kywx
Kentucky AI Weather Engine

Kentucky AI Forecasting Beta

Wed, Aug 5
Fri, Aug 7
Forecast For

Thursday, August 6

Updated Aug 6, 7:16 AM EDT

NWS Alerts Active This Day

Flood Advisory

Aug 5, 5:12 PM -> Aug 5, 8:15 PM
Minor Severity

Flood Advisory issued August 5 at 5:12PM EDT until August 5 at 8:15PM EDT by NWS Louisville KY

Flood Advisory

Aug 5, 5:25 PM -> Aug 5, 8:30 PM
Minor Severity

Flood Advisory issued August 5 at 5:25PM EDT until August 5 at 8:30PM EDT by NWS Louisville KY

Flood Advisory

Aug 5, 7:09 PM -> Aug 5, 10:15 PM
Minor Severity

Flood Advisory issued August 5 at 7:09PM EDT until August 5 at 10:15PM EDT by NWS Jackson KY

Flood Advisory

Aug 5, 7:23 PM -> Aug 5, 10:15 PM
Minor Severity

Flood Advisory issued August 5 at 7:23PM EDT until August 5 at 10:15PM EDT by NWS Jackson KY

Flood Advisory

Aug 5, 8:47 PM -> Aug 6, 12:00 AM
Minor Severity

Flood Advisory issued August 5 at 8:47PM EDT until August 6 at 12:00AM EDT by NWS Jackson KY

Flood Advisory

Aug 5, 8:49 PM -> Aug 6, 12:00 AM
Minor Severity

Flood Advisory issued August 5 at 8:49PM EDT until August 6 at 12:00AM EDT by NWS Jackson KY

Special Weather Statement

Aug 6, 4:46 AM -> Aug 6, 8:45 AM
Moderate Severity

Special Weather Statement issued August 6 at 4:46AM EDT by NWS Charleston WV

Dense Fog Advisory

Aug 6, 5:57 AM -> Aug 6, 9:00 AM
Moderate Severity

Dense Fog Advisory issued August 6 at 5:57AM EDT until August 6 at 9:00AM EDT by NWS Wilmington OH

Special Weather Statement

Aug 6, 6:00 AM -> Aug 6, 9:00 AM
Moderate Severity

Special Weather Statement issued August 6 at 6:00AM EDT by NWS Wilmington OH

Special Weather Statement

Aug 6, 5:09 PM -> Aug 6, 5:45 PM
Moderate Severity

Special Weather Statement issued August 6 at 5:09PM EDT by NWS Louisville KY

Special Weather Statement

Aug 6, 5:13 PM -> Aug 6, 5:45 PM
Moderate Severity

Special Weather Statement issued August 6 at 5:13PM EDT by NWS Charleston WV

Special Weather Statement

Aug 6, 5:20 PM -> Aug 6, 5:45 PM
Moderate Severity

Special Weather Statement issued August 6 at 5:20PM EDT by NWS Jackson KY

Special Weather Statement

Aug 6, 6:22 PM -> Aug 6, 7:00 PM
Moderate Severity

Special Weather Statement issued August 6 at 6:22PM EDT by NWS Charleston WV

Special Weather Statement

Aug 6, 6:30 PM -> Aug 6, 7:00 PM
Moderate Severity

Special Weather Statement issued August 6 at 6:30PM EDT by NWS Jackson KY

Flood Advisory

Aug 6, 6:42 PM -> Aug 6, 9:45 PM
Minor Severity

Flood Advisory issued August 6 at 6:42PM EDT until August 6 at 9:45PM EDT by NWS Jackson KY

Flood Advisory

Aug 6, 7:06 PM -> Aug 6, 10:15 PM
Minor Severity

Flood Advisory issued August 6 at 7:06PM EDT until August 6 at 10:15PM EDT by NWS Jackson KY

Flood Advisory

Aug 6, 7:11 PM -> Aug 6, 10:15 PM
Minor Severity

Flood Advisory issued August 6 at 7:11PM EDT until August 6 at 10:15PM EDT by NWS Jackson KY

