What Boston meteorologists are saying about the timing and impacts of Monday’s heavy rain

Heavy rainfall expected across much of southern New England into this afternoon. Flash Flood Watches remain in effect. Anywhere from 1-2" is anticipated with the highest amounts along the NH/MA border. #mawx #ctwx #riwx pic.twitter.com/n5BiLzZZxO

— NWS Boston (@NWSBoston) July 12, 2021

[2:30 AM – 3 AM Radar loop] Rain overspreading southern New England bringing heavy downpours & a few rumbles of thunder. Folks will want to take it slow if traveling this morning. #mawx #ctwx #riwx pic.twitter.com/OAv8EqJgS3

— NWS Boston (@NWSBoston) July 12, 2021

Gusty winds and buckets of rain with this line south of Boston. Moving east to southeast. pic.twitter.com/ge4Ijt26fH

— Chris Lambert (@clamberton7) July 12, 2021

Few of the rain totals so far… 1-2" for many. pic.twitter.com/dV93kXZXUj

— Chris Lambert (@clamberton7) July 12, 2021

Minor river flooding expected on the Charles https://t.co/SSnj8Avs7u

— Chris Lambert (@clamberton7) July 12, 2021

5-10" of rain so far this July for a wide swath of Southern New England, away from the south coast. pic.twitter.com/YtyNXgnkqp

— Chris Lambert (@clamberton7) July 12, 2021

Only 11 complete days in for the month of July, and already the 5th wettest on record. Running cool too, about 3.5 degrees below average. pic.twitter.com/cNV78ofjSe

— Chris Lambert (@clamberton7) July 12, 2021

Warmer mid to late week. High humidity too. Thursday & Friday looking like good beach days. pic.twitter.com/5q5c95VM5U

— Chris Lambert (@clamberton7) July 12, 2021

Ground is saturated, scattered downpours moving through this morning capable of dropping a quick inch for some towns. Pockets of street/poor drainage area flooding possible. Flash flood watch is up. pic.twitter.com/oFljemgmAS

— Chris Lambert (@clamberton7) July 12, 2021

FLOOD WARNING for the Charles River at Dover… Minor flooding expected in parts of Needham, Natick and Wellesley along low lying parts of the river. @boston25 pic.twitter.com/neCoH5Ztay

— Shiri Spear (@ShiriSpear) July 12, 2021

Already more than 1" rainfall in Orange since midnight! #soaker #mawx @boston25 pic.twitter.com/vaeC1jNKoG

— Shiri Spear (@ShiriSpear) July 12, 2021

RAIN today… We just can’t catch a break this month! #mawx #boston #newengland pic.twitter.com/QkPrb4b2Qs

— Shiri Spear (@ShiriSpear) July 12, 2021

Areas of heavy rain will slow down the AM commute. Showers will be more scattered for the drive home. #mawx #boston @boston25 pic.twitter.com/7ngqBFXMoJ

— Shiri Spear (@ShiriSpear) July 12, 2021

HEAVY RAIN…
At 8am slowing down the commute… watch for ponding and areas of poor drainage flooding. Heaviest rain near and north of the pike until noon #WCVB pic.twitter.com/l3bvGAzhTm

— Cindy Fitzgibbon (@Met_CindyFitz) July 12, 2021

Good Monday morning! Another wet day ahead with pockets of heavy rain and downpours this morning. FLASH FLOOD WATCH until 8pm as it won't take much rain to cause poor drainage flooding after such a wet month.
Turn on #WCVB for forecast details pic.twitter.com/wjGQq2BsRj

— Cindy Fitzgibbon (@Met_CindyFitz) July 12, 2021

MONDAY…
Areas of heavy rain and downpours this morning linger until about lunchtime today… then drier this afternoon with just the risk of a passing shower. Cool with temps steady in the mid to upper 60s with an ENE wind #WCVB pic.twitter.com/EyyJ5Rulln

— Cindy Fitzgibbon (@Met_CindyFitz) July 12, 2021

MORE HEAVY RAIN…
Another 1-2" rain focused along and north of the pike today with 1/2-1" to the south.
-With already saturated ground, this could lead to flash flooding.
-FLASH FLOOD WATCH until 8pm.
-Areas of rain and downpours thru midday then drier this afternoon #WCVB pic.twitter.com/1Ki7QFnhyO

— Cindy Fitzgibbon (@Met_CindyFitz) July 12, 2021

MONDAY AM weather update ⤵️
More rain 🌧 today! Pockets of heavy rain and downpours this morning could lead to flooding before we dry out some this afternoon #WCVB pic.twitter.com/gsJhW6Msua

— Cindy Fitzgibbon (@Met_CindyFitz) July 12, 2021

7DAY FORECAST…
Today is the wettest day of the week… it'll be cool thru Tuesday then it warms up. Back into the 80s and drier midweek. Scattered t-storms in the heat and humidity this weekend- not an all day rain #WCVB pic.twitter.com/lVyUTo3HLq

— Cindy Fitzgibbon (@Met_CindyFitz) July 12, 2021

Coming down in buckets right now. Expect lower visibility along the Pike,128, and 93. Will need to pack the patience on the roads today. pic.twitter.com/IgQ7aY5DbS

— Zack Green (@zackgreenwx) July 12, 2021

Here we go again. Flash Flood Watch in effect from midday Monday through Tuesday morning. With a completely saturated ground, could see quick flooding of low laying areas and poor drainage spots this afternoon. pic.twitter.com/kaqcbaI2M0

— Zack Green (@zackgreenwx) July 12, 2021

Since midnight:
1/4" in Boston
1/2" in Fitchburg
3/4" in Taunton

Tallies will go up through the day. pic.twitter.com/JKkpOlYYQF

— Zack Green (@zackgreenwx) July 12, 2021

Rain chances diminish through the week but we still hold on to spotty showers most days. Keep the rain gear close by. pic.twitter.com/VLDDovZmU3

— Zack Green (@zackgreenwx) July 12, 2021

Hey July…who hurt you?

Boston has seen rain every day of the month (so far). Even the 5th couldn't help but get a trace. pic.twitter.com/r6tWrCRfcy

— Zack Green (@zackgreenwx) July 12, 2021