Today is the day! Using each day as the middle of a 31 day average, February 5th has the least ACE and PDI in the entire year for the Tropical Western Pacific. Using 1970-2018 data, the 31 day mean attached to today only yields 0.69 units of ACE and 0.45 units of PDI per year! pic.twitter.com/VgJGqkEuWF
-- Ryan Allen (@1900hurricane) February 6, 2019