G'morning David,

 DW> Yes. Compared with the "supervolcanoes", such as the one
that simmers
 DW> under Yellowstone Park, in the U.S, Krakatoa was nothing. When the
 DW> Yellowstone one goes off, it will blanket North America under thick
 DW> ash. Fortunately, there's no reason to expect that soon.

Mmmm... they say that when Lake Taupo here last cleared its 
throat, ash was spread over the east of Australia and that Roman 
records had a visibly dimished summer for Italy ... I was 
particularly cheered to hear one vulcanologist say that he wanted 
to witness the next Taupo eruption -- from Australia.

 DW> A few days ago, a snowstorm was forecast here, so I had my snow-tires
 DW> put on my car. The snowstorm didn't materialize. Instead, we're having
 DW> unseasonably warm weather, close to 10C, sunshine, green grass, etc..
 DW> I'm going to keep the snow-tires on till May. We should have a very
 DW> mild winter.

I put tire chains in the boot when travelling south over the 
Desert Road in winter but have yet to put them on;  how do your 
snow treads differ from off-road treads ?  Noisy on macadam ? 
Imprecise steering ?

Miles.
 
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