Have been receiving anecdotal reports of sudden rises in temperatures just before sunrise. I suspected convective "heat bursts" due to very strong downdraft winds, and this appears to be confirmed by Fairfield, CA obs. 20 degree temp rise w/t-storm winds at 6am! #CAwx pic.twitter.com/cqQvmIAA7Y

— Daniel Swain (@Weather_West) August 16, 2020