Alert archive / Massachusetts / River Flood Warnings in 2023

River Flood Warning 70, NWS Boston/Norton, MA

December 19, 2023Middlesex County, Massachusetts

NWS Boston/Norton, MA issued this river flood warning at Dec 19, 2023, 4:53 AM EST for Middlesex County, Massachusetts. It took effect at Dec 19, 2023, 7:00 AM EST. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Dec 19, 2023, 4:53 AM EST (09:53 UTC)
In effect from
Dec 19, 2023, 7:00 AM EST
Expired
Dec 19, 2023, 1:00 PM EST
In force
6 hr
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Flood severity
Minor

County Middlesex County, MA

The radar

The Boston radar (KBOX), 88 km from the middle of the area, began a volume at 09:54 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.

The river

Written for the forecast point Squannacook River at West Groton (WGTM3). The gauge peaked at 6.83 ft at Dec 19, 2023, 4:00 AM EST.

actionminormoderate246812/1912/20
Action stage
6 ft
Minor stage
7 ft
Moderate stage
8.5 ft
Major stage
9.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01096000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

087 
WGUS41 KBOX 190953
FLWBOX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Boston/Norton MA
453 AM EST Tue Dec 19 2023

...The National Weather Service in Boston/Norton MA has issued a 
Flood Warning for the following rivers in Massachusetts...

  Squannacook River At West Groton affecting Middlesex County.



For the Squannacook River...including West Groton...Minor flooding 
is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Additional information is available at www.weather.gov.

The next statement will be issued this afternoon at 100 PM EST.

&&

MAC017-191800-
/O.NEW.KBOX.FL.W.0070.231219T1200Z-231219T1800Z/
/WGTM3.1.ER.231219T1200Z.231219T1200Z.231219T1200Z.NO/
453 AM EST Tue Dec 19 2023

...FLOOD WARNING IN EFFECT UNTIL THIS AFTERNOON...

* WHAT...Minor flooding is forecast.

* WHERE...Squannacook River at West Groton.

* WHEN...Until this afternoon.

* IMPACTS...At 7.5 feet, Minor flooding affects the lowest lying 
  sections of Townsend, including the farmland along Turnpike and 
  Barker Hill roads.

* ADDITIONAL DETAILS...
  - At 4:00 AM EST Tuesday the stage was 6.8 feet.
  - Bankfull stage is 7.0 feet.
  - Forecast...The river is expected to rise to a crest of 7.0
    feet this morning.
  - Flood stage is 7.0 feet.
  - Flood History...This crest compares to a previous crest of
    7.0 feet on 09/12/1954.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4267 7177 4271 7169 4260 7157 4255 7161


$$

HF
1 follow-up statement
110 
WGUS81 KBOX 191437
FLSBOX

Flood Statement
National Weather Service Boston/Norton MA
937 AM EST Tue Dec 19 2023

...The Flood Warning is extended for the following rivers in 
Massachusetts...Rhode Island...Connecticut...

  Sudbury River At Saxonville affecting Middlesex County.

  Shawsheen River At Andover affecting Essex County.

  Blackstone River At Woonsocket affecting Providence and Worcester 
  Counties.

  Pawcatuck River At Westerly affecting Washington and New London 
  Counties.

  Wood River At Hope Valley affecting Washington County.

...The Flood Warning continues for the following rivers in 
Massachusetts...Connecticut...New Hampshire...Rhode Island...

  Connecticut River At Montague affecting Hampshire and Franklin 
  Counties.

  Connecticut River At Hartford affecting Middlesex and Hartford 
  Counties.

  Connecticut River At Thompsonville affecting Hartford and Hampden 
  Counties.

  Connecticut River At Northampton affecting Hampshire and Hampden 
  Counties.

  Connecticut River At Middle Haddam affecting Middlesex County.

  Farmington River At Simsbury affecting Hartford County.

  Merrimack River At Lowell affecting Middlesex and Essex Counties.

  Merrimack River AT Lawrence affecting Essex County.

  Assabet River At Maynard affecting Middlesex and Worcester 
  Counties.

  Nashua River At East Pepperell affecting Middlesex, Worcester and 
  Hillsborough Counties.

  Spicket River Near Methuen affecting Rockingham and Essex 
  Counties.

  Shawsheen River Near Wilmington affecting Middlesex and Essex 
  Counties.

  Charles River At Dover affecting Norfolk and Middlesex Counties.

  Neponset River At Norwood affecting Suffolk and Norfolk Counties.

  Pawtuxet River At Cranston affecting Kent and Providence Counties.

...The Flood Warning is cancelled for the following rivers in 
Massachusetts...

  Squannacook River At West Groton affecting Middlesex County.



