The tweet states that the president has ordered FEMA to stop sending money "unless they get their act together", which the president calls "unlikely". It is a disgraceful situation in lives & money!' Trump added.
"Our climate is changing - we have to change with it".
"California has always been a leader with respect to sound, science-based forest management practices on private land", J. Keith Gilless, a professor of forest economics at the University of California, Berkeley, told NBC News, saying Trump was "at best uninformed".
This tweet came hours after Newsom posted this message about the need to prepare for natural disasters.
The congressman then tried to direct Trump's attention to the people in his strongly Republican district who have been hurt by the fires. Newsom asked for $105 million to improve wildfire safety on Tuesday.
FEMA didn't immediately respond to a request for comment.
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There was no further information on the veracity of Trump's Twitter claim.
Trump at the same time appeared concerned for California residents in the path of the fires' wrath and unconcerned that cutting off the FEMA aide might put more people at risk of injury, death or losing their homes. Jerry Brown described as a "big, big win" for California.
Days after the Camp Fire began burning, Trump threatened to withhold federal payments to California, accusing the Golden State of "poor" forest management.
Additionally, a little more than half of forestland in California is owned and managed by the federal government.
The Camp Fire in California past year was the costliest natural disaster anywhere in the world in 2018, with a total cost $16.5 billion, according to a report this week by the reinsurance company Munich RE.
The recent large California wildfires continue to make headlines.
Trump's administration has said repeatedly that California's wildfires are evidence that forests must be managed more aggressively, through "thinning" and prescribed burns to reduce fuel loads. "Billions of dollars are given each year, with so many lives lost, all because of gross mismanagement of the forests".