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 weekly drought map shows no dramatic changes. But more and more, little by little, the upper regions of our biggest rivers are showing very dry or some drought. The Mississippi, Snake, Missouri, Colorado, and Rio Grande are all, at least, very dry. Your'e right Andie. Not looking good for a hot summer ahead. The Ohio, Tennessee, and other larger rivers of the Southeast are currently free of dry conditions. But these rivers lack a snow pack source and will be subject to rapid drying as the summer heat comes on. The Sacramento and west coast rivers are ok..backed up by good snowpack.
I'm actually curious to know if there is evidence for lower groundwater supplies in western WA/OR after a water year with 80-90% of normal precipitation vs. one with 110-120% of normal. I've always assumed that the groundwater supply fully recharges in winter.
Completely different story east of the Cascades, obviously.
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