The correlation is this...
...nothing worse than a sprinkle mid afternoon after a drought!!!
This is why the LA Freeway is a prob from time to time (rode it many times on a motorcycle).
The steam only suspends the particles (as opposed to a full on wash), with all the fires and other problems it's not a wonder that you are seeing elevated reads...
Take precautions for the next few!!!!!
Post the reads and I'll (we'll all) take a look at them...
I don't think (my opinion only) that you are in trouble on this...
I would take precautions if I were you! Simply because we can!!!
Simple caution...
Hoping for a real rain at any time!
I'd like to jump in that glass of ice water (carlsbad) now!!!
PLEASE send me your reads so we can look at them further and I will get back too you!
Promise...
http://www.socalsurflessons.comhttps://youtu.be/ktJ2Gn9XhzM?t=21m23s