No Howard,  Sporadic E is quite common and the north-south path is 
indicative of that.  It is not unusual this time of year to see that kind of 
range on the FM Broadcast band.  Tropoducting usually follows a frontal 
boundary is generally is more often an east-west phenomennon.

I did a paper for a college Electrical Engineering class on sporadic E skip 
years ago.

----- Original Message ----- 
From: "Howard Kaufman" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, August 02, 2006 10:00 PM
Subject: Re: rare FM DX catch from Michigan!


> I'd doubt if you found e-skip that high in frequency, more like it is
> tropo or tropospheric bend skip.  This is caused by ducting of layers
> of air where warmer air is layered on top of cooler air.  Common in
> summer, especially near large bodies of water.  It's really fun and
> you can work  often for hundreds and hundreds of miles.
>
>
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