Flood Advisory

Aug 6, 7:22 PM -> Aug 6, 10:30 PM
Minor Severity

Flood Advisory issued August 6 at 7:22PM EDT until August 6 at 10:30PM EDT by NWS Jackson KY

Flash Flood Warning

Aug 6, 7:39 PM -> Aug 6, 10:45 PM
Severe Severity

Flash Flood Warning issued August 6 at 7:39PM EDT until August 6 at 10:45PM EDT by NWS Jackson KY

Flood Advisory

Aug 6, 7:51 PM -> Aug 6, 10:45 PM
Minor Severity

Flood Advisory issued August 6 at 6:51PM CDT until August 6 at 9:45PM CDT by NWS Louisville KY

Flood Advisory

Aug 6, 7:53 PM -> Aug 6, 11:00 PM
Minor Severity

Flood Advisory issued August 6 at 7:53PM EDT until August 6 at 11:00PM EDT by NWS Jackson KY

Confidence
75%

Summer Heat vs. Mountain Downpours

A complex August setup will bring a sharp contrast to the Commonwealth. While the western half of the state remains hot and mostly dry under a building ridge, a vigorous shortwave trough will interact with deep tropical moisture in Southeast Kentucky, triggering heavy rainfall and localized flooding risks. Elsewhere, scattered nuisance showers and high humidity will prevail.

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

High confidence in the temperature gradient and moisture availability in the southeast, but lower confidence in the northern extent of measurable rainfall due to significant dry air in the lower levels.

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
Mostly Sunny and Warm
Sunny
85°/ 69°

Northwest Pennyrile

Owensboro, Henderson, Morganfield
Dry and Humid Afternoon
Cloudy
86°/ 70°

Southwest Pennyrile

NUISANCE
Hopkinsville, Madisonville, Princeton
Light Morning Showers
Rain
85°/ 71°

Barren River

NUISANCE
Bowling Green, Glasgow, Franklin
Humid with Scattered Rain
Rain
86°/ 70°

Louisville Metro

Louisville, La Grange, Shepherdsville
Hot and Muggy, Stray Shower
Cloudy
88°/ 73°

Lincoln Trail

NUISANCE
Elizabethtown, Bardstown, Leitchfield
Consistent Light Rain
Rain
85°/ 70°

Lake Cumberland

NUISANCE
Somerset, Columbia, Monticello
Afternoon Showers Expected
Rain
85°/ 68°

Northern Kentucky

Covington, Florence, Independence
Hot Near the River
Cloudy
89°/ 71°

Inner Bluegrass

NUISANCE
Lexington, Georgetown, Winchester
Late Evening Dampness
Rain
88°/ 69°

Bluegrass Foothills

NUISANCE
Richmond, Danville, Berea
Muggy with Evening Showers
Rain
86°/ 68°

Northeast Kentucky

Ashland, Morehead, Grayson
Stifling Afternoon Heat
Cloudy
91°/ 70°

Southeast Kentucky

IMPACTFUL
Hazard, Pikeville, Harlan
Heavy Rain and Localized Flooding
Heavy_Rain
83°/ 67°

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 moisture boundary stalls further north and convective cells 'train' over the same terrain in the Southeast, rainfall totals could exceed 2.5 inches, leading to more widespread flash flooding in narrow mountain valleys.

💨

The 'Bust' Scenario

If the western ridge builds more aggressively, it will shunt the shortwave further south, leaving the entire state hot and humid with only a few isolated sprinkles and no hydrologic concerns.

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 Coalfield Deluge Conflict

The NAM is an aggressive outlier, forecasting over 1.2 inches of rain in the Southeast due to high-resolution vorticity and terrain enhancement, while the GFS and Euro show more broad, light stratiform rain under 0.20 inches.

