959 FXUS63 KJKL 132345 AFDJKLAREA FORECAST DISCUSSION National Weather Service Jackson KY 745 PM EDT Sat Sep 13 2025
.KEY MESSAGES...
- Mainly dry weather is expected to persist over the next week.
- Temperatures are forecast to be above normal well into next week.
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.UPDATE... Issued at 745 PM EDT SAT SEP 13 2025
High and mid-level clouds are streaming in from the north at mid- evening with an approaching disturbance. Low-end potential still exists for sprinkles or a little light rain overnight, primarily over the Daniel Boone NF/I-75 Corridor, and westward.
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.SHORT TERM...(This evening through Sunday night) Issued at 251 PM EDT SAT SEP 13 2025
Shortwave ridging over the area breaks down through the remainder of the weekend, with a disturbance moving across the area within northerly mid-level flow Sunday morning through Sunday evening on the backside of a weak longwave trough/low.
Models, some CAMS in particular, develop showers and possibly a few thunderstorms north of the Ohio River, with this activity moving south into northern Kentucky. Low-end PoPs have been carried over into our western and northwestern counties later this afternoon through tonight, and then extending south primarily along and west of the escarpment. Model soundings suggest any activity that reaches our CWA will be on a weakening/dissipating trend, with precipitation generated from mid-level clouds above a dry lower atmosphere. Thus, any shower activity that does occur is not likely to produce measureable rainfall.
Better instability arrives for Sunday with cooler temperatures aloft, but the lower levels will remain quite dry. Thus, have kept thunder chances quite low, with very low-end shower chances primarily over the far southwest in the morning to midday period, and then dry thereafter.
Temperatures continue their gradual warming trend, with lows tonight in the 50s to lower 60s rising on average about 1 to 3 degrees for Sunday night. Highs Sunday will reach into the 80s once again, with upper 80s possible toward the Bluegrass region.
.LONG TERM...(Monday through Saturday) Issued at 323 PM EDT SAT SEP 13 2025
By Monday, upper-level ridging and high pressure will be in place from the Great Lakes to the northeast. A weakening trough extending along the eastern seaboard into New Brunswick will begin to break apart, leaving a cutoff low off the Carolina coast. This will place eastern Kentucky in the confluence zone of easterly flow aloft under a Rex Block pattern for the first half of the week. Meanwhile, a shortwave trough starts to dig across the northern Plains, and this shortwave will continue eastward and push across the Great Lakes as the week progresses.
The Rex Block pattern will help sustain fairly consistent temperatures through the work week, with highs in the mid to upper 80s across the bulk of eastern Kentucky and in the 70s along the eastern KY ridgetops. NBM temperature spreads are low (2-3 degrees difference between 25th and 75th percentile values) indicating high confidence in temperatures remaining consistent. Overnight low temperatures are expected to stay in the low 60s. Areas of fog are expected to develop in the valleys in the early morning hours each day this week as well.
While winds are generally expected to remain light, afternoon relative humidity values are expected to drop into the 35-45% range Monday-Wednesday. The lowest relative humidity values will be furthest north, especially along and north of the I-64 corridor. With dry conditions expected to prevail through at least mid-week, fuels may dry out further, creating favorable conditions for burning.
Precip chances stay low (
NWS JKL Office Area Forecast Discussion