12z GFS does what it should in September.
Warm -> cold front in 8 days or so -> seasonable with mostly sub-60 dewpoints -> chilly with a 540 line through almost all of PA (actually dips to the VA/NC border at the end).
The end is in sight. CMC does something different and rebuilds the ridge in that timeframe after a less decisive frontal passage and retrograding trough.
GFS looks like it’s beating back that late-month trough with yet another ridge. Short-lived relief.
Cold front is west of the Mississippi on the CMC at 240.
Ugh.
Ah yes, now we’re into that phase where there are 9 days of heat. And when we wake up tomorrow, there will still be 9 days of heat. And when we wake up Thursday, there will still be 9 days of heat.
It’s hard when the quoted map here was the GFS’s map for today, just 9 days out. I think there was also one where my afternoon temp was 47 sometime this upcoming weekend, but we’ll give that one a pass because it was a lot longer range.
Even the PIT departure of -3.4 through this past Saturday should be easily made up and then some this week. Above normal month seems like a sure bet at MDT and more likely than not at PIT.