![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGoPykWAJ0D2aNfh91pq15HEME9km44Kq6wIr07E_QInUN7bHV-pKPuAc7KExLZqIG-claKawtHD2LJUp-uVkMRxQwxIJb-jvt8iUzOlh1Z9Sf3_kMUwKHUT-FVYziHhmxvZWyUU4t9_I/s400/LATE_DAY_SURFING-+LRH-photo.jpg)
Sulfur dioxide levels reached hazardous levels yesterday afternoon, according to the National Park Service & USGS air quality monitors site.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhtVXAjQ41YEIJGN4DIORvLUwln-ZW0J4uPZortnWQBpMzEHxRvAoj-RHZ89RUuWHQveCpqlfj9NgPKtWBjxabDupyPg5iy3v4pKo_mKvCvt8BA_NcZ5jqMxbdsI1bAhaEoVyo4lpU2B-g/s400/AlertHistory_HAVO_OBS_01-22-11PM.bmp)
The dark purple & browns represents ppm SO2 over 5.0 -- very hazardous to humans. There is some widespread vog today, but not as intense as yesterday.
Here is the USGS deformation graphs as of 10:00 AM this morning. After three full days being flat-lined, we have a weak return of magma pressures being recorded.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh7iS-spLbflbZW_S09ZNE-z7VS5Zi3r_o4alz8QyLAc-fz4wBBiiu_BzU6lTNFiVWCPoG8mSblV0UOPQRZKzBjSbspHC8HEAeZMYY7P3RuYsrRFlGmt8zbOoaRI-oHaVFRytoOP1WKNHc/s400/D-+I+graph+Jan+23-10AM.bmp)
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