For the Connecticut River...including Montague, Northampton, Holyoke 
Dam, Holyoke, Springfield, Thompsonville, Hartford, Middle Haddam...
Moderate flooding is forecast.
For the Farmington River...including Unionville, Simsbury, 
Tariffville...Minor flooding is forecast.
For the Merrimack River...including Lowell, Lawrence, Haverhill...
Minor flooding is forecast.
For the Sudbury River...including Saxonville...Minor flooding is 
forecast.
For the Shawsheen River...including Wilmington, Andover...Minor 
flooding is forecast.
For the Blackstone River...including Woonsocket...Minor flooding is 
forecast.
For the Charles River...including Dover...Minor flooding is forecast.
For the Neponset River...including Norwood...Minor flooding is 
forecast.
For the Pawtuxet River...including Scituate Reservoir, Cranston...
Major flooding is forecast.
For the Pawcatuck River...including Wood River Junction, Westerly...
Minor flooding is forecast.
For the Wood River...including Hope Valley...Moderate flooding is 
forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

Additional information is available at www.weather.gov.

The next statement will be issued this morning at 1045 AM EST.

&&

MAC017-191545-
/O.CAN.KBOX.FL.W.0070.000000T0000Z-231219T1437Z/
/WGTM3.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Squannacook River At West Groton.

* ADDITIONAL DETAILS...
  - At 9:00 AM EST Tuesday the stage was 6.5 feet.
  - Bankfull stage is 7.0 feet.
  - Forecast...The river is expected to fall to 3.8 feet early
    Friday morning.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4267 7177 4271 7169 4260 7157 4255 7161


$$

MAC027-RIC007-200245-
/O.EXT.KBOX.FL.W.0054.000000T0000Z-231220T1900Z/
/WOOR1.2.ER.231218T2007Z.231219T1015Z.231220T1300Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING NOW IN EFFECT UNTIL EARLY TOMORROW AFTERNOON...

* WHAT...Moderate flooding is occurring and minor flooding is 
  forecast.

* WHERE...Blackstone River at Woonsocket.

* WHEN...Until early tomorrow afternoon.

* IMPACTS...At 13.0 feet, Flooding impacts lower lying sections of 
  Woonsocket and Cumberland. Significant flooding occurs within the 
  lower level of the River Island Condominiums in Woonsocket. 
  Businesses along the river will have several feet of water into 
  their parking areas, including the parking lot for the Cumberland 
  school district buses. Vehicles should be moved from these areas.

* ADDITIONAL DETAILS...
  - At 8:30 AM EST Tuesday the stage was 13.0 feet.
  - Bankfull stage is 9.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:30 AM EST Tuesday was 13.4 feet.
  - Forecast...The river is expected to fall below flood stage
    tomorrow morning and continue falling to 6.2 feet Thursday
    evening.
  - Flood stage is 9.0 feet.
  - Flood History...This crest compares to a previous crest of
    13.9 feet on 03/13/1936.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4201 7157 4202 7149 4197 7142 4186 7136
      4185 7141


$$

RIC009-200245-
/O.EXT.KBOX.FL.W.0051.000000T0000Z-231221T0800Z/
/HOPR1.2.ER.231218T1740Z.231219T1200Z.231221T0200Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING NOW IN EFFECT UNTIL EARLY THURSDAY MORNING...

* WHAT...Moderate flooding is occurring and moderate flooding is 
  forecast.

* WHERE...Wood River at Hope Valley.

* WHEN...Until early Thursday morning.

* IMPACTS...At 8.0 feet, In Richmond, the Wood River blocks sections 
  of Tall Timbers Drive, Leroy Drive, Wood River Circle and Wood 
  River Drive. Dow field off of main Street in Hopkinton is 
  substantially flooded.  Also, floodwaters begin to reach the 
  bottom edge of the Skunk Hill Road Bridge on the Richmond and 
  Hopkinton Town Line.

* ADDITIONAL DETAILS...
  - At 8:15 AM EST Tuesday the stage was 8.0 feet.
  - Bankfull stage is 5.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:15 AM EST Tuesday was 8.0 feet.
  - Forecast...The river is expected to rise to a crest of 8.0
    feet this afternoon. It will then fall below flood stage late
    tomorrow evening.
  - Flood stage is 5.0 feet.
  - Flood History...This crest compares to a previous crest of
    8.0 feet on 10/15/2005.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4143 7176 4160 7174 4160 7163 4144 7164


$$

CTC011-RIC009-200245-
/O.EXT.KBOX.FL.W.0050.000000T0000Z-231221T0300Z/
/WSTR1.1.ER.231218T1554Z.231219T1245Z.231220T2100Z.UU/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING NOW IN EFFECT UNTIL LATE TOMORROW EVENING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Pawcatuck River at Westerly.

* WHEN...Until late tomorrow evening.

* IMPACTS...At 8.0 feet, Floodwaters approach lowest lying homes 
  along Hiscox Road in Westerly. Along Route 3, flooding occurs at 
  some homes in French Village in Hopkinton.

