITH MORE WEIGHT GIVEN TO HEAVIER NAM
WHICH HAS DONE WELL WITH RECENT EXCESSIVE RAIN EVENTS AND IS
PROBABLY HANDLING THE MESOSCALE LIFT BETTER THAN GFS.  RAINFALL
TOTALS OF 3-6" EXPECTED ACROSS MUCH OF THE REGION WITH ISOLATED 8"
AMOUNTS POSSIBLE.  LESS THAN 3" AMOUNTS EXPECTED FOR FAR NW AND FAR
SE PORTIONS OF THE FORECAST AREA.

WIND...MARGINAL WIND ADVISORY CRITERIA POSSIBLE ALONG THE COAST FOR
A 3-6 HR PERIOD FROM 15-21Z TUE.  NO ADVSY AT THIS TIME AS MAX PRES
FALLS TO THE SW WEAKEN AS THEY MOVE ACROSS REGION AND LOW LEVEL
INVERSION SHOULD LIMIT GUSTS.

PLEASE SEE COASTAL FLOODING SECTION BELOW FOR COASTAL FLOOD INFO.

TUE NIGHT...BRUNT OF HEAVY RAINFALL SHOULD BE LIFTING TO THE NORTH
BUT MAY LINGER INTO THE EVENING MERRIMACK VALLEY.  LEFTOVER LIGHT
RAIN/DRIZZLE AND AREAS OF FOG WILL LIKELY PERSIST MUCH OF THE
NIGHT.

&&

.LONG TERM /WEDNESDAY THROUGH MONDAY/...
LEFTOVERS WED AS BIG COASTAL LOW DEPARTS SLOWLY EASTWARD OF NANTUCKET
BUT STILL CAUGHT IN THE VAST LOW TOP BUT VERY MOIST CYCLONIC CIRCULATION.
09Z SREF POPS USED. 12Z MAVMOS GUIDE TEMPS BLENDED WITH 30 PCT COOLER
MET NAM. COULD BE A CHILLY DAY ON CAPE COD--40S.

THURSDAY THROUGH SATURDAY...
WARMS UP INTERIOR. HOWEVER...COASTAL COOLING OCEAN BREEZES COMBINED
WITH NIGHTTIME FOG IN LIGHT WIND...MOSTLY CLEAR SKY AND HIGH SFC
MOISTURE CONTENT FROM THE RECORD MARCH RAINS...AS WELL AS LACK OF
WESTERLY BL MIXING DURING THE DAY... WARRANTS CAUTION ON YIELDING
POTENTIAL 850 TEMP MAX'S. CONFIDENCE IN MID 80S IN SOUTHERN NH IS
BELOW AVG.

SUNDAY/MONDAY...THINK SUNDAY IS OUR BEST CHC FOR 80S. AVG CONFIDENCE.
MAINTAIN CONSIDERABLE CONTINUITY SUNDAY AND BLENDED PREV 4AM KBOX
FCST WITH NEW 12Z GFS MOS FOR A COOLER MONDAY. BOTTOM LINE...IF IT
HEATS UP BIG TIME EVERYWHERE IN SNE...THINK SUNDAY IS THE DAY. POPS
ON SUNDAY OR MONDAY ARE LOW AND HAD NO PARTICULAR FEEL. EC LOOKS A
LITTLE SLOWER THAN THE GFS.

ESSENTIALLY A NICE STRETCH OF WX IS UPCOMING THU-THROUGH THE WEEKEND.

NEXT WEEK...SOME SIGN THE PATTERN REVERTS TO A STRENGTHENING BLOCK IN
NE CANADA WITH ACTIVE SRN STREAM BUT FOR NOW NOTHING BIG ON THE DISTANT
HORIZON FOR SNE.

&&

.AVIATION /21Z MONDAY THROUGH SATURDAY/...
18Z TAFS...MEDIUM CONFIDENCE. SOME UNCERTAINTY WITH TIMING OF LOWER
CIGS. GRADUAL LOWERING EXPECTED INTO THIS EVENING WITH WIDESPREAD
IFR/LIFR ANTICIPATED 21Z-01Z. EXCEPTION MAY BE ACK FMH HYA WHICH MAY
TAKE UNTIL 00Z FOR CIGS TO LOWER TO IFR...BUT CONFIDENCE WAS NOT
HIGH ENOUGH TO HOLD OFF THAT LONG IN TAFS. IFR/LIFR PERSISTS INTO AT
LEAST TUE MORNING AT ALL TAF SITES...BEFORE IMPROVEMENT TO MVFR
BEGINS AFTER 18Z TUE.

