Clouds will clear out tonight, leaving
for clear skies for the rest of the night and tomorrow, leading to a perfect
diurnal cycle. Northerly winds will gradually weaken and could weaken just enough
for a bit better radiational cooling and surface inversion formation at around
sunrise, but not enough for ideal radiational cooling. Otherwise, a gradual cooldown
is expected, with a cold air mass already in place. It will quickly warm up
tomorrow until a surge of northerly wind associated with a secondary cold front
and reinforcement of the cold air mass will stop the warmup in the afternoon. With
the sunshine gradually modifying the cold air mass, it will likely get just a
bit warmer than models (likely not as much as last Friday though), especially
with compressional warming ahead of the secondary cold front. The pressure
gradient won’t be that strong, but the full sunshine and boundary layer mixing
will lead to efficient mixing of any stronger winds aloft down to the surface
when the surge of northerly winds arrive in the afternoon, so peak winds will
be close to the late afternoon boundary layer mean or 900 hPa winds (perhaps near
or a bit stronger than USL).
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| Source: PivotalWeather |
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