A nice (and short) tutorial on water vapor imagery:
http://www.ssec.wisc.edu/sose/wvi/water-vapor1.html
 
The autumnal equinox is Friday at 5:05 AM.  The Sun crosses the celestial equator, from north to south marking the beginning of autumn in the Northern Hemisphere.

1.  Is there "truth" in the notion that you can balance an egg on it's end during the equinox ?
2.  On Friday, sunrise in Brentwood is at 6:41am EDT and sunset at sunset: 6:51pm EDT.
        a.  Why not 6 AM and 6 PM  (or 7 AM and 7 PM for Daylight Savings Time) ??
        b.  There are 12h 10m of day light on Friday - why not 12 hours since "equinox" means equal day night??

 
Welcome to the MET 101 - Fall Semester! 
Speaking of Fall - it's going to get cool by the end of the week as Canadian high pressure moves in.

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Friday's Forecast High Temperature
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Friday's Forecast High Temperature Departure from Climatology