NWS forecasts rain, strong winds and flooding from Florida to New England

The weather service also warned of snowfall in Indiana, Maryland, West Virginia, Virginia, Michigan and Pennsylvania.

The storm that impacted Florida on Saturday and expanded northwards during Sunday will continue to generate rain, strong winds and, in some cases, flooding through Tuesday.

"The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, and small streams the most vulnerable," the National Weather Service (NWS) warned. In addition, the agency reported that the storm may produce showers and thunderstorms over the Mid-Atlantic Coast.

Local NWS services also warned that ideal conditions for the formation of tornadoes could occur in specific areas such as Carteret County in North Carolina. Experts asked residents of these areas to be alert to both the weather conditions around them, and updates from authorities.

More than 3,000 people woke up without power in Florida this Monday, according to PowerOutage.us. In Georgia, there were more than 450. Between North Carolina and South Carolina the number reached 7,000.

In South Carolina, strong winds created tides of 9.86 feet (3 meters) in Charleston Harbor – the highest record for a non-tropical system. It was also the fourth highest of all time.

This Monday the first measurable snowfall of the month was also expected. The NWS issued alarms for areas in Indiana, Maryland, West Virginia, Virginia, Michigan and Pennsylvania.

Due to both the snow and the storm, authorities have asked citizens to allow more time than usual for their trips and not to drive on flooded roads.

Thousands of people without power in the United States

As of 10:30 a.m. EST on Monday, the data on PowerOutage.us was alarming. According to the update at that time, there were 121,118 customers in Massachusetts without power. The situation elsewhere was not much better. In Connecticut, the number of homes without power was 82,000; in Maine, the figure stood at 101,852; in New Hampshire, the number of homes without power stood at 40,016; in New York, 47,830; and, in New Jersey, 46,412 customers were without power.

The situation at Boston Logan International Airport is also of concern. According to data provided by FlightAware, the number of flight cancellations (both domestic and international) was 163, while the number of flights suffering significant delays (also both domestic and international) stands at 251.