![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjYuwiV7M0HidvHaktIQNRND_dJJ9PTmuQrB-IN2l1zr7X8ZICSzHRWMtoGDmL7h5l2k6RHjc6Y5NGo8MclkexxN3h3ua6zzcXZgVwQ3RpMP1a6rP9xv1mDl07p7mpRaOFDTUIVdQjd4Q/s320/Jan_03_2012_RAOB.jpg)
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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