Alert archive / Massachusetts / Flash Flood Warnings in 2023

Flash Flood Warning 17, NWS Boston/Norton, MA

July 10, 2023Bristol County, Massachusetts; Newport County, Rhode Island

NWS Boston/Norton, MA issued this flash flood warning at Jul 10, 2023, 12:45 PM EDT for Bristol County, Massachusetts; Newport County, Rhode Island. It was in force for 2 hr. 2 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
Jul 10, 2023, 12:45 PM EDT (16:45 UTC)
Expired
Jul 10, 2023, 2:45 PM EDT
In force
2 hr
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Flood severity
None

Counties Bristol County, MA, Newport County, RI

The radar

The Boston radar (KBOX), 26 km from the middle of the area, began a volume at 16:47 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

TimeReportWhereRemark
Jul 10, 1:35 PM EDTFLOOD2 Sw Fall River, MACar stuck in flooding at the intersection of Pleasant St and Quequechan St relayed by amateur radio.
Jul 10, 1:53 PM EDTFLOOD3 Wsw Fall River, MAPlymouth Avenue in Fall River flooded and impassable - cars stuck in the street flooding.

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

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 4.8 hours before the alert went out and 171 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2023-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 820 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2023-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
820 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
600 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.7

Open this sounding in Storm Lab

The text

As transmitted.

807 
WGUS51 KBOX 101645
FFWBOX
MAC005-RIC005-101845-
/O.NEW.KBOX.FF.W.0017.230710T1645Z-230710T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Boston/Norton MA
1245 PM EDT Mon Jul 10 2023

The National Weather Service in Norton has issued a

* Flash Flood Warning for...
  South Central Bristol County in southeastern Massachusetts...
  Northeastern Newport County in Rhode Island...

* Until 245 PM EDT.

* At 1245 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to 2 inches of rain have 
  fallen. The expected rainfall rate is 1 to 3 inches in 2 hours. 
  Flash flooding is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Fall River, Somerset, Swansea, Tiverton, Westport, Rehoboth and 
  Freetown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4179 7119 4177 7106 4159 7113 4166 7122

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-3 INCHES IN 2 HOURS

$$

Dooley
1 follow-up statement
736 
WGUS71 KBOX 101839
FFSBOX

Flash Flood Statement
National Weather Service Boston/Norton MA
239 PM EDT Mon Jul 10 2023

MAC005-RIC005-101849-
/O.EXP.KBOX.FF.W.0017.000000T0000Z-230710T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bristol MA-Newport RI-
239 PM EDT Mon Jul 10 2023

...FLASH FLOOD WARNING WILL EXPIRE AT 245 PM EDT THIS AFTERNOON FOR 
SOUTH CENTRAL BRISTOL AND NORTHEASTERN NEWPORT COUNTIES...

Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

More rain is expected this afternoon which may lead to additional 
flooding. Please continue to monitor local weather reports!

A Flood Watch remains in effect until 800 AM EDT Tuesday for 
portions of northern and southern Rhode Island.

LAT...LON 4179 7119 4177 7106 4159 7113 4166 7122

$$

Dooley

What forecasters said that day

The local office's own words before this flash 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 flash flood warning went out at Jul 10, 9:44 AM EDT, 3 hours 1 minute earlier.

Area forecast discussion, Jul 10, 9:44 AM EDT, 3 hours 1 minute before
Area Forecast Discussion
National Weather Service Boston/Norton MA
944 AM EDT Mon Jul 10 2023

.SYNOPSIS...
Widespread showers and scattered thunderstorms with heavy rainfall
will move across the region today. The highest risk for significant
flooding will be across far western New England. Showers will be
lifting to the north tonight. Drier weather Tuesday, then hot and
humid conditions return Wednesday. The dry weather pattern is brief,
with rain chances increasing through the end of the workweek.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
940 am update...

going forecast in pretty good shape. Made minor tweaks to the
hourly PoP progression based on current radar trends. Folded in
the HREF and Hi-ResARW which seemed to be the two models doing
the "better" job compared to current precipitation coverage.

