I hope to finally get caught up on my daily climate data ramblings with this post, covering most of this current week. All the usual features will return with this post. Please bear with me and if I make an unintentional error please forgive me.

Monday started out in the deep freeze with the coldest day by far so far this winter season. Temperatures remained in the teens all day and brisk NW winds brought the wind chill down towards the zero mark despite sunny skies. Dew points went below zero for the first time this season. Snow on the ground was basically reduced to trace amounts here and there and artificially gathered piles of shoveled/plowed snow. 

Monday, January 21

The maximum temperature was 19.5° at 1519.

The minimum temperature was 12.1° at 0746.

Dew point temperatures ranged from a low of -3° @ 0929 up to a high of +4.3° @ 2357.

Relative humidity values ranged from a low of 42% @ 1542 up to a high of 63% @ 2347.

Barometric pressure ranged from a low of 30.08 @ 0027 up to a high of 30.63″ @ 2324.

Monday had no precipitation. There was a trace of snow left on the ground by observation time.

Tuesday started out ion another frigid note with the early AM low in the lower teens, but with moderating/lessening winds raising the wind chill temps, the sunny skies worked on getting the high temperature almost to the freezing mark (31.7°) by the mid-afternoon. Milder evening temps only dropped down into the upper 20s by observation time.  There was barely a trace of snow left on the ground by the end of the day.

Tuesday, January 22

The maximum temperature was 31.7° at 1522.

The minimum temperature was 12.6° at 0608.

Dew point temperatures ranged from a low of 4° @ 0000 up to a high of 14° @ 2357.

Relative humidity values ranged from a high of 72% @ 0630 down to a low of 33% @ 1535.

Barometric pressure ranged from a high of 30.78″ @ 1022 down to a low of 30.54″ @ 2327. Note: 30.78″ is the highest reading of the year so far. Actually it is the highest reading since 30.83″ was recorded back in February 13, 2018. 

Tuesday had no precipitation. My January monthly total is 2.36″ and also is my year-to-date total for 2019.

My year-to-date snowfall is 12.7″ with the seasonal total at 14.8″. There was barely a trace of snow on the ground at midnight obs time

Wednesday started out briefly with mins in the upper 20s just after midnight but temps rose overnight into the lower mid 30s by sunrise. Further warming under increasingly cloudy skies rose the daily high temperature into the upper mid 40s by mid-afternoon. Temps didn’t drop much at all during the evening, only reaching the lower mid 40s by midnight observation.  The barometric pressure fell steadily all day, getting under standard atmosphere levels by the late evening. Quite cloudy skies by observation time.  There was no more naturally occurring snow to be found in my immediate area. 

Wednesday, January 23

The maximum temperature was 47.6° at 1453.

The minimum temperature was 28.5° at 0000.

Dew point temperatures ranged from a low of 11° @ 0441 up to a high of 39° @ 1439.

Relative humidity values ranged from a low of 42% @ 0456 up to a high of 83% @ 2358.

Barometric pressure ranged from a high of 30.54″ @ 0000 down to a low of 29.88″ @ 2352. 

Wednesday had no precipitation. My January monthly total is still 2.36″ and also is my year-to-date total for 2019.

My year-to-date snowfall is 12.7″ with the seasonal total at 14.8″. There was no more naturally occurring snow left on the ground in the vicinity of my apartment. 

Thursday was cloudy, rainy and increasingly mild in the AM hours, rain (1.18″) falling from about 0200-1400, maxing out around 10 AM in heavier showers. Temperatures soared well up into the upper mid 50s by mid-morning. By mid-afternoon the rain moved off, skies started to clear, and temperatures began to fall. They fell into the lower mid 30s but due to clouds returning towards evening (without further precipitation) the temps stopped falling, and overnight into Friday have remained above freezing.  

Thursday, January 24

The maximum temperature was 57.8° at 0446.

The minimum temperature was 33.2° at 2316.

Dew point temperatures ranged from a high of 57° @ 0904 down to a low of 26° @ 1855.

Relative humidity values ranged from a high of 97% @ 0605 down to a low of 69% @ 1855.

Barometric pressure ranged from a low of 29.43″ @ 0947 up to a high of 29.93″ @ 2359. 

Thursday had 1.18″ of precipitation. My January monthly total is now 3.54″ and also is my year-to-date total for 2019.

My year-to-date snowfall is 12.7″ with the seasonal total at 14.8″.  

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. Partly cloudy with seasonably cold temps should persist through the weekend. A brief warmup early in the week with rain on Tuesday, temps rising well up into the 40s, but with a new “polar express” burst coming through the rest of the week with highs in the 20s, lows in the teens and wind chills once again heading down to the zero mark despite sunny, dry skies.

Midnight Thursday night found the temperature at 33.3°, relative humidity 75%, Pressure still rising at 29.93″ and dew point down to 26.2° under cloudy skies.

Currently at 0601 the temperature has only dropped down to 33.0° under continued cloudy skies, relative humidity at 71%, barometric pressure still rising at 30.02″, and the dew point falling off slightly at 24°’.

Good very early morning from the Walrus on this cloudy, colder Friday morning. Whew, I think I am finally all caught up and all of my usual features restored now… My “overworked” camouflaged rain gauge in its unique holder built by friend Marty and placed into operation early last year is today’s featured image.