Tuesday featured several changes throughout the day. The morning after sunrise was sunny and hot, as the high air and dew point temperatures for the day were reached a few minutes prior to noon. The afternoon brought up cloudiness from storms building in, which hit my station (0.82″ daily total) the heaviest between 1410 and 1430 with a max rain rate of 5.54″/hour @ 1425. Lighter rain fell before and after this period (1355-1510). The storm took some of the heat out of the day, and replaced it with somewhat steamy conditions with the great increase in available moisture from the rain. Temperatures started out very warm, with an AM min of only 77.9° @ 0705 then rose steadily through the 80s, topping off at 90° just before noon for the high temp of the day. Overnight into Wednesday skies were partly cloudy, with temps dropping into the upper 60s by sunrise. Temperatures will not rise as much on Wednesday (80s) with increasing clouds and storm chances later in the day. The Tuesday maximum temperature was 90.0° @ 1158, while the Tuesday minimum temperature dropped (late) to 73.4° @ 2349. The dew point temperatures rose through the 70s during the AM hours then gradually fell back down into the 60s during the evening, ranging from a high of 78° @ 1154 down to a low of 65° @ 2307. The barometric pressure lowered from Monday’s values – the highest value being 29.89″ @ 0000 down to a low of 29.82″ @ 1325. The relative humidity values were a bit higher than yesterday’s, ranging from a high of 93% at 1443 down to a low of 63% at 1051.

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 once again relaxed in bed in the AM, staying cool in air conditioning to beat the heat outside, but had to arise for a ride by Mike to Kaiser for a podiatry (toe-nail clipping) appointment at 1430. All went well at the appointment, but the storm started as I was getting into Mike’s car, and poured down on the way to Kaiser so I missed observing the action personally at my apartment. In the evening I continued to work on my May data spreadsheet input, and a variety of correspondence including CoCoRaHS on email and facebook messaging.

Tuesday was a bit “less hot” under partly to mostly cloudy skies with highs in the mid-upper 80s through the afternoon after hitting 90° for the daily high around noon. We had a nice thunderstorm in the mid-afternoon and somewhat cooler and gradually a bit drier air the rest of the day. Wednesday should be cooling off a tad more with a 40 POP for PM thunderstorms under partly cloudy skies, highs in the mid 80s and lows in the upper 60s. Thursday should be partly sunny and less humid with highs in the mid 80s and lows in the mid 60s as the summer solstice comes in. Friday features cloudy, rainy skies with highs in the lower 70s, lows in the mid 60s, and a 70 POP for all day rain. Saturday should be mostly cloudy with a 90 POP for thunderstorms, highs in the low 80s and lows in the upper 60s. Sunday should be partly cloudy with highs in the mid 80s and lows in the mid 60s.

At 0932, NBC4 radar is showing some shower activity to my WNW over western Maryland and south-central PA, heading east and weakening, and if still together by the time it reaches my longitude, what is left of the rain should miss my location to the north. There is a larger area of showers/storms centered around Detroit MI and southern Ontario between Detroit and Buffalo, also headed east.

At 0932, 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 through some scattered altocumulus, warm and less humid

Station Relative Location Temp  RH   DP     BP      Wind  High/Low temp on Tuesday
VP2             Ground        76.3° 64% 63° 29.90″S   NA    90.0°/73.4° (Tue AM min 77.9° @ 0702)

The total precipitation in the cocorahs gauge was 0.82″ through midnight Tuesday. The VP2 tipping bucket had more (1.14″). It had an “unofficial” max rain rate of 5.54″/hour @ 1425. I think the generally greater amount in the VP2 tipping bucket rain gauge recently has been at least partially due to its proximity to a dense evergreen tree that frequently drips down and then blows the “catch” into the gauge. I mostly use this gauge to tell me when and how hard it rained.

Tuesday’s precipitation was 0.82″
June precipitation 3.09″
Year-to-date precipitation total 21.51″

WX Bug Lakewood 4500 ft, 76° 54% 60° 29.92″S Calm G E 6
                            140° from station                      91°/74°
The Lakewood rain gauge recorded 0.35″ of rain on Tuesday. June total precip is now being reported as 6.78″ with the 2018 year-to-date (YTD) amount now at 32.81″. I believe they will make some adjustments to the amounts due to the latest conflict in the data. I definitely continue to believe that at times the great disparity 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.

At 2400 obs Sunday night the temperature from the VP2 was 73.6° RH 73% BP 29.88″S DP 64.4°
Partly Cloudy, not as warm or as muggy at 2400 Tuesday

Good morning from the partly sunny, warm and slightly drier home of the Walrus early on Wednesday.