kywx
Kentucky AI Weather Engine

Kentucky AI Forecasting Beta

Sat, Feb 7
Mon, Feb 9
Forecast For

Sunday, February 8

Updated Feb 8, 6:08 AM EST

NWS Alerts Active This Day

Special Weather Statement

Feb 7, 1:35 PM -> Feb 7, 10:00 PM
Moderate Severity

Special Weather Statement issued February 7 at 1:35PM EST by NWS Jackson KY

Special Weather Statement

Feb 7, 2:25 PM -> Feb 7, 10:00 PM
Moderate Severity

Special Weather Statement issued February 7 at 2:25PM EST by NWS Louisville KY

Special Weather Statement

Feb 7, 9:25 PM -> Feb 8, 5:15 AM
Moderate Severity

Special Weather Statement issued February 7 at 9:25PM EST by NWS Jackson KY

Special Weather Statement

Feb 7, 9:39 PM -> Feb 8, 5:00 AM
Moderate Severity

Special Weather Statement issued February 7 at 9:39PM EST by NWS Louisville KY

Confidence
70%

Arctic Grip with Morning Clipper Snow Showers East

A frigid arctic air mass is entrenched across the Commonwealth. A weak clipper-style shortwave will graze Northern and Eastern Kentucky today, bringing light, high-ratio snow showers and flurries. The western half of the state will remain dry but chilly.

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

High agreement on the presence of the arctic air mass and the general track of the shortwave; however, the extremely low moisture content makes specific snowfall totals volatile due to sensitivity in snow-to-liquid ratios.

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

Paducah, Murray, Mayfield
Chilly and Mostly Cloudy
Cloudy
45°/ 26°

Northwest Pennyrile

Owensboro, Henderson, Morganfield
Brisk and Below Average
Cloudy
37°/ 22°

Southwest Pennyrile

Hopkinsville, Madisonville, Princeton
Dry and Cold Start
Cloudy
44°/ 24°

Barren River

Bowling Green, Glasgow, Franklin
Quiet and Cold
Cloudy
42°/ 22°

Louisville Metro

Louisville, La Grange, Shepherdsville
Stubbornly Below Freezing
Cloudy
31°/ 18°

Lincoln Trail

Elizabethtown, Bardstown, Leitchfield
Hard Freeze and Clouds
Cloudy
34°/ 18°

Lake Cumberland

Somerset, Columbia, Monticello
Bitterly Cold Overcast
Cloudy
37°/ 18°

Northern Kentucky

NUISANCE
Covington, Florence, Independence
Morning Snow Dusting
Snow
28°/ 10°

Inner Bluegrass

Lexington, Georgetown, Winchester
Bitter Cold and Breezy
Cloudy
30°/ 14°

Bluegrass Foothills

Richmond, Danville, Berea
Frigid and Grey
Cloudy
31°/ 15°

Northeast Kentucky

NUISANCE
Ashland, Morehead, Grayson
Light Snow Accumulations
Snow
25°/ 8°

Southeast Kentucky

NUISANCE
Hazard, Pikeville, Harlan
Light Mountain Snow Showers
Snow
31°/ 15°

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 DGZ saturation is deeper and SLRs reach 20:1, Northeast Kentucky could see localized totals approaching 1.5 inches, with a dusting extending as far west as the I-75 corridor.

💨

The 'Bust' Scenario

If the sub-cloud dry air (below 850mb) remains as robust as the NAM suggests, most of the snowfall will evaporate as virga, resulting in nothing more than scattered flurries and no accumulation.

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 Northeast QPF Conflict

The GFS is an outlier with higher moisture availability, suggesting up to 1 inch of snow in the Northeast, while the NAM and Euro keep totals closer to a half-inch due to sub-cloud evaporation.

GFS
VS
NAM
VS
EURO
Why EURO Wins

The Euro provides a steady middle-ground on moisture depth and handles the 'dry slot' south of the clipper better than the GFS's tendency to over-smear light precip.

