On Sep 22, 7:03*pm, cernauta wrote:
On Mon, 21 Sep 2009 15:28:09 -0700 (PDT), Andy
wrote:

On Sep 21, 1:52*pm, danlj wrote:
I hope this turns into a thread on "How I keep going" - there must be
scores of pilots more excellent than I who can say more than me.

I well remember that years ago when a visiting German pilot asked for
advice on finding thermals in Arizona I told him to look above and
downwind of cattle tanks. *These are known as stock ponds in other
places. *His reaction, that I must be a complete idiot for suggesting
that pools of water could trigger thermals, has made me cautious about
offering that advice to anyone. *I hoped he landed out but I don't
think he did.

Andy

There was an article in S&G, a few years ago, about thermal origin and
how to guess their location.
It was under the title "Triggers and Feeders". Interesting reading
about the wide areas that collect warmer air, and features on the
ground that induce the bubbles to win adhesion and start soaring.

An antenna, a pond, a building, a moving object etc, all are excellent
triggers, but they're worth nothing without an adequate volume of warm
air being supplied by the feeder area.

Aldo Cernezzi

Many times in strong conditions (especially down low) there will a
strong downdraft to be crossed before you hit that (thank you god)
strong thermal.

Bill Snead