Tuesday was downright hot and humid, our second one of several this week during this last week of August, with high temps reaching the lower 90s and dew points once again climbing through the 70s under muggy southerly breezes. The Tuesday maximum temperature was 91.5° @ 1538, while the Tuesday minimum temperature was a muggy 73.6° @ 0709. The dew point temperatures once again climbed through the 70s today, ranging from a high of 78° @ 1232 down to a low of 71° @ 1539. The barometric pressure fell off a bit – the highest value being 30.13″ @ 1025 down to a low of 30.04″ @ 2030. The relative humidity dropped a bit, ranging from a high of 94% @ 0447 down to a low of 52% at 1539.

Remember now you can get the VP2 data on Weatherlink. You can access the data through http://www.weatherlink.com/user/walrusman444 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#history/ 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. I actually use the data I post to cocorahs from my 4″ cocorahs gauge I read manually as my “official” precipitation total each day.

I got 2 maps from Ray through cell phone text that he compiled from TV produced maps that he simplified to explain the basic pattern here in the surrounding central Maryland area. I finally got my July climate data package out to many on email, and also an update on the speakers subjects and the day’s time agenda for the 7th annual Tri-State Weather Conference in Danbury CT at Western Connecticut State University all day on Saturday, September 29, just about one month away. I posted this update as an add-on to my original post I made about the conference back in early May.

Sunny, hot, and humid conditions persisted on Tuesday, with the promise for an unwanted encore on Wednesday (low-mid 90s again on Wednesday) this coming week. Lows will be in the low-mid 70s on Wednesday. Speaking of 90° max temps, I have had 5 so far in August, compared with 14 down in hotter Washington DC (DCA). They call that area in part of downtown DC the Urban Heat Island and volunteers and scientists are studying this effect this week in downtown Baltimore and Washington DC by driving through many city neighborhoods with calibrated/very accurate thermometers and taking several readings as they drive through what they believe are some of the hottest regions of each city. Hopefully some good conclusions will come from this study after professional processing and analysis of the raw data. Anyway, Thursday looks like highs back down a bit to “just” 90° with mostly sunny skies forecasted now, moving the threat of storms/showers to Friday resulting in only an isolated chance for a shower on Thursday (20 POP). I believe the front is going to have a hard time getting through this heat ridge we have been under so far this week.  On Friday, a bit cooler temps with highs in the mid 80s under partly cloudy skies and a 50 POP for scattered thunderstorms, lows in the upper 60s. Saturday should have highs in the lower mid 80s under partly cloudy skies and a 60 POP for scattered thunderstorms. Sunday should be a bit warmer with highs in the upper 80s under partly cloudy skies and a 50 POP for PM thunderstorms. Lows throughout this Labor Day holiday period should be around 70°.

At 0842, Channel 4 radar is clear in the 4-state mid-Atlantic region. Closest precipitation has dropped down to center around the Chicago/Northern Illinois area extending SW into parts of Missouri. Also there are large areas of rain in parts of central Ontario and western Quebec at this time. Flooding has been rough in parts of the Midwest, particularly from what I have seen on TWC, in my old college stomping grounds out in much of Wisconsin.

At 0842, the data from the VP2 (coming from the ground radiation shield about 4 feet off the ground just under and out from the balcony) and the Lakewood WX Bug station are as follows:

Partly Sunny skies with some scattered high clouds, hazy, warm and humid. Clouds captured in today’s featured image have moved on off. Not shower worthy, but still it kind of surprised me.

Here is another image taken at the same time, pointing towards the sun to the ENE.Note the chaotic sky of middle to higher level clouds as you move left to right in the picture (NE through E) 

Station Relative Location Temp RH    DP    BP     Wind High/Low temp on Tue
VP2          Ground          77.5°  93% 75° 30.08″R NA     91.5°/73.6°

The total precipitation in the cocorahs gauge was 0.00″ through midnight Tuesday.
The VP2 tipping bucket recorded 0.00″ on Tuesday.

Tuesday’s precipitation was 0.00″
August precipitation total 7.53″
Year-to-date precipitation total 37.94″

WX Bug Lakewood 4500 ft, 77°  95% 76° 30.12″R Calm G S 2
                            140° from station                 Tue. Hi/Lo 96°/72°

The Lakewood rain gauge recorded 0.00″ of rain on Tuesday. The August total precipitation total is still 4.26″ with the 2018 year-to-date (YTD) amount still at 49.43″. I definitely continue to believe that at times the disparities between the Lakewood WX Bug station precipitation amount total for the month and year and my cocorahs gauge based data is that the Lakewood precip values are estimated/adjusted from radar as it states on their online report on WXBug.

At 2400 obs Tuesday night the temperature from the VP2 was 78.8° RH 90% BP 30.07″R DP 75.6°
Clear with some haze, warm and humid once again.

Good early morning from the partially sunny/rapidly developing cumulus buildups (see today’s featured image taken 0800 EDT 8/29/2018 looking NNE), warm, humid, slightly hazy home of the Walrus on this Wednesday.