The National Weather Service issues the warnings when critical fire weather conditions are either occurring or imminent. The Red Flag Warning is posted on the NOAA website and is specific to your county or zip code. Many Colorado county and city agencies provide updates on Red Flag Warnings and other National Weather Service alerts on their websites or Twitter feeds. Stay informed regarding the conditions in your area.
Here is a sample of the information included in the warning from the National Weather Service, Denver-Boulder Office:
RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN FRONT RANGE FOOTHILLS AND ADJACENT PLAINS...
* AFFECTED AREA...FIRE WEATHER ZONES 211...213...215...238... 240...242...243...244 AND 245.
* TIMING...9 AM TO 8 PM MDT FRIDAY.
* WINDS...SOUTHWEST 25 TO 35 MPH WITH GUSTS UP TO 50 MPH.
* RELATIVE HUMIDITY...AROUND 10 PERCENT.
* IMPACTS...ANY FIRES THAT START MAY SPREAD QUICKLY AND BE DIFFICULT TO CONTROL FRIDAY AFTERNOON AND EVENING.