Wednesday got off to a mostly cloudy and cold start, with snow flurries falling lightly in the afternoon (nothing measurable) scattered about the region. Temperatures started out in the low 30s at midnight and held most of the day no higher than the mid 30s, then gradually lowered during the evening into the upper 20s well before observation time. 

The maximum temperature was 35.9° at 1454.

The minimum temperature was 28.9° at 2214.

Dew point temperatures ranged from a low of 21° @ 0501 up to a high of 27° @ 1731.

Relative humidity values ranged from a low of 59% @ 1227 up to a high of 87% @ 2223.

Barometric pressure ranged from a low of 30.08″ @ 0416 up to a high of 30.26″ @ 2340.

A trace of snow fell on Tuesday. December 2018 still has a total of 0.44″ of precipitation (liquid water equivalent) . The year-to-date precipitation is still 59.25″.

You can get my VP2 data on Weatherlink. I have migrated over to Weatherlink 2.0 so I have a new link for my data. You can now access the data through:

https://www.weatherlink.com/map/5aa32916-94c7-4a40-a2d0-0b74abfc8d8f

I am posting daily to weather underground. My ID is KMDROCKV200 and my station is called “Gardens of Traville.” Data is online, normally just about in real-time. The web address for my data on weather underground is: https://www.wunderground.com/personal-weather-station/dashboard?ID=KMDROCKV200

I contribute 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. And the tipping bucket is producing significantly higher values than my 4 inch gauge. 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.

Thursday should be partly cloudy (AM clouds/PM sun) with highs around 40° and lows in the upper 20s.

Friday should be partly cloudy and a bit colder, with highs in the upper 30s and lows in the low 20s.

Saturday should be partly cloudy and cold, with highs in the upper-mid 30s and lows in the mid 20s.

Sunday looks to turn mostly cloudy and colder, highs around the freezing mark and lows in the mid 20s. It looks like the big storm to our south may stay that way and we miss out on snow. If we get any, it will be light and should be Sunday night. Monday should be partly cloudy and not as cold with highs in the low 40s and lows in the mid 20s. 

Wednesday’s midnight observations included a temperature of 30.3°, relative humidity 78%, barometric pressure 30.26″ and rising, and a dew point of 24.4° under partly cloudy skies.

Currently at 0839 the temperature is 34.1°, dew point temperature 24°, relative humidity 67%, and barometric pressure at 30.35″ and rising under mostly cloudy skies. During the overnight, temperatures held in the low 30s, rising a bit after sunrise with partly to mostly cloudy skies.

Good morning from the Walrus on this Thursday.