Equinox-2025.September.20 @ 18:20Z(23) days until summer is “all Pau”.
Will you too miss summer or perhaps relish the arrival of Fall and Winter? Personally, Winter refreshes my appreciation of this beautiful world we live in. The celestial universe is so incredibly interesting if you take a little time and look at the sky once in a while. One significant WX event over the eastern Pacific (as the earth tilts away from the sun) is the Jet Stream starts to speed up. This can create EXTREMELY hazardous turbulence and wind shears in Oregon (and other places along the route). I have witnessed the extreme effects of microbursts, literally uprooting Douglas-fir and ejecting the trees 25 yards. And we all know the WX forecasts on the coast are not accurate generally.
Might be a good idea to start thinking about modifying your safety equipment (oil viscosity, engine preheat procedures) for colder days. In Hawaii seasonal temps are generally negligible at sea level (we run W100 all year generally), but The PNW is a totally different seasonal transition! Good idea to wash your engine thermo blanket before hand so it does not smell up the cabin after sitting around in the hanger all summer.
Fun question: you are standing on the equator during the equinox. What is the declination of the Sun?
A) 23.5 degrees tropics
B) 25.00” 00.00’
C) 90’00”
D) There is no declination due to the ambiguity
Below video is a summary of local PNW in Summer (from archives). Note the atmospheric inversion = smooth air:
Title:
Love in an Elevator: