Cold-season precipitation
low-med
Often drier (weak)
Cold season / winter
El Niño is associated with a less-reliable dry signal in the northern Rockies.
Regional historical composite · not a forecast
Halpert lists less-reliable dry signal in the Pacific Northwest and the northern Rockies. No separate high-confidence temp/storm chip text beyond northern milder language (see R08).
Season context: Cold season / winter
Atlas composites for this region: not a city forecast.
Often drier (weak)
Cold season / winter
El Niño is associated with a less-reliable dry signal in the northern Rockies.