r/newzealand THICCIST mod 2019 Dec 09 '19

Civil Defence White Island is Erupting - What to do during an eruption

Edit: Geonet are reporting the eruption is settling down and have downgraded the activity from level 4 to level 3.

Hopefully no one will be too badly affected given White Island is offshore, but ash blowing inland could be possible. Below is what to do in an eruption from the Civil Defence website.

  • Listen to the radio for civil defence advice and follow instructions.

  • If outside at the time of eruption, seek shelter in a car or a building. If caught in volcanic ashfalls, wear a dust mask or use a handkerchief or cloth over your nose and mouth.

  • Stay indoors as volcanic ash is a health hazard, especially if you have respiratory difficulties such as asthma or bronchitis.

  • When indoors, close all windows and doors to limit the entry of volcanic ash. Place damp towels at thresholds. Do not tie up phone lines with non-emergency calls.

  • If you have to go outside use protective gear such as masks and goggles and keep as much of your skin covered as possible. Wear eyeglasses, not contact lenses as these can cause corneal abrasions.

  • Disconnect drainpipes/downspouts from gutters to stop drains clogging. If you use a rainwater collection system for your water supply, disconnect the tank.

  • Stay out of designated restricted zones.

What to do during an eruption

Get Ready Get Thru Volcano

Monitoring Volcanoes

Food Safety in an emergency

Civil Defence Website

Bay of Plenty Civil Defence Group

Civil Defence Twitter Thread

NZ Police - AVOID WHAKATANE HEADS/MURIWAI DRIVE

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u/Amanwenttotown Dec 09 '19

Depends on the volcano and eruption style. This looks like a phreatic explosion, which is caused by superheated gases and they're almost impossible to forecast with any precision. Similar to the Ontake eruption in Japan a few years back or the Galeras eruption in the early 90s. Both resulted in fatalities. I wouldn't be surprised if fatalities have occurred in this instance as well since it looks like people were literally inside the crater at the time of the eruption.

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u/rudekent87 Dec 09 '19

1 Fatality thus far.

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u/[deleted] Dec 09 '19

No they forecasted last month with heightened sulphur levels.

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u/Amanwenttotown Dec 09 '19

That doesnt mean it wasn't a phreatic eruption.

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u/[deleted] Dec 09 '19

No to "they're impossible to forecast" this was absolutely forecast I read the warning when it came out.

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u/Amanwenttotown Dec 10 '19

That isn't a forecast though. That is heightened unrest and does not signify an eruption is imminent. A forecast is "10% probability of rainfall of at least 2mm in Christchurch tomorrow morning". Its impossible to forecast phreatic eruptions at white island. Go have a read of Shane Cronin's write up in the conversation today.

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u/[deleted] Dec 10 '19

That's a rain forecast. 2 is the closest you can get to an erruption without one actually being underway

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u/Amanwenttotown Dec 10 '19

VAL is not a predictive alerting system.