For the Euler equations in the thin domain bounded by the spheres of radii
1
and
1 + 
, we show that if the initial dates are bounded in
H3
and

-close in
H2
to two-dimensional data on the unit sphere
S2
, then the classical solution of the Euler equations exists on a time interval
[0, T(
)]
, where
T(
)
+ 
as

0
. Moreover, on this interval, we compare this solution with that of a system of limiting equations on
S2
.