Tuesday was cloudy and somewhat milder AM, then colder PM with light – moderate snow falling from about 1200-1800. 2.2″ of snow fell, painting a beautiful winter wonderland outside of my balcony window (see featured image). Temps started out in the mid 30s in the AM/midday, then dropped to the freezing mark and just below during the snow, then dropped further through the 20s up to midnight observation time. Winds were light during the snow, but should start to howl on Wednesday with dangerous wind chills. 

The maximum temperature was 36.4° at 1222.

The minimum temperature was 20.8° at 2359.

Dew point temperatures ranged from a low of 15° @ 0000 up to a high of 32° @ 1321.

Relative humidity values ranged from a low of 57% @ 0000 up to a high of 94% @ 1643.

Barometric pressure ranged from a low of 29.81″ @ 1339 up to a high of 30.03″ @ 2358.

Tuesday had 0.14″ of melted precipitation. My January monthly total is now 3.58″ and is also my year-to-date total for 2019.

2.2″ of snow fell on Tuesday. My year-to-date snowfall is now 14.9″ with the seasonal total at 17.0″.

My current online data (except for rainfall/snowfall – use the cocorahs link shown below for that dataset) is showing regularly on Weather Underground. My data is posted there every 5 minutes. My ID is KMDROCKV200 and my station is called “Gardens of Traville.” Data is online, normally just about in real-time now as it is being updated on a 5 minute interval. The web address for my data on weather underground is: https://www.wunderground.com/personal-weather-station/dashboard?ID=KMDROCKV200

I contribute my precipitation data daily to CoCoRaHS as Rockville 2.8 WNW, Station ID MD-MG-115 on https://www.cocorahs.org/

Please remember that Weather Underground precipitation data reflects what is recorded automatically through the tipping bucket VP2 gauge, just as it does on WxLink 2.0. The tipping bucket has been producing erratic values at times so should not be used save for general precipitation timing. For example during our big snowstorm earlier this month the snow didn’t melt at all during the storm, and only started to record precipitation amounts a few days later when the sun and above freezing temperatures started to melt the snow.

I actually use the data I post to CoCoRaHS from my 4 inch CoCoRaHS gauge I read manually as my “official” precipitation total each day. I also use a snow stake outside my balcony window to get an idea on how much snow has fallen (while it is snowing) and how much snow is on the ground.

On Wednesday clouds should persist with some chance of a passing snow shower or flurry, high temps around the freezing mark but with colder wind chills as strong winds develop as the day progresses and by late evening air temps will drop into the single digits with wind chills dropping below the zero mark. 

Thursday, very cold temps/wind chills continue but slowly wain towards evening. High temps will be in the low-mid 20s, lows in the teens. Sunny skies will at least warm the heart at times when the wind starts to slack off as we approach evening. 

Friday should moderate some with highs around 30°, lows in the lower 20s with variably cloudy skies and possible light snow showers or flurries at times.

Saturday and Sunday will moderate some more, with highs around 40° on Saturday and low 50s on Sunday and lows in the 20s on Saturday and mid 30s on Sunday under partly cloudy skies.

Midnight Tuesday night found the temperature at 20.8°, relative humidity 83%, pressure rising at 30.03″ and the dew point at 16.5° under partly cloudy skies.

Currently at 0650 the temperature is 12.9° under clear skies, relative humidity at 88%, barometric pressure steady at 30.01″, and the dew point at 10°.

Good morning from the Snowywalrus on this cold Wednesday. (Make sure you note today’s attached image, taken about 1730 EDT Tuesday of the snowy scene out from my balcony.)