This post covers the weekdays of the most recently completed week as promised in my last post. My next post will hopefully catch me up with the last few days and our weekend rainstorm.

Monday started out cloudy and cold with a trace of snow falling the first few minutes of the day as our weekend storm moved off to the NE. The rest of the day was cold with clearing skies, temps only rising into the lower mid 30s in the mid afternoon then falling off after sunset into the mid 20s by the late evening for the day’s lowest temperatures. 

Monday

The maximum temperature was 32.9° at 1454.

The minimum temperature was 24.8° at 2304.

Dew point temperatures ranged from a high of 26° @ 0000 down to a low of 19° @ 1039.

Relative humidity values ranged from a high of 92% @ 0000 down to a low of 57% @ 1410.

Barometric pressure ranged from a high of 30.34″ @ 1011 down to a low of 30.22″ @ 2040.

Monday had a trace of precipitation and a trace of snow  There was 8″ of snow left on the ground by observation time.

Tuesday had clear skies and a bit milder high temps in the mid 30s after early AM lows in the lower mid 20s. Snow started to melt and streets and sidewalks were clear for traveling by car and foot.

Tuesday

The maximum temperature was 34.9° at 1314.

The minimum temperature was 23.4° at 0221.

Dew point temperatures ranged from a high of 26° @ 0926 down to a low of 21° @ 2359.

Relative humidity values ranged from a high of 92% @ 0234 down to a low of 69% @ 1243.

Barometric pressure ranged from a high of 30.28″ @ 0954 down to a low of 30.17″ @ 2352.

Tuesday had no precipitation.  0.97″ is my January monthly total and also my year-to-date total for 2019. My year-to-date snowfall is 11.5″ with the seasonal total at 13.6″. There was 5″ of snow on the ground at midnight obs time 

On Wednesday, after a chilly morning that dipped into the teens (barely) the sun warmed things up to around the 40° mark and more snow melted down to 3.5″ on the ground by the end of the day. By midnight temps only dropped into the mid 30s. 

Wednesday

The maximum temperature was 39.5° at 1434 .

The minimum temperature was 19.7° at 0512.

Dew point temperatures ranged from a low of 18° @ 0223 up to a high of 31° @ 1334.

Relative humidity values ranged from a high of 93% @ 0630 down to a low of 66% @ 2218.

Barometric pressure ranged from a low of 30.13″ @ 0503 up to a high of 30.34″ @ 2323.

Wednesday had no precipitation.  0.97″ is my January monthly total and also my year-to-date total for 2019. My year-to-date snowfall is 11.5″ with the seasonal total at 13.6″. There was 3.5″ of snow on the ground at midnight obs time 

Thursday became cloudy and colder, with light snow falling between 0700-0200 (Friday), dropping the temps below freezing after a noonday high temp in the mid 30s. Snow on the ground increased slightly to about 4.0″ on the ground by the end of the day after most of the snow fell. 

Thursday

The maximum temperature was 35.9° at 1236 .

The minimum temperature was 30.9° at 2016.

Dew point temperatures ranged from a low of 23° @ 1132 up to a high of 30° @ 2115.

Relative humidity values ranged from a low of 62% @ 1132 up to a high of 94% @ 2312.

Barometric pressure ranged from a high of 30.40″ @ 1058 down to a low of 30.18″ @ 2358.

Thursday had 0.07″ of melted precipitation.  1.04″ is now my January monthly total and also my year-to-date total for 2019. There was 0.8″ of new snow falling on Thursday. My year-to-date snowfall is 12.3″ with the seasonal total at 14.4″. There was 4.0″ of snow on the ground at midnight obs time 

Friday started out foggy with light snow (0.4″) in the early AM. Skies cleared by the afternoon when temps warmed up into the low 40s by mid-afternoon. Temps remained mild in the mid 30s in the evening up to obs time. Despite the early AM light snow, the mild temps during the day and evening brought the snow on the ground down to about 2.0″ on the ground by the end of the day.  

Friday

The maximum temperature was 41.7° at 1532 .

The minimum temperature was 31.3° at 0000.

Dew point temperatures ranged from a low of 30° @ 0000 up to a high of 37° @ 1418.

Relative humidity values ranged from a high of 95% @ 0623 down to a low of 81% @ 1536.

Barometric pressure ranged from a low of 30.08″ @ 0621 up to a high of 30.23″ @ 2225.

Friday had 0.04″ of melted precipitation.  1.08″ is now my January monthly total and also my year-to-date total for 2019. New snowfall totalled 0.4″. My year-to-date snowfall is now 12.7″ with the seasonal total at 14.8″. There was 2.0″ of snow on the ground at midnight obs time 

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 last weekend’s snowstorm 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 as shown earlier in this post.

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. 

Good very early morning from the Walrus on this clear, very cold Monday morning. My next post will cover the most recently completed weekend. Another snowstorm picture from my courtyard is today’s featured image.