Its snowing out there

Good morning Augusta.  

This morning it is Mostly cloudy with a chance of snow in the morning, then overcast with a chance of snow. High of 34F. Winds from the North at 5 to 10 mph. Chance of snow 40%.

Tonight it will be partly cloudy with a chance of snow. Low of 21F. Winds less than 5 mph. Chance of snow 30% with accumulations up to 1 in. possible.

The readings taken from my own weather instrumentation are:

A relative humidity of 76% with a Dew Point of 19.9ºF and a wind chill of 26.6º F.    

The temperature is 26.6ºF.

Presently we have   North Northeast winds puffing between 4.7 MPH and 5.4 MPH.

Our Barometric pressure is 30.14/HPA 1020.6 and rising with a weather graphic indicating sun.

The UV rating is 0 out of 16, sunset will be at 4:02 PM with Moon Rise at 4:14 p.m. Eastern Standard Time, and the moon phase is a full moon.

For the pilots out there: Raw METAR is –

METAR KAUG 281253Z AUTO 02006KT 10SM OVC050 M03/M08 A3023 RMK AO2 SLP244 T10331083

Visibility is 10.0 miles/16.1 Kilometers with clouds and overcast down to 5,000 ft / 1524 m.

We have had a dusting of snow but no rain in this area in the past 24 hours.

A few words about wind and what wind direction really means.

Q: Are southwest winds coming from the southwest or blowing toward the southwest?

A: Wind direction is given as the direction from which it is blowing. Therefore, a southwest wind is blowing from the southwest and toward the northeast. While winds are always named for the direction of the source, confusion arises when directions are used in other contexts. For example, a "southerly" wind means that it is blowing from the south, but a ship that takes a "southerly" course is moving toward the south.

On the other hand, prevailing Winds are those winds which are formed as a result of various circulation patterns of the globe and they are a notable feature of weather phenomenon .

Formation of Prevailing Winds :

Prevailing winds are caused due to the unequal heating of the surface of the Earth. As the hot air goes up, cooler air moves to substitute it. In this way wind is formed. On reaching the Earth's troposphere the wind takes an orbital course around the Earth. The differences in heating gives rise to air circulations which flow from the equator to the poles in the upper parts of the atmosphere and vice versa in the lower parts.

Path of Prevailing Winds :

Prevailing winds generally blow from one region having high pressure to another which has low pressure. They do not follow the direct route from north to south between the belts of pressure. This happens because of the deflection of airflow by Coriolis force.

Types of Prevailing Winds :

Trade Winds : In olden days, sailors heavily depended on these prevailing winds to sail from Europe to America. The northeast trade winds are found between the latitudes of 30 to 0°N and the southeast trade winds occur between 0 to 30°S latitudes.

Westerlies : These prevailing winds are found below the Ferrel circulation cell in the mid latitudes.

Polar Easterlies are prevailing winds that are permanent cold winds which form a part of the polar circulation cell. These winds can mix with the Gulf Stream to form very violent and strong tornadoes and thunderstorms.

Jet Streams are prevailing winds which are very swift currents of the higher level.

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