Weather conditions triggered red flag warnings in the northeast part of the United States as firefighters in California continued to battle a large wildfire that has burned over 20,000 acres.

Massachusetts is under a red flag warning again on Tuesday as dozens of brush fires continue burning across the state.What is a red flag warning?The National Weather Service issued the red flag warning through 6 p.

Tuesday's is not the first Red Flag Warning in recent days. The weather service has issued such warnings or special weather regarding the dry conditions "pretty regularly in the last couple of weeks," said Candice Hrencecin, a meteorologist for the weather service in Norton, Massachusetts.

A red flag warning has been issued in Connecticut for Tuesday as wind gusts may reach 35 mph, the weather service says.

A Red Flag Warning​ is back in effect for much of New York, New Jersey and Connecticut, as the fire threat remains high.

A new Red Flag Warning has been issued for Tuesday as firefighters across the Commonwealth continue to battle brush fires.

A Red Flag Warning has been issued for Southern New England from 9am to 6pm today. We have an abundance of dry ground cover and with low relative humidity and a very gusty wind this afternoon, brush fires will be easy to start,

As chillier air moves in, it moves quickly with a gusty wind out of the north today, pushing 30-35mph at times. That combined with

A Red Flag Warning for increased fire risk is issued in Boston due to dry, windy conditions, with residents advised to exercise caution with outdoor burning and potential freezes forecasted later in the week.