* ADDITIONAL DETAILS...
  - At 9:00 AM EST Tuesday the stage was 8.4 feet.
  - Bankfull stage is 7.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 9:00 AM EST Tuesday was 8.4 feet.
  - Forecast...The river will fall to 7.9 feet late this
    afternoon. It will then rise to 8.0 feet late this evening.
    It will fall to 7.2 feet tomorrow morning. It will then rise
    to 7.4 feet late tomorrow morning. It will fall below flood
    stage tomorrow afternoon.
  - Flood stage is 7.0 feet.
  - Flood History...This crest compares to a previous crest of
    8.4 feet on 08/31/1985.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4134 7189 4144 7188 4146 7177 4135 7174
      4131 7185


$$

MAC017-200245-
/O.EXT.KBOX.FL.W.0049.000000T0000Z-000000T0000Z/
/SAXM3.1.ER.231218T1702Z.231219T1215Z.000000T0000Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING NOW IN EFFECT UNTIL FURTHER NOTICE...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Sudbury River at Saxonville.

* WHEN...Until further notice.

* IMPACTS...At 11.0 feet, Flooding will affect portions of Shore and 
  Pelham Island Roads as well as River Road in Wayland. Flooding 
  will also begin to impact Route 20 at Route 27. Other low lying 
  areas along the river will experience flooding.

* ADDITIONAL DETAILS...
  - At 8:15 AM EST Tuesday the stage was 11.3 feet.
  - Bankfull stage is 10.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:15 AM EST Tuesday was 11.3 feet.
  - Forecast...The river is expected to fall to 10.3 feet early
    Friday morning.
  - Flood stage is 10.0 feet.
  - Flood History...This crest compares to a previous crest of
    11.1 feet on 10/21/1996.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4227 7140 4230 7145 4248 7139 4245 7129


$$

MAC009-200245-
/O.EXT.KBOX.FL.W.0064.231219T1726Z-000000T0000Z/
/ANDM3.1.ER.231219T1726Z.231221T0000Z.000000T0000Z.UU/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING NOW IN EFFECT FROM THIS AFTERNOON UNTIL FURTHER 
NOTICE...

* WHAT...Minor flooding is forecast.

* WHERE...Shawsheen River at Andover.

* WHEN...From this afternoon until further notice.

* IMPACTS...At 31.0 feet, Floodwaters inundate the lowest lying 
  parking lots along Route 114 adjacent to the Shawsheen River. This 
  includes drainage fronting the North Andover Mall along Route 114. 
  Floodwaters encroach on Route 114 hotel building in Lawrence, 
  adjacent to the river. Floodwaters encroach on lowest lying 
  properties along Glenwood Street in North Andover.


* ADDITIONAL DETAILS...
  - At 9:15 AM EST Tuesday the stage was 28.8 feet.
  - Bankfull stage is 29.0 feet.
  - Forecast...The river is expected to rise above flood stage
    this afternoon and continue rising to a crest of 30.9 feet
    tomorrow evening.
  - Flood stage is 29.0 feet.
  - Flood History...This crest compares to a previous crest of
    30.6 feet on 04/01/2014.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4264 7121 4270 7117 4271 7109 4261 7116


$$

MAC009-017-200245-
/O.CON.KBOX.FL.W.0067.000000T0000Z-231221T0900Z/
/LOWM3.1.ER.231219T1256Z.231220T0000Z.231221T0300Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL EARLY THURSDAY MORNING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Merrimack River at Lowell.

* WHEN...Until early Thursday morning.

* IMPACTS...At 52.0 feet, Lowland flooding is likely along the 
  Merrimack River. Most of the impact will be felt by businesses and 
  mills where basement flooding is likely.

* ADDITIONAL DETAILS...
  - At 8:30 AM EST Tuesday the stage was 52.1 feet.
  - Bankfull stage is 52.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:30 AM EST Tuesday was 52.1 feet.
  - Forecast...The river is expected to rise to a crest of 52.7
    feet this evening. It will then fall below flood stage late
    tomorrow evening.
  - Flood stage is 52.0 feet.
  - Flood History...This crest compares to a previous crest of
    52.7 feet on 06/18/1998.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4270 7148 4270 7140 4268 7133 4271 7125
      4263 7122 4260 7140


$$

MAC009-200245-
/O.CON.KBOX.FL.W.0066.000000T0000Z-231221T1630Z/
/LAWM3.1.ER.231219T1508Z.231220T0600Z.231221T1030Z.UU/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL LATE THURSDAY MORNING...

* WHAT...Minor flooding is forecast.

* WHERE...Merrimack River at Lawrence.

* WHEN...Until late Thursday morning.

* IMPACTS...At 26.0 feet, Minor lowland flooding is expected along 
  the Merrimack River near Lawrence.  This will affect some 
  businesses along the river susceptible to basement flooding. In 
  addition, backwater flooding may occur in the lower Shawsheen 
  River area in Lawrence and North Andover. First impacts include 
  very lowest lying parking lots for businesses on Route 114 
  adjacent to the river.