NAM
VS
GFS
VS
ECMWF
Why NAM Wins

The NAM's ability to resolve meso-scale vorticity peaks (0.00043) and its superior handling of orographic enhancement in the Kentucky coalfields makes it more reliable for localized heavy rain events in complex terrain.

Affected Regions
SOUTHEAST COALFIELDS

The North-Central Virga Battle

Models agree on high cloud cover and moisture, but the GFS predicts a deep, dry-mixed layer below 700mb that will evaporate most precipitation, whereas the Euro forecasts steady light rain reaching the surface.

GFS
VS
ECMWF
Why GFS Wins

The GFS handles the 'dry slot' and boundary layer mixing better in high-heat scenarios (near 90F). Given the low CAPE environment, the energy will likely be insufficient to overcome the large dewpoint depressions in the Metro areas.

Affected Regions
LOUISVILLE METRONORTHERN KYBLUEGRASS CORE

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

A warm, maritime tropical airmass is in place with a standard lapse rate. High surface temperatures in the 80s and 90s will contrast with a cooling, saturated column in the Southeast.

Thermal Boundary

A weak moisture boundary is stalled along the I-75 corridor, separating drier air to the northwest from deep saturation in the southeast.

Diurnal Trend

The diurnal curve will be typical for August, though it will be dampened in the south by cloud cover. Northern regions will see rapid morning heating.

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 synoptic front; weather is driven by a meso-scale shortwave axis moving west-to-east.

Jet Stream Support

Weak to moderate support from the right entrance region of a Great Lakes jet streak.

Energy Status

Vigorous shortwave energy (high vorticity) is present specifically in the Southeastern quadrant of the state.

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

Saturated column in the southeast; however, significant dewpoint depressions (>15F) in the north suggest high virga risk.

Precipitation Character

Convective and heavy in the southeast; stratiform and light elsewhere.

Flooding Context

Localized flash flood risk in the Southeast Coalfields due to high rain rates and steep terrain.

Celestial Almanac

Moon Phase

Last Quarter

44% Illumination
Moonrise
12:35 AM
Moonset
3:40 PM
Purchase Area
Sunrise
7:04 AM
Sunset
8:58 PM
Civil Dawn
6:36 AM
Civil Dusk
9:26 PM
Northwest Pennyrile
Sunrise
6:57 AM
Sunset
8:53 PM
Civil Dawn
6:28 AM
Civil Dusk
9:22 PM
Southwest Pennyrile
Sunrise
7:00 AM
Sunset
8:53 PM
Civil Dawn
6:32 AM
Civil Dusk
9:21 PM
Barren River
Sunrise
6:56 AM
Sunset
8:49 PM
Civil Dawn
6:28 AM
Civil Dusk
9:18 PM
Louisville Metro
Sunrise
6:51 AM
Sunset
8:49 PM
Civil Dawn
6:22 AM
Civil Dusk
9:18 PM
Lincoln Trail
Sunrise
6:52 AM
Sunset
8:48 PM
Civil Dawn
6:23 AM
Civil Dusk
9:17 PM
Lake Cumberland
Sunrise
6:48 AM
Sunset
8:42 PM
Civil Dawn
6:20 AM
Civil Dusk
9:10 PM
Northern Kentucky
Sunrise
6:44 AM
Sunset
8:46 PM
Civil Dawn
6:14 AM
Civil Dusk
9:15 PM
Inner Bluegrass
Sunrise
6:46 AM
Sunset
8:43 PM
Civil Dawn
6:17 AM
Civil Dusk
9:12 PM
Bluegrass Foothills
Sunrise
6:46 AM
Sunset
8:42 PM
Civil Dawn
6:17 AM
Civil Dusk
9:11 PM
Northeast Kentucky
Sunrise
6:38 AM
Sunset
8:37 PM
Civil Dawn
6:09 AM
Civil Dusk
9:06 PM
Southeast Kentucky
Sunrise
6:42 AM
Sunset
8:37 PM
Civil Dawn
6:14 AM
Civil Dusk
9:05 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.