THE BOTTOM LINE
By Tim Hannagan
22 September 2009 @ 10:53 am EDT
If it is a Monday or Tuesday it must be time for one of the GFS model runs to go hog wild with the cold and the trough in the eastern US. I say that sarcastically because it seems that the 0z or 12z runs of the operational GFS over the past few weeks but only on a Monday or Tuesday. Sure enough here we are early Tuesday morning and we see yet another major trough and pattern amplification which appears to be over done by the operational GFS on the 0z and the 6z runs at day 7 and day 8... that results in the Midwest east of the Mississippi River as well as the Northeast US seeing their 1st truly cold and mass of the season.