* ADDITIONAL DETAILS...
  - At 8:30 AM EST Tuesday the stage was 23.5 feet.
  - Bankfull stage is 24.0 feet.
  - Forecast...The river is expected to rise above flood stage
    late this morning to a crest of 25.5 feet just after midnight
    tonight. It will then fall below flood stage early Thursday
    morning.
  - Flood stage is 24.0 feet.
  - Flood History...No available flood history.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4263 7122 4271 7125 4274 7118 4278 7117
      4272 7109 4268 7113


$$

MAC009-017-200245-
/O.CON.KBOX.FL.W.0063.000000T0000Z-231221T0600Z/
/WLMM3.1.ER.231219T0836Z.231220T0000Z.231221T0000Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL EARLY THURSDAY MORNING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Shawsheen River near Wilmington.

* WHEN...Until early Thursday morning.

* IMPACTS...At 8.0 feet, Flooding will affect low lying 
  neighborhoods from Wilmington through Tewksbury to Lawrence. This 
  includes a portion of Route 114 in Lawrence. Areas subject to 
  basement flooding should move valuables to higher ground.

* ADDITIONAL DETAILS...
  - At 8:30 AM EST Tuesday the stage was 7.4 feet.
  - Bankfull stage is 7.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:30 AM EST Tuesday was 7.4 feet.
  - Forecast...The river is expected to rise to a crest of 7.8
    feet this evening. It will then fall below flood stage
    tomorrow evening.
  - Flood stage is 7.0 feet.
  - Flood History...This crest compares to a previous crest of
    7.8 feet on 04/18/2018.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4254 7128 4264 7121 4261 7116 4252 7122


$$

MAC017-027-200245-
/O.CON.KBOX.FL.W.0062.000000T0000Z-231222T0800Z/
/MAYM3.1.ER.231219T0103Z.231220T0600Z.231222T0200Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL EARLY FRIDAY MORNING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Assabet River at Maynard.

* WHEN...Until early Friday morning.

* IMPACTS...At 6.0 feet, Flooding is likely in low lying sections 
  along the river including portions of Maynard, Hudson and Concord. 
  Water may approach homes along the river and may force several 
  localized road closures.

* ADDITIONAL DETAILS...
  - At 8:15 AM EST Tuesday the stage was 5.8 feet.
  - Bankfull stage is 5.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:15 AM EST Tuesday was 5.8 feet.
  - Forecast...The river is expected to rise to a crest of 5.9
    feet just after midnight tonight. It will then fall below
    flood stage late Thursday evening.
  - Flood stage is 5.0 feet.
  - Flood History...This crest compares to a previous crest of
    6.0 feet on 04/03/2004.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4236 7159 4240 7162 4250 7136 4241 7135


$$

MAC011-015-200245-
/O.CON.KBOX.FL.W.0061.000000T0000Z-231220T1648Z/
/MNTM3.1.ER.231218T2211Z.231219T0345Z.231220T1048Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL LATE TOMORROW MORNING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Connecticut River at Montague.

* WHEN...Until late tomorrow morning.

* IMPACTS...At 29.0 feet, Flooding of low lying areas is expected 
  primarily from Montague downstream through Sunderland and Whately.

* ADDITIONAL DETAILS...
  - At 8:30 AM EST Tuesday the stage was 29.1 feet.
  - Bankfull stage is 28.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:30 AM EST Tuesday was 29.9 feet.
  - Forecast...The river is expected to fall below flood stage
    late tonight and continue falling to 23.7 feet early Friday
    morning.
  - Flood stage is 28.0 feet.
  - Flood History...This crest compares to a previous crest of
    29.1 feet on 10/30/2003.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4273 7261 4273 7240 4243 7246 4242 7270


$$

CTC003-007-200245-
/O.CON.KBOX.FL.W.0060.000000T0000Z-000000T0000Z/
/HFDC3.1.ER.231219T0722Z.231220T0700Z.000000T0000Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Connecticut River at Hartford.

* WHEN...Until further notice.

* IMPACTS...At 22.0 feet, Flooding affects some residential areas 
  below Hartford through Rocky Hill, including some roadways. 
  Upstream of Hartford, flooding is likely to affect Windsor Locks, 
  East Windsor and Windsor. Should localized evacuations be 
  necessary, act quickly. Further downstream flooding will likely 
  result in the evacuation of low lying area along River Road in 
  Cromwell and Meadow Road in Portland. Flooding increases from 
  Middletown and Portland to the river mouth at Old Saybrook.

