Light rain and a chill in the air. Some snow accumulation in the mountains. Towering cumulus clouds and showers. It seems so strange. Normal weather.
Here is a plot of the temperatures at Sea-Tac Airport for the past 12 weeks, with the normal high (red) and low (blue) temperatures shown.
The freezing level dropped below 3000 feet today and the snow level dipped to around 1500 feet for a short time. Imagine that. Paradise, on Mount Rainier, received over half a foot before it warmed a bit. Here is a shot there near sunset today.
The NW Avalanche Center even has a high avalanche danger out for tomorrow. First one this year?
The NW Avalanche folks have had plenty of time to repair instruments and complete advanced training this year.
And take a look at the 500 hPa weather map for this morning. A trough of low pressure over our region. Haven't seen that in a while.
But don't worry, the ridge from hell (actually from the tropics) is coming back with a vengeance.
A strong WARM front is right offshore and will move in tonight. To illustrate this, here is the forecast for 11 PM tonight of sea level pressure (solid lines), surface winds, and low-level temperatures. Look along the coast. You see the shift from SE to SW winds, a kink in the pressure lines, and a transition from cold (green) to warmer (yellow) temperatures...that is the warm front.