KBOX VWP SHOWING 18055KT WINDS AT 2000 FT AS OF 1730Z. LLWS WILL
PERSIST THROUGH 20Z ACROSS RI AND EASTERN MA ALTHOUGH IT IS DUE TO
SPEED SHEAR AS OPPOSED TO DIRECTIONAL SHEAR. INCREASING E/SE LOW
LEVEL JET SHOULD BRING ANOTHER ROUND OF LLWS TO ACK FMH HYA LATER
TONIGHT AND TUE MORNING.

BOS/LOGAN AIRPORT...HIGH CONFIDENCE. IFR EXPECTED THIS EVENING AS
WINDS SHIFT TO NW. S WINDS HAVE KEPT LOWER CIGS OUT OF TERMINAL AREA
WHICH IS A TYPICAL SCENARIO. SFC WINDS 170-190 SHIFT TO NW AROUND
00Z AND DIMINISH TO LESS THAN 10KT...BUT WIND SHIFT COULD HOLD OFF
UNTIL 03Z.

OUTLOOK...WEDNESDAY THROUGH SATURDAY...

WEDNESDAY...MEDIUM CONFIDENCE. MVFR CONDS TO START WITH IFR POSSIBLE
CAPE COD IN SHOWERS. N GUSTS 20 TO 25 KTS.

THURSDAY THROUGH SATURDAY...HIGH CONFIDENCE. VFR LATE MORNING INTO
EARLY EVENING BUT IFR IN THE VALLEYS AND PARTS OF THE COASTAL PLAIN
COUNTRYSIDE IN FOG EARLY MORNING HOURS.

&&

.MARINE...
SOUTHERLY WINDS TEMPORARILY DIMINISH THIS EVENING BEFORE BECOMING
EASTERLY AND INCREASING LATE TONIGHT INTO TUE AS NEXT LLJ PULSE
LIFTS NWD ACROSS THE WATERS.  LOW LEVEL INVERSION WILL LIMIT GUSTS
BUT WE DO EXPECT UP TO A 6 HR PERIOD OF GALE FORCE GUSTS DEVELOPING
OVER SOUTHERN WATERS BY EARLY TUE THEN MOVING NWD ACROSS NORTHERN
WATERS TUE AFTERNOON.

WINDS DIMINISH TUE NIGHT WITH LIGHT EASTERLY FLOW DEVELOPING.

OUTLOOK...WEDNESDAY THROUGH FRIDAY...

WEDNESDAY...
GALE CENTER WEAKENS AS IT MOVES NEAR THE 40N/70W POSITION. SCA CONDS
IN MANY OF THE WATERS. VSBY MAY BE POOR IN AREAS OF RAIN/DRIZZLE AND
FOG.

THURSDAY AND FRIDAY...
OCEAN LOW DRIFTS SEAWARD WITH HIGH PRES BUILDING IN FROM THE WEST.
LIGHT WINDS EXPECTED HOWEVER NE HAZARDOUS SEAS SWELLS ARE LIKELY TO
PERSIST ESPECIALLY THU.

&&

.HYDROLOGY...
THE LATEST GRAPHICAL FORECASTS CAN BE FOUND AT...
HTTP:/WEATHER.GOV/BOSTON...AND GO TO /RIVERS AND LAKES AHPS/

A SERIOUS FLOOD SITUATION IS SHAPING UP IN SOUTHERN NEW ENGLAND.
RIVER FORECASTS ARE IN COLLABORATION WITH NERFC.

A WIDESPREAD RAINFALL OF 3 TO 6 INCHES IS FORECAST IN SOUTHERN NEW
ENGLAND THROUGH TUESDAY WITH AMOUNTS UP TO 7 INCHES IN RHODE ISLAND
AND PARTS OF CENTRAL/EASTERN MA. WE HAVE HIGH CONFIDENCE THAT THIS
WILL RESULT IN MINOR TO MODERATE FLOODING ALONG SEVERAL RIVERS...WITH
MAJOR OR RECORD FLOODING FORECAST AT A FEW LOCATIONS...