* ADDITIONAL DETAILS...
  - At 8:31 AM EST Tuesday the stage was 18.2 feet.
  - Bankfull stage is 16.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:31 AM EST Tuesday was 18.2 feet.
  - Forecast...The river is expected to rise to a crest of 22.0
    feet just after midnight tonight.
  - Flood stage is 16.0 feet.
  - Flood History...This crest compares to a previous crest of
    22.0 feet on 04/13/1887.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4163 7270 4180 7273 4180 7259 4164 7258
      4163 7263 4164 7263


$$

CTC003-MAC013-200245-
/O.CON.KBOX.FL.W.0059.000000T0000Z-231221T1600Z/
/TMVC3.1.ER.231219T0358Z.231220T0000Z.231221T1000Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL LATE THURSDAY MORNING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Connecticut River at Thompsonville.

* WHEN...Until late Thursday morning.

* IMPACTS...At 17.0 feet, Flooding will become more widespread along 
  the Connecticut River from the Massachusetts towns of Agawam and 
  Longmeadow, through the northern Connecticut towns of Suffield and 
  Enfield.

* ADDITIONAL DETAILS...
  - At 8:30 AM EST Tuesday the stage was 16.3 feet.
  - Bankfull stage is 5.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:30 AM EST Tuesday was 16.4 feet.
  - Forecast...The river is expected to rise to a crest of 16.5
    feet this evening. It will then fall below flood stage early
    Thursday morning.
  - Flood stage is 15.0 feet.
  - Flood History...This crest compares to a previous crest of
    16.6 feet on 05/06/1972.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4180 7273 4204 7270 4203 7261 4204 7251
      4180 7259


$$

CTC003-200245-
/O.CON.KBOX.FL.W.0058.000000T0000Z-231220T2200Z/
/SIMC3.1.ER.231219T0315Z.231219T1800Z.231220T1600Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL TOMORROW AFTERNOON...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Farmington River at Simsbury.

* WHEN...Until tomorrow afternoon.

* IMPACTS...At 13.0 feet, Flooding affects Old Farms and Tolliston 
  Roads in Avon, Meadow Road in Farmington, and Nod, Riverside, and 
  Terrys Plain Roads in Simsbury. Route 315 in Simsbury is also 
  impacted. Flooding spreads into Plantation Country Club and 
  adjoining Town Farm Road in Simsbury. Also, flooding will approach 
  the Paine Boathouse.

* ADDITIONAL DETAILS...
  - At 8:30 AM EST Tuesday the stage was 13.4 feet.
  - Bankfull stage is 12.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:30 AM EST Tuesday was 13.4 feet.
  - Forecast...The river is expected to rise to a crest of 13.5
    feet this afternoon. It will then fall below flood stage late
    tomorrow morning.
  - Flood stage is 12.0 feet.
  - Flood History...This crest compares to a previous crest of
    13.7 feet on 01/29/1996.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4175 7279 4178 7286 4190 7283 4187 7273


$$

MAC013-015-200245-
/O.CON.KBOX.FL.W.0057.000000T0000Z-231221T0600Z/
/NHMM3.1.ER.231219T0318Z.231220T0000Z.231221T0000Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL EARLY THURSDAY MORNING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Connecticut River at Northampton.

* WHEN...Until early Thursday morning.

* IMPACTS...At 114.0 feet, Flooding affects the Oxbow in 
  Northampton, including Riverside Homes on Island Road. Flooding 
  also spreads across parts of Hadley. In Hatfield, back water from 
  the Connecticut River will push the Mill River over its banks 
  flooding parts of Valley Street and surrounding areas.

* ADDITIONAL DETAILS...
  - At 9:00 AM EST Tuesday the stage was 113.9 feet.
  - Bankfull stage is 112.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 9:00 AM EST Tuesday was 113.9 feet.
  - Forecast...The river is expected to rise to a crest of 114.1
    feet this evening. It will then fall below flood stage
    tomorrow evening.
  - Flood stage is 112.0 feet.
  - Flood History...This crest compares to a previous crest of
    114.1 feet on 04/02/1962.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4228 7270 4242 7270 4243 7246 4227 7252


$$

MAC021-025-200000-
/O.CON.KBOX.FL.W.0056.000000T0000Z-231220T0000Z/
/NRWM3.1.ER.231219T0405Z.231219T1215Z.231219T1800Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL THIS EVENING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Neponset River at Norwood.

* WHEN...Until this evening.

* IMPACTS...At 9.0 feet, Minor lowland flooding occurs along the 
  Neponset River in Norwood.

* ADDITIONAL DETAILS...
  - At 9:00 AM EST Tuesday the stage was 9.0 feet.
  - Bankfull stage is 9.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 9:00 AM EST Tuesday was 9.1 feet.
  - Forecast...The river is expected to fall below flood stage
    this afternoon and continue falling to 7.6 feet early Friday
    morning.
  - Flood stage is 9.0 feet.
  - Flood History...This crest compares to a previous crest of
    8.9 feet on 12/27/1969.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4212 7122 4214 7127 4228 7115 4224 7109


$$

CTC007-200245-
/O.CON.KBOX.FL.W.0055.000000T0000Z-000000T0000Z/
/MHDC3.2.ER.231218T2122Z.231221T0100Z.000000T0000Z.UU/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

* WHAT...Minor flooding is occurring and moderate flooding is 
  forecast.

