Yep...it's back. Thickest layer is currently sitting at about 4km/2.5mi above the surface according to the NASA/GSFC MPLNet lidar. No surface air quality effects right now: https://t.co/a99bhUtwrM https://t.co/zxdpPAVXPP pic.twitter.com/8LjXVa9JNQ

— Ryan Stauffer (@ryans_wx) August 1, 2023