* PAWTUXET RIVER AT CRANSTON RI...RECORD FLOODING IS FORECAST.
FLOODING WILL BE AS SEVERE OR EVEN WORSE THAT WHAT OCCURRED IN MID
MARCH! LATEST FORECAST CREST IS 16.1 FT MIDDAY WED.

* SUDBURY RIVER AT SAXONVILLE MA...RECORD FLOODING IS FORECAST.
FLOODING WILL BE WORSE THAN WHAT OCCURRED IN THE APRIL 1987 FLOODS...
WHEN THE RIVER CRESTED AT 13.5 FT. LATEST FORECAST CREST IS 14.6 FT
BY WED MORNING.

* CHARLES RIVER AT DOVER MA...MAJOR FLOODING IS FORECAST. LATEST
FORECAST CREST IS 8.5 FT MIDDAY WED BUT COULD END UP BEING HIGHER
SINCE THE RIVER IS STILL PROJECTED TO BE RISING AT THAT TIME.

* ASSABET RIVER AT SUDBURY MA...MAJOR FLOODING IS FORECAST. LATEST
FORECAST CREST IS 7.9 FT MIDDAY WED BUT SHOULD END UP BEING HIGHER
SINCE THE RIVER IS STILL PROJECTED TO BE RISING AT THAT TIME.

SIGNIFICANT URBAN AND SMALL STREAM FLOODING IS ALSO EXPECTED. FLOODING
WILL BE AT LEAST AS BAD AS IT WAS IN MID MARCH. THIS IS GOING TO BE
A PROLONGED PERIOD OF URBAN AND SMALL STREAM FLOODING...WHICH SHOULD
LAST WELL INTO TUESDAY MORNING.

INDIVIDUALS WHO HAVE EXPERIENCED FLOODING IN THE PAST MONTH SHOULD
BE TAKING PRECAUTIONS AT THIS TIME AND BE PREPARED FOR A MAJOR FLOOD
EVENT!!! FOLLOW THE INSTRUCTIONS OF LOCAL OFFICIALS AND EVACUATE IF
YOU ARE ASKED TO DO SO!!!

&&

.TIDES/COASTAL FLOODING...
STORM SURGE PEAKED AROUND 1.1 FT AT PVD FOR THE RECENT MORNING TIDE
WHICH KEPT TIDES JUST BELOW FLOOD STAGE. THE ASTRO TIDE FOR THIS
EVENINGS TIDE IS ALMOST 1 FT HIGHER WHICH COMBINED WITH CONTINUED
MODEST SOUTHERLY FLOW SHOULD YIELD WATER LEVELS NEAR OR SLIGHTLY
ABOVE FLOOD STAGE ACROSS THE UPPER PARTS OF NARR BAY...SO COASTAL
FLOOD ADVSY CONTINUES FOR THE EVENING HIGH TIDE.

WE ALSO ISSUED COASTAL FLOOD ADVSY FOR EAST COASTAL MA FOR TUE
MIDDAY HIGH TIDE.  MRPSSE SURGE GUIDANCE INCREASED AROUND 1 FT BUT
WORST CASE SCENARIO IS MINOR COASTAL FLOODING.  ASTRO TIDES ARE HIGH
BUT IT DOES NOT APPEAR THE SEAS WILL BE BUILT UP ENOUGH FOR ANYTHING
MORE THAN MINOR FLOODING.

MINOR SPLASHOVER POSSIBLE NEAR MIDNIGHT HIGH TIDE CYCLE TUE NIGHT.

&&

.CLIMATE...
BOS-BOSTON-PERIOD OF RECORD DATING BACK TO 1872...THROUGH 5 PM
3/29...MARCH 2010 IS THE SECOND WETTEST MARCH ON RECORD WITH 10.82
INCHES. THE RECORD MARCH TOTAL IS 11.00 INCHES SET IN 1953. THERE IS
A HIGH PROBABILITY OF EQUALING OR EXCEEDING THIS 11 INCH VALUE BY 7 PM.

