Authorities in Azusa, California, are searching for a man who they say intentionally started the 2,500 acre Ranch2 Fire in Los Angeles County.

Wildfires in California and Colorado thrived amid a longterm heatwave. A new fire was reported near Los Angeles as Colorado battled its own blazes.

A "dangerous" and long-duration heat wave will build across the West this weekend through much of next week, the National Weather Service said.

California firefighters racing to a contain a massive blaze that has erupted north of Los Angeles are fearing that a sweltering forecast Friday combined with possible gusty winds could further fan the flames.

Dry vegetation is fueling several California wildfires and forecasters are warning that the risk of new blazes erupting is very high as temperatures rise and humidity levels drop

Another large wildfire, the Ranch Fire, could threaten a homeless encampment in an L.A. suburb, neighbors and officials said.

Phoenix has now seven days of at least 115 degrees this year.

Details on the active wildfires in the state right now, where to avoid, GPS locations, and evacuation information.

The fire exploded in size within hours after it broke out in dense forest on Wednesday afternoon, sending up a towering plume visible for hundreds of miles around.

Hundreds of homes have been evacuated in Los Angeles as firefighters tackle a huge forest fire north of the city.

RT @LaPuente626sgv: Another fire is reported on Newburgh and Donna Beth in Azusa at approximately 8:42pm. Scene is active.

RT @SGVCityWatch: BREAKING NEWS: Multiple spot fires reported along Highway 39 above Azusa/Glendora near mile marker 19.46. Firefighters ar…

RT @LaPuente626sgv: Another fire is reported on Newburgh and Donna Beth in Azusa at approximately 8:42pm. Scene is active.

Another fire is reported on Newburgh and Donna Beth in Azusa at approximately 8:42pm. Scene is active.

A.A. Allen, a fervent evangelist with fire in his eyes. John G. Lake, a man of faith, whose healing touch defies. William Seymour, leading the Azusa Street Revival's rise. John Wesley and Charles Wesley, hymnists harmonizing skies. https://t.co/DsIlxmw6xY

RT @Ikemenfangirl: Tears of Themis : Mainline update (CN server) The wind blows and the night darkens, and the fire burns. On June 30th, t…

With hands extended she bends the earth itself to angle those volcanoes outwards, before showing that upon eruption they fire confetti instead. Which using the surprise value she'd immediatly step in to clock Azusa with a fist. https://t.co/xBmMKDn9dx

RT @excelblem: Happy Father's Day, fellow Fire Emblem fans! https://t.co/IBxdmgb8b3

Possible pedestrian incident : FIRE-Report of Fire I210 E / Azusa Ave, CHP Baldwin Park area. https://t.co/76oN0fOgci

A man was fatally shot and two others injured in a gang-related shooting in Azusa, California. The victims were standing outside an apartment complex when several suspects approached and opened fire before fleeing the scene. The investigation is still… https://t.co/DdEFFchnAT

Another crazy transient setting a fire at Doublz on Hacienda. The homeless wave is coming to the San Gabriel Valley. We also got another video today of a transient woman walking with no pants or underwear today on Azusa and Hurley. @police_frequency https://t.co/uSplBzDv1h

RT @anny25717503: Another crazy transient setting a fire at Doublz on Hacienda. The homeless wave is coming to the San Gabriel Valley. We a…

KARMA! SWEET, SWEET KARMA! Fear not! The fire won't spread — unless Azusa can't get the fire extinguisher working. Which is a grand possibility at this point. https://t.co/mZZF52HlJu

Another crazy transient setting a fire at Doublz on Hacienda. The homeless wave is coming to the San Gabriel Valley. We also got another video today of a transient woman walking with no pants or underwear today on Azusa and Hurley. https://t.co/gyA6dBtBoW

[He's watching Azusa freak out.] [Eating some popcorn...] [Once he sees fire he's running into a wall, landing on his ass.] Ouch... https://t.co/w7flyFNknV

Another crazy transient setting a fire at Doublz on Hacienda. The homeless wave is coming to the San Gabriel Valley. We also got another video today of a transient woman walking with no pants or underwear today on Azusa and Hurley