* WHERE...Connecticut River at Middle Haddam.

* WHEN...Until further notice.

* IMPACTS...At 10.5 feet, Flooding continues to overspread sections 
  of Portland and Middletown, as well as downstream towns including 
  Chester and Essex. Some immediate river roads will be impassable. 
  In Cromwell this usually impacts portions of River Road. In Rocky 
  Hill, portions of Meadow Road will become impassable.

* ADDITIONAL DETAILS...
  - At 8:55 AM EST Tuesday the stage was 7.6 feet.
  - Bankfull stage is 7.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:55 AM EST Tuesday was 7.6 feet.
  - Forecast...The river will rise to 10.7 feet early Thursday
    morning. It will then fall early Thursday morning. It will
    rise to 10.7 feet late Thursday morning. It will then fall
    again but remain above flood stage.
  - Flood stage is 7.0 feet.
  - Flood History...This crest compares to a previous crest of
    10.4 feet on 07/13/2023.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4164 7269 4164 7258 4129 7225 4126 7239
      4141 7251 4156 7270


$$

MAC017-021-200245-
/O.CON.KBOX.FL.W.0053.000000T0000Z-000000T0000Z/
/DOVM3.1.ER.231218T1715Z.231222T0000Z.000000T0000Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Charles River at Dover.

* WHEN...Until further notice.

* IMPACTS...At 6.5 feet, Flooding affects homes along River Road in 
  South Natick. Flood waters also affect part of Route 109 at the 
  Medfield and Millis town line. Flooding will continue to increase 
  in Needham along Fisher Street.

* ADDITIONAL DETAILS...
  - At 8:45 AM EST Tuesday the stage was 5.7 feet.
  - Bankfull stage is 5.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:45 AM EST Tuesday was 5.9 feet.
  - Forecast...The river is expected to rise to 6.6 feet Thursday
    evening. Additional rises are possible thereafter.
  - Flood stage is 5.0 feet.
  - Flood History...This crest compares to a previous crest of
    6.5 feet on 06/11/2006.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4210 7138 4216 7145 4235 7126 4226 7116


$$

RIC003-007-200245-
/O.CON.KBOX.FL.W.0044.000000T0000Z-000000T0000Z/
/CRAR1.3.ER.231218T1438Z.231219T1345Z.000000T0000Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

* WHAT...Major flooding is occurring and major flooding is forecast.

* WHERE...Pawtuxet River at Cranston.

* WHEN...Until further notice.

* IMPACTS...At 14.5 feet, Evacuations are likely near the Pawtuxet 
  river in Warwick and Cranston. Both homes and businesses will be 
  impacted from this flood event. Businesses and homes will be 
  impacted on streets including but not limited to the following, in 
  Warwick, Pioneer Avenue, Bellows Street, Venturi Avenue and River 
  Street. In Cranston, Wellington Avenue and Avery Road. In West 
  Warwick, Daisy Street, the lower ends of Canna, Begonia and Aster 
  Streets, and portions of Providence Street to Route 2.

* ADDITIONAL DETAILS...
  - At 8:45 AM EST Tuesday the stage was 14.7 feet.
  - Bankfull stage is 9.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 8:45 AM EST Tuesday was 14.7 feet.
  - Forecast...The river is expected to fall to 9.0 feet early
    Friday morning.
  - Flood stage is 9.0 feet.
  - Flood History...This crest compares to a previous crest of
    14.5 feet on 06/07/1982.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4178 7156 4180 7139 4172 7137 4170 7155


$$

MAC017-027-NHC011-200245-
/O.CON.KBOX.FL.W.0065.231219T1840Z-231222T0336Z/
/DNSM3.1.ER.231219T1840Z.231220T1200Z.231221T2136Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT FROM THIS AFTERNOON TO LATE 
THURSDAY EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Nashua River at East Pepperell.

* WHEN...From this afternoon to late Thursday evening.

* IMPACTS...At 10.0 feet, Minor lowland flooding is likely along the 
  river from East Pepperell downstream through Hollis. Flooding will 
  impact some low lying businesses along Route 119 in Pepperell in 
  the vicinity of Route 111.

* ADDITIONAL DETAILS...
  - At 8:30 AM EST Tuesday the stage was 7.5 feet.
  - Bankfull stage is 8.0 feet.
  - Forecast...The river is expected to rise above flood stage
    this afternoon to a crest of 9.7 feet tomorrow morning. It
    will then fall below flood stage Thursday afternoon.
  - Flood stage is 8.0 feet.
  - Flood History...This crest compares to a previous crest of
    9.6 feet on 03/09/2011.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4244 7171 4275 7161 4281 7147 4274 7143
      4243 7165


$$

MAC009-NHC015-200245-
/O.CON.KBOX.FL.W.0068.231219T2100Z-231222T0000Z/
/MTHM3.1.ER.231219T2100Z.231220T1200Z.231221T1800Z.NO/
937 AM EST Tue Dec 19 2023

...FLOOD WARNING REMAINS IN EFFECT FROM THIS AFTERNOON TO THURSDAY 
EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Spicket River near Methuen.

