\ ˈvȯg How to pronounce vog (audio) , ˈväg\

Definition of vog

: air pollution caused by volcanic emissions

Examples of vog in a Sentence

Recent Examples on the Web

This will direct hazardous vog to southern and western areas of the Big Island. Doyle Rice, USA TODAY, "There's a code red for Hawaii volcano because falling ash, vog could harm humans, aircraft," 16 May 2018 Authorities have been trying to persuade residents to wear filter masks to protect them from ash fall and to avoid areas where vog and laze may be present. Trevor Hughes, USA TODAY, "Hawaii lava flow destroys 12 more homes as Kilauea volcano continues exploding," 29 May 2018 If trade winds become lighter as predicted later this week, vog could pool northward over parts of the island by Friday, the weather service says. And Jason Hanna, CNN, "Explosive eruptions added to list of fears for Hawaii residents," 10 May 2018 The National Weather Service says vog could become widespread on the Big Island Thursday afternoon through Friday night. Angela Fritz, Washington Post, "Harmful acid rain in Hawaii? Probably not. The clouds of sulfur dioxide are much worse.," 10 May 2018 Scientists say higher sulfur dioxide emissions recorded at the volcano's vents in recent days are creating the potential for heavier than usual vog, or volcanic smog. NBC News, "Hawaii Volcano: First 'laze,' now 'vog?'," 29 May 2018 On top of lava, ash clouds and plumes of deadly laze (lava and haze), officials are also warning about vog, or volcanic smog. Katherine Lam, Fox News, "Fast-moving Hawaii lava prompts evacuations, covers well on geothermal plant property," 28 May 2018 The vog's sulfuric acid droplets would fall, too -- thus, acid rain. Jason Hanna, CNN, "Volcanic ashes. Acid rain. And now massive boulders? All the calamities Hawaii is facing," 10 May 2018 At high concentrations, vog can cause headaches and irritation to the lungs and eyes, according to the University of Hawaii at Hilo. Dakin Andone, CNN, "Hawaii residents scrambling for masks the government says won't help them," 13 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'vog.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of vog

1969, in the meaning defined above

History and Etymology for vog

volcanic + smog

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Last Updated

2 Sep 2019

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The first known use of vog was in 1969

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one from the Upper Peninsula of Michigan

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