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Met Mailbag: Converting Rain To Snow

POSTED: 9:49 am PDT July 6, 2006
UPDATED: 11:08 am PDT July 6, 2006

Kristen Cornett
Met Mailbag is your chance to have a Weather Plus Meteorologist answer your weather question. Each Thursday, our NBC Weather Pulse Blog will publish the answers to questions you send us. This week's question was answered by NBC Weather Plus Meteorologist Kristen Cornett.

Question: I would like to know about the recent floods. What if it was December and the temperature was 28 degrees outside? What would the precipitation totals be if it were snow instead of rain that fell in the flooded states?
Submitted by Bob Baker, Batesville, Arkansas.

Answer: Well Bob, cold air doesn't hold as much moisture as warm air. So the difference in precipitation totals doesn't translate that easily.

If it were 28 degrees outside, the air would not have been nearly as moist to start with. But generally speaking, one inch of rain equals 10 inches of snow.

If it's a really dry snow though, totals could get as high as 20 inches while a really wet snow would be more like 5 inches.

Thanks for your question, Bob!

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