552
FXUS63 KPAH 081011
AFDPAH

Area Forecast Discussion
National Weather Service Paducah KY
511 AM CDT Sat Aug 8 2026

.KEY MESSAGES...

- There is a 20-30% chance of isolated showers and thunderstorms
  this afternoon and evening mainly across western Kentucky.

- Temperatures and humidity levels will continue to increase
  this weekend into next week, with heat index values near 100
  degrees today, and 100 to 105 degrees Sunday through
  Wednesday.

- Dry conditions return Sunday through Tuesday before more
  unsettled weather arrives for the latter half of the week with
  daily chances of showers and thunderstorms.

&&

.DISCUSSION...
Issued at 126 AM CDT Sat Aug 8 2026

An ongoing complex of stratiform rain with embedded thunder over
SEMO will continue to decay through early this morning to start the
weekend. By this afternoon, a H5 shortwave associated with a broad
upper level trough may initiate additional showers and
thunderstorms. Coverage will be fairy isolated and confined to
mainly western Kentucky, but did bump up NBM PoPs to a broad 20-30%
chance as the 0z CAMs are hinting at disorganized convection
developing during peak heating. While most locations will remain
dry, a few spots could pick up a quarter to half inch with localized
heavy downpours. Combined with an increase in cloud cover today,
peak heat index values now look to remain near 100 degrees. Skies
quickly clear out tonight with model soundings supporting the
potential for some patchy ground fog with a shallow inversion
developing overnight.

As a broad H5 ridge of high pressure builds east on Sunday, drier
conditions combined with abundant sunshine and southerly return flow
will yield more hot and humid conditions. Heat index values by the
NBM are now progged to rise between 100-105 degrees Sunday through
Wednesday, which would meet the 4 consecutive day criteria (100
degrees) for a Heat Advisory. However, daily shower and
thunderstorm chances quickly return by Wednesday which creates
some uncertainty as the other scenario would focus on the 1 day
criteria (105 degrees) for Monday and Tuesday. Regardless, heat
headlines will likely be needed in the near future. Daily rain
chances continue through the end of the week as a cold front
eventually provides relief with high temperatures trending out
of the lower 90s into the upper 80s by Friday. Some of the ML
guidance is hinting at some severe weather potential Wednesday
into Thursday, but it is highly contingent on the timing of the
front with the better kinematics progged north of the FA at this
time.

&&

.AVIATION /12Z TAFS THROUGH 12Z SUNDAY/...
Issued at 511 AM CDT Sat Aug 8 2026

Mainly VFR conditions are expected today with a slight chance
of an isolated shower or thunderstorm this afternoon and
evening. Probability is too low to include TAF mention, but
western Kentucky will have the greatest risk of seeing some
coverage. Otherwise, patchy ground fog is possible towards the
end of the TAF period. Winds will be south between 4-8 kts.

&&

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

&&

$$

DISCUSSION...DW
AVIATION...DW