Affected Regions
NORTHEAST KYBLUEGRASS CORENORTHERN KY

Western Warmth Gradient

The GEM and Euro are significantly more aggressive in scouring out arctic air in the Purchase area compared to the colder NAM.

GEM
VS
EURO
VS
NAM
Why GEM Wins

GEM's handling of the low-level thermal gradient in the post-frontal regime is often superior in the transition zones of Western Kentucky.

Affected Regions
PURCHASESOUTHWEST PENNYRILE

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

Deeply entrenched arctic air with a nearly isothermal profile in the lowest 2km. A strong subsidence inversion exists near 800mb across the west, while the northeast shows saturation within the DGZ.

Thermal Boundary

The effective freezing line is suppressed well south of the Kentucky/Tennessee border, keeping the entire Commonwealth in the cold sector.

Diurnal Trend

Non-diurnal trends in the north and east where persistent cloud cover and cold air advection (CAA) will limit the afternoon warm-up to just a few degrees.

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 secondary reinforcing arctic front moved through overnight, evidenced by a steady northerly wind and dewpoints crashing into the single digits.

Jet Stream Support

The region is under the right entrance region of a 110kt polar jet streak centered over the Great Lakes, providing broad synoptic lift.

Energy Status

A compact 500mb shortwave with a vorticity max of 1.7e-4 is the primary driver for today's clipper-like activity.

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

The column is mostly dry below 850mb, creating a significant virga risk. Saturation is limited to the 850-700mb layer in the northeast.

Precipitation Character

Strictly stratiform and light in nature; very low-density snow and flurries.

Flooding Context

Zero flooding risk; moisture content is negligible and frozen.

Winter Physics

Accumulation & Layers

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

Layer Analysis

Entire profile is below 0C. No warm nose present. P-type is 100% snow for any precipitation that reaches the ground.

Crystal Habit

Saturation squarely in the -12C to -18C range favors high-ratio, large-platelet dendritic crystals (fluffy powder).

Road Impact

While totals are light, road temperatures are well below freezing, meaning any snow will stick instantly to untreated surfaces.

Celestial Almanac

Moon Phase

Waning Gibbous

60% Illumination
Moonrise
12:42 AM
Moonset
11:08 AM
Purchase Area
Sunrise
7:52 AM
Sunset
6:27 PM
Civil Dawn
7:25 AM
Civil Dusk
6:54 PM
Northwest Pennyrile
Sunrise
7:47 AM
Sunset
6:20 PM
Civil Dawn
7:20 AM
Civil Dusk
6:47 PM
Southwest Pennyrile
Sunrise
7:47 AM
Sunset
6:23 PM
Civil Dawn
7:20 AM
Civil Dusk
6:50 PM
Barren River
Sunrise
7:43 AM
Sunset
6:19 PM
Civil Dawn
7:16 AM
Civil Dusk
6:46 PM
Louisville Metro
Sunrise
7:42 AM
Sunset
6:14 PM
Civil Dawn
7:15 AM
Civil Dusk
6:41 PM
Lincoln Trail
Sunrise
7:42 AM
Sunset
6:15 PM
Civil Dawn
7:14 AM
Civil Dusk
6:42 PM
Lake Cumberland
Sunrise
7:36 AM
Sunset
6:11 PM
Civil Dawn
7:09 AM
Civil Dusk
6:38 PM
Northern Kentucky
Sunrise
7:39 AM
Sunset
6:07 PM
Civil Dawn
7:11 AM
Civil Dusk
6:35 PM
Inner Bluegrass
Sunrise
7:37 AM
Sunset
6:09 PM
Civil Dawn
7:10 AM
Civil Dusk
6:37 PM
Bluegrass Foothills
Sunrise
7:36 AM
Sunset
6:09 PM
Civil Dawn
7:08 AM
Civil Dusk
6:36 PM
Northeast Kentucky
Sunrise
7:30 AM
Sunset
6:01 PM
Civil Dawn
7:03 AM
Civil Dusk
6:29 PM
Southeast Kentucky
Sunrise
7:30 AM
Sunset
6:05 PM
Civil Dawn
7:03 AM
Civil Dusk
6:32 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.