A Red Flag Warning is a weather alert for dangerous fire conditions —usually a mix of strong winds, low humidity, and very dry vegetation —that can make any fire start and spread very quickly. It is issued by weather officials when wildfire risk is especially high.

Quick Scoop

In simple terms, it means be extra careful with anything that could spark a fire. Typical triggers include dry fuels, gusty winds, and very low humidity, and the warning criteria can vary by region.

What it means for you

  • Avoid outdoor burning.
  • Don’t toss cigarettes or use equipment that could create sparks.
  • Be alert for fast-moving wildfires and follow local emergency guidance.

Red Flag Warning vs. Fire Weather Watch

A Fire Weather Watch means dangerous fire conditions are possible soon, while a Red Flag Warning means they are expected or already happening.

If you want, I can also give you a one-sentence version or explain what to do during a Red Flag Warning.