kywx
Kentucky AI Weather Engine

Kentucky AI Forecasting Beta

Sat, May 30
Mon, Jun 1
Forecast For

Sunday, May 31

Updated May 31, 7:16 AM EDT

NWS Alerts Active This Day

Flood Warning

May 30, 12:09 PM -> May 31, 2:15 PM
Severe Severity

Flood Warning issued May 30 at 11:09AM CDT until June 2 at 7:00AM CDT by NWS Paducah KY

Flood Warning

May 31, 11:38 AM -> Jun 1, 1:45 PM
Severe Severity

Flood Warning issued May 31 at 10:38AM CDT until June 3 at 1:00PM CDT by NWS Paducah KY

Special Weather Statement

May 31, 4:24 PM -> May 31, 5:00 PM
Moderate Severity

Special Weather Statement issued May 31 at 4:24PM EDT by NWS Jackson KY

Special Weather Statement

May 31, 4:54 PM -> May 31, 5:30 PM
Moderate Severity

Special Weather Statement issued May 31 at 4:54PM EDT by NWS Jackson KY

Special Weather Statement

May 31, 5:14 PM -> May 31, 5:30 PM
Moderate Severity

Special Weather Statement issued May 31 at 5:14PM EDT by NWS Jackson KY

Severe Thunderstorm Warning

May 31, 5:25 PM -> May 31, 6:00 PM
Severe Severity

Severe Thunderstorm Warning issued May 31 at 4:25PM CDT until May 31 at 5:00PM CDT by NWS Paducah KY

Special Weather Statement

May 31, 5:29 PM -> May 31, 6:00 PM
Moderate Severity

Special Weather Statement issued May 31 at 5:29PM EDT by NWS Jackson KY

Severe Thunderstorm Watch

May 31, 5:30 PM -> May 31, 7:00 PM
Severe Severity

Severe Thunderstorm Watch issued May 31 at 4:30PM CDT until May 31 at 6:00PM CDT by NWS Paducah KY

Special Weather Statement

May 31, 5:32 PM -> May 31, 6:00 PM
Moderate Severity

Special Weather Statement issued May 31 at 5:32PM EDT by NWS Jackson KY

Severe Thunderstorm Warning

May 31, 5:35 PM -> May 31, 6:00 PM
Severe Severity

Severe Thunderstorm Warning issued May 31 at 4:35PM CDT until May 31 at 5:00PM CDT by NWS Paducah KY

Special Weather Statement

May 31, 5:36 PM -> May 31, 6:00 PM
Moderate Severity

Special Weather Statement issued May 31 at 5:36PM EDT by NWS Jackson KY

Special Weather Statement

May 31, 5:39 PM -> May 31, 6:15 PM
Moderate Severity

Special Weather Statement issued May 31 at 5:39PM EDT by NWS Jackson KY

Special Weather Statement

May 31, 6:03 PM -> May 31, 6:45 PM
Moderate Severity

Special Weather Statement issued May 31 at 6:03PM EDT by NWS Jackson KY

Special Weather Statement

May 31, 6:19 PM -> May 31, 6:45 PM
Moderate Severity

Special Weather Statement issued May 31 at 6:19PM EDT by NWS Jackson KY

Severe Thunderstorm Watch

May 31, 6:20 PM -> May 31, 7:30 PM
Severe Severity

Severe Thunderstorm Watch issued May 31 at 5:20PM CDT until May 31 at 6:00PM CDT by NWS Paducah KY

Confidence
85%

Split Pattern: Southern Showers and Northern Sunshine

The final day of May will feature a distinct weather split across the Commonwealth. A weak atmospheric disturbance moving through the Tennessee Valley will bring light rain showers and overcast skies to southern and western Kentucky. Meanwhile, northern and central sections of the state will remain dry with plenty of sunshine as high pressure centered over the Great Lakes maintains its influence. No significant accumulation or severe weather is expected.

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

High confidence exists for the dry forecast in Northern and Central Kentucky. Confidence is slightly lower regarding the exact northern cutoff of light rain in the southern tier, though model consensus is growing.

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
Periods of Light Rain
Rain
83°/ 65°

Northwest Pennyrile

Owensboro, Henderson, Morganfield
Cloudy with Evening Showers
Cloudy
80°/ 60°

Southwest Pennyrile

NUISANCE
Hopkinsville, Madisonville, Princeton
Afternoon Showers Likely
Rain
83°/ 65°

Barren River

NUISANCE
Bowling Green, Glasgow, Franklin
Steadiest Rain in the State
Rain
82°/ 63°

Louisville Metro

Louisville, La Grange, Shepherdsville
Dry and Mostly Cloudy
Cloudy
80°/ 59°

Lincoln Trail

Elizabethtown, Bardstown, Leitchfield
Gray Skies; No Rain Expected
Cloudy
79°/ 58°

Lake Cumberland

NUISANCE
Somerset, Columbia, Monticello
Afternoon Rain Showers
Rain
83°/ 60°

Northern Kentucky

Covington, Florence, Independence
Beautiful Sunny Day
Sunny
77°/ 52°

Inner Bluegrass

Lexington, Georgetown, Winchester
Sunny and Mild
Sunny
77°/ 55°

Bluegrass Foothills

Richmond, Danville, Berea
Dry and Mostly Cloudy
Cloudy
80°/ 57°

Northeast Kentucky

Ashland, Morehead, Grayson
Crisp Morning, Warm Afternoon
Sunny
80°/ 51°

Southeast Kentucky

NUISANCE
Hazard, Pikeville, Harlan
Late Evening Sprinkles Possible
Rain
81°/ 58°

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

A more aggressive moisture surge allows light rain to push further north toward the I-64 corridor, with totals in the southern border counties reaching up to 0.25 inches.