Concern the next few hours revolves around the batch of moderate
to heavy rain that is moving into eastern CT as I type. Saw a
CoCoRaHS report out of New London county CT of over 4" in 90
minutes a little bit ago. Goes to show how efficient the
rainfall is even if the reflectivities aren't super high. Very
tropical/warm rain processes going on. This batch of rain should
continue to push NNE, so concerns for flooding will move along
with that. Particularly for the urban areas around PVD. Could
also be problems in Fall River as well as that area has problems
with just 1" of rain in a short time. We are closely monitoring
radar trends and MRMS/FLASH outputs to help with flooding
potential.

Currently some breaks in the clouds across CT, but given the
very tropical atmosphere (precipitable water values ranging from
1.9" to 2.1"), the little extra instability will lead to more
showers developing. Instability parameters not overly high, but
marginal enough that a few t-storms are possible especially
across CT, RI and into SE MA for the afternoon.

630 AM Update

Forecast remains on track. KBOX radar beginning to reveal
moderate to heavy rainfall across western MA and CT this
morning. Expect moderate to heavy rainfall to continue into the
afternoon. Radar reflectivity over Rhode Island is more of the
light to moderate category at this hour, but more intense
rainfall rates are forecast to develop over this area over the
next couple of hours. No flash flood warnings have been issued
at this time, but special weather statements are in effect for
most of Hartford county and the areas west of I-91 to the east
slopes of The Berkshires. We'll continue to monitor trends and
may issue flash flood warnings where appropriate. No changes
have been made to the forecast for today, see further details in
the previous discussion.

Previous Discussion

Highlights...

* Highest risk for flash flooding through the morning will be from
  the Berkshires to western CT

* Secondary maximum of heavy rainfall possible across RI

* Low risk for a few strong/severe storms

Quite an anomalous system for mid July with amplifying mid level
trough moving east from the Gt Lakes and closing off as it lifts
into central/northern New Eng tonight. Strong forcing for ascent
acting on tropical moisture plume will bring heavy rainfall to
portions of SNE today.

Hi-res and global guidance is in excellent agreement that the most
prolific rainfall from this storm will be across VT. However, will
see heavy rainfall amounts extending south across western New Eng.
Surface low off the mid Atlc coast with an inverted trough extending
to the north into SE NY. It appears this boundary will be a focus
for heavy rainfall through the morning as it moves slowly E into
western CT/MA. This is where the greatest risk for possible flash
flooding will be this morning, especially from the Berkshires to
western CT, mainly west of I-91 as heavy showers and embedded t-
storms blossom and move north across this area. HREF indicating
moderate probs of greater than 1"/hr rainfall rates in this
region.

Numerous showers and embedded t-storms will be moving east across
rest of SNE today as shortwave energy rotates around the base of the
trough and approaches from the SW and sfc low and boundary move
eastward. Multiple CAMs are suggesting a secondary heavy rainfall
max across RI today, which could produce street flooding and bring
about rapid rises of creeks and streams and fast responding rivers.
Locally heavy rainfall also expected in portions of eastern MA but
not expecting significant impacts in this area.

Regarding rainfall amounts, we expect the heaviest rain with
potential for storm total amounts of 2-4 inches and locally
higher amounts across the Berkshires to far western CT.
Elsewhere, generally 1 to 2 inches expected with less across SE
MA and especially Cape Cod, but locally 2+ inches possible
across portions of RI.

The other concern for today is the potential for a few strong to
severe t-storms. 0-6km shear is increasing to 30-35 kt but
instability may be a limiting factor. CAPES of 500-1000 J/kg are
expected, possibly a bit higher in western New Eng. If the higher
instability can be realized the potential exists for a few strong to
severe storms with wind the main concern. However, always have to be
watchful for spinups in tropical environments with increasing shear,
especially near boundaries. Low level wind field is weak and
helicity values are unimpressive, but 0-3km CAPE is decent and we
have a boundary which could locally enhance low level shear. CSU
machine learning probs are highlighting a very low TOR risk so will
have to closely monitor radar for rotation.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH 6 AM TUESDAY/...
Tonight...

