Steep inversions are the rule this time of year in Interior Alaska, but this is not one of those times. The afternoon sounding reveals a more than 20C inversion, but it's quite gradual by Interior standards. Temperatures at typical residential hillside elevations are back down to around -30F this evening; it's only above about 2000' MSL that temperatures are near -10F.
One interesting feature of this sounding is in the lowest 100 meters, where the temperature is constant (jargon=isothermal). This is typical in ice fog.
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