Dry and cooler than normal temperatures are expected to continue through today. The 7AM sounding from Dulles broke a minimum precipitable water (PW) record for the date. PW is a measure of the amount of moisture present through the depth of the atmosphere at a given point. pic.twitter.com/SvuH2O6Fy5

— NWS Baltimore-Washington (@NWS_BaltWash) June 19, 2022