Area Forecast Discussion
Issued by NWS Jackson, MS

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FXUS64 KJAN 241819
AFDJAN

Area Forecast Discussion
National Weather Service Jackson MS
1219 PM CST Fri Nov 24 2017

.UPDATE...
Updated for morning update and 18Z TAF issuance.

&&

.DISCUSSION...
Chilly but pleasant morning occurred and temperatures are rising
into the lower 60s today. Going forecast was in good shape. /28/

Prior discussion below:


Today through Tonight: Latest Rap and Satellite imagery showed the
region under northwest flow aloft with the upper trough tracking
east of the forecast area. The ridge of surface high pressure
continued 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 an upper trough axis which will be associated
with a cold front will approach the region from the north. This will
be associated with an upper jet pushing into the Southern Plains
toward the Lower Mississippi Valley.  Under some high clouds highs
will be from the lower to middle 60s. As the front approaches for
tonight high clouds will increase in coverage from the northwest.
Lows will moderate under the cloud cover with readings in the upper
30s to the lower 40s./17/

Saturday through next week...

A quiet period of weather is expected throughout the upcoming
period. A dry forecast will prevail through the weekend and early
next week before rain chances begin to increase by mid week next
week.

Cloudiness will begin to increase on Saturday as a dry front
pushes through the area. Highs on Saturday will reach the upper
60`s with some areas topping 70 before cooler air begins to filter
into the region. Highs on Sunday will be a 3-6 degrees cooler than
Saturday under clearer skies. A warming trend will commence early
in the week as a surface high slides east of the region and upper
heights begin to increase as the ridging over the western CONUS
migrates east. An upper closed low will begin to advance across
the Plains by midweek, dragging an associated surface front
towards the ArkLaMiss. Model solutions still differ quite a bit
spatially and temporally with this system so PoP chances were
kept vague, extending from Wednesday through Friday. The GFS
suggests the front will progress through the region fairly quickly
while the Euro has a slower, wetter solution.

&&

.AVIATION...
18Z TAF discussion:
VFR conditions with light winds less than 10 kts expected at all
TAF sites through the period. Winds will gradually become
southerly by the very end of the period. /17/28/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       41  69  41  64 /   0   0   0   0
Meridian      40  68  40  64 /   0   0   0   0
Vicksburg     41  70  41  64 /   0   0   0   0
Hattiesburg   38  68  42  66 /   0   0   0   0
Natchez       41  70  42  65 /   0   0   0   0
Greenville    43  66  40  62 /   0   0   4   0
Greenwood     43  66  39  63 /   0   0   4   0

&&

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

&&


$$

28



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