Dry slot will be overspreading SNE from the south tonight leading to
showers tapering off from south to north this evening. Mid level low
lifts across central/northern New Eng and southern edge of the comma
head could keep showers going into the overnight across northern and
especially NW MA. Lows will be mostly in the 60s.

&&

.LONG TERM /TUESDAY THROUGH SUNDAY/...
Highlights...

* Mainly and very warm Tue

* Hot and sunny on Wednesday with somewhat drier conditions

* Unsettled weather and humidity returns on Thursday

Wednesday

A brief period of dry weather for southern New England on Wednesday
as a relatively dry air mass characterized by PWATs ranging from 1
to 1.25 inches which is relatively low for mid-July. This will
support abundant sunshine across southern New England on Wednesday
with the exception of some diurnal cu. 925 hPa temps near 25 Celsius
will support hot temperatures in the low 90s at the surface. With
dewpoints only in the mid to upper 60s, the heat index will only be
a degree or two higher on Wednesday afternoon. Wednesday definitely
looks to be the pick of the week for those who prefer sunshine.

Thursday and Friday

The dry spell is very short-lived as a moisture and humidity return
to southern New England on Thursday. Deep southwest flow will advect
of a plume of 1.75+ inch PWATs over the region. This will result in
increasing cloud cover Thursday morning into Thursday afternoon. As
an upper-level disturbance approaches from the west we may see some
showers and thunderstorms by the mid-afternoon across the western
areas before spreading east Thursday night into Friday. As short-
wave energy associated with this disturbance lifts northeast over
The Hudson River Valley Thursday night through Friday, southern New
England is likely to receive another round of substantial rainfall.
Won't dive into the where and how much just yet, but given soils are
likely to be saturated from tonight and tomorrows heavy rainfall
threat, we'll have to be on the lookout for flood/flash flood
potential as we approach the end of the week. Given favorable
antecedent conditions, WPC has placed portions of western MA and CT
in a marginal risk for excessive rainfall for the Thursday/Friday
time frame and a slight risk for the Friday/Saturday time frame.

Next Weekend

Broad cyclonic flow aloft with embedded short-waves will continue to
support shower/thunderstorm chances over The Northeast next weekend.
Details are vague at this time, so have leaned on NBM for guidance
which appropriately places chance PoPs across the region.

&&

.AVIATION /14Z MONDAY THROUGH FRIDAY/...
Forecast Confidence Levels:

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

Through 12z...

IFR-LIFR stratus and patchy fog. Showers and embedded t-storms
mainly focused across western MA and northern CT.

Today...Moderate confidence.

IFR-LIFR conditions with numerous showers and scattered
t-storms moving across SNE. Improving to MVFR in the CT valley
in the afternoon. Variable winds, mostly E/SE across eastern
New Eng and shifting to N in the CT valley during the afternoon.

Tonight...Moderate confidence.

Gradual improvement from MVFR/IFR to VFR from SW to NE as
showers lift to the north. Showers may linger across portion of
N/NW MA overnight. Variable winds shift to the W/NW late
overnight.

BOS Terminal...Moderate confidence. IFR-LIFR cigs persisting
through the day and may see vsbys drop to around 1 mile at
times. Widespread showers develop mid/late morning and can't
rule out a few embedded t-storms. Improving to MVFR then VFR
03-06z as winds shift to SW.

BDL Terminal...Moderate confidence. Lowering to IFR with
numerous showers and embedded t-storms through the morning,
improving to MVFR in the afternoon and VFR this evening.

Outlook /Tuesday through Friday/...

Tuesday: VFR. Breezy. Slight chance SHRA.

Tuesday Night through Wednesday: VFR.

Wednesday Night: VFR. Isolated SHRA.

Thursday: VFR. Scattered SHRA, isolated TSRA.