💨

The 'Bust' Scenario

Dry air to the north successfully suppresses the moisture plume, limiting precipitation to nothing more than isolated sprinkles strictly along the Tennessee border.

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.

Southern Moisture Boundary

There is a clear disagreement regarding how far north the light precipitation shield will travel. The ECMWF and GFS are more aggressive with moisture reaching the Western Kentucky Parkway, while the NAM keeps the state almost entirely dry.

NAM
VS
GFS
VS
EURO
Why EURO Wins

The global models show better synoptic continuity regarding the shortwave track and the depth of the associated moisture plume, whereas the NAM appears to be an outlier in its extreme dryness for this event.

Affected Regions
PURCHASESOUTHWEST PENNYRILEBARREN RIVER

The Valley Radiational Cooling Battle

Models are conflicting on overnight low temperatures in the eastern valleys. The GFS suggests aggressive cooling into the mid-40s, while the NAM and ECMWF keep temperatures in the mid-50s due to expected cloud debris.

GFS
VS
NAM
VS
EURO
Why GFS Wins

With high pressure situated to the north and a very dry air mass in place over Northeast Kentucky, radiational cooling should maximize in the valleys before the arrival of any mid-level cloud cover.

Affected Regions
NORTHEAST KYBLUEGRASS FOOTHILLS

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 vertical temperature profile indicates a well-mixed boundary layer with standard adiabatic lapse rates. Surface temperatures are supported by 850mb temps ranging from +14C to +16C.

Thermal Boundary

The effective moisture boundary is stalled near the Western Kentucky Parkway, separating surface dewpoints in the 60s to the south from 50s to the north.

Diurnal Trend

A standard diurnal curve is expected, though it will be somewhat muted in southern regions due to persistent cloud cover and evaporative cooling from light rain.

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

No surface frontal passage is expected. The primary driver is a mid-level shortwave trough rather than a surface cold front.

Jet Stream Support

The region is positioned in the right entrance region of a 70-90kt jet streak located over the Great Lakes, providing modest synoptic lift for the southern half of the state.

Energy Status

A compact shortwave trough with weak positive vorticity advection (PVA) is pivoting through the Tennessee Valley.

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 atmospheric column is saturated below 700mb in the southern tier, while Northern Kentucky remains dry with dewpoint depressions exceeding 15F below 850mb, creating a high virga risk.

Precipitation Character

Precipitation will be purely stratiform, consisting of light rain and intermittent drizzle. Lack of CAPE precludes any convective or thunderstorm activity.

Flooding Context

No hydrologic concerns exist. Rainfall totals will be minimal and the ground is receptive to moisture.

Winter Physics

Accumulation & Layers

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

Layer Analysis

N/A - Freezing level is above 12,000 feet.

Crystal Habit

N/A

Road Impact

N/A

Celestial Almanac

Moon Phase

Full Moon

100% Illumination
Moonrise
9:02 PM
Moonset
6:25 AM
Purchase Area
Sunrise
6:37 AM
Sunset
9:09 PM
Civil Dawn
6:07 AM
Civil Dusk
9:39 PM
Northwest Pennyrile
Sunrise
6:30 AM
Sunset
9:05 PM
Civil Dawn
5:59 AM
Civil Dusk
9:35 PM
Southwest Pennyrile
Sunrise
6:34 AM
Sunset
9:04 PM
Civil Dawn
6:03 AM
Civil Dusk
9:34 PM
Barren River
Sunrise
6:29 AM
Sunset
9:00 PM
Civil Dawn
5:59 AM
Civil Dusk
9:30 PM
Louisville Metro
Sunrise
6:23 AM
Sunset
9:01 PM
Civil Dawn
5:52 AM
Civil Dusk
9:31 PM
Lincoln Trail
Sunrise
6:25 AM
Sunset
8:59 PM
Civil Dawn
5:54 AM
Civil Dusk
9:30 PM
Lake Cumberland
Sunrise
6:21 AM
Sunset
8:53 PM
Civil Dawn
5:51 AM
Civil Dusk
9:23 PM
Northern Kentucky
Sunrise
6:15 AM
Sunset
8:58 PM
Civil Dawn
5:44 AM
Civil Dusk
9:29 PM
Inner Bluegrass
Sunrise
6:18 AM
Sunset
8:55 PM
Civil Dawn
5:48 AM
Civil Dusk
9:26 PM
Bluegrass Foothills
Sunrise
6:18 AM
Sunset
8:53 PM
Civil Dawn
5:48 AM
Civil Dusk
9:24 PM
Northeast Kentucky
Sunrise
6:10 AM
Sunset
8:49 PM
Civil Dawn
5:39 AM
Civil Dusk
9:20 PM
Southeast Kentucky
Sunrise
6:15 AM
Sunset
8:47 PM
Civil Dawn
5:45 AM
Civil Dusk
9:18 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.