Dry cold front to pass tonight with temperatures warming into the weekend
Thursday, September 11, 2014
An unseasonably strong cold front is lurking just to our north and will likely blast through the area around sunset. This front has already surged down the Front Range, and uncharacteristically looks to bring the first low elevation snowflakes to that area before Steamboat Springs. Most if not all of the moisture associated with the front will also slide to our east, leaving us dry and seasonably cold for tomorrow, especially in the morning where we may see some below-freezing temperatures for the first time this season.
The dry air behind the front will keep our area sunny through Saturday before a trailing wave passes to our north late that night. Temperatures will cool a bit again on Sunday, but not be as cold as Friday morning, and there may be some showers in the afternoon as moisture from the south moves northward behind the departing wave. In fact, a ridge is forecast to build behind the departing wave and the clockwise circulation around the west side of this ridge will continue drawing moisture north through the workweek, leading to warming temperatures and the continued slight chance of afternoon storms.
Another strong wave approaches the west coast late in the workweek, but again there is disagreement about the interaction with another tropical storm forecast to be off the coast of Baja. The European ECMWF keeps these storms separate and the American GFS phases them. Remember this was similar to the prediction last week, and the end result was that tropical moisture was shared by the storms leading to the heavy rains on Tuesday, even though the storms themselves remained separate. So again, the outlook for next weekend is uncertain.
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