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Re: climatic zones

At 05:26 AM 3/25/98 +0000, you wrote:
>I read with interest all your messages. Could someone please define the
U.S.climatic zones or tell me where to find such a listing so that I can
understand what is relevant to my situation (Wales,uk)

I read on another robin where people brought altitude, proximity to bodies
of water, humidity, etc. into the discussion about what differentiates the
various zones.  There is only one factor in the USDA equation - and that is
whose zone map we are using - and that is the lowest average winter
temperature.  That is why, for instance, the zone in my area, at a low
altitude next to Lake Michigan, is the same as inland, mountainous areas of
Kentucky, and dry areas out West (US) that never have a single day where
the humidity is anywhere near what we here suffer for months on end every
summer.

Proximity to water, altitude, etc. have an effect on the temperature range,
but they do not directly determine why the USDA calls a particular area by
a certain zone number.  Only the average minimum winter temperature.
 
Sheila Smith
mikecook@pipeline.com
Z 5/6
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