Since the Silverton ski area operates only Thursdays through Sundays, the frequent storms tend to fill in any tracks.

That was good because Hisin would get back in time, and bad because a slower- moving storm tended to have more time over the station.

However, these storms tend to drop large quantities of rain in a short time, causing flooding and destruction.

These storms tend to affect mountain areas and are difficult to predict.

The main reason is that such storms tend to move more slowly, remaining over a given area longer and thus dropping more rain there.

The tropical storms, and occasional hurricanes, tend to occur from July through November.

For example, storms tend to be stronger there.

The storms simply tend to concentrate here due to the thermal up-drafts from the hot mud.

Tropical storms, he remembered now, tended to be energetic but brief.

These storms tend to originate off the coast of Mexico (particularly the Baja California peninsula) and track west or northwest towards the islands.