640
FXUS63 KPAH 101156
AFDPAH

Area Forecast Discussion
National Weather Service Paducah KY
656 AM CDT Mon Jun 10 2024

.KEY MESSAGES...

- Spectacular weather is in store for the first half of the
  week, with comfortable temperatures and refreshing humidity
  levels.

- Heat and humidity will arrive for the second half of the week
  through next weekend. The hottest temperatures of the season
  are forecast Thursday-Sunday.

- Dry weather is expected for the next several days, with the
  next chance of rain not forecast until very late next weekend.

&&

.UPDATE...
Issued at 655 AM CDT Mon Jun 10 2024

Visibility values have greatly improved across the Dense Fog
Advisory area in the southern KY Pennyrile, so felt comfortable
canceling it early.

&&

.DISCUSSION...
Issued at 156 AM CDT Mon Jun 10 2024

Today through Tuesday night...A refreshing airmass associated
with an area of Canadian high pressure is slowly filtering
southward into the region. Lingering low-level moisture across
southern parts of southeast MO, far southern IL, and western KY
have resulted in patchy fog formation, especially in the
southern KY Pennyrile and Ozark Foothill river valleys. Have
hoisted an SPS for locally dense fog for these areas through
11z, but if dense fog coverage increases, a Dense Fog Advisory
may be needed later this morning.

The first two days of the work week will be about as nice as it
gets for our part of the world in early June. Temperatures today will
climb into the middle to upper 70s with very comfortable
humidity levels. A passing H5 ripple of energy will bring an
increase in cloud cover this afternoon, but the low levels will
be very dry, suppressing any precipitation development. Low
temperatures tonight will fall into the lower to middle 50s.
Some areas in the Wabash Valley could even see lows dip into
the upper 40s! Tuesday will see more of the same, with highs in
the middle to upper 70s under mostly sunny skies. Overnight lows
Tuesday night will be slightly warmer, in the middle to upper
50s.

Wednesday through Sunday...A return to more typical summertime
weather will begin Wednesday. Surface high pressure will
translate east of the region. While the region will stay dry,
southerly return flow will advect increasing amounts of heat and
moisture into the region. High temperatures on Wednesday will be
several degrees warmer, reaching the middle to upper 80s.
Humidity levels will still be tolerable, and overnight lows
Wednesday night will fall into the upper 50s to lower 60s.

For Thursday through Sunday, a more intense H5 ridge looks to
build over the region from the central Great Plains.
Temperatures at both 850 mb and 700 mb will rise to around the
95th percentile via the 12z/09 NAEFS ensemble guidance. This
will result in the hottest temperatures of the season so far
late this week. NBM ensemble guidance gives a 30-50% chance of
high temperatures exceeding 90 degrees on Thursday, and a 70-90%
chance on Friday. The ridging may relax slightly on Saturday,
but most areas will still have a 50-80% of exceeding 90 degrees
for daytime highs. The ridging will intensify on Sunday, with a
70-100% of highs in the 90s.

Dew point temperatures Thursday through Sunday will climb from
the lower to middle 60s on Thursday, to the middle to upper 60s
on Friday and Saturday. By Sunday, dew point temperatures will
be in the lower to middle 70s (sultry!). Our first triple digit
heat index values of the season appear likely during this
period.

Our next chance of mentionable precipitation arrives late Sunday
night into early next week. Model guidance is hinting at the
potential for tropical moisture to be drawn northward from the
Gulf of Mexico in the area, bringing increasing PoPs from south
to north. The details of the duration and intensity of this
rainfall will become more clear in the coming days.

&&

.AVIATION /12Z TAFS THROUGH 12Z TUESDAY/...
Issued at 655 AM CDT Mon Jun 10 2024

Any lingering BCFG at CGI, PAH, and MVN should be mixed out by
13z at the very latest. Otherwise, VFR conditions will be the
rule. SCT- BKN decks AOA 5-7kft will move into the region from
north to south from late morning into early this afternoon.
They will quickly dissipate by 24z, with clear skies forecast
thereafter. N-NW winds will pick up at 7-12 kts, with gusts
approaching 20 kts possible this afternoon at EVV and perhaps
OWB. Winds will relax tonight, becoming N to NNE.

&&

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

&&

$$

UPDATE...DWS
DISCUSSION...DWS
AVIATION...DWS