This is the ECMWF model's output only
You're viewing raw atmospheric data from the ECMWF (European Centre for Medium-Range Weather Forecasts (IFS)). This is just one model's interpretation and it may disagree with the other models.
Our AI uses this data (along with other models) to create the final forecast. Don't treat this as the definitive answer.
View the Synthesized Forecast InsteadSun and Warmth Prevail Across Kentucky
Residents can look forward to a beautiful and calm day on June 4th. Temperatures will be quite warm, reaching the low to mid-80s, which is perfect for outdoor activities. Light winds and low humidity will make the heat feel comfortable.
In western Kentucky, you may see some clouds drifting in during the afternoon, but they won't bring any rain. For central and eastern parts of the state, plenty of sunshine is expected from morning until evening.
Regional Conditions
PURCHASE
NORTHWEST PENNYRILE
SOUTHWEST PENNYRILE
BARREN RIVER
LOUISVILLE METRO
LINCOLN TRAIL
LAKE CUMBERLAND
NORTHERN KY
BLUEGRASS CORE
BLUEGRASS FOOTHILLS
NORTHEAST KY
SOUTHEAST COALFIELDS
Technical Analyses
To generate the forecast, our AI system analyzed multiple atmospheric layers and variables from the ECMWF model. Each chart below represents a different aspect of the atmosphere—from the jet stream at 30,000 feet down to surface conditions—providing crucial pieces of the weather puzzle.
The AI model extracted key meteorological features from each analysis, identified patterns and conflicts between different atmospheric levels, and synthesized this information into a coherent forecast. For example, surface temperatures might suggest snow, but upper-level warmth could mean rain instead. The model weighs these factors to determine the most likely outcome based on historical precedent.
Below you'll find detailed breakdowns of each atmospheric analysis that contributed to the forecast, including what the model shows and how it influences Kentucky's weather.
Thermodynamics
How temperature changes with altitude. This determines whether precipitation falls as rain, snow, sleet, or freezing rain based on the vertical temperature profile.
Standard adiabatic lapse rate dominates the daytime hours across the state. A shallow radiation inversion is likely in rural and valley locations between 3am and 7am, quickly mixing out by mid-morning.
No thermal boundaries or fronts are present; Kentucky is solidly within a warm, continental air mass.
Classic diurnal curve with peak heating between 20z and 22z. Overnight cooling will be efficient given low dewpoints.
Kinematics
Wind patterns and atmospheric energy. Frontal passages, jet stream positioning, and vorticity tell us where and when lift will generate precipitation.
None. Wind shifts are negligible, indicating a stagnant high-pressure regime.
Zonal flow aloft with the primary jet stream axis well north of the Ohio River. No significant upper-level support for vertical ascent.
Neutral vorticity. Stable anticyclonic flow at the surface and aloft.
Hydrology
Moisture content and precipitation character. This reveals whether the atmosphere is saturated enough to produce precipitation, and what type to expect (steady vs. bursts).
Atmospheric column is under-saturated. Average RH is below 40% in the 850-500mb layer.
None. Column is too dry to support even drizzle or virga.
No hydrologic concerns. Antecedent conditions are stable.
Quiet and Warm Conditions Persist Statewide
Expect a calm and pleasant day across the Commonwealth. Temperatures will climb into the low-to-mid 80s under a mix of sun and clouds. While you might notice some clouds building up by the evening, no rain is in the forecast, making it a great day for outdoor activities.
Humidity remains manageable, though the afternoon will feel warm as the sun remains the primary driver of our weather. No major storms or hazardous conditions are expected through the night.
Regional Conditions
PURCHASE
NORTHWEST PENNYRILE
SOUTHWEST PENNYRILE
BARREN RIVER
LOUISVILLE METRO
LINCOLN TRAIL
LAKE CUMBERLAND
NORTHERN KY
BLUEGRASS CORE
BLUEGRASS FOOTHILLS
NORTHEAST KY
SOUTHEAST COALFIELDS
Technical Analyses
To generate the forecast, our AI system analyzed multiple atmospheric layers and variables from the ECMWF model. Each chart below represents a different aspect of the atmosphere—from the jet stream at 30,000 feet down to surface conditions—providing crucial pieces of the weather puzzle.
The AI model extracted key meteorological features from each analysis, identified patterns and conflicts between different atmospheric levels, and synthesized this information into a coherent forecast. For example, surface temperatures might suggest snow, but upper-level warmth could mean rain instead. The model weighs these factors to determine the most likely outcome based on historical precedent.