Thursday Night: Mainly VFR, with areas MVFR possible. Breezy.
Numerous SHRA, isolated TSRA.

Friday: Mainly MVFR, with local IFR possible. Breezy. Numerous
SHRA, isolated TSRA.

&&

.MARINE...
Forecaster Confidence Levels:

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

Tranquil boating conditions persist through Monday with light winds
and seas. The main impact will be areas of poor nighttime and
morning visibility in areas of fog which could be dense at
times. Showers and a few t-storms will also be moving into the
waters Monday on moving northward Monday night.

Outlook /Tuesday through Friday/...

Tuesday: Winds less than 25 kt. Seas locally approaching 5 ft.

Tuesday Night through Wednesday Night: Winds less than 25 kt.

Thursday: Winds less than 25 kt. Isolated rain showers.

Thursday Night through Friday: Winds less than 25 kt. Seas
locally approaching 5 ft. Scattered rain showers, isolated
thunderstorms.

&&

.HYDROLOGY...
Rivers: For the latest river stage levels and forecasts, see the
forecasts from the Northeast River Forecast. Larger rivers and
smaller streams are expected to rise through today in the face
of heavy rains. NERFC forecasts call for rises into the Minor
Flood Category on most of the Connecticut River basins later
Monday into Tuesday. We are most concerned about the
Connecticut, Deerfield, Westfield, and Farmington Rivers to
experience rises to near or over bankfull. Besides just local
rainfall amounts reaching the rivers, rains falling upriver in
the CT River basin in VT and NH will likely lead to additional
rises even after heavy rains have ended.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Flood Watch through Tuesday morning for CTZ002>004.
MA...Flood Watch through Tuesday morning for MAZ002>004-008>012-026.
RI...Flood Watch through Tuesday morning for RIZ001>007.
MARINE...None.

&&

SYNOPSIS...KJC/RM
NEAR TERM...KJC/RM/Nash
SHORT TERM...KJC
LONG TERM...Loconto/RM
AVIATION...KJC/Loconto
MARINE...KJC/Loconto
HYDROLOGY...Team BOX
Hazardous weather outlook, Jul 10, 4:10 AM EDT, 8 hours 35 minutes before
Hazardous Weather Outlook
National Weather Service Boston/Norton MA
410 AM EDT Mon Jul 10 2023

CTZ002>004-MAZ002>004-008>012-026-RIZ001>007-110815-
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-
Eastern Franklin MA-Northern Worcester MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Northern Middlesex MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-Eastern Kent RI-Bristol RI-
Washington RI-Newport RI-
410 AM EDT Mon Jul 10 2023

...FLOOD WATCH IN EFFECT THROUGH TUESDAY MORNING...

This Hazardous Weather Outlook is for northern Connecticut, central
Massachusetts, eastern Massachusetts, western Massachusetts,
northern Rhode Island and southern Rhode Island.

.DAY ONE...Today and 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.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ005>007-013>024-RIZ008-110815-
Central Middlesex MA-Western Essex MA-Eastern Essex MA-
Western Norfolk MA-Southeast Middlesex MA-Suffolk MA-
Eastern Norfolk MA-Northern Bristol MA-Western Plymouth MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-Block Island RI-
410 AM EDT Mon Jul 10 2023

This Hazardous Weather Outlook is for eastern Massachusetts,
northeastern Massachusetts, southeastern Massachusetts and southern
Rhode Island.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ230>237-250-251-254>256-110815-
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-
410 AM EDT Mon Jul 10 2023

This Hazardous Weather Outlook is for Massachusetts and Rhode
Island coastal waters.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

For more information on upcoming hazardous weather, please see the
Area Forecast Discussion on our webpage for the latest forecast
thinking. There is also our Enhanced Hazardous Weather Outlook at
www.weather.gov/box/ehwo

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, Jul 10, 9:47 AM EDT, 2 hours 58 minutes before
Preliminary Local Storm Report...Summary
National Weather Service Boston/Norton MA
947 AM EDT Mon Jul 10 2023

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

0845 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            Section of Route 9 has significant street
            flooding. relayed by Amatuer Radio.

