Tornadoes are possible in a round of strong thunderstorms that are expected to make their way through the New York City region late Monday afternoon, WABC is reporting.

A severe thunderstorm watch went into effect at 11:30 a.m. for all five boroughs, Long Island, and these areas in New Jersey and Connecticut. It will remain in place through 8 p.m.

A line of thunderstorms is expected to begin moving through the western part of our region – in New Jersey and the Hudson Valley – at about 5 p.m.

It’s then going to move east toward New York City and into Connecticut between 6 and 8 p.m. And then it will hit Long Island between about 7 to 8 p.m.

The highest severe threat is over northeastern New Jersey and the Lower Hudson Valley, where possible tornadoes could form. Hail, damaging winds and significant rainfall are expected.

Flash flooding is also possible throughout New York, New Jersey and Connecticut as part of this storm.

A severe thunderstorm watch has been issued for parts of CT, MA, NJ, NY, PA, VT until 8 PM EDT pic.twitter.com/R1MWcjG9mt

— NWS New York NY (@NWSNewYorkNY) June 19, 2017

Potential for Severe Thunderstorms and Flooding this afternoon and evening. Here are some details. pic.twitter.com/QG1eekpcek

— NWS New York NY (@NWSNewYorkNY) June 19, 2017

A Flash Flood Watch is in effect for parts of the area from 12 pm Mon through 4 am Tue. 1.5"-2.5" of rain with higher amounts in t-storms. pic.twitter.com/T38gcpzH8U

— NWS New York NY (@NWSNewYorkNY) June 18, 2017

A flash flood watch has been issued from 12 p.m. through late Monday for the following counties:

New York

Bronx
Brooklyn
Nassau
Manhattan
Orange
Putnam
Queens
Staten Island
Rockland
Westchester

New Jersey

Bergen
Essex
Hudson
Passaic
Union

Connecticut

Fairfield
New Haven

Numerous showers and thunderstorms are expected to roll through those areas starting late Monday afternoon through midnight, NWS said.

Multiple rounds of thunderstorms could spark flash flooding. At its height, the storm is forecast to dump 1 to 2 inches of rain per hour.

Wind gusts up to 60 mph are possible and have the potential to down trees and powerlines and cause isolated structural damage, NWS said. The weather agency said isolated “weak tornadoes” could form.

Large hail, about 1 inch in diameter or bigger, is also possible.

NEW: #Severe t-storm watch issued for parts of PA, NJ, NY, CT, MA, & VT til 8 pm. Damaging winds are primary threat. pic.twitter.com/qiMvoe3RNG

— The Weather Channel (@weatherchannel) June 19, 2017

On the coast, strong rip currents are expected with surf height ranging from 3 to 5 feet along Atlantic Ocean beaches in New Jersey and beaches in Brooklyn, southwestern Suffolk, southern Queens and southern Nassau counties; and 4 to 6 feet at beaches in southeastern Suffolk County.

Skies will gradually clear toward the morning, but the chance of a scattered shower or thunderstorm will linger late into the day on Tuesday.

Temperatures will be in the low- to mid-80s for the rest of the week.

(Sources: WABC / AccuWeather.com / PIX11)