Tuesday, September 18, 2007

 

Unusually cold storm system for the southland late this week

An unusually cold/wet storm system will track south from the northern Pacific and cut-off the from the main flow by late in the week.

This will first result in a deepening of the marine layer over the coastal/valley areas...extending inland to the lower mountain slopes by early Thursday morning.

Additionally... showers will increase in areal coverage over SoCal by late Thursday afternoon and become widespread by early Friday...then continue through early Saturday morning.

The latest computer models are indicating between 0.25" to 1.00" of rain over the coastal plain and valleys...with possibly locally higher amounts along the foothills and coastal slopes.

With the cold air... snow levels will likely lower between 5,500 to 6,000' over the mountains by early Friday morning.

At this time... it's too early to tell on snowfall accumulations. but it's not out of the question that some snow may accumulate at least on the highest ridges and peaks.

# posted by SoCal WXMan @ 2:32 PM




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