0834 AM     Flood            Chester                 42.28N 72.98W
07/10/2023                   Hampden            MA   Amateur Radio

            Blandford Road at Route 20 closed due to
            flooding.

0915 AM     Flood            Ashfield                42.53N 72.78W
07/10/2023                   Franklin           MA   Amateur Radio

            Conway Road flooded/impassable.

0920 AM     Flood            Conway                  42.52N 72.68W
07/10/2023                   Franklin           MA   Law Enforcement

            North Poland Road at Route 116 flooding up
            to doors of cars. Relayed by amatuer Radio.

&&
Local storm report, Jul 10, 10:34 AM EDT, 2 hours 11 minutes before
Preliminary Local Storm Report...Summary
National Weather Service Boston/Norton MA
1034 AM EDT Mon Jul 10 2023

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

1017 AM     Flood            Douglas                 42.05N 71.73W
07/10/2023                   Worcester          MA   Amateur Radio

            Gilboa Road has significant street flooding.

0845 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            Section of Route 9 has significant street
            flooding. relayed by Amatuer Radio.

0952 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            Ashfield road flooding up to windows of
            homes with rescues in progress. Relayed by
            Amatuer Radio.

1032 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            Section of Route 9 closed due to flooding.
            Relayed by Amateur Radio.

0834 AM     Flood            Chester                 42.28N 72.98W
07/10/2023                   Hampden            MA   Amateur Radio

            Blandford Road at Route 20 closed due to
            flooding.

0915 AM     Flood            Ashfield                42.53N 72.78W
07/10/2023                   Franklin           MA   Amateur Radio

            Conway Road flooded/impassable.

0920 AM     Flood            Conway                  42.52N 72.68W
07/10/2023                   Franklin           MA   Law Enforcement

            North Poland Road at Route 116 flooding up
            to doors of cars. Relayed by amatuer Radio.

1017 AM     Flood            Ashfield                42.53N 72.78W
07/10/2023                   Franklin           MA   Law Enforcement

            Williamsburg Road and Plainfield Roads
            closed due to flooding. Also Bug Hill Road
            partially washed out. Relayed by Amateur
            Radio.

&&
Local storm report, Jul 10, 11:04 AM EDT, 1 hour 41 minutes before
Preliminary Local Storm Report...Summary
National Weather Service Boston/Norton MA
1104 AM EDT Mon Jul 10 2023

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

1017 AM     Flood            Douglas                 42.05N 71.73W
07/10/2023                   Worcester          MA   Amateur Radio

            Gilboa Road has significant street flooding.

0845 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            Section of Route 9 has significant street
            flooding. relayed by Amatuer Radio.

0952 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            Ashfield road flooding up to windows of
            homes with rescues in progress. Relayed by
            Amatuer Radio.

1032 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            Section of Route 9 closed due to flooding.
            Relayed by Amateur Radio.

1100 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            North Street bridge closed due to flooding.
            Route 9 from Main to South closed due to
            flooding with 10 inches of water. Relayed by
            Amateur Radio.

0834 AM     Flood            Chester                 42.28N 72.98W
07/10/2023                   Hampden            MA   Amateur Radio

            Blandford Road at Route 20 closed due to
            flooding.

0915 AM     Flood            Ashfield                42.53N 72.78W
07/10/2023                   Franklin           MA   Amateur Radio

            Conway Road flooded/impassable.

0920 AM     Flood            Conway                  42.52N 72.68W
07/10/2023                   Franklin           MA   Law Enforcement

            North Poland Road at Route 116 flooding up
            to doors of cars. Relayed by amatuer Radio.

1017 AM     Flood            Ashfield                42.53N 72.78W
07/10/2023                   Franklin           MA   Law Enforcement

            Williamsburg Road and Plainfield Roads
            closed due to flooding. Also Bug Hill Road
            partially washed out. Relayed by Amateur
            Radio.

