Tuesday 30 November – Sunday 5 December
Extended outlooks are more general in nature than the daily short term forecasts. Beyond a week, there is often significant uncertainty in the location and intensity of specific weather events. I will note where there is less, or greater, confidence than normal in these extended outlooks.
For more information, check out the latest weather animations.
Here is the latest short term weather forecast.
- Little change in the weather pattern over the next seven days (still).
- Warmth in the West slowly displaces cooler temperatures in the East
- Drier than average except for Washington State
- Periodic high winds over the Northern Rockies.
- No really cold air for the Lower 48 through at least mid-December.
Outlook for Tuesday 30 November – Thursday 2 December:
— Rains return to coastal and northern Washington State Tuesday and Tuesday night.
— Another clipper storm Wednesday and Thursday, but this storm will have more rain and less snow than the clipper from this past weekend.
— High winds over the Northern Rockies and western High Plains Tuesday through Thursday.
Outlook for Friday – Sunday 3-5 December:
— A more significant storm develops Saturday over the northern Rockies and moves eastward to Lake Superior by Sunday.
— Snow along the Canadian border
— If there is enough moisture available (uncertain right now), there will be rainshowers and thunderstorms across the mid-Mississippi River Valley on Sunday.
— High winds Saturday over the western High Plains.
— High winds Saturday over the PA and WV Appalachians.
— Strong winds spread into the Midwest on Tuesday.
— California and the Southwest remain very dry throughout the forecast period..
Total snowfall accumulations through Sunday 5 December 
Percentage of precipitation, relative to normal, through Sunday 5 December 
Average temperature difference, relative to normal, through Thursday 2 December 
Wind Gusts Saturday 4 December 
Average temperature difference, relative to normal, Wednesday – Sunday 1-5 December