Cloudy, light rain early AM (0.18″; 0000-0500 approx), then gradual clearing the rest of the AM, partly cloudy, milder in the afternoon, then temperatures falling off again in the evening. After low temps in the mid 30s, high temperatures reached the mid 40s in the afternoon well after the rain cleared out, then fell off into the mid 30s almost to the freezing mark by midnight observation time. 

The maximum temperature was 46.6° at 1159.

The minimum temperature was 33.7° at 2359.

The dew point temperatures ranged from a high of 39° @ 0838 down to a low of 22° @ 2235.

The relative humidity values ranged from a high of 96% @ 0807 down to a low of 54% @ 1334.

The barometric pressure ranged from a low of 29.75″ @ 0336 up to a high of 30.45″ @ 2354.

Monday had 0.18″ of precipitation. My February monthly total is now 1.86″ with my year-to-date total at 5.44″ for 2019.

No snow/sleet fell on Monday. My year-to-date snowfall is still 16.7″ with the seasonal total at 18.8″.

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 except for general precipitation timing. For example during our big snowstorm back in mid-January 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.

Tuesday should be mostly sunny and dry with later PM increasing clouds, highs around 40° with lows in the mid-upper 20s this morning.

Wednesday should be cloudy and cold with morning snow changing to a mix by mid-day, and then rain by late afternoon/evening, with highs in the mid 30s and lows in the low 30s. WINTER STORM WARNING has been posted for 3-5″of snow in my immediate area, mostly falling the AM hours till around midday.

Thursday should be partly cloudy and milder. Highs should reach the low 50s, lows around the freezing mark.

Friday should be cloudy and cooler. High temps should be in the mid 40s with lows once again around the freezing mark.

Saturday looks cloudy and cooler with a good chance for rain with temps around 40°. Sunday looks cloudy and rainy during the earlier part of the day, but with partial afternoon sun temps could reach the mid 60s. 

Midnight Monday night found the temperature at 33.7°, relative humidity 63%, pressure rising at 30.45″ and the dew point at 22.4° under mostly clear, moonlit skies.

Currently at 0646 the temperature is 26.7° under mostly clear skies with some light cirrus scattered about, relative humidity at 61%, barometric pressure still rising at 30.61″, and the dew point at 15°. Lots of high pressure and dry air for the arriving storm to dislodge late today and on Thursday. There will be cold air damming with these conditions that will keep frozen precipitation in here for a while on Wednesday. 

Good early morning from this snowless walrus on this clear Tuesday. Look for snowy pictures tomorrow from the hopefully snowywalrus to mark our snowy Wednesday. Hope you had a great President’s Day weekend!  I started my NOAA career on the Tuesday after this long weekend (i.e. this morning which was 2/17/74) exactly 45 years ago!