We will have some clearing, with mostly sunny conditions by evening for Independence Day!
Highs on Saturday will reach around 70 degrees, with clouds decreasing through the day. Partly-mostly clear at night, with temperatures in the mid-50s. Take a look at the simulated cloud cover model from UW. Mostly clear at 9 PM...staying that way through the night. Decent fireworks weather...
As always on the Fourth, the amount of “matter” in the atmosphere will dramatically increase from tomorrow night through Sunday morning, resulting in horrible air quality. That’s because of the huge amount of smoke from personal fireworks around our region. Here is a graph showing air quality in June and July 2019, from the Cliff Mass Weather Blog. Notice the HUGE spike from 7/4-7/5.
That spike is clearly from fireworks, and in some cases the spike in bad air quality is noticeable (and you smell smoke).
This year will likely be even worse. Due to the COVID-19 pandemic, many fireworks shows are canceled, resulting in a huge increase in sales of personal fireworks. Expect more fireworks and worse air quality this year.
Sunday will be mostly sunny and in the 70s, followed by the return of clouds and scattered drizzle by Tuesday...due to our old friend, the marine layer. I was at the ocean this past Monday, and I experienced the true marine layer...fog all day. (See my picture below).
You can barely see the waves...but the clouds lifted in the evening. Expect that in the interior as well.
Have a safe and happy Fourth!
No comments:
Post a Comment