kywx
Kentucky AI Weather Engine

Kentucky AI Forecasting Beta

Fri, Feb 20
Sun, Feb 22
Forecast For

Saturday, February 21

Updated Feb 21, 6:00 AM EST

NWS Alerts Active This Day

Flood Advisory

Feb 20, 2:28 PM -> Feb 21, 5:00 AM
Minor Severity

Flood Advisory issued February 20 at 2:28PM EST until February 21 at 4:00PM EST by NWS Jackson KY

Flood Advisory

Feb 20, 3:34 PM -> Feb 21, 6:00 AM
Minor Severity

Flood Advisory issued February 20 at 3:34PM EST until February 22 at 5:00AM EST by NWS Jackson KY

Flood Advisory

Feb 21, 4:40 AM -> Feb 21, 4:45 PM
Minor Severity

Flood Advisory issued February 21 at 4:40AM EST until February 22 at 7:00AM EST by NWS Jackson KY

Flood Advisory

Feb 21, 4:40 AM -> Feb 21, 4:45 PM
Minor Severity

Flood Advisory issued February 21 at 4:40AM EST until February 21 at 7:00PM EST by NWS Jackson KY

Winter Weather Advisory

Feb 21, 1:42 PM -> Feb 22, 12:00 AM
Moderate Severity

Winter Weather Advisory issued February 21 at 1:42PM EST until February 23 at 6:00PM EST by NWS Jackson KY

Special Weather Statement

Feb 21, 1:58 PM -> Feb 22, 12:00 AM
Moderate Severity

Special Weather Statement issued February 21 at 1:58PM EST by NWS Jackson KY

Special Weather Statement

Feb 21, 4:31 PM -> Feb 21, 8:00 PM
Moderate Severity

Special Weather Statement issued February 21 at 4:31PM EST by NWS Louisville KY

Confidence
70%

How Did We Do?

Comparing our AI forecast to actual observations from Saturday, February 21, 2026.

Temperature
±4.3°F
Average Error
Precipitation
±1.13"
Average Error
Wind Speed
±3.4mph
Average error

Regional Assessments

Purchase Area

Paducah, Murray, Mayfield
Temperature
Forecast
42° / 33°
Actual
47° / 36°
Error: -5°F high, -3°F low
Precipitation
Forecast
0"
Actual
6.82"
±6.82" off
Wind Speed
Forecast
9 / 18 mph
Actual
6 / 19 mph
Mesonet Stations HCKM, BAND

Northwest Pennyrile

Owensboro, Henderson, Morganfield
Temperature
Forecast
42° / 33°
Actual
48° / 33°
Error: -6°F high, 0°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
10 / 22 mph
Actual
6 / 19 mph
Mesonet Stations FRNY, RPTN, GRHM, DIXO

Southwest Pennyrile

Hopkinsville, Madisonville, Princeton
Temperature
Forecast
46° / 34°
Actual
48° / 36°
Error: -2°F high, -2°F low
Precipitation
Forecast
0"
Actual
4.97"
±4.97" off
Wind Speed
Forecast
11 / 20 mph
Actual
6 / 20 mph
Mesonet Stations PRNC, PGHL, ERLN, CADZ, CCTY

Barren River

Bowling Green, Glasgow, Franklin
Temperature
Forecast
51° / 35°
Actual
52° / 39°
Error: -1°F high, -4°F low
Precipitation
Forecast
0"
Actual
1.41"
±1.41" off
Wind Speed
Forecast
11 / 21 mph
Actual
6 / 22 mph
Mesonet Stations FARM, WDBY, EWPK

Louisville Metro

Louisville, La Grange, Shepherdsville
Temperature
Forecast
45° / 34°
Actual
45° / 33°
Error: 0°F high, 1°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
8 / 18 mph
Actual
5 / 16 mph
Mesonet Stations LGRN

Lincoln Trail

Elizabethtown, Bardstown, Leitchfield
Temperature
Forecast
46° / 34°
Actual
52° / 30°
Error: -6°F high, 4°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
9 / 19 mph
Actual
5 / 21 mph
Mesonet Stations CRMT, BLRK, CCLA, BRND, HARD

Lake Cumberland

Somerset, Columbia, Monticello
Temperature
Forecast
52° / 38°
Actual
57° / 38°
Error: -5°F high, 0°F low
Precipitation
Forecast
0"
Actual
0.33"
±0.33" off
Wind Speed
Forecast
8 / 20 mph
Actual
4 / 23 mph
Mesonet Stations PCWN, CMBA, GRDR, WOOD, GRBG

Northern Kentucky

Covington, Florence, Independence
Temperature
Forecast
42° / 30°
Actual
46° / 30°
Error: -4°F high, 0°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
7 / 14 mph
Actual
4 / 20 mph
Mesonet Stations HHTS, HUEY

Inner Bluegrass

Lexington, Georgetown, Winchester
Temperature
Forecast
46° / 34°
Actual
50° / 34°
Error: -4°F high, 0°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
8 / 15 mph
Actual
6 / 22 mph
Mesonet Stations LXGN, SPIN

