Tuesday, September 21, 2010

Variable weather pattern, Winter weather coming

The patchy morning fog has burned off as one weak disturbance passes to the north, then, another will pass to our south tomorrow as high pressure builds over our area. So tomorrow will be similar to today then Thursday a weak frontal system ups our rain chances before another ridge builds in Friday and Saturday pushing the temperatures up into the low 60s. Saturday night another frontal system threatens a chance of rain into Monday though the models are not real clear on this.

I have had several folks ask about this fall and winters weather expectations. Well, it isn’t the best of news, potentially. It appears we are in for a relatively strong La Nina year in the equatorial region which continues to strengthen. La Nina is a condition in the equatorial Pacific where the waters are unusually cold, the opposite of El Nino. La Nina conditions are characterized by warmer than normal temperatures in the southeast US and colder than normal temperatures in the northwest, between October and to March time frame. It is also characterized by higher than normal precipitation amounts for the Pacific Northwest while it typically favors lesser precipitation in the southwest, and the mid and lower Mississippi River Valley. While this is all about averages, I will point out the last La Nina years were the winter of 2007/08.

GM

No comments:

Post a Comment