1025 AM     Flood            Ashfield                42.53N 72.78W
07/10/2023                   Franklin           MA   Law Enforcement

            Brrton Hill Road washed out. Relayed by
            Amateur Radio.

1056 AM     Flood            Conway                  42.52N 72.68W
07/10/2023                   Franklin           MA   Amateur Radio

            Homes on Main Street being evacuated for
            flooding. Academy Hill Road flooded and
            impassable. Relayed by Amateur Radio.

&&
Special weather statement, Jul 10, 11:38 AM EDT, 1 hour 7 minutes before
Special Weather Statement
National Weather Service Boston/Norton MA
1138 AM EDT Mon Jul 10 2023

MAZ005-012-013-017-020-RIZ001>007-101700-
Southern Worcester MA-Western Norfolk MA-Northern Bristol MA-
Southern Bristol MA-Central Middlesex County MA-
Northwest Providence RI-Bristol RI-Washington RI-Eastern Kent RI-
Western Kent RI-Newport RI-Southeast Providence RI-
1138 AM EDT Mon Jul 10 2023

...A strong thunderstorm will impact portions of southeastern
Worcester, Norfolk, south central Middlesex, Bristol, northeastern
Washington, Newport, eastern Kent, eastern Providence and Bristol
Counties with heavy rainfall through 100 PM EDT...

At 1136 AM EDT, Doppler radar was tracking a strong thunderstorm over
Cranston, moving north at 35 mph.

HAZARD...Minor flooding.

SOURCE...Radar indicated.

IMPACT...Minor nuisance flooding of typically flood prone areas near
         Providence and Fall River.

Locations impacted include...
Providence, Fall River, Warwick, Cranston, Pawtucket, Framingham,
Taunton, East Providence, Woonsocket, Coventry, Dartmouth,
Cumberland, Natick, North Providence, Franklin, West Warwick,
Needham, Johnston, North Attleborough and Norwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roads or underpasses. Avoid low lying
areas near small streams.

This storm may intensify and become severe. Stay tuned to your local
media for updates and possible warnings.

&&

LAT...LON 4147 7119 4162 7124 4171 7116 4172 7127
      4158 7133 4164 7135 4163 7133 4171 7129
      4179 7137 4165 7136 4169 7145 4168 7145
      4153 7136 4159 7142 4156 7144 4160 7153
      4230 7161 4225 7118 4152 7099
TIME...MOT...LOC 1536Z 186DEG 31KT 4180 7146

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...<30 MPH

Dooley
Local storm report, Jul 10, 12:06 PM EDT, 39 minutes before
Preliminary Local Storm Report...Summary
National Weather Service Boston/Norton MA
1206 PM EDT Mon Jul 10 2023

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

1203 PM     Flood            Providence              41.82N 71.42W
07/10/2023                   Providence         RI   Park/Forest Srvc

            Portion of Pleasant Valley Parkway flooded
            per Providence Parks Department relayed by
            Amateur Radio.

1017 AM     Flood            Douglas                 42.05N 71.73W
07/10/2023                   Worcester          MA   Amateur Radio

            Gilboa Road has significant street flooding.

1158 AM     Flood            Worcester               42.27N 71.81W
07/10/2023                   Worcester          MA   Trained Spotter

            Area of 86 southwest cutoff flooded with 4
            cars stuck in flood waters.

0845 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            Section of Route 9 has significant street
            flooding. relayed by Amatuer Radio.

0952 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            Ashfield road flooding up to windows of
            homes with rescues in progress. Relayed by
            Amatuer Radio.

1032 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            Section of Route 9 closed due to flooding.
            Relayed by Amateur Radio.

1100 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            North Street bridge closed due to flooding.
            Route 9 from Main to South closed due to
            flooding with 10 inches of water. Relayed by
            Amateur Radio.

1150 AM     Flood            Northampton             42.33N 72.68W
07/10/2023                   Hampshire          MA   Trained Spotter

            Meadow Street flooded with road closed.
            Relayed by Amateur Radio.

