URGENT – FIRE WEATHER MESSAGE National Weather Service San Diego CA 512 AM PDT Sat Sep 5 2020 CAZ248-250-256-258-052100- /O.CON.KSGX.FW.W.0001.200905T1700Z-200907T0100Z/ San Bernardino and Riverside County Valleys – The Inland Empire- San Diego County Inland Valleys-Riverside County Mountains- Including The San Jacinto Ranger District Of The San Bernardino National Forest-San Diego County Mountains- Including The Palomar And Descanso Ranger Districts of the Cleveland National Forest- 512 AM PDT Sat Sep 5 2020
…RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 6 PM PDT SUNDAY FOR GUSTY WINDS…LOW RELATIVE HUMIDITY…AND EXTREME HEAT FOR PORTIONS OF SAN DIEGO AND RIVERSIDE COUNTIES… * WIND…Areas of east winds 15 to 20 mph gusts 25 to 35 mph.
* HUMIDITY…Lowest daytime humidity around 7 to 10 percent with poor overnight recovery.
* TIMING…The most critical conditions are expected on this afternoon. East winds will weaken this evening, then increase again slightly on Sunday morning. Winds will weaker Sunday, but continued extreme heat and low humidity will persist.
* OUTLOOK…Not as hot with some improvement Monday and Tuesday as onshore flow returns. Another threat for stronger offshore winds and hot and dry conditions returns late Tuesday through Thursday, peaking Wednesday.
* IMPACTS…If fire ignition occurs, conditions will be favorable for rapid fire spread and extreme fire behavior. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS… A Red Flag Warning means that critical fire weather conditions are either occurring now….or will shortly. A combination of wind…low relative humidity…and heat can contribute to extreme fire behavior.