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Showing posts from October, 2020

#MEwx A description of the differences between weather watches, warnings and advisories

Watch vs. warning vs. advisory - what's the difference? Mr. Wayne Mahar published the following back in 2017, and it’s logical and simple to understand. With thanks to his writing, I’m reproducing it here for your information. Warning, Wind Advisory, Freezing Rain Advisory| we TMve heard all of these before and will hear them again. So which of these should have us taking life saving measures and which should we all but ignore? Well, a lot of the time it comes down to whether it is an Advisory, a Watch or a Warning. No matter what the actual weather you are dealing with is, here is the basic rule of thumb: WATCH essentially means a chance this condition will happen and usually covers a large geographical area for a lengthy time period. WARNING means the said weather is already occurring or is likely to occur and to take proper protective measures. Warnings are usually issued for much smaller geographical areas and usually for shorter more definite time periods.

#MEwx Colder, sun with more cold tonight

Good Morning Augusta This morning we have sunny conditions with highs in the lower 40s with light and variable winds. Tonight we'll have mostly clear skies with lows in the upper 20s. Winds will be light and variable, becoming south around 10 mph after midnight. The readings from my weather instruments are: Our outdoor temperature is 23.7°F, the humidity is 71% the Dew point is 15.6°F with a wind chill of 23.7°F. The wind direction is Northwest between 0.0 MPH and 0.2 MPH. The Relative pressure is 30.35, the Absolute pressure is 30.15 and rising with a weather graphic indicating sun. If you want to see real-time instrument readings from my personal weather station click Here . That will take you directly to my weather station. Visibility is 10.0 miles/16.1 Kilometers with thick overcast skies again this morning. The UV rating is  1 out of 16, The moon is 99.9% illuminated, the moon phase is    Waning gibbous, Sunrise is 7

#MEwx What's the difference between freezing rain and sleet?

What’s the difference between Freezing Rain and Sleet? Both freezing rain and sleet occur by the same general process: liquid raindrops in a layer of warm air well above the surface fall into a layer of freezing air hugging the ground.  The difference between these two wintry precipitation types depends on the thickness of the layer of freezing air.   Freezing rain occurs when the layer of freezing air is so thin that the raindrops do not have enough time to freeze before reaching the ground.  Instead, the water freezes on contact with the surface, creating a coating of ice on whatever the raindrops contact.   Sleet is simply frozen raindrops and occurs when the layer of freezing air along the surface is thicker.  This causes the raindrops to freeze before reaching the ground.    Why are Freezing Rain and Sleet Dangerous? Both of these wintry precipitation types are hazardous for travelers.  With either type, the ice can create slick spots on roadways, causing m

#MEwx Missing temp readings

Our outdoor temperature is 31.6°F, the humidity is 51% the Dew point is 15.6°F with a wind chill of 27.3°F.  

#MEwx Cold, windy and rainy today

Good Morning Augusta This morning we have mostly cloudy skies with highs in the upper 30s. North winds around 10 mph gusting to 25 mph. Tonight we'll have mostly clear conditions with lows around 20°F. Winds will be light and variable. The readings from my weather instruments are: Our outdoor temperature is °F, the humidity is % the Dew point is °F with a wind chill of °F. The wind direction is East between 9.3 MPH and 10.9 MPH. The Relative pressure is 29.83, the Absolute pressure is 29.63 and steady with a weather graphic indicating Clouds/rain/snow. If you want to see real-time instrument readings from my personal weather station click Here . That will take you directly to my weather station. Visibility is 10.0 miles/16.1 Kilometers with thick overcast skies again this morning. The UV rating is  0 out of 16, The moon is 98.7% illuminated, the moon phase is   a FULL MOON, Sunrise is 7:14 am↑ 109° East, Sunset is 5:30 pm

#MEwx What the heck is an "Inverted Trough" in a weather forecast?

Recently our local weather forecaster on TV has used the term “inverted trough” a few times and I didn’t know what that term means. So, I looked it up. The explanation is below, and I found it on a real informative web site that you might want to look at. I’ve copied the text below, but the pictures, as you may expect, are much better than a thousand words. The web site is: https://www.theweatherprediction.com/habyhints/126/ “WHAT IS AN INVERTED TROUGH?” METEOROLOGIST JEFF HABY In the mid-latitudes of the Northern Hemisphere a Trough is usually seen as a southerly bulge in the height contours . The lowest heights are generally located to the north of the trough. In an inverted trough situation, the height contours bulge to the north. This is more common in the tropical regions where regions of low pressure ride south of a mid-latitude high pressure but can happen in the mid-latitudes when low pressure is south of high pressure. An inverted trough bulges to the nor

#MEwx Cold, wet and downright gloomy

Good Morning Augusta This morning we have cloudy skies with areas of fog. A chance of rain this afternoon and highs in the mid 40s with light and variable winds. Tonight we'll have rain likely during evening hours and cloudy with a chance of snow. Little or no snow accumulation, lows in the upper 20s with north winds 10 to 15 mph gusting to 25 mph. The readings from my weather instruments are: Our outdoor temperature is 36.9°F, the humidity is 97% the Dew point is 36.1°F with a wind chill of 36.9°F. The wind direction is Northwest between 0.0 MPH and 0.2 MPH. The Relative pressure is 29.84, the Absolute pressure is 29.64 and falling with a weather graphic indicating rain/snow. If you want to see real-time instrument readings from my personal weather station click Here . That will take you directly to my weather station. Visibility is 10.0 miles/16.1 Kilometers with gloomy and overcast skies. The UV rating is  0 out of 1