0834 AM     Flood            Chester                 42.28N 72.98W
07/10/2023                   Hampden            MA   Amateur Radio

            Blandford Road at Route 20 closed due to
            flooding.

0915 AM     Flood            Ashfield                42.53N 72.78W
07/10/2023                   Franklin           MA   Amateur Radio

            Conway Road flooded/impassable.

0920 AM     Flood            Conway                  42.52N 72.68W
07/10/2023                   Franklin           MA   Law Enforcement

            North Poland Road at Route 116 flooding up
            to doors of cars. Relayed by amatuer Radio.

1017 AM     Flood            Ashfield                42.53N 72.78W
07/10/2023                   Franklin           MA   Law Enforcement

            Williamsburg Road and Plainfield Roads
            closed due to flooding. Also Bug Hill Road
            partially washed out. Relayed by Amateur
            Radio.

1025 AM     Flood            Ashfield                42.53N 72.78W
07/10/2023                   Franklin           MA   Law Enforcement

            Brrton Hill Road washed out. Relayed by
            Amateur Radio.

1056 AM     Flood            Conway                  42.52N 72.68W
07/10/2023                   Franklin           MA   Amateur Radio

            Homes on Main Street being evacuated for
            flooding. Academy Hill Road flooded and
            impassable. Relayed by Amateur Radio.

&&
Local storm report, Jul 10, 12:36 PM EDT, 9 minutes before
Preliminary Local Storm Report...Summary
National Weather Service Boston/Norton MA
1236 PM EDT Mon Jul 10 2023

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

1202 PM     Flood            Providence              41.82N 71.42W
07/10/2023                   Providence         RI   Law Enforcement

            Route 146 near construction site has
            significant flooding. relayed by Amateur
            Radio.

1203 PM     Flood            Providence              41.82N 71.42W
07/10/2023                   Providence         RI   Park/Forest Srvc

            Portion of Pleasant Valley Parkway flooded
            per Providence Parks Department relayed by
            Amateur Radio.

1220 PM     Flood            Cranston                41.77N 71.48W
07/10/2023                   Providence         RI   Trained Spotter

            Car stuck in street flooding at the Wilbur
            Avenue Bridge relayed by Amateur Radio.

1222 PM     Flood            Providence              41.82N 71.42W
07/10/2023                   Providence         RI   Law Enforcement

            Narragansett Avenue cars stuck in street
            flooding. relayed by Amateur Radio.

1225 PM     Flood            Providence              41.82N 71.42W
07/10/2023                   Providence         RI   Law Enforcement

            Downtown flooded with 1 foot of water.
            Relayed by Amateur Radio.

1228 PM     Flood            Cranston                41.77N 71.48W
07/10/2023                   Providence         RI   Law Enforcement

            Parrk Avenue at Southern Street flooded and
            impassable, road closed. Relayed by Amateur
            Radio.

1017 AM     Flood            Douglas                 42.05N 71.73W
07/10/2023                   Worcester          MA   Amateur Radio

            Gilboa Road has significant street flooding.

1158 AM     Flood            Worcester               42.27N 71.81W
07/10/2023                   Worcester          MA   Trained Spotter

            Area of 86 southwest cutoff flooded with 4
            cars stuck in flood waters.

0845 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            Section of Route 9 has significant street
            flooding. relayed by Amatuer Radio.

0952 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            Ashfield road flooding up to windows of
            homes with rescues in progress. Relayed by
            Amatuer Radio.

1032 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            Section of Route 9 closed due to flooding.
            Relayed by Amateur Radio.

1100 AM     Flood            Williamsburg            42.40N 72.72W
07/10/2023                   Hampshire          MA   Law Enforcement

            North Street bridge closed due to flooding.
            Route 9 from Main to South closed due to
            flooding with 10 inches of water. Relayed by
            Amateur Radio.

1150 AM     Flood            Northampton             42.33N 72.68W
07/10/2023                   Hampshire          MA   Trained Spotter

            Meadow Street flooded with road closed.
            Relayed by Amateur Radio.

