757 FXUS63 KPAH 072230 AFDPAHArea Forecast Discussion National Weather Service Paducah KY 530 PM CDT Sun Sep 7 2025
.KEY MESSAGES...
- Mostly clear skies with near to slightly below normal temperatures are forecast through the first half of the week.
- A week ending warmup will see temperatures return to near summer-like levels as the run of dry weather continues.
&&
.DISCUSSION... Issued at 100 PM CDT Sun Sep 7 2025
As an H8 and surface reflected 2ndary cold front completes passage, surface high pressure migrates from the Great Lakes states toward the Upper Ohio River Valley by this time tmrw. The N-NELY trajectories funnel in this pleasantly cool/dry air firmly across the entirety of the PAH FA, and as the air mass modifies eventually with more time, we become neutrally advective as H8 isotherms start to recover during the Mon-Tue time frame. This will lead us to another day of 75-80 degree highs with a good couple nights more with lows in the mid-upper 40s. Sensible weather mentions include the possibility of fog, but guidance suggests TDD depressions bottoming out in the 3F-9F range, so that`ll be more miss than hit and probably confined to prone locales right at and around sunrise. Afternoon considerations include RH drops to minimums around 30 or into the 20s percentile, but winds are kept at bay by the predominance of high pressure.
The upper synoptic height pattern transitions toward an omega block over the course of the latter half of the week. This reinvigorates the dominance of high pressure here, with H5 heights tuning upwards toward 590 DM and surface high pressure centering nearby around 1020 MB. H8 temps climb 5-10F, and sounding extrapolations suggest a surface reflected increase to above normal temperatures is in order, with highs reaching upwards to around 90 degrees, just above climo norms in the mid 80s. Dew points make a coincident jump into and thru the 50s, but dry wx conditions will nevertheless prevail for the entirety of the week.
&&
.AVIATION /00Z TAFS THROUGH 00Z TUESDAY/... Issued at 528 PM CDT Sun Sep 7 2025
The boundary layer will quickly decouple tonight with high pressure in control over the region. Due to low probability of exceeding the crossover temperatures with large dewpoint depressions today, did not include any mention of fog. Winds Monday morning increase to 6-7 kts from the east.
&&
.PAH WATCHES/WARNINGS/ADVISORIES... IL...None. MO...None. IN...None. KY...None.
&&
$$
DISCUSSION... AVIATION...DW
NWS PAH Office Area Forecast Discussion