| Forecasting heavy snow at Wenatchee, Washington - :14374 | National Weather Service (NWS)
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Forecasting heavy snow at Wenatchee, Washington
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    United States, National Weather Service., Western Region,
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    An examination of past cases indicates that strong warm advection was the principle characteristic of the majority of heavy snows at Wenatchee. Further examination of these cases revealed that a high probability of heavy snow existed when temperatures at the 850- and 700-mb levels in the cold air in advance of the warm advection were below specific critical values. The only other well defined heavy snow pattern occurred during Arctic outbreaks associated with strong southward moving upper troughs or closed lows. These cases featured cold advection with heavy snow developing in easterly upslope flow against the Cascade range.

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