11/23 – Payton’s Thanksgiving Morning Forecast

A cold start to the day but by this afternoon a cool and pleasant Thanksgiving Day is in store for the forecast
area. No major changes have been made in the short or long term
of the forecast this morning. The quiet weather continues for us
through the remainder of the week and into next week. Deep layer
northwest flow will remain in control of the area through Friday
night. This flow pattern will keep a very dry and very stable
airmass in place across the region. Expect highs today to struggle
to reach much above the low 60s across most of the forecast area.
Clear skies should allow for another night of radiational cooling
tonight…lows will once again drop into the 30s for a large
portion of the forecast area. Only areas immediately south of Lake
Pontchartrain and close to the Louisiana coast will remain the
lower to mid 40s tonight. Temperatures will start to moderate this
Saturday.

A front will move through the forecast area Saturday, but with no
moisture around this will only reinforce the dry air mass that
will be in place through the weekend. Temperatures should warm
close to seasonal norms near 70 degrees in advance of the front
Saturday afternoon, but another round of cold air advection
Saturday night and Sunday will push temperatures back to around 5
degrees below average for the rest of the weekend. High pressure
moves across the southeast through early next week. Southerly flow
will then come back into play by Tuesday. This will help bring
temps back up and increase moisture across the region. As stated
in last forecast update, guidance is still in disagreement about
timing, placement and progression of a system expected to impact
the forecast area in the Wednesday-Thursday timeframe. Have went
with a blend of guidance and a slight chance of showers through
this period.

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