What season is it? Many in the U.S. will be asking this question over the next few days.
A strong upper-atmospheric trough will dig into the Plains and Midwest as an upper-atmospheric ridge builds in the West. This will mean chilly temperatures for the northern Rockies to the southern Plains and into the Midwest, while the West Coast will bake in searing heat.For some it will feel like winter. For others, it will feel like it's still mid-summer.
Here are some other out-of-season features in the recent weather pattern:
September Snow
Rapid City, South Dakota saw its earliest measurable snowfall (at least 0.1 inch) on record on September 11 with 0.9" reported (previous record was September 13). North Platte, Nebraska also saw its earliest snow with a trace reported on Thursday.
Lake-Effect Rain Showers
This first taste of fall will even bring the chance for lake-enhanced rain showers late this week in parts of the Great Lakes region.
Western Heat
The heat persists in much of the Pacific Northwest as a strong ridge of high pressure builds into the region again.
Quiet Tropics
It certainly does not feel like early September in the tropical Atlantic. The weather has been active across much of the U.S., but the opposite is true for Atlantic hurricane season.
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