THE FOLLOWING FOR BOSTON ARE MONTHLY RECORDS EXCEEDING 10 INCHES...
17.09 AUG 1955
13.38 MAY 1954
13.20 JUNE 1982
12.48 MAY 2006
11.69 JULY 1921
11.58 JUNE 1998
11.03 NOV 1876
11.00 MARCH 1953
10.94 SEPT 1933
10.93 SEPT 1882
10.82 MARCH 2010

MQE-BLUE HILL OBSERVATORY- PERIOD OF RECORD DATING BACK TO 1885...
HAS ESTABLISHED A MARCH RECORD WITH 14.07 INCHES AS OF 1 PM 3/29...
SURPASSING THE PREVIOUS RECORD OF 13.07 INCHES IN MARCH 2001. ALREADY
THE 4TH WETTEST MONTH ON RECORD AND FROM WHAT WE CAN TELL...ANOTHER
2.5-5 INCHES OF RAIN WILL OCCUR THIS MONTH...PROBABLY MOVING MQE
MARCH TO AT LEAST THE 3RD WETTEST MONTH ON RECORD. NEARLY 6 INCHES
IS NOT OUT OF THE QUESTION THO A 6 INCH STORM TOTAL TO MAKE AN ALL
TIME HISTORIC MONTH /RECENT HISTORY DATING BACK TO 1885/ FOR THIS
EVENT AS VIEWED FROM MODELS OPTIONS NEEDS TO BE CONSIDERED AS 30 PCT
CHC.

WETTEST MONTHS OF RECORD AT MQE ARE
AUGUST 1955  18.78
JUNE 1998    17.32
OCTOBER 2005 14.72
MARCH 2010   14.07
JUNE 1982    13.73

PVD-PROVIDENCE WETTEST MARCH EVER IS 9.42 AT 5PM. TOP MONTH IS 15.38
INCHES IN OCT 2005. LISTING OF TOP 10 WETTEST MONTHS BELOW.

THE FOLLOWING FOR PROVIDENCE ARE THE 10 WETTEST MONTHLY RECORDS
15.38 OCT 2005
12.74 APR 1983
12.24 AUG 1946
11.89 OCT 1962
11.66 JAN 1979
11.12 AUG 1955
11.08 JUN 1982
10.99 SEP 2008
10.88 AUG 1927

ORH AS OF 5 PM IS EIGHTH WETTEST MARCH MARCH RECORD IS 11.13 INCHES -
1936 ORH IS HEADED FOR TOP 3 WETTEST MARCH
#3 7.96 1972
#2 8.59 1953

BDL TENTH WETTEST MARCH IS 5.87 IN 1980...STILL A WAYS TO GO AS OF 5PM
WHERE BDL IS SO FAR AT 4.69.

RER VULNERABLE DAILY RAINS MONDAY 3/29
BDL 1.48 AT 5PM. PLS SEE DAILY RER BDL. PREVIOUS 1.20 1912 POR 1905
ORH 1.46 1984 POR 1892

PVD NEW RECORD...PLS SEE RER BOTH DAILY AND MONTHLY.

BOS 1.85 1984 POR 1872
MQE 2.78 1984 POR 1885

3/29/10 4 PM CALENDAR DAY TOTALS.
BDL 1.48* NEW DAILY RECORD.  RERS UPDATE AS TIME PERMITS.
ORH 1.17
PVD 1.89* DAILY AND MONTHLY RERS UPDATE AS TIME PERMITS.
BOS 0.88

TUESDAY 3/30 RER DAILY RECORDS
BDL 2.28 1951 POR 1905
ORH 1.78 2001 POR 1892
PVD 2.57 2001 POR 1905
BOS 2.53 1953 POR 1872
MQE 2.82 2001 POR 1885

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...NONE.
MA...COASTAL FLOOD ADVISORY FROM 10 AM TO 2 PM EDT TUESDAY FOR
     MAZ007-015-016-019-022-024.
NH...FLOOD WATCH THROUGH TUESDAY AFTERNOON FOR NHZ011-012-015.
RI...COASTAL FLOOD ADVISORY UNTIL 10 PM EDT THIS EVENING FOR RIZ002-
     004-005.
MARINE...GALE WARNING FROM 8 AM TO 5 PM EDT TUESDAY FOR ANZ231>235-237-
     250-251-254>256.
     SMALL CRAFT ADVISORY UNTIL 5 PM EDT TUESDAY FOR ANZ230-236.

