Re: Leave them alone for 10 days question, confirmation
Walt, you are correct on the influences on the weather here, minus a few. as if they where not already enough. We are also in what is called the "Shadow" of the Sierra mountain range. What this means is that as the air moves in from the pacific it must rise over this range. this results in the moisture condensing on the western side of the mountains and that is where the rain falls we are about 10 miles from them on the eastern side. By the time this air reaches us it is bone dry and we end up getting very little rain. this is actually one of the primary causes of the conditions in Death Valley. We are actually only a couple of hours north of that valley.
It got to over 100 here yesterday and this morning it is 59 degrees and still falling. This is because as that air moves in from the pacific it pushes the air in the mountains at an 8000 foot elevation down on top of us. as the day progresses the air moving over the mountains warms and still pours down on top of the earlier cooler air. This actually creates an inversion where warmer air is actually setting on top of cooler air and trapping it in the valley where we are. This trapping of air can last for days and actually causes quite serious air quality issues here in the city. The overall effect is this city has something very much like a giant air conditioner that comes on every night. This is great if you like the temp in the 60's . Me I am more of an 80's type so it does not make me happy. The mild winters make up for it to some degree though. I was born in the mid west and now very well what a 10 below morning feels like. No thanks we head indoors at 30 degrees here.
Significant Minority vs Insignificant Majority, 20% of causes produce 80% of the effects.