Red Flag, national weather service

Weather Words: Red Flag Warning
Red flag criteria is generally when relative humidity is at 15% or less, combined with sustained winds and/or gusts of 25 mph or greater. Both of these conditions must occur simultaneously for at least 3 hours in a 12 hour period, according to the NWS.
Fire weather watch vs. red flag warning: What is the difference?
We've seen reports about Los Angeles County being under "fire weather watch" and "red flag warning." What is the difference?
Los Angeles under dangerous red flag warnings for extreme fire risk again this week
A particularly dangerous situation red flag warning is in place from noon Monday to 10 a.m. PT Tuesday for a large portion of Ventura and Los Angeles counties.
California Wildfires: San Diego Fears as Red Flag Warning Area Expands
"If fire ignition occurs, conditions are favorable for very rapid fire spread and extreme fire behavior," the NWS warns.
Thousands could lose power as NWS issues another Red Flag Warning for San Diego County
Nearly 100,000 San Diegans could loose power during the next round of power shutoffs after the National Weather Service issued another Red Flag Warning for the region for Monday and Tuesday as Santa Ana winds return.
Red Flag Warning in effect for parts of San Diego County, 80K+ could lose power
NWS' 3:40 a.m. advisory indicates winds were blowing northeast at speeds between 25 to 35 mph, with gusts up to 60 mph.
Map Shows California Is Under Both Freeze and Red Flag Warnings
The NWS map created on Wednesday shows central California under freeze warnings and frost advisories while Southern California is under a red flag warning. The areas shaded in dark purple are under a freeze warning, the areas shaded in blue are under a frost advisory and the areas shaded in hot pink are under a red flag warning.
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What is PDS warning? NWS meteorologist explains
Monday's red-flag warning is a PDS, which stands for "particularly dangerous situation." But what does that mean? An NWS ...
Red flag warning issued for Inland Empire, western Coachella Valley as strong winds loom
A red flag warning has been issued for the Inland Empire and some cities in the Coachella Valley as strong gusty winds and ...
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LA Weather Timeline: Santa Ana winds to bring ‘Particularly Dangerous Situation’ Red Flag Warning
The NWS has issued a "Particularly Dangerous Situation" Red Flag Warning for Southern California, effective until 10 a.m.
Red Flag Warning returns to San Diego County, prompting Public Safety Power Shutoffs
The National Weather Service issued a Red Flag Warning starting Monday for San Diego County's inland valleys and mountains.
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PDS Red Flag Warning issued as Southern California tries to control massive wildfires: What is a PDS warning?
As firefighters struggle to gain control of massive and deadly wildfires that are raging across parts of the Los Angeles area ...
Southern California faces most urgent warning for strong winds, extreme fire danger
Forecasters in Southern California expect to issue a 'particularly dangerous situation' red flag warning for the coming week ...
LA fires: ‘Particularly Dangerous Situation’ warning expires while Red Flag remains in effect
Californians in the greater Los Angeles area are on edge as dangerous winds and temperatures are forecast. The Palisades and ...
Containment of deadly Eaton Fire increases, crews on high alert amid red flag warning
Cal Fire said crews will continue reinforcing and maintaining the wildfire's containment lines as critical fire weather is ...