Clear and windy

Good morning Augusta.

We remain under a wind advisory until 8 tonight.

This morning it is clear. High of 30F with a windchill as low as -8F. Windy. Winds from the WNW at 15 to 25 mph with gusts to 40 mph.

Tonight it will be clear in the evening, then partly cloudy. Low of 10F. Winds from the West at 5 to 15 mph with gusts to 30 mph.

The readings from my own instruments are:

The humidity is 54% with a Dew Point of 0.4ºF and a wind chill of -2.2ºF.

The temperature is 14.0ºF.

We have West Southwest winds between 6.5 MPH and 17.3 MPH.

Our Barometric pressure is 29.53/HPA 1000.0 and rising with a weather graphic indicating sun.

The UV rating is 0 out of 16, sunset will be at 5:12 PM with Moon Rise  at 10:49 a.m. and the moon phase is in the first quarter.

For the pilots out there: Raw METAR is –

METAR KAUG 181153Z AUTO 29020G33KT 10SM CLR M12/M20 A2957 RMK AO2 PK WND 28038/1142 SLP021 T11171200 11089 21117 51028

Visibility is 10.0 Miles/16.1 Kilometers and is otherwise pretty clear.

We have had about 3wo inches of snow  here in the past 24 hours.

During yesterdays storm the barometric pressure here in Augusta dropped to a remarkable low of 29.08, and that is pretty darn low.

So what is considered "Normal" barometric pressure?

What I found online from a post back in December of 2012 to answer the question is that Normal barometric pressure at sea level is 29.92 inches of mercury. Any pressure reading higher is considered higher pressure than normal, anything lower is considered lower pressure.

In terms of meteorologists, low pressure that is significant is below 29.50" and above 30.50" is considered significant high pressure. 

Also, what about HPA? Our HPA here in Augusta is in the 990's right now, down from a normal reading of approx. 1011 or so.

Most everyone knows about Barometers and barometric pressure, but what does "HPA mean? When I post my weather readings I will post the barometric pressure in the same string as the HPA.

From an online source: hPa - Hectopascal Pressure Unit

Hectopascal is a 100x multiple of the Pascal which is the SI unit for pressure. The Hectopascal is the international unit for measuring atmospheric or barometric pressure. 1 Hectopascal equals 100 Pascals.

Due to its low value the Hectopascal is ideal for use as a measure of atmospheric pressure and other low gas pressures such as air flow differentials in air conditioning systems or wind tunnels.

One Hectopascal is exactly equal to One Millibar and although the scientific community has officially adopted the Hectopascal in preference to the Millibar, the Millibar is still used extensively throughout the world due to the proliferation of its use historically.