Sanders, Before Seed, Beyond Harvest
OptiGro Location.


  • Currently

    Reported at Greenville, Greenville Municipal Airport, MS
    12:53 PM CST WED SEP 20 2017
  • 90°F32°C
  • Partly Cloudy
    Partly Cloudy
  • Feels Like:95°F35°CDew Point:70°F21°CHumidity:52% Winds:SW 9 mph 14 kph
    Pressure:29.97 in1015 hPaVisibility:10.00 miles16090.00 meters
  • Area Forecast Discussion

1208 PM CDT Wed Sep 20 2017

Updated for 18Z aviation discussion


18Z TAF discussion:
VFR conditions were observed across the region early this
afternoon. Expect brief reductions in visibility and ceilings due
to isolated to scattered thunderstorms for this afternoon into
early this evening. Otherwise can expect patchy fog late tonight
into early Thursday./17/


Latest satellite rap imagery showed a weak short wave approaching
the region from East Texas, which will enter the forecast area
during the afternoon. Latest Cam guidance shows showers and
disorganized convection developing by this afternoon. With lapse
rates of 6-7c few of the storms may be on the strong side with
some gusty winds. Otherwise removed the patchy morning fog, which
has lifted. Left highs in the lower 90s and made slight
adjustments to pops. Latest Cam guidance continues to show
disorganized convection for this afternoon./17/

Prior discussion below:

Today through tonight...

Fog concerns are less this morning compared to recent days. High
level cloudiness is keeping up temp/dewpoint spreads just a bit
while also not allowing sufficient cooling for temperatures to
fall well below crossover readings at many locations. Having said
that, some fog is still managing to develop - it just looks like
significant fog approaching the dense threshold is less likely.
Otherwise, the primary weather concern in the near term will be
for another round of diurnally driven and disorganized
thunderstorm activity today as the next weak shortwave trough
moves east across the ArkLaMiss. Unlike yesterday, the near term
CAM models show differing solutions in regard to convective
placement. Mid level lapse rates increased some in the past 24
hours due to lower heights, and additional increases could occur
today, so a few strong wind gusts could be a possibility with
storms that develop during peak heating. Expect any storms to
diminish quickly with nightfall with quiet conditions to follow
overnight. /EC/

Thursday through next Tuesday...

High pressure at the surface will
remain over the forecast area. However, heights aloft will fall over
the region during the period as an upper trough to our east is
forecast to slowly slide southwest, thus undercutting high pressure
aloft to our north. This, in addition to daytime heating and a
modestly moist airmass as precipitable H2O values generally sit
around 1.50 inches, will result in chances for mainly isolated to
scattered afternoon showers and storms each afternoon.  Any
convection that indeed develops will quickly dissipate around sunset
each evening.

As far as temperatures are concerned, warm conditions will persist
across the CWA.  High temperatures will generally top out from the
upper 80s to lower 90s through much of the period. Afternoon heat
index values will climb up around the century mark, primarily
Thursday, as dew points sit in the low and middle 70s. Some slightly
drier air working into the forecast area from the east through the
weekend into next week, will help keep heat indices in check during
this time, as dew points fall back into the 60s. Lows Thursday night
through Friday night will range from the upper 60s to lower 70s.
However, with the previously mentioned drier air over the CWA during
the weekend and into the first part of the new work week, lows
Saturday night through next Tuesday night look to generally range in
the mid and upper 60s. /19/


Jackson       92  70  92  71 /  29  18  23  12
Meridian      92  70  93  70 /  30  14  26  15
Vicksburg     91  71  91  71 /  28  15  20   9
Hattiesburg   91  70  91  69 /  36  24  31  18
Natchez       91  71  90  70 /  29  18  23  11
Greenville    93  71  92  70 /  25  10  13   6
Greenwood     92  71  93  71 /  27  11  18  10