Really, really lovely cumulonimbus action tonight! I just happened to have my drone in the car and got some solid shots of DT Seattle/Lake Washington/Mercer Island/Bellevue looking north from Skyway. Alas, the focal length of the lens doesn't do the vertical height justice and my WB was off rendering it into semi-gross HDR territory, but still... fun looking weather! It was quite windy- I was flying right at 390 ft and the drone was giving me all sorts of warnings about sustained winds/gusts.
A most incredible snow storm. At times the snowfall rates have been as heavy or slightly heavier than January 2017. Temp 27.5, Dewpoint: 27.1 with gusty east wind and very heavy snow continuing. I'm at 11 1/2" now! UNBELIEVABLE!!!! This pic does no justice at all.
NBM is quite an interesting product! Their weighting algorithm is moderately complex and dynamic, though does has some drawbacks as we saw yesterday. For those who don't know, NBM is an attempt by NOAA to create a super probabilistic forecast model that ingests output from all the models above and outputs forecast guidance for local offices that help them to gauge the relative odds of particular weather outcomes. The 'special sauce' is the post-processing, normalization and weighting that they d
Today will make it 8 of the last 10 days featuring below normal temperatures. That ends tomorrow as temps soar into the high 70's and then 80's on both Monday and Tuesday! A slight shot at some showers today but a better chance on Tuesday. Temps should remain above normal in the mid 70's for much of the upcoming week.
Chester County Records for today: High 95 degrees at Sadsburyville (1915) / Low 26 degrees at Coatesville (1926) / Rain 2.45" at East Nantmeal (2007)
It looks like the midde of winter up in Snowbowl...25" of powder the last 2 days, 19" along just yesterday...another Foot or more today/tomorrow!
https://www.snowbowl.ski/the-mountain/weather-conditions-webcams/webcams/
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