National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FXUS64 KJAN 082056
AFDJAN

Area Forecast Discussion
National Weather Service Jackson MS
356 PM CDT Sat Aug 8 2020

.DISCUSSION...

Tonight and tomorrow...
A rather broad 500 mb ridge over the southern tier of the CONUS
keeping the weather relatively quiet over Central MS and the
ArkLaMiss. At the surface, a high pressure ridge dominates the
southeastern portion of the country.  Though the ridge axis is just
east of the forecast area, the pressure gradient is still relaxed
enough to result in light and variable flow...if not calm,
particularly in the overnight.  High temps in the low to mid 90s
this afternoon...but so far the Td values are holding to the upper
60s/lower 70s as true return flow has not yet picked up.  That being
said, tonight, dewpoint values in the southern tier of the forecast
area will likely recover enough to get at least an hour or so of
reduced vis.  Will leave that mention in the forecast for now. And
tomorrow will be a lot like today, hot with temps in the mid 90s.
However, south/southwesterly winds will start up as that ridge axis
shifts to the east, pushing more moisture into the region.  Heat
indices will surge into the low to mid 100s, with some of the warmer
temps in the Delta.

Monday through next Saturday...

Upper-level ridging stretched across the CONUS from the west to east
will keep conditions pretty much the same each day throughout the
forecast period for our area.

Shortwaves embedded within the ridge will bring increasing rain
chances to the the ArkLaMiss where showers and thunderstorms will be
possible mainly during peak heating hours(afternoon) each day.
Temperatures will range from the low to mid 90s each day following
the weekend trend of warm weather. Heat index values will reach near
or above 105 degrees which meets our HWO criteria for Monday and
Tuesday. There is a chance Wednesday may see the same values, but
will wait to add that day, pending the next shifts analyzation. A
`Limited Threat` has been added for much of the western and central
parts of our coverage area for Sunday-Tuesday. We will continue to
assess day by day and like always keep you updated./JNE/

&&

.AVIATION...
18Z TAF discussion:
VFR throughout the pd. Light and variable winds also through 24 hr
pd. SCT cumulus today will diminish near sunset, leaving skc for
the overnight except possibly in the SE, where some cirrus could
be left behind by afternoon showers/ts. Though some precip is
possible along the coast and in the southeast...coverage should be
limited.

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       73  95  74  95 /   1  18   2  40
Meridian      73  96  74  96 /   1  20   3  43
Vicksburg     75  96  75  96 /   0  15   1  24
Hattiesburg   73  95  74  95 /   2  28   3  52
Natchez       73  94  74  94 /   1  19   2  29
Greenville    73  96  74  96 /   0  11   1  16
Greenwood     73  96  74  96 /   0  11   1  21

&&

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

&&


$$

JNE/HJS