Old Eppy has got at least three things going for him:
1. Strong poleward outflow channel has established itself on the west side....good evacuation going on, hence, lowering pressures, hence enhanced inflow. This is the major factor right now in the intensification.
2. Good 'storm dynamics'--that is to say that Epsilon is making the most of it's environment and is a very efficient heat engine right now...that is basically what hurricanes are, heat engines. Epsilon is squeezing lots of output out of it's input.
3. Increased forward speed= increased translation enhancement of wind speeds...but this is a minor factor.
Also, other factors, as have been mentioned elsewhere....higher latitude= enhanced coriolis effect. Also, the upper tropospheric temps may be a factor.
Some storms just seem to have that 'hang tough' thing more than others. Epsilon sure has that! He is the "junkyard dog" of the hurricane season, for sure (Vince did a pretty good imitation of that too).
Just another oddity of the 2005 season (how much you want to bet that we only see it as an oddity...because we haven't seen enough hurricane seasons (well documented that is) over time....maybe this isNORMAL ?!)
Avila sure is bemused...what a fun discussion this am!
ps....it also seems that Eppy is coming out of, or still in, an ER Cycle....that is interesting...as another poster said, EPPY would be MUCH STRONGER over warmer waters...if that jet doesn't take him apart...hmmmmm?
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