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ash fall

noun, Geology
1.
a rain of airborne ash resulting from a volcanic eruption.
2.
the deposit produced by such an event.
Also, ashfall.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for ash fall
  • Forty-seven were rescued from the south side of the volcano, where there was neither a blast surge nor a heavy ash fall.
  • Such activity would result in far-reaching eruption clouds and ash fall.
  • Pyroclastic flows and extensive ash fall are usually produced during these events as well.
  • Everyone in an ash fall zone will be exposed to the effects of volcanic ash.
  • In the event of an eruption, please submit reports of ash fall using our storm reports link.
  • Children should avoid running or strenuous activity during ash fall.
  • ash fall during an actual eruption will depend on wind direction and total volume erupted and may deviate from these examples.
  • Many small holes and cracks developed in the ash fall, which let gas and steam escape from heated ground below escape.

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