Monday, February 6, 2017

Series of storms to bring rain, wind this week

The storm that arrived last night in Northern California will be the first of three this week that will bring plenty of rain, snow in the higher elevations and some strong winds. From the National Weather Service:
Storm #2 moves in quickly [...] Monday night- Wednesday with another round of gusty winds Monday night through Tuesday morning. This storm is warmer and wetter than Storm #1. Heavy snow will continue above 6000 feet through Tuesday morning before snow levels quickly rise above 8000 feet by Tuesday afternoon. Storm #3 moves in sometime Thursday - Friday though exact details are still uncertain. Localized flooding possible this week on streams and roadways.

Impacts
Hazardous mountain travel with chain controls, travel delays, and whiteout conditions at times
Travel difficulties, downed tree branches, and localized power outages from gusty winds and rain
Localized flooding on streams and roadways, especially with Storm #2

Forecast Confidence
High for today - Wednesday
Medium for Thursday-Friday

Timing and Strength
Storm #1: This morning
Showers heaviest overnight - Monday AM
Snow levels ~6000 feet, 1-2 feet at pass levels
Gusty winds of 30 to 50 mph in the Valley, 50+ over mountain ridgetops 5pm Sunday - 12pm Monday
Storm #2: Monday night - Wednesday
Not much break between Storm #1 and #2
Warmer and wetter
Heavy snow above 6000 feet through Tuesday AM. Snow levels rising above passes by Tuesday afternoon.
Gusty winds of 30 to 45 mph in the Valley, 50+ over the mountain ridgetops Monday night - Tuesday morning
Storm #3: Thursday - Friday
Still uncertainty on timing
Snow levels start high before lowering back below pass levels
Likely another round of gusty winds

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