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
Going back 3 years, you can see the issues really started after our cold/rainy spring in 2022. Since then the faucet has been a drip for the northern peninsula. Seems like the shadow has shifted West compared to the last 30 year averages, which is an interesting phenomenon.
Those WRCC maps blend all stations together without regard to completeness of data. Or data issues like Boeing Field which has major issues currently and is massively under-reporting rainfall amounts. Lots of the smaller stations frequently have missing days. With temp maps... missing data could go either way (warm or cold) but when precip data is missing its always in one direction and that is drier than reality.
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insta pin. glorious cloud pics!
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