Active Weather Day Wednesday

     Yesterday's front ended up under performing, I only received 0.04 inches of rain here in Redmond, other areas also received similarly meager amounts. Here is the 48 hour precipitation map.

Moving on, tomorrow will be the first real active weather day with a cold front passing through the area. This will bring about windy conditions with the frontal passing. Behind the front, there will be plenty of cold and unstable air to fuel widespread convective showers and a Puget sound convergence zone (PSCZ). Surface CAPE values look to remain fairly low (below 500), so any lightning strikes will be isolated. Expect heavy rain, gusty winds and small hail underneath these showers. Precipitation amounts will vary with the isolated nature of these showers but most areas in the western lowlands can expect anywhere from 0.20 to half an inch of rain, exceptions will be areas underneath these heavy showers and areas under the convergence zone. An interesting note to make is that the Seattle area will likely be rain-shadowed and will not receive as much precipitation (0.10-0.20 inches. This is evident in the precipitation map below. 


Going forward into the week, temperatures will turn chilly. On Thursday in the western lowlands, temps may not even get past the 40's. Similar, but a touch warmer on Friday Snow levels will drop low enough for it to snow in some of the passes. Snoqualmie pass may receive up to a slushy inch of snow while Stevens pass can expect anywhere from 1-3 inches of powder. Hopefully we can get an early opening to the passes this year!!






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