After heating things up to early-summer levels Wednesday, another chilly low pressure system will move into the region bringing gusty Thursday winds, scattered showers and thunderstorms starting Friday (and continuing through the weekend), and temperatures that will drop to 10-15 degrees below seasonal averages through Monday. Thursday winds could gust as high as 50 mph in the wind-prone areas, which could also cause areas of blowing dust across western Nevada.
Yesterday, I mentioned that particulate pollution is most prevalent in the winter months. There are several reasons for this. Particulate pollution usually requires strong inversions in order to become more concentrated, and those inversions are much stronger in the winter. Plus, smoke and road dust, the two most common forms of particulate pollution we get here in the Truckee Meadows, are generated in greater quantities in the winter, thanks to smoke from fireplaces and wood stoves, and road dust from sanding snowy roads.
The situation is much different in the summer, and that’s when another kind of pollution becomes an issue: ozone. Tomorrow I’ll tell you why something that can be good can also be bad.