Area Forecast Discussion
Issued by NWS Paducah, KY

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FXUS63 KPAH 231948
AFDPAH

Area Forecast Discussion
National Weather Service Paducah KY
248 PM CDT Thu Mar 23 2017

.SHORT TERM...(Tonight through Saturday night)
Issued at 248 PM CDT Thu Mar 23 2017

Showers will depart our eastern counties this afternoon. Expect a
dry night. Good low level / sfc flow will keep temps up overnight
upon southerlies. Convective chances should be confined to SEMO
Friday, especially in the afternoon, with increasing chances of
convection Friday night through Saturday as an upper low
approaches from the west. Convective chances will continue
Saturday with best chance PoPs slowly progressing from west to
east across the area. The system is forecast to lift NE across
the mid MS Valley region by 12z Sunday. Therefore we diminish PoPs
Saturday night. Used a blend of MOS and existing numbers for
temps. Used a blend of all models for sensible wx elements as
there is good overall agreement.

.LONG TERM...(Sunday through Thursday)
Issued at 248 PM CDT Thu Mar 23 2017

A brief lull in the wet weather is expected by Sunday afternoon into
Sunday evening as a weak upper level ridge moves over the region.
Another area of low pressure will move east from the Central Plains
into the middle Mississippi Valley by 12z Monday.  Showers and
possibly a few thunderstorms will spread into areas along and east
of the Mississippi River late Sunday night, with showers and
scattered thunderstorms spreading across the entire PAH forecast
area through the day Monday and continuing into Monday evening.
Models are in fair agreement taking the low into the southern Great
Lakes region by 12z Tuesday, and showers will taper off from west to
east late Monday night into Tuesday morning.

Weak upper level ridging will give us a period of dry weather
Tuesday afternoon into Wednesday.  Models have been going back forth
on the timing of yet another low pressure system coming out of the
Plains for mid week.  We have backed off on the precipitation
timing, and hold off on bringing in chances of showers until
Wednesday night.  Went with some small chances of showers in our far
west counties Wednesday evening, spreading across our western half
of counties by Thursday morning.  Showers are forecast to continue
across most of our area into Thursday.

Temperatures will remain unseasonably mild through the period.  High
temperatures will be in the middle 60s to middle 70s, with lows in
the upper 40s to middle 50s.

&&

.AVIATION...
Issued at 1219 PM CDT Thu Mar 23 2017

Band of showers was east of a KMVN to KCEY line and will continue
to move east through mid afternoon. Mainly VFR cig/vsbys
conditions in this convective band, though intermittent MVFR
conditions will continue.

Clouds will continue to decrease into tonight. Overnight the main
item will be low level wind shear developing with 1500-2000FT
winds increasing to 45 to 50 kts. The models indicate low level
MVFR clouds will develop across the area by Friday morning and
persist. We have introduced this into the planning portion of the
forecast with gusty south winds continuing.

&&

.PAH WATCHES/WARNINGS/ADVISORIES...
IL...None.
MO...None.
IN...None.
KY...None.
&&

$$



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