Area Forecast Discussion
Issued by NWS Louisville, KY
Issued by NWS Louisville, KY
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046 FXUS63 KLMK 011857 AFDLMK Area Forecast Discussion National Weather Service Louisville KY 257 PM EDT Sat Nov 1 2025 .KEY MESSAGES... * Cold November rain overspreads the region through this evening and into the overnight. Sunday trends drier through the day. * Total rainfall amounts are expected to range between .1" to .6", with the higher amounts in KY, and lower amounts in IN. * A drier and slightly milder pattern sets up for much of next of week. && .SHORT TERM /THROUGH SUNDAY/... Issued at 256 PM EDT Sat Nov 1 2025 Closed upper low will sink into the mid Mississippi River Valley through tonight, with deeper moisture pooling into our region ahead of this feature. Meanwhile, a surface cold front is already passing through the CWA, with cool advection taking over behind the system. Temps will likely begin falling across our western CWA before the typical peak heating window this afternoon. In fact, they already are. Temps currently in the 55 to 60 degree range will fall into the low and mid 40s tonight. The atmospheric column has been steadily saturating through the day, and recently picked up our first ob of measurable rainfall off the Logan County Mesonet site. Expect areas along and west of I-65 to gradually fill in with precip through sunset, and then more widespread coverage through the overnight. We`ll carry categorical pops over the KY portion of the CWA with high end likely to categorical pops over the IN counties. Overall, QPF will be fairly light, however we have seen a uptick in amounts across southern KY over the past 36 to 48 hours. There could be a swath of .5" to .7" amounts across our SW CWA, with most everyone else expected to see between .1" and .5" through Sunday morning. The closed upper low rotates through the TN Valley through tomorrow, with our widespread rainfall ending, and more scattered coverage lingering in our SE CWA. Most of the area will be drying out through the afternoon, however the Lake Cumberland region and I-75 corridor could still be holding onto a few light showers through the afternoon. Dry conditions take hold once again by evening with the system departing the area. Nothing lasts forever, even cold November rain. && .LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/... Issued at 256 PM EDT Sat Nov 1 2025 Sunday Night - Thursday Night... Closed upper low will rotate out of our region into the SE CONUS Sunday night, leaving our area dry for what will likely be an extended period of time going into next week. Progressive zonal flow aloft takes hold through the early to mid week time frame with surface high pressure also in control. This will yield an overall dry stretch with temperatures trending a little milder each day. On Wednesday, a clipper system moves through the Great Lakes region, which will drag a dry cool front through our area. Could get pretty mild ahead of this feature (highs 65 to 70) for what will likely be the warmest of the long term. Temps fall off just a bit on Thursday behind the front back to the low and mid 60s, but we begin to recover again heading toward Friday as southerly flow kicks in once again. Friday - Saturday... The next chance for some gusty showers arrives on Friday into the first part of Saturday as a shortwave trough and its associated surface low move across the Great Lakes region. We`ll see deeper moisture pool ahead of the trailing cold front and upper trough axis into our area. Timing of this system could still change a bit, although models seem to agree a bit more than yesterday that sometime Friday into Friday evening will be the main chance. Saturday looks drier with only a minor cool down behind the lead cool front. Another system quick on the heels could arrive for the late weekend timeframe, and may end up being a little more robust. && .AVIATION /18Z TAFS THROUGH 00Z MONDAY/... Issued at 153 PM EDT Sat Nov 1 2025 A slow moving disturbance will bring deteriorating conditions from our current VFR later this evening through the overnight. Ceilings will gradually lower into the MVFR range as the atmospheric column continues to saturate today. Expect MVFR by early evening at BWG, and late evening elsewhere at the other sites. Perhaps some brief IFR will occur (most likely at BWG) but not enough confidence to put in prevailing TAF at this time. Light rain chances will also increase during this time across the area which will likely reduce vis into the MVFR category through much of the overnight. A surface cold front will also be sliding through the area, so expect surface winds to take on a NW to N to NNE component with that progression. Things will dry up tomorrow morning, with ceilings trying to improve back to VFR through the morning hours toward midday. Surface winds will also veer around to a light NE and then E component by then. && .LMK WATCHES/WARNINGS/ADVISORIES... KY...None. IN...None. && $$ SHORT TERM...BJS LONG TERM...BJS AVIATION...BJS