Still in Wind Chill Advisory until noon

Good morning Augusta.

This morning it is clear, then partly cloudy. High of 14F. Winds from the WNW at 5 to 10 mph.

Tonight it will be mostly cloudy in the evening, then overcast with a chance of snow. Low of 0F. Winds less than 5 mph. Chance of snow 20%.

The readings from my own instruments are:

The humidity is 51% with a dew point of  -11.0ºF and a wind chill of 0.7ºF.

The temperature is 3.2ºF.

Our winds are West between 2.3  MPH and 4.6  MPH.

Our Barometric pressure is 29.92/HPA 1013.2 and rising with a weather graphic indicating sun.

The UV rating is 0 out of 16, sunset will be at 4:38 PM with Moon Rise  at 3:33 p.m. and the moon phase is waxing Gibbous.

For the pilots out there: Raw METAR is –

METAR KAUG 251253Z AUTO 28006G14KT 10SM CLR M16/M22 A3013 RMK AO2 SLP211 T11561217

Visibility is 10.0 miles/16.1 Kilometers with a great ceiling.

We have had no snow in the past 24 hours in this area.

What causes "Sea Smoke"?

Sea smoke, or arctic steam fog, is a cloud over the sea, which could otherwise be called fog, and is usually formed when very cold air moves over warmer water. The physics are in principle similar to lake-effect snow.

Evaporation from exposed water surface depends upon its vapor pressure. If the water temperature is greater than that of the nearby air, the evaporation continues faster than the air can absorb the water vapor, even though the cool air's relative humidity is 100%. This further evaporates immediately and re-condenses as visible fog, which rises up in convective currents. If the wind blows across cold icy areas like the Arctic, the breaks in the ice sheets where clear water is exposed, the water surface steams up into the air, producing fog.

The conditions required for such fog formation include not only low surface temperature but also a preexisting surface inversion of temperature to inhibit the rapid development of instability.