Bluegrass Foothills

Richmond, Danville, Berea
Temperature
Forecast
48° / 36°
Actual
53° / 38°
Error: -5°F high, -2°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
8 / 14 mph
Actual
4 / 20 mph
Mesonet Stations LGNT

Northeast Kentucky

Ashland, Morehead, Grayson
Temperature
Forecast
49° / 36°
Actual
53° / 28°
Error: -4°F high, 8°F low
Precipitation
Forecast
0"
Actual
0"
✓ Within forecast range
Wind Speed
Forecast
5 / 13 mph
Actual
4 / 16 mph
Mesonet Stations MRHD, CHTR

Southeast Kentucky

Hazard, Pikeville, Harlan
Temperature
Forecast
51° / 38°
Actual
60° / 39°
Error: -9°F high, -1°F low
Precipitation
Forecast
0"
Actual
0.05"
✓ Within forecast range
Wind Speed
Forecast
5 / 12 mph
Actual
2 / 19 mph
Mesonet Stations BMBL, QKSD, BNVL, VEST, RFVC, RFSM, PBDY

A Chilly Front Brings Light Rain and Falling Temperatures

A moisture-starved cold front will sweep across Kentucky on Saturday, bringing scattered light rain showers and drizzle followed by a sharp drop in temperatures. Most precipitation will remain liquid, though a few flurries could mix in very late as moisture exits.

Why is this happening?
Technical explanation of the atmospheric setup
Confidence Assessment

High confidence exists for a cooling trend and high cloud cover. Confidence is lower regarding measurable precipitation totals due to the dry low-level air and the discrepancy between the GFS and other models regarding the rain-to-snow transition.

Get Personalized Forecasts

Choose which region in Kentucky you're interested in and we'll always show you that one first. You can change your selected region by clicking the "Star" icon on any regional forecast.

Purchase Area

NUISANCE
Paducah, Murray, Mayfield
Early Showers Give Way to Clouds
Rain
42°/ 33°

Northwest Pennyrile

Owensboro, Henderson, Morganfield
Gloomy Skies and Afternoon Drizzle
Cloudy
42°/ 33°

Southwest Pennyrile

NUISANCE
Hopkinsville, Madisonville, Princeton
Morning Dampness, Turning Breezy
Rain
46°/ 34°

Barren River

Bowling Green, Glasgow, Franklin
Mild Afternoon with Evening Sprinkles
Rain
51°/ 35°

Louisville Metro

NUISANCE
Louisville, La Grange, Shepherdsville
Cloudy Day with Evening Showers
Rain
45°/ 34°

Lincoln Trail

Elizabethtown, Bardstown, Leitchfield
Grey Skies with Late Rain
Rain
46°/ 34°

Lake Cumberland

Somerset, Columbia, Monticello
Mild and Mostly Dry Until Dark
Rain
52°/ 38°

Northern Kentucky

NUISANCE
Covington, Florence, Independence
Cold Rain Expected This Evening
Rain
42°/ 30°

Inner Bluegrass

NUISANCE
Lexington, Georgetown, Winchester
Late Rain Showers; No Snow Expected
Rain
46°/ 34°

Bluegrass Foothills

NUISANCE
Richmond, Danville, Berea
Evening Showers and Fog
Rain
48°/ 36°

Northeast Kentucky

NUISANCE
Ashland, Morehead, Grayson
Late Evening Mist and Rain
Rain
49°/ 36°

Southeast Kentucky

NUISANCE
Hazard, Pikeville, Harlan
Rain Moving into the Mountains Tonight
Rain
51°/ 38°

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

The 'Boom' scenario involves the GFS solution verifying, where deeper moisture trails the cold front. This would result in a quick burst of wet snow, potentially accumulating up to 1 inch on grassy surfaces in the Bluegrass and Southeast Coalfields.

💨

The 'Bust' Scenario

The 'Bust' scenario sees low-level dry air winning. Significant dewpoint depressions lead to most precipitation evaporating as virga, leaving the state with nothing more than a few sprinkles and overcast skies.

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 Void

Models disagree on how much rain actually reaches the ground. High PoPs (80%+) are countered by extremely low QPF (under 0.05"), suggesting a risk that dry air in the lowest 2km will evaporate the rain.

NAM
VS
GEM
VS
EURO
Why BLEND Wins

Utilizing a blend of NAM/GEM to account for higher resolution terrain-induced drizzle in the Foothills and Coalfields while respecting the overall dry synoptic signal.

Affected Regions
BLUEGRASS CORELOUISVILLE METROLINCOLN TRAIL

The Post-Frontal Snow Struggle

The GFS is an aggressive outlier, depicting deep moisture trailing the cold front (anafront structure) which allows for a 3-hour window of snow. The NAM, Euro, and GEM show a drier post-frontal environment where moisture departs before the column cools sufficiently for snow.

