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Insider Blog: Tracking frost potential and the science behind it

We've been talking about frost in the forecast all week, but what is the science behind the forecast?

High pressure sliding in out of the north tonight might just provide the right set up to leave frost across portions of the area early Wednesday morning.

This high will provide some of us with two things; calm winds, and clearing skies.

On a clear, calm night, heat escapes the surface and rises up into the atmosphere.

This allows the cold air and moisture to settle near the ground. When this air falls to the freezing mark, any available moisture will freeze on contact with vegetation.

If we see frost tomorrow morning, we'll be a little behind schedule as the average first frost for our area typically arrives in mid-to late-October.

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John Ross


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