Rainshadow Posted November 5, 2019 Report Share Posted November 5, 2019 Here is a running table of the GFS's lowest predicted thickness as well as max temps. Word of caution about 11/8, that is an afternoon max temp. The daytime max temp may occur at midnight. If one takes away those (I dont know what to say) non sounding runs, the model has been pretty consistent. Rather high thicknesses for such low maxes, mainly because the cold air is more shallow and concentrated below 850mb. The GFS can overdo this, although the Euro is also close. BTW prior to Halloween, there were not many runs that had it this cold as the GFS was (knock me over with a feather) too progressive/zonal with the cold air. The record low maximum temperature for PHL for 11/8 is 41F set in 1927 and for 11/9 it is 40F set in 1976. That was one brutally cold Oct-Jan. 1 Quote Link to comment Share on other sites More sharing options...
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