GFS
VS
NAM
VS
EURO
Why NAM Wins

The NAM and GEM better resolve the shallow nature of the cold air and the high-resolution moisture cut-off. Soundings suggest the 'Warm Nose' at 850mb does not erode fast enough to overlap with the primary moisture band.

Affected Regions
BLUEGRASS CORENORTHEAST KYSOUTHEAST COALFIELDSNORTHERN KY

Technical Analysis

This section provides a deep, physics-based explanation of the weather. Our AI system analyzed multiple atmospheric layers and variables from all available models to synthesize this technical overview.

Below you'll find detailed breakdowns of the atmospheric dynamics that are driving today's forecast, including thermodynamics, kinematics, and hydrology.

Thermodynamics

Stability & Temperatures

How temperature changes with altitude. This determines whether precipitation falls as rain, snow, sleet, or freezing rain based on the vertical temperature profile.

Thermal Profile Overview

The atmosphere features a well-mixed boundary layer ahead of the front, transitioning to a sharp surface-based inversion post-passage. The 0C isotherm at 850mb lags the surface front by 50-70 miles.

Thermal Boundary

The thermal boundary enters the Northwest near noon and clears the Southeast Coalfields shortly after midnight.

Diurnal Trend

Non-diurnal trends will be prevalent in Western KY with temperatures falling through the afternoon. Central and Eastern KY will see a standard diurnal rise followed by a sharp 10-15 degree drop post-sunset.

Kinematics

Wind & Energy

Wind patterns and atmospheric energy. Frontal passages, jet stream positioning, and vorticity tell us where and when lift will generate precipitation.

Frontal Passage

A weak but distinct cold front will cross the state, marked by a wind shift from SW to NW and a sudden increase in dewpoint depressions.

Jet Stream Support

Weak support is found in the right exit region of a 110kt polar jet streak, providing enough lift for light stratiform rain.

Energy Status

A compact shortwave trough with moderate vorticity is the primary energetic driver, though its amplitude is limited.

Hydrology

Moisture & Precipitation

Moisture content and precipitation character. This reveals whether the atmosphere is saturated enough to produce precipitation, and what type to expect (steady vs. bursts).

Saturation Status

Saturation is shallow and confined to the 900mb-750mb layer. Surface dewpoint depressions of 12-15F create a significant virga risk at onset.

Precipitation Character

Precipitation will be predominantly stratiform light rain, drizzle, or mist. Convective elements are not expected.

Flooding Context

No flooding risk exists; total liquid equivalent is forecast to be under 0.10 inches statewide.

Winter Physics

Accumulation & Layers

Specific physical factors affecting winter weather, including the vertical melt/freeze profile and snow quality.

Layer Analysis

The GFS is the only model showing a deep enough cold layer to support snow. NAM/Euro soundings show the column drying out just as the 850mb layer reaches 0C.

Crystal Habit

Should any flakes survive the dry air, they will be small, poorly formed plates rather than large dendrites due to marginal DGZ saturation.

Road Impact

Warm pavement temperatures in the 40s and 50s will melt any frozen hydrometeors on contact.

Celestial Almanac

Moon Phase

Waxing Crescent

18% Illumination
Moonrise
9:32 AM
Moonset
10:22 PM
Purchase Area
Sunrise
7:37 AM
Sunset
6:41 PM
Civil Dawn
7:11 AM
Civil Dusk
7:07 PM
Northwest Pennyrile
Sunrise
7:32 AM
Sunset
6:34 PM
Civil Dawn
7:05 AM
Civil Dusk
7:01 PM
Southwest Pennyrile
Sunrise
7:32 AM
Sunset
6:37 PM
Civil Dawn
7:06 AM
Civil Dusk
7:03 PM
Barren River
Sunrise
7:28 AM
Sunset
6:33 PM
Civil Dawn
7:02 AM
Civil Dusk
6:59 PM
Louisville Metro
Sunrise
7:27 AM
Sunset
6:28 PM
Civil Dawn
7:00 AM
Civil Dusk
6:55 PM
Lincoln Trail
Sunrise
7:27 AM
Sunset
6:29 PM
Civil Dawn
7:00 AM
Civil Dusk
6:56 PM
Lake Cumberland
Sunrise
7:21 AM
Sunset
6:25 PM
Civil Dawn
6:55 AM
Civil Dusk
6:51 PM
Northern Kentucky
Sunrise
7:23 AM
Sunset
6:22 PM
Civil Dawn
6:56 AM
Civil Dusk
6:49 PM
Inner Bluegrass
Sunrise
7:22 AM
Sunset
6:24 PM
Civil Dawn
6:55 AM
Civil Dusk
6:50 PM
Bluegrass Foothills
Sunrise
7:21 AM
Sunset
6:23 PM
Civil Dawn
6:54 AM
Civil Dusk
6:50 PM
Northeast Kentucky
Sunrise
7:15 AM
Sunset
6:16 PM
Civil Dawn
6:48 AM
Civil Dusk
6:42 PM
Southeast Kentucky
Sunrise
7:16 AM
Sunset
6:19 PM
Civil Dawn
6:49 AM
Civil Dusk
6:46 PM

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.