Saturday, October 20, 2012

Indian Summer

Or should we call it "Native North American" Summer being politically correct and all of that sort of thing seeing that it is the high tide of the political season and therefore political correctness runs rampant in these parts!  However, back to the point of an above normal spell of temps after the first frost.  Now that we have had 2 frosts, any mild spell will most certainly qualify for NNAS.  The 1st map below shows the temperature anomaly for the 850 mb temps (1 mile up) for Wednesday...
As you can see, the greatest deviations from normal will be centered over the Great Lakes.  However, we here in PA will be basking in a rather glorious experience of NNAS.  And after another Pacific front passes through on/about Friday, the Euro seems to think another ridge will pop here in the east and yet another surge of NNAS.  Take a look...for the day before Halloween...Also note the gathering cold in O Canada.
The Euro also suggests that the upper atmosphere will have higher than normal heights here in the east suggesting another surge of NNAS until the gathering cold can translate eastward across the continent...
Next Friday still looks to be warm if you believe the American GFS.  Here is the prog of the GFS Friday 2m temps...this suggests temps easily to be in the low 70s!  But look at that -30F to normal cold eyeing up the western high plains!
Clearly, a front can be seen passing through PA next Sunday as the GFS 2 m temps would indicate.  I also wouldn't think that any "fair-weathered" critters would want to be Alberta Bound with sub-freezing temps being forecast by the global modeling for next weekend in that province!  Lovers of NNAS would be heading to New England instead!
And although the timing and progression of the air masses are in contradiction with both the Euro and the GFS, it still appears that the 1st week of November will feature below to much below normal cold as shown with the 500 mb map below.  Some true Arctic cold will be developing over the western part of the continent.  Also note the tropical disturbance in the eastern Pacific.  It might just be a Halloween trick for those vacationing in Cabo!
So there you have it...a nice spell of NNAS followed by an abrupt change to some rather cold air that will be gathering in the northern portions of O Canada...Nunavut and the NW Territories to be specific, home to truly incredible Native North Americans!  Listen, with communities named "Igloolik" and "Whale Cove", you know that you are most definitely in NNA country!
Earlier, I made a reference to one of my favorite singer/songwriter's numerous ballads; Alberta Bound released in 1972 by Gordon Lightfoot.  I will leave y'all with this...and I hope this gets you up and moving this autumnal Saturday morning! (Not fond of the graphics; love the tune!)  Enjoy...


And enjoy your week's end...Go PSU, Temple, Ravens, Giants (SF Baseball), & Flyers.....Oh...that's right...forgot...no NHL for awhile.  Then how about Go Lady Rams Field Hockey as they enter District 3 play beginning this Tuesday!
Smitty

AA:  Nice week of Indian Summer coming up.  A rather quick transition to some below normal temps around Halloween.

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