&&

SYNOPSIS...KJC/DRAG
NEAR TERM...KJC
SHORT TERM...KJC
LONG TERM...DRAG 530P
AVIATION...KJC/DRAG/JWD 530P
MARINE...KJC/DRAG 530P
HYDROLOGY...
TIDES/COASTAL FLOODING...
CLIMATE...530P
Hazardous weather outlook, Mar 29, 3:55 PM EST, 1 hour 39 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAUNTON MA
455 PM EDT MON MAR 29 2010

NHZ011-012-015-302100-
CHESHIRE NH-EASTERN HILLSBOROUGH NH-
WESTERN AND CENTRAL HILLSBOROUGH NH-
455 PM EDT MON MAR 29 2010

...FLOOD WATCH IN EFFECT THROUGH TUESDAY AFTERNOON...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN NEW HAMPSHIRE.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLOOD WATCH.

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

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLOOD WATCH.

DENSE FOG IS POSSIBLE IN THE VALLEYS DURING THE EARLY MORNING HOURS
OF THURSDAY...FRIDAY AND SATURDAY.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

CTZ002>004-MAZ002>006-008>014-017-018-020-021-023-026-RIZ001-003-
006>008-302100-
HARTFORD CT-TOLLAND CT-WINDHAM CT-WESTERN FRANKLIN MA-
EASTERN FRANKLIN MA-NORTHERN WORCESTER MA-CENTRAL MIDDLESEX MA-
WESTERN ESSEX MA-WESTERN HAMPSHIRE MA-WESTERN HAMPDEN MA-
EASTERN HAMPSHIRE MA-EASTERN HAMPDEN MA-SOUTHERN WORCESTER MA-
WESTERN NORFOLK MA-SOUTHEAST MIDDLESEX MA-NORTHERN BRISTOL MA-
WESTERN PLYMOUTH MA-SOUTHERN BRISTOL MA-SOUTHERN PLYMOUTH MA-
DUKES MA-NORTHERN MIDDLESEX MA-NORTHWEST PROVIDENCE RI-
WESTERN KENT RI-WASHINGTON RI-NEWPORT RI-BLOCK ISLAND RI-
455 PM EDT MON MAR 29 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN
CONNECTICUT...CENTRAL MASSACHUSETTS...EASTERN
MASSACHUSETTS...NORTHEASTERN MASSACHUSETTS...SOUTHEASTERN
MASSACHUSETTS...WESTERN MASSACHUSETTS...NORTHERN RHODE ISLAND AND
SOUTHERN RHODE ISLAND.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

 FLOOD WARNING.

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

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

 FLOOD WARNING.

DENSE FOG IS POSSIBLE DURING THE EARLY MORNING HOURS OF THURSDAY...
FRIDAY AND SATURDAY.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

RIZ002-004-005-302100-
SOUTHEAST PROVIDENCE RI-EASTERN KENT RI-BRISTOL RI-
455 PM EDT MON MAR 29 2010

...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN RHODE ISLAND.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   COASTAL FLOOD ADVISORY.

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

DENSE FOG IS POSSIBLE IN THE VALLEYS DURING THE EARLY MORNING HOURS
OF THURSDAY...FRIDAY AND SATURDAY.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

MAZ007-015-016-019-022-024-302100-
EASTERN ESSEX MA-SUFFOLK MA-EASTERN NORFOLK MA-EASTERN PLYMOUTH MA-
BARNSTABLE MA-NANTUCKET MA-
455 PM EDT MON MAR 29 2010

...COASTAL FLOOD ADVISORY IN EFFECT FROM 10 AM TO 2 PM EDT TUESDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN
MASSACHUSETTS...NORTHEASTERN MASSACHUSETTS AND SOUTHEASTERN
MASSACHUSETTS.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

 FLOOD WARNING.

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

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

 FLOOD WARNING.
 COASTAL FLOOD ADVISORY.

DENSE FOG IS POSSIBLE DURING THE EARLY MORNING HOURS OF THURSDAY...
FRIDAY AND SATURDAY.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

ANZ231>235-237-250-251-254>256-302100-
CAPE COD BAY-NANTUCKET SOUND-VINEYARD SOUND-BUZZARDS BAY-
RHODE ISLAND SOUND-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-
455 PM EDT MON MAR 29 2010

...GALE WARNING IN EFFECT FROM 8 AM TO 5 PM EDT TUESDAY...

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

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

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

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   GALE WARNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ230-236-302100-
BOSTON HARBOR-NARRAGANSETT BAY-
455 PM EDT MON MAR 29 2010

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

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT REQUESTED AT THIS TIME.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

6 flood. Local standard time, as filed.

Flood, Worcester

When
March 29, 5:34 PM EST to March 31, 11:59 PM EST
Where
Worcester County, 0.39 mi NNW of Southbridge to 0.99 mi SSE of Whitinsville
Cause
Heavy Rain
Property damage
$4.0 million
Reported by
Amateur Radio
Coordinates
42.075, -72.033

Three to seven inches of rain fell across portions of Worcester County, resulting in the Blackstone River at Northbridge rising to minor flood. The Nashua River at Clinton also rose above flood stage. Several roads and basements flooded in Leominster, Fitchburg, Lancaster, Milford, Mendon, Blackstone, Northbridge, and Shrewsbury. Reduced speed limits were imposed on the rail line between Framingham and Worcester.

Clinton experienced substantial flooding two weeks prior to this event. The Nashua River at Clinton crested only four tenths of a foot lower than that event. However, because of the recent flooding, many preparations were made in advance of the rainfall. Roughly 10,000 sandbags were made and placed around Clinton with the help of the Massachusetts National Guard. This alleviated some of the damage that likely would have recurred with the three to six inches of rain that fell.

Flood, Middlesex

When
March 29, 7:14 PM EST to March 31, 11:59 PM EST
Where
Middlesex County, 0.03 mi ENE of Farm Hill to 0.76 mi SW of Wilmington
Cause
Heavy Rain
Property damage
$8.8 million
Reported by
Amateur Radio
Coordinates
42.480, -71.100

Four to seven inches of rain fell across Middlesex County resulting in each of the seven gaged mainstem rivers in Middlesex County to rise above flood stage. The Assabet River at Maynard and the Sudbury River at Saxonville both reached major flood with the Sudbury River setting a new flood of record. The Nashua River at East Pepperell, the Shawsheen River at Wilmington, and the Merrimack River at Lowell reached moderate flood.

Several small streams rose above flood stage in Middlesex County, including the Aberjona River at Winchester and the Charles River at Waltham.

Basements flooded in Stoneham and Billerica. Numerous streets were closed due to flooding in Littleton, Concord, Lexington, Holliston, Shirley, Medford, Natick, Tewksbury, Wilmington, Billerica, Arlington, Framingham, Wayland, Waltham and Stoneham, including Route 119 at the Littleton/Ayer town line. The basement of the Bacon Free Library in Natick flooded, but did not sustain any damage to its collection.

Residents on Circle Drive in Framingham were evacuated after the Sudbury River sent at least a foot of water into most of the houses. Wayland's Pelham Island neighborhood (about 63 homes) was cut off by a tributary to the Sudbury River. The town ran a school bus and then a Boston Duck Tours amphibious vehicle as a shuttle between the neighborhood and a downtown parking lot where residents were asked to move their cars. Several apartments on Linden Street (roughly 30 people) in Waltham were evacuated.

In Littleton and Ayer, the five foot diameter culvert that links Spectacle Pond with Gilson Brook collapsed resulting in a build up of water in the pond. It subsequently backed up into a nearby neighborhood. This build up also forced the town of Ayer to shut off its wells by the pond that supply drinking water to most of the town. PanAm Railways halted all freight trains from traveling through the area after the tracks became flooded.

