Even with high dew
points in the evening due to yesterday’s rain, it seemed like the air dried
out, and clear skies with just a little southwest wind led to a rapid cooldown
to 22F last night, well below just about all model guidance. A mix of sun and
clouds as well as increasing southerly wind led to a warmup to 55-56F,
surprisingly cooler than many models, with the warmest air just to the
southwest. Maximum wind is 12 kt so far, but the strongest wind will likely occur
this evening.
Northwesterly
winds will be just a bit too strong for ideal radiational cooling tonight, and
there will be mid-level clouds for most of the night, though cold advection
will still lead to a quick cool down, just likely not well below model guidance
again. The mid-level clouds will clear late in the night, leading to a temperature
dip then, though winds will probably be just a little too strong for rapid
cooling, though they are marginal.
Even with the
northwesterly wind, it is still a Pacific rather than an arctic air mass, and mostly
sunny skies will lead to a rapid warmup to above model guidance again tomorrow,
with no clouds or strong temperature gradient to induce more temperature uncertainty
like today. Winds will strengthen slightly during the day tomorrow due to the
sunshine helping to mix stronger winds aloft down to the surface. There will
also be a resurgence in the wind tomorrow night at around the end (Thursday
06z) due to a subtle surface trough passage, with winds up to 40 kt above the boundary
layer, but the nocturnal inversion will preclude most of that from mixing to
the surface.
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| Source: PivotalWeather |
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