Tomer’s Take
- Abnormally dry pattern across the West with large high pressure dome through 2/13.
- One minor, fast-moving cold front races through MT, WY, and CO between 2/10-2/11.
- 3-day break in precipitation for the Pacific Northwest and British Columbia this weekend as storm track shifts north.
- Two Alberta Clippers deliver light snow accumulation to the Northeast through 2/13.
- Snow returns to the Intermountain West around 2/14-2/15, but it appears to be a “one and done” setup.
Water vapor satellite shows the storm track and large Western high pressure ridge. Orange/red colors = drier air aloft.
Waiting Game
The long dry stretch continues across CA, NV, and UT. Cold fronts are forced down the eastern periphery of the ridge through MT, WY, CO, and NM. This is what you might expect during a La Nina phase with some exceptions of course. The latest forecast keeps La Nina in place through Winter then gradually transitions to a “neutral phase” late Spring and early Summer. In the forecast below, negative (colder) anomalies = La Nina.
A brief drop in pressures arrive 2/14-2/15, but it’s appears to be a “one and done” setup. High pressure rebuilds through 2/20.
What occurs after 2/20?
The Pacific North American Pattern (PNA) stays lightly negative through 2/24. This suggests an active pattern across the Intermountain West can’t be ruled out. But, it’s not a strong signal.
Snow Forecast
2/9-2/13:
2/14-2/18:
Northeast, 2/9-2/18:
For more analysis please watch my forecast video: