Meteorology Monday (5-19-25): Frost
We often talk about how on clear nights, the heat that we got from the sun's radiation during the day can easily escape back to space when there are no clouds to keep it at the surface. This is known as radiational cooling, and is the key factor necessary for frost.
When air temperatures get into the upper 30s and winds are calm, the cooler, denser air sinks, creating a cooler, near freezing layer near the ground. When we have moisture in the air, the water molecules freeze onto the freezing surface, creating ice crystals, or frost.
An area-wide frost advisory is in place for the Twin Tiers because we are tracking the chance for each of these conditions to set up overnight. Take steps to prepare and protect your sensitive plants.
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