Area Forecast Discussion
Issued by NWS Jackson, MS

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FXUS64 KJAN 231031 AAA
AFDJAN

Area Forecast Discussion...UPDATED
National Weather Service Jackson MS
431 AM CST Thu Nov 23 2017

.UPDATE...
Updated for 12Z aviation discussion

&&

.AVIATION...
12Z TAF discussion:
Winds were light under clear clear skies. VFR conditions will
prevail through the forecast period./17/


&&

.DISCUSSION...

Today through Tonight: Latest Rap and Satellite imagery showed
an upper trough over the Mississippi Valley with high pressure over
the Lower Mississippi Valley. Under light winds, patchy frost, and
radiational cooling predawn readings were in the 20s and 30s.

For today into tonight the upper trough axis will push off to the
east as upper ridging builds over the forecast area from the west.
Under full insolation highs will be from the middle 50s to around
60. Lows for tonight with some additional radiational cooling, light
winds and clear skies overnight lows will be from the lower to
middle 30s. Expect once again some patchy frost./17/

Friday through next week...

Mainly dry, mundane weather is expected from Friday through early
next week with only slight fluctuations in daily high and low
temperatures and several weak upper disturbances becoming the only
points of emphasis over the period. Strong upper ridging over the
SW Conus and troughing over the eastern CONUS will result in
upper NW flow over our region. Highs on Friday will be seasonable
and will increase 3-5 degrees areawide on Saturday. A weak upper
disturbance will push a dry cold front through the region on
Saturday. Cooler air filtering into the ArkLaMiss behind this
front will result in a return to average highs on Sunday.A few
sights in the northern portions of the forecast area could fall
to freezing on Monday morning. Above normal temperatures will
make a return on Monday and Tuesday as upper heights begin to
increase over the region. A shortwave trough will begin to dig
across the Central Plains by midweek, approaching the MS Valley
region. Model solutions begin to differ by this period, but there
is confidence that we could see rain/storm chances starting to
increase Wednesday into Thursday as this disturbance approaches
the region.

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       58  34  65  41 /   0   0   0   1
Meridian      59  32  65  41 /   0   0   0   1
Vicksburg     57  32  65  40 /   0   0   0   0
Hattiesburg   61  33  66  39 /   0   0   1   1
Natchez       58  32  65  40 /   0   0   1   0
Greenville    55  35  63  44 /   0   0   0   1
Greenwood     56  32  63  43 /   0   0   0   1

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...None.
LA...None.
AR...None.

&&


$$

17



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