0834 AM     Flood            Chester                 42.28N 72.98W
07/10/2023                   Hampden            MA   Amateur Radio

            Blandford Road at Route 20 closed due to
            flooding.

0915 AM     Flood            Ashfield                42.53N 72.78W
07/10/2023                   Franklin           MA   Amateur Radio

            Conway Road flooded/impassable.

0920 AM     Flood            Conway                  42.52N 72.68W
07/10/2023                   Franklin           MA   Law Enforcement

            North Poland Road at Route 116 flooding up
            to doors of cars. Relayed by amatuer Radio.

1017 AM     Flood            Ashfield                42.53N 72.78W
07/10/2023                   Franklin           MA   Law Enforcement

            Williamsburg Road and Plainfield Roads
            closed due to flooding. Also Bug Hill Road
            partially washed out. Relayed by Amateur
            Radio.

1025 AM     Flood            Ashfield                42.53N 72.78W
07/10/2023                   Franklin           MA   Law Enforcement

            Brrton Hill Road washed out. Relayed by
            Amateur Radio.

1056 AM     Flood            Conway                  42.52N 72.68W
07/10/2023                   Franklin           MA   Amateur Radio

            Homes on Main Street being evacuated for
            flooding. Academy Hill Road flooded and
            impassable. Relayed by Amateur Radio.

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 6:19 AM EDTSpecial Weather StatementBOXFranklin, Hampden, Hampshire56 min
Jul 10, 7:14 AM EDTSpecial Weather StatementBOXBristol91 min
Jul 10, 7:22 AM EDTSpecial Weather StatementBOXFranklin, Hampden, Hampshire83 min
Jul 10, 8:30 AM EDTAreal Flood WarningBOXFranklin, Hampden, Hampshire5 hr
Jul 10, 8:50 AM EDTSpecial Weather StatementBOXBristol85 min
Jul 10, 10:29 AM EDTAreal Flood WarningBOXHampden, Hampshire, Middlesex, Worcester4 hr
Jul 10, 11:38 AM EDTSpecial Weather StatementBOXBristol, Norfolk82 min
Jul 10, 11:49 AM EDTAreal Flood WarningBOXBristol, Middlesex, Norfolk, Worcester3 hr
Jul 10, 11:53 AM EDTAreal Flood WarningBOXMiddlesex, Worcester3 hr
Jul 10, 12:51 PM EDTSpecial Weather StatementBOXBristol, Norfolk, Plymouth84 min
Jul 10, 12:52 PM EDTRiver Flood WarningBOXFranklin25 hr
Jul 10, 12:52 PM EDTRiver Flood WarningBOXFranklin, Hampshire60 hr
Jul 10, 12:52 PM EDTRiver Flood WarningBOXHampden, Hampshire21 days
Jul 10, 12:52 PM EDTRiver Flood WarningBOXHampden62 hr
Jul 10, 12:52 PM EDTRiver Flood WarningBOXHampden40 hr
Jul 10, 2:24 PM EDTSpecial Weather StatementBOXEssex, Suffolk66 min
Jul 10, 2:38 PM EDTSpecial Weather StatementBOXFranklin37 min
Jul 10, 2:53 PM EDTRiver Flood WarningBOXBerkshire, Franklin13 hr
Jul 10, 3:24 PM EDTSpecial Weather StatementBOXMiddlesex, Norfolk, Worcester81 min
Jul 10, 4:24 PM EDTFlash Flood WarningBOXWorcester3 hr
Jul 10, 4:54 PM EDTFlash Flood WarningBOXWorcester2 hr
Jul 10, 5:30 PM EDTSpecial Weather StatementBOXMiddlesex60 min
Jul 10, 6:08 PM EDTRiver Flood WarningBOXHampden21 days

Nearby

Flash Flood Warnings in Massachusetts, 2023Flash Flood Warnings in Rhode Island, 2023Every flash 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.