Scientific Forecaster Discussion
fxus65 kslc 221622
Area forecast discussion
National Weather Service Salt Lake City Utah
922 am MST Fri Nov 22 2019
Synopsis...a low pressure system will continue to depart the
area today. A dry and stable northwest flow will develop for the
weekend before a series of storm systems impact the area during
the upcoming week.
Discussion...the broad low pressure system is currently centered
over eastern Colorado, with some low clouds lingering over
portions of Utah and southwest Wyoming. These clouds are expected
to linger into the morning before diminishing significantly by
early afternoon. However, the arrival of the weakening back edge
of the low this afternoon will bring some additional cloudiness,
primarily in the mid and high levels. In the wake of the low,
temperatures will again be on the cool side, with maxes running up
to 5f below seasonal normals.
For the weekend, high pressure building off the California coast
will result in a generally dry and stable north to northwest flow.
The airmass over the area will steadily warm, but developing
temperature inversions will limit warming in valley locations.
However, inversion conditions will be short lived as a quick
moving storm system will track across the forecast area for Monday
into early Tuesday. This system will have a fairly well-defined
frontal boundary with it, dropping temperatures to 10f or more
below seasonal normals on Tuesday. As the front moves through, a
decent band of snow will accompany it, bringing snow down to the
valley floors of northern and central Utah.
After a brief break in the action on Tuesday, a relatively active
moist and unsettled pattern is anticipated Wednesday into at least
the first part of the weekend. Temperatures will remain below
climo, and precipitation could potentially impact Holiday travel.
No updates expected to the forecast this morning.
Aviation...light southeast flow should switch to light and
northwest around 18z-20z at the slc terminal. Ceilings near 4 to 6
kft will persist into the early afternoon with only scattered clouds
by 00z. VFR weather expected throughout the taf period.
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