Below you'll find detailed breakdowns of each atmospheric analysis that contributed to the forecast, including what the model shows and how it influences Kentucky's weather.
Thermodynamics
How temperature changes with altitude. This determines whether precipitation falls as rain, snow, sleet, or freezing rain based on the vertical temperature profile.
The vertical temperature stack is characterized by a standard adiabatic lapse rate with no significant inversions or capping. Surface temps in the 80s transition to a mild 850mb layer.
Statewide warm sector; the nearest thermal boundary is well to the north near the Great Lakes.
Standard diurnal curve with no non-diurnal fluctuations expected.
Kinematics
Wind patterns and atmospheric energy. Frontal passages, jet stream positioning, and vorticity tell us where and when lift will generate precipitation.
None; conditions are synoptically quiet.
The Jet Stream is in a zonal configuration across the Ohio Valley, providing no significant lift or divergence over Kentucky.
Neutral vorticity environment with broad anticyclonic flow at the surface.
Hydrology
Moisture content and precipitation character. This reveals whether the atmosphere is saturated enough to produce precipitation, and what type to expect (steady vs. bursts).
The atmospheric column is significantly undersaturated in the lower levels (850-700mb) with dewpoint depressions exceeding 15°F. High clouds are non-precipitating.
None.
Ground is stable with no hydrologic threats.
Humid and Damp with Scattered Light Showers
Expect a gray and humid Saturday across the Commonwealth. While many of us will see rain at some point, it will mostly be light and shouldn't cause any major issues for outdoor plans beyond some damp pavement. Temperatures will remain warm, reaching the mid-80s in many spots.
The highest chances for rain will be in western and northern Kentucky, while the southeastern mountains will likely stay mostly dry but cloudy. No storms are expected, so you won't need to worry about lightning or thunder.
Regional Conditions
PURCHASE
NORTHWEST PENNYRILE
SOUTHWEST PENNYRILE
BARREN RIVER
LOUISVILLE METRO
LINCOLN TRAIL
LAKE CUMBERLAND
NORTHERN KY
BLUEGRASS CORE
BLUEGRASS FOOTHILLS
NORTHEAST KY
SOUTHEAST COALFIELDS
Technical Analyses
To generate the forecast, our AI system analyzed multiple atmospheric layers and variables from the ECMWF model. Each chart below represents a different aspect of the atmosphere—from the jet stream at 30,000 feet down to surface conditions—providing crucial pieces of the weather puzzle.
The AI model extracted key meteorological features from each analysis, identified patterns and conflicts between different atmospheric levels, and synthesized this information into a coherent forecast. For example, surface temperatures might suggest snow, but upper-level warmth could mean rain instead. The model weighs these factors to determine the most likely outcome based on historical precedent.
Below you'll find detailed breakdowns of each atmospheric analysis that contributed to the forecast, including what the model shows and how it influences Kentucky's weather.
Thermodynamics
How temperature changes with altitude. This determines whether precipitation falls as rain, snow, sleet, or freezing rain based on the vertical temperature profile.
Warm and humid tropospheric column. Lapse rates are nearly moist-adiabatic with no significant inversions or freezing layers.
Freezing level is located near 14,000 feet AGL. No surface thermal boundaries present.
Standard diurnal curve suppressed by 80-100% cloud cover. Surface dewpoints in the upper 60s will limit overnight cooling.
Kinematics
Wind patterns and atmospheric energy. Frontal passages, jet stream positioning, and vorticity tell us where and when lift will generate precipitation.
None. Kentucky remains in a broad, poorly defined warm sector.
The jet stream is positioned well to the north with a moderate 70-90kt core over the Great Lakes, providing only weak large-scale ascent.
Vorticity is neutral to slightly positive, but lacks a discrete shortwave trigger to organize precipitation.
Hydrology
Moisture content and precipitation character. This reveals whether the atmosphere is saturated enough to produce precipitation, and what type to expect (steady vs. bursts).
Deep low-level saturation (1000-850mb) across the north and west, with a dry slot persisting over the southeast.
Precipitation will be stratiform in nature, characterized by light rain and intermittent drizzle. Lack of instability (0 J/kg CAPE) precludes any convective bursts or lightning.
No hydrologic concerns. Total rainfall amounts are expected to be less than 0.15 inches statewide, and soils are currently within seasonal moisture norms.
Soggy Sunday Across the Commonwealth
Expect a wet and overcast day for most of Kentucky this Sunday. Rain will be most persistent in the morning hours across the western regions before gradually becoming more intermittent in the afternoon.
