Is it possible or practical to predict vog? The Vog Measurement and Prediction Project (VMAP) is a feasibility study in which scientists will evaluate [are evaluating] whether vog forecasts are achievable and useful. Project collaborators are making the feasibility study available to the public through this Web site, but as an ongoing investigation, VMAP currently provides limited service and reliability. Thus, VMAP users should have no expectation of accuracy or timeliness, and project data should not be used for decision making purposes at this time. Comments and inquiries can be directed to the appropriate contact.

Vog is primarily a mixture of sulfur dioxide (SO₂) gas and sulfate (SO₄) aerosol. SO₂ (invisible) reacts with oxygen and moisture in the air to produce SO₄ aerosol (visible). SO₂ is expected to be the main problem in areas near the vent (Hawai`i Volcanoes National Park, Pahala, Na`alehu, Hawaiian Ocean View Estates) and SO₄ aerosol is expected to be the main problem at locations far from the vent (Kona and farther north and west).

Links

AIRNow Local Air Quality Conditions and Forecasts:

Hawaii Department of Health webpage:

USGS Hawaiian Volcano Observatory - Kilauea update:

Hawai`i Volcanoes National Park:

Hawaii Short Term SO₂ Index:

NOAA CMAQ effort:

American Lung Association:

Air Quality in Hawai`i Volcanoes National Park:

USGS Hawaiian Volcano Observatory - Vog FAQ:

US Department of Agriculture, Farm Service Agency has programs available to support farmers and can be accessed here: