Posted 446 days ago – National Weather Service

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Red Flag Warning In Effect Until 5 pm PDT today for very low relative humidity and dry fuels for the Los Angeles and Ventura counties except the Antelope Valley and San Gabriel Valley.

Offshore winds are diminishing across the mountains and interior valleys this morning, with onshore flow developing along the coast. Onshore flow will shift inland over the coastal valleys through this afternoon. However, due to continued very low Humidities, hot temperatures, and very dry fuels across the area, extremely high fire danger will continue through this afternoon. Increasing onshore flow and much cooler temperatures are expected over the weekend, with rain chances late Sunday and Monday.

Red Flag Warning remains in effect until 5 pm PDT this afternoon for very low relative humidity and dry fuels.

  • Winds: becoming southwest to west 5 to 15 mph with gusts to 20 mph during the afternoon.
  • Relative humidity: single digits and low teens.
  • Temperatures: mid 80s to mid 90s.
  • Impacts: If Fire ignition occurs, there could be rapid spread of wildfire that would lead to a threat of life and property.

Recommended actions

A Red Flag Warning means that critical Fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures will create Extreme Fire behavior. Please advise the appropriate officials or fire crews in the field of this Red Flag Warning.

What is a Red Flag Warning?

A Warning issued by National Weather Service fire weather forecasters to alert forecast users to an ongoing or imminent critical fire weather pattern. The warning product alerts land management agencies to the potential for widespread new ignitions or control problems with existing fires, both of which could pose a threat to life and property.

It is issued when it is an on-going event or the fire weather forecaster has a high degree of confidence that Red Flag criteria will occur within 48 hours of issuance. Red Flag criteria is based on local area vegetation characteristics, local climatology, select weather criteria and/or any combination of critical weather and fuel moisture forecasts. In some states, dry lightning and unstable air are criteria. A Fire Weather Watch may be issued prior to the Red Flag Warning.

Source: weather.gov