07 November 2011

Weekly Outlook for Juneau, AK (PAJN); Nov. 7 thru Nov. 11

There are two features of interest for the forecast this week: 

1)  On Tuesday, an upper trough will push its way across the eastern Gulf of Alaska, ushering in a weak surface low.  This feature will have a cold front associated with it, and will cool the temperatures to allow the rain showers to become snow across the area.  This system will quickly push out before the larger of these two systems moves in.

2)  Beginning on Wednesday, a deep low pressure system coming from Russia will make its way across the gulf of Alaska, deepening more in the process.  Although there is some disagreement between the models as to the exact track of this system, there is enough agreement in the timing for the FROPA associated with this second system to affect the area on Thursday.  Again, there are some big disagreements in the models, so this feature will be one to watch.

Overall, the classic Maritime climate pattern will rule the area with seasonal temperatures along with chances for rain every day with the exception for Tuesday, when the rain will mix with snow.  Highs will be in the upper 30's with lows in the mid 20's.  Winds will vary, depending on the location of the passing ETC's but will average around 10-15 MPH for any given day, again subject to the location and track of the passing ETC's.

No comments: