#CAwx

Crowdsourcing: Today's air quality in SoCal was poor (mainly ozone), despite recent reductions in tailpipe emissions due to #COVID19 measures. I know that personal care/cleaning products are (surprisingly!) substantial contributor

Fire weather update: relatively mild (near avg) temps will continue for a few more days across California. Calmer winds will result in poor air quality, as visible this AM. A

Vegetation moisture and flammability metrics to continue to be near or exceeding record levels for the time of year throughout NorCal. Particularly impressive is that vegetation is now at or

1/N One last weak gasp of the wet season as the westerlies make a show across the North Pacific... Next weekend a breakdown & removal of the long-standing Rex Block

A few thoughts (thread) on the upcoming lightning event in California. All models are showing the potential for at least isolated mixed wet/dry thunderstorms in central/northern California, which is obviously

Our new work on #ClimateChange & autumn wildfire risk in California, led by Michael Goss, is out today in (open-access) ERL. We find that climate change has already doubled the

I increasingly wonder why @NWS has not implemented public-facing fire weather index w/multiple gradations beyond simple "Red Flag." Differentiation between "marginal" & truly "exceptional" events would be p

Confidence increases regarding a significant offshore flow event late in the weekend - not just strong winds, but the very dry airmass with it. Comparing offshore gradients SFO-WMC. (1/4)2017 Wine

Extremely dry and easterly windy conditions will develop over the Cascades later today followed by a moderate event in the N Sierra Foothills, Sac Valley and N Bay Area, then

You could write an entire meteorology textbook just based on the phenomena visible from this afternoon's wild satellite imagery looking down at the American West. (Thread) #CAwx #WAwx #ORwx #COwx

Let's talk about this heat. [Yes... it's back.] (A Thread)Though today marks the 2nd Day of Meteorological Fall, the heat here in the Desert Southwest did NOT get the memo.