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
The official H/L yesterday at Grand Rapids was 81/57 there was no rainfall. The sun was out 87% of the possible time. The highest wind was 14MPH out of the SE. For today the average H/L is 83/63 the record high of 101 was set in 1916 the coldest high of 68 was set in 1915. The record low of 47 was set in 1977 the warmest low of 77 was set in 1916. The wettest was 3.49” in 2011.
The July 2024 mean so far at Grand Rapids is 70.8 that is a departure from average of -2.0° The highest so far has been just 86 if that holds to the end of the month it will be the coldest maximum for any July since 2000 and the 3rd coldest maximum for any July at Grand Rapids. The low for the month is 47 there has been 5.56” of rainfall that is a departure of +2.32”.
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