Flood, Norfolk

When
March 29, 9:00 PM EST to March 31, 11:59 PM EST
Where
Norfolk County, 0.52 mi NNW of Bellingham to 0.62 mi S of Wampum Corner
Cause
Heavy Rain
Property damage
$8.3 million
Reported by
Amateur Radio
Coordinates
42.087, -71.475

Four to six inches of rain fell across Norfolk County, resulting in the Charles River at Dover and the Neponset River at Norwood rising to major flood.

Several small streams rose above flood stage across Norfolk County, including the Charles River at Medway which set a record, the Monatiquot River at East Braintree, and the Old Swamp River at South Weymouth.

Many basements were flooded in Norfolk and Westwood. Numerous streets were closed due to flooding in Holbrook, Medfield, Bellingham, Franklin, Westwood, Medway, Norfolk, Walpole, Quincy, Weymouth, and Millis.

In Bellingham, one family was evacuated from a house on Pine Grove Avenue. The Primavera School on Harpin Street also had some flooding.

Flood, Bristol

When
March 29, 9:54 PM EST to March 31, 11:59 PM EST
Where
Bristol County, 2.59 mi W of North Attleboro to 1.87 mi NW of Acoaxet
Cause
Heavy Rain
Injuries
2 direct, 0 indirect
Property damage
$24 million
Reported by
Amateur Radio
Coordinates
41.981, -71.380

Four to eight inches of rain fell across Bristol County resulting in several small streams rising above flood stage, including the Mill River in Taunton, the Canoe River at Norton, the Wading River at Norton, and the Segregansett River at Dighton, all of which set records.

Basements flooded in Taunton, North Attleboro, Attleboro, Norton, Mansfield, and Acushnet. Numerous streets were closed due to flooding in Taunton, Fall River, Dartmouth, Norton, Dighton, Raynham, Somerset, North Attleboro, Attleboro, Freetown, Westport, Berkley, Mansfield, Rehoboth, and Swansea, including Route 6 in Westport, Interstate 195 at Exit 3 in Swansea, Route 24 in Dartmouth, and Route 140 in Freetown (exit 8). The North Attleboro Town Hall sustained $350,000 worth of damage from flooding and Richards Memorial Library was closed for several weeks after the basement was flooded with water and sewage. A pond at Capron Park Zoo in Attleboro overflowed, threatening zoo buildings. It was able to be pumped out, keeping water out of most of the buildings. One building was flooded with two feet of water, damaging boxes of gift shop items and supplies.

Route 44 on the Taunton/Raynham line was closed for the second time in a month due to flooding from the Taunton River. An amphibious vehicle from the Boston Duck Tours was called into service to ferry residents from isolated neighborhoods to nearby supermarkets and pharmacies.

One bridge (Wheeler Street) was destroyed and three others damaged in Rehoboth when the Palmer River flooded. Portions of two of the damaged bridges (Danforth and Elm Streets) were undermined and washed away and the Summer Street bridge sustained structural damage. Two people were rescued when they fell into the Palmer River while trying to rescue their dog. They were transported to Rhode Island Hospital.

Sixteen year round residents at the Canoe River Camp Ground in Mansfield were evacuated. Three apartment buildings on Riverbank Road in Attleboro were completely surrounded by water overflowing from the Ten Mile River. The Seven Mile River in South Attleboro overflowed its banks, flooding Pitas Avenue, isolating twenty homes. Six structures in North Attleboro were evacuated because of flooding.

In hard-hit Fall River: Numerous roads were flooded, including Columbia Street and Mount Hope Avenue. Storm water overwhelmed storm drains, blowing out of the manholes with such force that it ripped up pavement, gravel, and utilities. Twenty nine homes lost power and gas service when the utilities were ripped up. Bricks from sidewalks along Columbia Street floated down Canal and Columbia Streets, collecting in piles on Broadway and Anawan Street. Doran Elementary School was flooded and the sewage treatment plant became overwhelmed with flood waters. A vehicle became stuck in floodwaters, trapping the occupants. Railroad tracks were under water at Interstate 195 and at Route 6. The southbound lanes of Route 24 were closed from President Avenue to Route 195. A 25 foot wide sinkhole developed on Jackson Street. At least 300 people were evacuated from their homes. The mayor declared a state of emergency.

