Vog Hazards Links


Halema’uma’u’s plume changes from day to day, and wind direction changes periodically. You can deduce where the plume will be by noting the wind direction; the National Weather Service provides a week-long forecast of wind conditions.

The best course of action is:

  1. Have a supply of materials readyfor future events (baking soda, dust masks, respirators, and an emergency evacuation kit)
  2. Plan where you would go (friends, relatives) in case the plume was so thick that your  health was threatened
  3. Keep apprised of current conditions at Halema’uma’u by visiting the USGS-HVO update page


NIOSH provides specific details about sulfur dioxide.

ATSDR answers questions about sulfur dioxide and its effect on human health.

ALAH American Lung Association of Hawaii has helpful suggestions for asthmatics.

Hawaii Volcanoes National Park provides current SO2 conditions.

Hawaii State Department of Health has a Vog FAQ site.