Not P but Moby-Dick (109)

[Mike Jing]

>From Chapter 134:

So suddenly seen in the blue plain of the sea, and relieved against the
still bluer margin of the sky, the spray that he raised, for the moment,
intolerably glittered and glared like a glacier; and stood there gradually
fading and fading away from its first sparkling intensity, to the dim
mistiness of an advancing shower in a vale.

The "shower" here is not rainfall but a stream, is that right?