There was a condenser explosion at a refinery outside Beaumont this week (edit: TPC group refinery in Port Neches, Wed thru Thanksgiving morning. Primarily 1,3-butadiene). Probably related, either directly or because of surplus burn off.

https://www.shreveporttimes.com/story/news/nation/2019/11/28...

Worth checking it out just for the video.

Edit: Yep- they reinstated the evacuation order yesterday and canceled school for the week, after attempting to resume classes on Tuesday.

https://m.chron.com/news/article/Shelter-in-place-order-issu...

"The first explosion around 1 a.m. Wednesday sent three workers to hospitals – they were treated and released that day – and blew out windows and doors in homes and businesses for miles. At least five residents were injured, mostly by shattered glass."

It's 5 hours later, so the data may be different but the largest red blob I see right now is in the region of the Gulf Coast near Corpus Christi. Since it's showing PM 2.5 readings, I suppose it could be a strong offshore wind picking up dust/sand from the long barrier island there.

Saw that too and am curious as well. Uneducated guess is either fires or refineries.

The dark red blob in Texas is basically San Antonio.