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Why 1,000-meter grid as UTM, Zone S for Northern Zones?

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#1
JoeFred

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Why do the National Map US Topo Geo PDF maps specifiy the 1,000-meter grid as Universal Transverse Mercator, Zone S for zones in the northern hemisphere (example 17S for East Tennessee)? I notice National Geographics does the same for their Trails IllustratedMap series of the area.

 

JF



#2
razornole

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I live in Arkansas and we are in Zone 15S North, same latitude as TN.  I always specify "North" at the end when displaying the projection to help eliminate confusion.  It would make sense for them to have skipped the S Zone in the northern hemisphere, but they didn't.

 

kru


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#3
Melita Kennedy

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In this case, "S" is for a latitude band, not a hemisphere, and falls between 32 and 40 North. The "N" band falls between 0 and 8 North.



#4
JoeFred

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Thanks, kru & Melita. 

 

Yes, in addtion to omitting the use of the letters "I" & "O", doing the same for "S", "N", "E" & "W" would have made things simpler for a newbie like me, but then 26 letters will only go so far.  :)

 

Thanks again,

JF






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