* WHEN...From this afternoon to Thursday evening.

* IMPACTS...At 8.5 feet, In Salem, floodwaters encroach on lowest 
  lying properties on Fiedler Ave. In Methuen, floodwaters encroach 
  near properties on Horne Street, Morrison Court, and Broadway. In 
  Lawrence, the river inundates Schofield Park and spreads onto 
  Saratoga Street. Floodwaters reach onto Willow Street as well as 
  nearby low lying buildings in the vicinity of Willow and Myrtle 
  streets. In addition, floodwaters begin to inundate Spruce Street 
  around the bridge.

* ADDITIONAL DETAILS...
  - At 8:30 AM EST Tuesday the stage was 7.6 feet.
  - Bankfull stage is 8.0 feet.
  - Forecast...The river is expected to rise above flood stage
    late this afternoon to a crest of 8.3 feet tomorrow morning.
    It will then fall below flood stage early Thursday afternoon.
  - Flood stage is 8.0 feet.
  - Flood History...This crest compares to a previous crest of
    8.1 feet on 04/01/2014.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4280 7126 4284 7119 4271 7113 4269 7119


$$

Belk

What forecasters said that day

The local office's own words before this river flood 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 river flood warning went out at Dec 19, 3:40 AM EST, 1 hour 13 minutes earlier.

Area forecast discussion, Dec 19, 3:40 AM EST, 1 hour 13 minutes before
Area Forecast Discussion
National Weather Service Boston/Norton MA
340 AM EST Tue Dec 19 2023

.SYNOPSIS...

A mixture of clouds and sunshine today with mainly dry weather
outside of a few showers across the Cape/Islands early this
morning and perhaps a brief spot shower this afternoon. A
prolonged period of dry weather sets up from Wednesday through
this weekend with fairly seasonable temperatures. Those hoping
for a white Christmas will need to wait for another chance in
2024, with little to no precipitation expected through the
weekend.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...

335 AM Update...

* A few showers into mid-morning across the Cape/Islands
* Mixture of clouds & sun today with highs well into the 40s

The powerful storm that impacted the region yesterday was
already in northern Quebec early this morning and continuing to
race northward. However...deep mid level trough and its
associated cold pool aloft was still to our west. There was
enough meridional flow ahead of this deep trough for one last
batch of showers to briefly impact the Cape/Islands through mid-
morning.

Otherwise....the upper level energy and its associated cold
pool aloft to our west will cross the region today. This should
result in a mixture of clouds and sunshine with a period of
mostly cloudy skies this afternoon across the interior. Lack of
low level moisture/forcing will result in generally dry weather
today...but enough shortwave energy exists for a brief spot
shower or even a high terrain rain/wet snow shower this
afternoon.

High temps this afternoon should reach the lower to middle 40s
across the interior and middle to upper 40s across eastern New
England. These temps are much cooler than the record highs set
yesterday...but still about 5 degrees above normal for this time
of year. A bit of a westerly breeze expected this afternoon
with gusts on the order of 15 to 25 mph.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH 6 PM WEDNESDAY/...

Key Points...

* Dry/Seasonably Chilly tonight with lows mainly in the 20s
* Sunny Wed with highs in the lower-middle 40s

Details...

Tonight...

A ridge of high pressure builds in from the west tonight. This
should result in diminishing winds and skies becoming mostly
clear. We may see a period of ocean effect clouds develop late
across the Cape/Nantucket with chilly N-NW flow...but
nothing more than that. Overnight low temps should be fairly
seasonable for this time of year...mainly in the 20s. We may see
a few upper teens in the normally coldest outlying locations in
western MA.

Wednesday...

A ridge of high pressure to the west of our region will result
in sunny skies Wednesday. High temperatures should top off
mainly in the lower to middle 40s with generally light northwest
winds.

&&

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

Highlights

* Quiet and dry conditions

* Near to below normal temperatures

* Breezy through Friday esspically over the waters.

