Sunday, January 19, 2014
Beautiful sunny and dry weather will persist through Wednesday as a large and stable west coast ridge dominates our weather, though a grazing wave in northwest flow will knock temperatures back a bit on Monday. A small Pacific storm will interact with the ridge early in the workweek and the result of that interaction as well as the effects of another impulse dropping down the east side of the west coast ridge from the north will determine our weather for Thursday.
I don’t expect much precipitation from this scenario as the strong west coast ridge minimizes impacts from the Pacific storm. Cooler temperatures and perhaps only light snow with minimal accumulations are expected on Thursday before current forecasts cut off this storm from the mean flow and leave it over California to our south and west.
There has been and continues to be a large amount of uncertainty in the forecast for next weekend and beyond. It appears that all models want to change the hemispheric pattern and either undercut or break down the west coast ridge. Numerical models often struggle with pattern changes like this, and the uncertainty with next weeks forecast has persisted longer than normal. At this point, there is no use guessing what our weather may be until more stability emerges in the solutions not only between models but also within models.
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