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Fort Bend County
Office of Emergency Management


What is a Red Flag Warning?

Posted February 25, 2013 9:28:12 AM CST

Precautionary / Preparedness 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 explosive Fire growth potential. Don't leave fires or ignition sources unattended. If you will be working outdoors with fire, have a properly rated fire extinguished handy. Always be aware of which direction the wind is blowing, but also what would happen were it to shift. Be extra careful around fires.

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.

More information

Source: weather.gov

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