West Coast Atmospheric River Targets Nov 10–17

We tracked NOAA's Week-2 Outlook: a potent Pacific plume is aiming at the US West Coast next week.

Why the Pacific Trough Is Locking In

A deep low-pressure trough over the northeast Pacific will funnel subtropical moisture onshore.

Pacific Northwest & Northern California First

Initial heavy rain bands hit Washington, Oregon, and Northern California around Nov 10.

40% to 60%+ Odds of Excessive Rainfall

NOAA's Climate Prediction Center flags a 40%–60%+ risk of heavy rain and small-stream flooding.

Heavy Mountain Snow in the Cascades & Sierra

Colder air aloft will dump heavy wet snow across the Cascades, Klamath, and Sierra Nevada passes.

High Coastal Winds Threaten Power Feeders

Gale-force gusts along coastal Oregon and California can topple trees onto distribution lines.

How the 2026–27 El Niño Shapes the Storm Track

Warm Pacific waters and an active jet stream are amplifying autumn moisture transport onshore.

Drought Relief vs. Burn-Scar Debris Flows

Early snow boosts western reservoirs, but intense rain over wildfire burn scars raises mudslide risk.

Nov 12 Colorado Carbon Rule & Nov 16 EPA Hearing

Next week also brings Colorado's Nov 12 CO2 storage primacy rule and EPA's Nov 16 methane hearing.