In Freetown: 85 school-children were taken to a shelter after flooding made it impossible for buses to take them home. The Assonet Bay Shores neighborhood (home to about 1000 people) was cutoff to regular traffic by floodwaters and the collapse of a Narrows Road/Causeway Road bridge. Eleven students at the Crystal Springs School (a learning center for children and adults with learning disabilities) were stuck at the school for an evening after the bridge collapsed. They were able to be transported back to the main part of the city when two mountain rescue vehicles owned by the state police were dispatched. The vehicles remained in place for several days to transport residents between the neighborhood and the rest of the city. A bridge 20 yards downstream from the Forge Pond Dam crumbled, leaving a four foot gap in Forge Road. Fifteen households in Assonet Village were evacuated as Forge Pond continued to rise. Schools were closed early Tuesday, March 30 and for the day Wednesday, March 31 due to flooding.

There were three minor house fires in Mansfield that were the result of floodwaters reaching burners and electrical panels in basements.

Flood, Plymouth

When
March 29, 11:46 PM EST to March 31, 11:59 PM EST
Where
Plymouth County, 0.71 mi SSE of Stanley to 0.35 mi ENE of Middleboro
Cause
Heavy Rain
Property damage
$8.1 million
Reported by
Amateur Radio
Coordinates
41.990, -70.975

Three to eight inches of rain fell across Plymouth County resulting in several small streams rising above flood stage, including the Taunton River at Bridgewater which set a record, the Indian Head River at Hanover, and the Jones River at Kingston.

Several ponds in Lakeville rose out of their banks. At least 35 families were evacuated because of the pond flooding. Schools in Lakeville closed early Tuesday, March 30 and closed for the day Wednesday, March 31 because of the flooding. Two buildings in the Ashley Place condominium complex in Middleborough were evacuated due to flooding. A day care center on Route 28 was also evacuated. A handful of people were evacuated from a multi-family dwelling on Ames Street in Brockton.

Many streets flooded (and most were eventually closed) in Wareham, Mattapoisett, Scituate, Bridgewater, Brockton, East Bridgewater, Middleborough, Kingston, and Lakeville, including Route 105 in Middleborough where it passes under Interstate 495 at exit 4. This intersection was eventually closed. Portions of Route 44 in Middleborough were closed due to flooding. Route 18 in Whitman was closed between Routes 27 and 14. A few basements flooded in Marion and some in Norwell were flooded with several feet of water. West Bridgewater High Schol was closed early Tuesday, March 30 due to flooding that threatened the electrical system at the school.

Several sewage treatment plants flooded resulting in raw sewage being discharged into rivers and other bodies of water.

Flood, Essex

When
March 30, 11:45 AM EST to March 31, 11:59 PM EST
Where
Essex County, 0.5 mi E of Newbury to 0.7 mi NNW of Salisbury
Cause
Heavy Rain
Injuries
2 direct, 13 indirect
Property damage
$3.3 million
Reported by
Amateur Radio
Coordinates
42.801, -70.990

Three to seven inches of rain fell across Essex County resulting in several rivers going into minor flood, including the Spicket River at Methuen and the Merrimack River at Lawrence and at Haverhill. In addition, several small streams rose above flood stage across Essex County, including the Parker River at Byfield and the Ipswich River at Ipswich and South Middleton.

Several streets were closed due to flooding in Peabody, Methuen, Andover, Danvers, Saugus, Gloucester, and Topsfield. Many basements were also flooded. The Mayor of Gloucester reported water pouring in the windows of the police station, as well as water coming into City Hall, some of the schools, and the Rose Baker Senior Center. Minor flooding occurred at the Danvers Electric Division and the Peabody Institute Library.

Two people were injured when a 28 year old woman's car became stranded in a deep puddle on the shoulder of Interstate 95. A Massachusetts state trooper rescued her from her car, cutting his arm on broken glass from the window. Thirteen people in Peabody were hospitalized with carbon monoxide poisoning after an unvented, gasoline powered pump was set up in a basement, emitting noxious fumes to the rest of the building.

What these are

Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Massachusetts in 2010Every state in 2010This day in weather historyWarnings in Massachusetts, March 2010

Sources

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: 220237, 220239, 220242, 220247, 220249, 220238.