Rain and thunderstorms are set to dampen Earth Day events across portions of the United States on Tuesday.
Tuesday marks the 44th annual Earth Day, which started in 1970 to highlight environmental issues. Since then, over 1 billion acts of green have taken place.
In Philadelphia, Greensgrow Farms is sponsoring a neighborhood greening event that participants will help plant flowers in various locations around the city. While a couple of showers and thunderstorms are forecast, much of the event, which is scheduled from 10 a.m. to 3 p.m. EDT Tuesday, will be rain-free.
"The wet weather should hold off in Philadelphia until 3 or 4 p.m. Tuesday," AccuWeather Senior Meteorologist John Gresiak said.
Similar weather is expected in Washington, D.C., where the National Zoo is sponsoring some events.
A cold front will be responsible for the thundery rain as it advances from the Appalachians toward the East Coast Tuesday afternoon and evening.
Events at the Atlanta Botanical Garden will be impacted by some showers and thunderstorms along the same cold front.
While there will be some rain and thunderstorms in the East, severe weather is not forecast. However, if you hear thunder during these events, seek shelter. Remember to pack and umbrella or poncho.
Allow extra travel time, since showers and storms may reduced visibility and create slick roads.
Meanwhile, a chilly storm will advance into the Northwest on Tuesday, ushering in plenty of clouds, rain and gusty winds.
Some Seattle area schools are planning to take classes outdoors at the Seward Park Environmental and Audubon Center to work on a restoration project in the park.
"It will be mostly cloudy and cool with showers, but they'll be most numerous in the morning," AccuWeather Senior Meteorologist and Western Expert Ken Clark said.
Farther south, residents in the San Francisco Bay area will help revive Lafayette Square Park in Oakland, Calif.
"Windy and cool weather will impact those in the Bay area," Clark said. "Clouds along with a shower or two will be around in the morning, but sunshine will return by the afternoon."
While events will occur throughout the week across the country, many are planned for this upcoming weekend. Events are scheduled near Philadelphia, Baton Rouge, La., and Yosemite National Park on Saturday. Another pair of storms across the West and East may dampen these events.