Did you think we’d have a break from the meteorological madness this season? Cute. A triple threat is coming for California, and apropos, in time for Halloween.

A massive Pacific moisture plume, exceptionally high tides, and incoming surf are converging around Southern California this upcoming, specifically spooky, weekend. And after months of coastal erosion, flooding, and monster waves, it’s been nonstop.

Here’s what’s coming.

Pineapple Express: A River in the Sky

Forecast models show an enormous ribbon of Pacific moisture approaching California.

The phenomenon resembles the Pineapple Express, a type of atmospheric river that taps tropical moisture near Hawaii and transports it thousands of miles toward the West Coast.

NOAA describes atmospheric rivers as “relatively long, narrow regions in the atmosphere” that carry enormous amounts of water vapor.

When that moisture reaches land, it can unleash tremendous rainfall.

The National Weather Service expects widespread Southern California rain Saturday,…