Hundreds of people are without power Tuesday morning after a line of strong thunderstorms rolled through Connecticut late Monday afternoon.

At 5:30 a.m., United Illuminating reported nearly 330 outages. Fairfield was hardest hit with 317 outages. UI reported scattered outages in Shelton, North Haven, Trumbull, Easton, East Haven and Hamden.

UI gave a 3:30 p.m. Tuesday estimated power restoration time for most of the outages.

Eversource reported nearly 1,400 outages Tuesday morning. With 839, the town of Sprauge in eastern Connecticut had the most outages in the state. Westport had nearly 300. 183. Scattered outages were also reported in Danbury,Weston, Wilton, Stamford, Monroe, Madison, Guilford and Clinton.

Those outages are down considerably since Monday afternoon when both UI and Eversource reported more than 5,300 outages in southwest Connecticut.

Westport Police Lt. David Wolf said a strong storm passed through the town around 4 p.m. Monday. “As a result, several tree limbs as well as power lines were taken down.”

He said there were reports of energized power lines lying on the ground. “Therefore, do not approach any power line that you may come across and please do not go around any barricades that have been set up by the police department.”

On Tuesday morning, Westport police said main roadways have re-opened with the exception of a portion of Cross Highway. Cross Highway is closed to through traffic between Roseville Road and Punch Bowl Lane. Police ask to use Roseville Road or Punch Bowl Lane and Hockanum Road as alternate routes.

Fairfield police also reported several downed trees and power lines throughout town.

In Norwalk, a firefighter was injured after a lightning strike sparked a fire that heavily damaged a Richlee Road house late Monday afternoon.

The two occupants of the home, two dogs and a cat were unharmed in the blaze, fire officials said.

The firefighter was hurt when sections of the ceiling fell on him knocking him temporarily unconscious. Firefighters that were in the immediate area helped remove the firefighter out of the house.

“Upon arrival at the split level ranch style home, heavy fire was engulfing the rear corner and had worked its way into the interior, of the home,” the Norwalk Fire Department posted on its Facebook page.

“Firefighters made entry through the front door to fight the fire that had engulfed the kitchen, dining room and living room. At the same time firefighters contended with a 120-gallon propane tank against the rear of the home, that was blowing off pressure with a 40-foot fireball.

“Fire crews cooled the propane tank to prevent a failure, until the contents were completely expelled through the relief valve.”

In Middletown, a large tree uprooted during Monday's thunderstorms and crashed into a vacant home on Main Street, according to Fox 61.

The tree was ripped "straight from its roots" and toppled onto the right side of the house, FOX 61 said. The house was vacant at the time and no one was injured, reports said. It is unclear if anyone lives in the home. The tree also knocked out a window in a neighboring home, residents said.

Berlin police also reported that a tree came down on Worthington Ridge between Peter Parley and Sunset Lane that took out power to the area. The road was closed for several hours, police said.

The thunderstorms also brought heavy rain to parts of Connecticut, according to the Community Collaborative Rain, Hail and Snow Network.

Rainfall totals included .93 of an inch of rain in Fairfield and .66 in Milford.

The National Weather Service said high pressure will briefly build in today bringing a mostly sunny sky.

“Temperatures will once again rise into the upper 80s to around 90, but dewpoints will be a few degrees lower keeping heat index values closer to the actual air temperature. A warm front will lift north tomorrow morning and with it, a return of warm and humid conditions.”

The NWS said an approaching cold front will bring the risk for showers and thunderstorms Tuesday afternoon. Some storms will bring locally heavy rainfall. The cold front will then move through on Thursday bringing relief from the heat and humidity by the end of the week.