A strong 1035mb high begins to build north from the mid-Atlantic
states and merge with a 1045mb high dropping out of Ontario. This
will lead to a prolonged stretch of quiet and dry weather for
southern New England. As the surface highs move towards the region,
the pressure gradient will remain tight being sandwiched between the
remnants of Mondays low pressure system stalling offshore and even
intensifying a bit. What this will lead to is breezy conditions
lasting through Friday. Gusts inland wont be anywhere as strong as
we saw Monday topping out at 20-30mph on Thursday. Over the waters
and near the shores, Gale force gusts are possible with the latest
NBM showing 10-40% chance for gusts of 40mph mainly Thursday.
Starting Friday night, the center of the high pressure moves
overhead allowing the pressure gradient to relax and winds to calm
down. With little to no wind Friday night and beyond, overnight lows
likely begin to drop into the mid to low teens away from the coasts
with clear skies. Used a blend of the MOS guidance and NBM for
overnight lows Friday night and beyond. As for highs, there will be
a downward trend through Friday and Saturday only topping out in the
mid to upper 30s. Next chance for precipitation could come Sunday
with the GFS showing a weakening low exiting the Great Lakes,
however, the GFS appears to be an outlier at this time with
ensembles showing around a 10-20% chance for accumulating precip.

Next Week...

The pattern becomes unsettled again mid to late next week with
another inside runner possible. However, uncertainty is very high at
this range with disagreement among deterministic guidance and large
spread in the ensembles.

&&

.AVIATION /08Z TUESDAY THROUGH SATURDAY/...

Forecast Confidence Levels:

Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

06Z TAF Update...

Today...High Confidence.

A scattered to broken deck of mainly VFR cloudiness is on tap
for today...but some marginal MVFR ceilings are possible at
times along with an afternoon spot shower/high terrain snow
shower. In addition...a period of MVFR conditions along with a
few additional showers may also impact parts of the Cape and
Nantucket until mid-morning. Otherwise...SW winds becoming WNW
at 10 to 15 knots with a few afternoon gusts of 20 knots &
perhaps up to 25 knots across parts of interior MA & CT.

Tonight...High Confidence.

VFR outside perhaps a period of marginal ocean effect MVFR
ceilings across parts of the Cape/Nantucket. NW winds 5-10
knots.

Wednesday...High Confidence.

VFR. NW winds of 5 to 10 knots except 10 to 15 knots across
parts of the Cape/Nantucket.

KBOS TAF...High confidence in TAF.

KBDL TAF...High confidence in TAF.

Outlook /Wednesday Night through Saturday/...

Wednesday Night through Thursday: VFR. Windy with local gusts
up to 30 kt.

Thursday Night: VFR. Windy with gusts up to 35 kt.

Friday through Friday Night: VFR. Breezy.

Saturday: VFR.

&&

.MARINE...
Forecaster Confidence Levels:

Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.

Today through Wednesday...High Confidence.

Lingering swell from yesterday/s powerful storm will keep rough seas
above small craft thresholds into Wednesday across many of our
open waters...but they will be on the downward trend over the
next 36 hours. Nonetheless...small craft headlines continue for
most of our open waters into Wednesday for rough seas. Winds
will shift to a W direction today and then NW tonight and
Wednesday. Gusts will generally be in the 15 to 25 knot range.

Outlook /Wednesday Night through Saturday/...

Wednesday Night: Moderate risk for Small Craft Advisory winds
with gusts up to 30 kt. Rough seas up to 12 ft.

Thursday through Thursday Night: Strong winds with gusts up to
35 kt. Rough seas up to 14 ft.

Friday: Low risk for Small Craft Advisory winds with gusts up
to 30 kt. Rough seas up to 11 ft.

Friday Night: Winds less than 25 kt. Areas of rough seas.

Saturday: Winds less than 25 kt. Areas of seas approaching
5 ft.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 7 PM EST Wednesday for ANZ231-250-
     251-254>256.
     Small Craft Advisory until 4 PM EST Wednesday for ANZ232-235-
     237.
     Small Craft Advisory until 7 AM EST Wednesday for ANZ233-234.

&&

SYNOPSIS...Frank/KP
NEAR TERM...Frank
SHORT TERM...Frank
LONG TERM...KP
AVIATION...Frank/KP
MARINE...Frank/KP

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 18, 9:40 PM ESTRiver Flood WarningBOXMiddlesex, Worcester4 days
Dec 18, 9:48 PM ESTRiver Flood WarningBOXEssex, Middlesex51 hr
Dec 18, 9:48 PM ESTRiver Flood WarningBOXEssex63 hr
Dec 18, 9:52 PM ESTRiver Flood WarningBOXMiddlesex, Worcester66 hr
Dec 18, 11:43 PM ESTRiver Flood WarningBOXEssex21 days
Dec 18, 11:43 PM ESTRiver Flood WarningBOXEssex, Middlesex59 hr
Dec 18, 11:43 PM ESTRiver Flood WarningBOXEssex67 hr
Dec 19, 12:00 AM ESTRiver Flood WarningBOXHampden36 hr
Dec 19, 9:54 AM ESTAreal Flood WarningBOXMiddlesex, Norfolk24 hr
Dec 19, 2:56 PM ESTGale WatchBOX12 hr
Dec 19, 3:41 PM ESTRiver Flood WarningBOXEssex25 hr

Nearby

River Flood Warnings in Massachusetts, 2023Every river flood warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.