Snowmaggedon: US Federal Gov't Closed, Almost 3,500 Flights Canceled (PHOTOS)

WASHINGTON (Sputnik) - United States government offices in Washington, DC closed due to heavy snow, the Office of Personal Management (OPM) said on Wednesday.

"Federal offices in the Washington, DC area are closed. Emergency and telework-ready employees required to work must follow their agency's policies, including written telework agreements," OPM said in a statement.

The snowfall began late Tuesday and is expected to strengthen throughout the day. The National Weather Service issued a Winter Storm Warning for the Washington area, forecasting up to 8 inches (21 cm) of snow.

Winter storm shuts down US Government in #WashingtonDC. Let’s see if there is a bill requiring to disclose who exactly is behind this kind of #weather pic.twitter.com/Tjvwi8slMZ

— Sputnik Insight (@Sputnik_Insight) March 21, 2018

A heads-up to Washington D.C. parents… Government building are closed today due to the snow storm. Travel plans have been readjusted. ❄️🌨️ pic.twitter.com/RFdUjLUvfL

— SM Middle School (@SoMilwMS) March 21, 2018

In Washington D.C., this is enough snow to have work cancelled for the day pic.twitter.com/fpFcBR1J5F

— Colin Dilworth (@Colin_Dilworth) March 21, 2018

Here's a look at Highway 81 in Washington County, TN, so far we aren't seeing any snow sticking to the roads in #NortheastTN pic.twitter.com/xJ6Jsdlb2g

— Allie Hinds (@Allie_WJHL) March 21, 2018

Meteorologists predict the storm could be the strongest snowfall in the district this season.

The fourth March nor'easter is forming. Here's what we know:

▪Over 3400 flights canceled
▪NYC, Philadelphia, and Washington, DC Public Schools closed
▪State of Emergency declared in all of New Jersey
▪Widespread power outages and over a foot of snow possible pic.twitter.com/5blNkwg62V

— Jackson Dill (@Jackson_Dill) March 21, 2018

In addition, a heavy snowstorm along the eastern coast of the United States led to the cancellation of almost 3,500 air flights, the flight-tracking website Flightaware.com reported on Wednesday.

As of 8:30 a.m. local time, 3,439 flights within, into or out of the United States were called off, the website said. Another 334 flights were delayed.

American Airlines canceled 447 flights. Republican called off 411 flights,and Jetblue grounded 402 others. Southwest reported 381 cancellations, while United listed 366.

READ MORE: 'Disney Princess' Rescues Police Car Out of Snow in the US (VIDEO)

More than 1,100 flights were canceled at three major airports around New York City. The Washington, DC area faced more than 300 cancellations.