A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information.

RED FLAG WARNING IN EFFECT THROUGH 8 PM PDT THURSDAY FOR THE WESTERN SAN GABRIEL MOUNTAINS AND HIGHWAY 14 CORRIDOR... ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY EVENING FOR THE INTERIOR MOUNTAINS OF SAN LUIS OBISPO AND SANTA BARBARA COUNTIES INCLUDING THE SANTA LUCIAS... .A strengthening upper level high pressure system combined with weak offshore flow will bring another heat wave to the region through at least Thursday. Areas in the Red Flag Warning and Fire Weather Watch will have enhanced offshore winds at times during the period overlapping with the hot and very dry conditions, with humidities falling into the single digits. The hot and unstable conditions will bring very high mixing heights (similar to the Bridge Fire event) which will create favorable conditions for large vertical plume growth with any new fires. * TEMPERATURES...Highs 96 to 106 degrees at lower elevations, with mixing heights peaking at 12,000 to 20,000 feet on each afternoon. Minimum temperatures of 72 to 85 degrees will be common. * RELATIVE HUMIDITY...Minimum humidity 5 to 15 percent each day, with very poor overnight recovery of 12 to 25 percent. * WINDS...Northeast winds 10 to 20 mph with gusts 25 to 35 mph. * IMPACTS...If fire ignition occurs, conditions are favorable for large vertical plume growth, rapid fire spread, and extreme fire behavior which would threaten life and property.