In reply to an earlier message from Weatherlawyer who wrote:

1. Earthquakes and storms come from the same cause.

Richard Dixon wrote:

Care to explain more? From my viewpoint, Earthquakes are due to
motions at and beneath the earth's crust - from my layman's point of
view. Extra-tropical storms are formed by interactions of the upper
air with surface baroclinicity (temperature gradients). You really
need both in existence for the deepest "common-or-garden" storms.
Hurricanes form where sea surface temperatures are warmest and the
atmosphere is unstable to convection and there is little vertical
shear. Struggling to find any link here with earthquake formation.

I had been thinking exactly the same. A further point to bear in mind
is that earthquakes occur nearly constantly around the world with most
of them (90%, and 81% of the largest) taking place in the 40,000 km
long, horseshoe-shaped zone called the circum-Pacific seismic belt, also
known as the Pacific Ring of Fire, which for the most part bounds the
Pacific Plate.

But hurricanes/tropical cyclones occur at specific times of the year
(usually local summertime) and in regular oceanic locations:

- Northwest Pacific
- South Indian
- Northeast Pacific
- North Atlantic
- Australia Southwest Pacific
- North Indian

So some explanation is needed by Weatherlawyer for a connection between
these events. I'm sure a lot of people would want to know.

--
Mike LONGWORTH, Yateley, Hampshire, UK