Tuesday, June 16
Scattered Light Showers with Seasonable Afternoon Warmth
A weak atmospheric impulse will traverse the Commonwealth today, bringing widespread cloud cover and rounds of light, scattered rain showers primarily to the northern and western regions. While precipitation chances are high, a dry lower atmosphere will limit accumulations to mere trace amounts or a few hundredths of an inch. Southern Kentucky will remain largely dry with filtered sunshine.
Confidence Assessment
High agreement on temperatures and lack of severe weather. The primary uncertainty lies in the timing of the showers and whether the dry air prevents measurable rain at the surface.
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Purchase Area
Expect a mix of clouds and sun for the first half of the day, with clouds thickening by the afternoon. Light rain showers are likely to arrive late in the day. Temperatures will be warm, reaching the low 80s, so any rain will feel humid but not cooling.
Northwest Pennyrile
A gray day is in store with light rain showers and drizzle developing around midday and continuing through the evening. Total rainfall will be very light, but the persistent clouds will keep temperatures near 80 degrees.
Southwest Pennyrile
Most of the day will be dry with a mix of sun and clouds. Highs will reach the low 80s under light winds. Rain chances remain very low, as the moisture to the north struggles to move south.
Barren River
Expect filtered sunshine through a deck of high clouds today. Highs will reach the upper 70s with comfortable humidity. No rain is expected for Bowling Green and surrounding areas.
Louisville Metro
The city will see a pleasant day with temperatures near 80, but light rain showers will move in after 5 PM. Expect the rain to be very light, barely enough to wet the pavement in most spots.
Lincoln Trail
Light rain showers will pass through during the middle of the day. Highs will reach 76 degrees under breezy conditions. Rain totals will be very minimal, and the showers will be hit-or-miss.
Lake Cumberland
A beautiful day is expected around the lake with highs in the mid-70s and no rainfall. Winds will be light, making it a great day for outdoor activities.
Northern Kentucky
Expect a warm but windy afternoon with gusts up to 25 mph. Light rain showers will develop late in the day and into the night. The rainfall will be light, but the wind will make it feel slightly cooler after dark.
Inner Bluegrass
Showers are expected to pass through the Lexington area during the afternoon. Highs will be in the mid-70s. Rain will be very light and spotty, with many areas seeing only a trace.
Bluegrass Foothills
Expect a gray but mostly dry day with temperatures reaching 76 degrees. A stray sprinkle is possible but unlikely. The hills should stay dry through the evening hours.
Northeast Kentucky
After a cool start in the low 50s, the afternoon will warm up nicely before light showers arrive by sunset. Expect very light rain totals, with no significant impacts.
Southeast Kentucky
A beautiful summer day is in store for the mountains with highs in the upper 70s and clear to partly cloudy skies. Rain will stay well to the north and west of the region.
Possible Outcomes
Weather forecasting involves uncertainty. Below are two scenarios representing the range of possible outcomes: the "Boom" scenario shows the worst-case/highest-impact result if conditions align unfavorably, while the "Bust" scenario shows the best-case/lowest-impact result if the forecast doesn't materialize as expected.
The 'Boom' Scenario
If the low-level dry slot saturates faster than expected, widespread light rain could deposit 0.10" to 0.15" across the northern half of the state, turning a 'damp' day into a 'wet' one.
The 'Bust' Scenario
The 'Bust' occurs if the dry air remains robust. In this scenario, radar will show high reflectivity, but only a few stray sprinkles or 'virga' will be observed at the surface, leaving most areas dry.
Model Disagreements
When models disagree, a call must be made to determine the most likely outcome. This decision is based on a combination of factors including model performance, historical data, and the models general accounting of each climatic region of Kentucky.
The Virga Paradox
Models disagree on whether the mid-level moisture can overcome the substantial dry layer near the surface. GFS is the driest, while NAM and Euro suggest measurable light rain.
Why EURO Wins
The Euro provides a realistic middle ground, accounting for the synoptic lift of the jet streak while respecting the dry low-level profile. It avoids the NAM's typical light-precip 'bullseyes' and the GFS's tendency to over-dry shallow lift.
Evening Gust Front
GFS suggests significant wind gusts (25-30mph) in Northern KY associated with a weak pressure gradient, while NAM/Euro are much calmer.
Why GFS Wins
GFS typically handles the momentum transfer in the mixed boundary layer better than the NAM in non-convective setups. Expect some breezy conditions as the shortwave passes.
Celestial Almanac
Waxing Crescent
Purchase Area
Northwest Pennyrile
Southwest Pennyrile
Barren River
Louisville Metro
Lincoln Trail
Lake Cumberland
Northern Kentucky
Inner Bluegrass
Bluegrass Foothills
Northeast Kentucky
Southeast Kentucky
Dive Deeper Into the Models
This forecast is a synthesis of raw data from the NAM, GFS, ECMWF, and GEM models. These models provide detailed atmospheric analyses including 500mb vorticity, precipitation rates, and more. You can take a look at the raw model data by clicking the links below.