#MEwx Calculating snow depth to inches of rainfall

Snow to Water Ratios The amount of snow from a storm can look impressive when it covers your house and cars, but if you melted the snow you would discover that very little water is actually involved. The 'snow to ice ratio' or Snow Ratio expresses how much volume of snow you get for a given volume of water. Typically a ratio of 10:1 (ten to one) means that every 10 inches of snowfall equals one inch of liquid water. For example: Problem 1 - During a winter storm called 'Snowmageddon' in 2010, the Washington DC region received about 24 inches of snow fall. If this was dry, uncompacted snow, about how many inches of rain would this equal if the Snow Ratio was 10:1 ?   Answer: 24 inches of snow x (1 inch water/10 inches of snow) = 2.4 inches of   Problem 2 - The Snow Ratio depends on the temperature of the air as shown in the table below: Temp (F) 30o   25o   18o   12o   5   o   -10o   Ratio 10:1 15:1 20:1

#MEwx Cold and rain or snow maybe both.

Good Morning Augusta This morning we have a brilliant orange sunrise, some scattered snow showers and mostly cloudy skies with scattered rain showers. Highs will be in the lower 40s with light and variable winds. Chance of precipitation 50 percent. Tonight we'll have mostly cloudy conditions during evening hours, becoming partly cloudy. Lows in the mid 30s with light and variable winds. The readings from my weather instruments are: Our outdoor temperature is 31.8°F, the humidity is 67% the Dew point is 22.1°F with a wind chill of 31.8°F. The wind direction is North Northwest between 0.0 MPH and 2.5 MPH. The Relative pressure is 30.09, the Absolute pressure is 29.89 and falling with a weather graphic indicating rain/snow. If you want to see real-time instrument readings from my personal weather station click Here . That will take you directly to my weather station. Visibility is 10.0 miles/16.1 Kilometers with very overcast skie

#MEwx mild temps with sun and some clouds

Good Morning Augusta This morning we have partly sunny skies with highs in the upper 40s. Winds are northwest around 10 mph. Tonight we'll have mostly cloudy conditions during evening hours, then clearing. Lows in the mid 20s with light and variable winds. The readings from my weather instruments are: Our outdoor temperature is 43.7°F, the humidity is 98% the Dew point is 43.2°F with a wind chill of 43.7°F. The wind direction is North Northeast between 2.1 MPH and 3.9 MPH. The Relative pressure is 30.02, the Absolute pressure is 29.82 and steady with a weather graphic indicating sun. If you want to see real-time instrument readings from my personal weather station click Here . That will take you directly to my weather station. Visibility is 10.0 miles/16.1 Kilometers with partly sunny skies. The UV rating is  1 out of 16, The moon is 85.1% illuminated, the moon phase is  waxing gibbous, Sunrise is 7:10 am↑ 107° East, Suns

#MEwx Cold and rainy all day today

Good Morning Augusta This morning we have clouds with a 50% chance of rain showers. Highs in the lower 40s with light and variable winds. Tonight we'll have showers, mostly during evening hours. Lows in the upper 30s with light and variable winds, becoming northwest around 10 mph after midnight. of rain The readings from my weather instruments are: Our outdoor temperature is 34.2°F, the humidity is 71% the Dew point is 25.7°F with a wind chill of 30.9°F. The wind direction is North Northeast between 3.6 MPH and 4.9 MPH. The Relative pressure is 30.36, the Absolute pressure is 30.16 and steady with a weather graphic indicating clouds/rain. If you want to see real-time instrument readings from my personal weather station click Here . That will take you directly to my weather station. Visibility is 10.0 miles/16.1 Kilometers with low-hanging overcast. The UV rating is  0 out of 16, The moon is 77.7% illuminated, the moon ph

#MEwx Colder temps with some clouds

Good Morning Augusta This morning we have mostly sunny skies with highs in the upper 40s. Winds are North northwest around 10 mph. Tonight we'll have mostly clear conditions, becoming partly cloudy. Lows in the upper 20s with light and variable winds. The readings from my weather instruments are: Our outdoor temperature is 34.9°F, the humidity is 71% the Dew point is 26.4°F with a wind chill of 34.9°F. The wind direction is North Northwest between 2.0 MPH and 4.9 MPH. The Relative pressure is 30.12, the Absolute pressure is 29.92 and rising with a weather graphic indicating sun. If you want to see real-time instrument readings from my personal weather station click Here . That will take you directly to my weather station. Visibility is 10.0 miles/16.1 Kilometers with a brilliant orange/red sunrise. The UV rating is  1 out of 16, The moon is 69.0% illuminated, the moon phase is  waxing gibbous, Sunrise is 7:07 am↑ 107° Eas

Weather

Good Morning Augusta This morning we have mostly sunny skies with highs in the upper 40s. Winds are North northwest around 10 mph. Tonight we'll have mostly clear conditions, becoming partly cloudy. Lows in the upper 20s with light and variable winds. The readings from my weather instruments are: Our outdoor temperature is 34.9°F, the humidity is 71% the Dew point is 26.4°F with a wind chill of 34.9°F. The wind direction is North Northwest between 2.0 MPH and 4.9 MPH. The Relative pressure is 30.12, the Absolute pressure is 29.92 and rising with a weather graphic indicating sun. If you want to see real-time instrument readings from my personal weather station click Here . That will take you directly to my weather station. Visibility is 10.0 miles/16.1 Kilometers with a brilliant orange/red sunrise. The UV rating is  1 out of 16, The moon is 69.0% illuminated, the moon phase is  waxing gibbous, Sunrise is 7:07 am↑ 107° Eas