Total precipitable water (a measure of water vapor in a vertical column of the atmosphere) is a great indicator of precipitation potential. You can see abundant moisture streaming into W WA in the form of an atmospheric river, which will form Friday into next week. 🌧️ For those unfamiliar with precipitable water, this animation is displaying liquid precipitation potential from 4 PM Thursday through 4 AM next Wednesday. The higher the values, the greater rainfall intensity & precipitation potent

8.2K views · 130 reactions | 略️流 FREEZING RAIN There is the potential for Freezing Rain this week, mainly between THU Night thru FRI. The highest chances for the Puget Sound metro area will be between 4-10am FRI (aka the morning commute). Freezing rain is even more dangerous than snow! | US National Weather Service Seattle Washington | Facebook