The storm is almost here, and its going to be a tricky one! Its going to be a battle between those dry east winds (Cascadias), and this large plume of moisture coming in off of the Pacific. Heres a look at the relative humidity values and the water vapor image at noon. Today’s model runs have been coming in with a bit more snowfall for Western Washington compared to yesterday’s runs. Starting with the global runs, both the 12z Euro…
Good morning everyone! Snow is spreading northward with snowflakes being reported at the south end of Puget Sound. Here’s the radar image as of 7:50am showing the northern edge of precipitation reaching Tacoma. High res models haven’t shifted much since last night and are generally showing about an inch of snow for King County, with totals decreasing the further north you go. The HRRR is a bit more aggressive with spreading that precipitation northward, with the NAM keeping everything from…
Some notable shifts in the forecast models this morning has increased my confidence that we will see some decent snowfall totals in Western Washington. Portland friends – you’ll probably be seeing a variety of precipitation types throughout the week. There was a pretty large difference in the storm tracks between the European (Euro) and the American (GFS) forecast models yesterday. The GFS was sending those storm systems well to our south, which would have kept us very cold but mainly…