Saturday, November 27, 2010

Saturday's forecast

Dry and warming conditions will continue to be the trend as we go through the weekend as upper-level ridging continues to build into the region. Sunday night a long-wave trough will move out of the west towards the Great Plains. This upper level wave will be in conjunction with the 500 mb wave and vorticity. This will lead to prime conditions for lee cyclogenesis in Colorado on Sunday. On Sunday, an area of low pressure is forecast to rapidly develop/deepen over eastern CO and move northeastward during the evening towards the Dakotas. As the low approaches the SNOwD UNDER domain, the low is expected to weaken some, but none-the-less provide nearly 24 hours of light-moderate snowfall late Sunday night into late Monday night. The storm is still too far away and the models are not in agreement therefore, start time nor snowfall accumulation amounts cannot be exactly determined at this point.

Today: Expect temperatures to be in the mid 20s with breezy southerly winds. Cirrus clouds will start to approach the domain during the afternoon hours, but will likely be partially to fully obscured by low-level stratus.

- Lead Forecaster

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