Temperatures will remain warm but muted by heavy cloud cover, with most areas seeing highs in the upper 70s to low 80s. While it will be damp, the risk for severe weather or flooding is currently very low.
Regional Conditions
PURCHASE
NORTHWEST PENNYRILE
SOUTHWEST PENNYRILE
BARREN RIVER
LOUISVILLE METRO
LINCOLN TRAIL
LAKE CUMBERLAND
NORTHERN KY
BLUEGRASS CORE
BLUEGRASS FOOTHILLS
NORTHEAST KY
SOUTHEAST COALFIELDS
Technical Analyses
To generate the forecast, our AI system analyzed multiple atmospheric layers and variables from the ECMWF model. Each chart below represents a different aspect of the atmosphere—from the jet stream at 30,000 feet down to surface conditions—providing crucial pieces of the weather puzzle.
The AI model extracted key meteorological features from each analysis, identified patterns and conflicts between different atmospheric levels, and synthesized this information into a coherent forecast. For example, surface temperatures might suggest snow, but upper-level warmth could mean rain instead. The model weighs these factors to determine the most likely outcome based on historical precedent.
Below you'll find detailed breakdowns of each atmospheric analysis that contributed to the forecast, including what the model shows and how it influences Kentucky's weather.
Thermodynamics
How temperature changes with altitude. This determines whether precipitation falls as rain, snow, sleet, or freezing rain based on the vertical temperature profile.
The vertical temperature profile is nearly pseudo-adiabatic across the state. Surface temperatures in the 70s and 80s meet dewpoints in the upper 60s, creating a very moist but stable environment.
No thermal boundaries are present; the state is fully entrenched in a maritime tropical air mass.
The diurnal temperature curve is significantly flattened due to nearly 100% cloud cover and high surface moisture.
Kinematics
Wind patterns and atmospheric energy. Frontal passages, jet stream positioning, and vorticity tell us where and when lift will generate precipitation.
None. No wind shifts or pressure surges noted in GRIB2 output.
A moderate subtropical jet streak is positioned to our north, placing Kentucky in the favorable right-entrance region for large-scale synoptic lift.
The region is under broad cyclonic flow, but lacks a discrete shortwave trough to organize the precipitation into convective bands.
Hydrology
Moisture content and precipitation character. This reveals whether the atmosphere is saturated enough to produce precipitation, and what type to expect (steady vs. bursts).
Deep layer saturation is evident from the surface through 400mb. Minimal risk of virga as the sub-cloud layer is well-saturated.
Predominantly stratiform rain. Vertical velocity fields (Omega) are weak but consistent.
Hydrologic conditions are stable. Total rainfall amounts are well below flash flood guidance for all basins.
Soggy Monday Ahead with Statewide Rain and Damp Conditions
Prepare for a wet start to the week as a steady rain system moves through Kentucky from west to east. While no severe weather or thunderstorms are expected, the rainfall will be consistent and could make for a messy morning and afternoon commute.
Temperatures will stay relatively steady, mostly in the 70s, due to the thick blanket of clouds overhead. Expect damp conditions to persist through the evening before the heaviest rain begins to taper off late at night.
Regional Conditions
PURCHASE
NORTHWEST PENNYRILE
SOUTHWEST PENNYRILE
BARREN RIVER
LOUISVILLE METRO
LINCOLN TRAIL
LAKE CUMBERLAND
NORTHERN KY
BLUEGRASS CORE
BLUEGRASS FOOTHILLS
NORTHEAST KY
SOUTHEAST COALFIELDS
Technical Analyses
To generate the forecast, our AI system analyzed multiple atmospheric layers and variables from the ECMWF model. Each chart below represents a different aspect of the atmosphere—from the jet stream at 30,000 feet down to surface conditions—providing crucial pieces of the weather puzzle.
The AI model extracted key meteorological features from each analysis, identified patterns and conflicts between different atmospheric levels, and synthesized this information into a coherent forecast. For example, surface temperatures might suggest snow, but upper-level warmth could mean rain instead. The model weighs these factors to determine the most likely outcome based on historical precedent.
Below you'll find detailed breakdowns of each atmospheric analysis that contributed to the forecast, including what the model shows and how it influences Kentucky's weather.
Thermodynamics
How temperature changes with altitude. This determines whether precipitation falls as rain, snow, sleet, or freezing rain based on the vertical temperature profile.
The vertical temperature profile is characterized by a moist adiabatic lapse rate across the state. There is no evidence of a 'warm nose' or elevated inversions, as the entire column from the surface to the tropopause remains well above freezing.
The thermal boundary (freezing line) is located far to the north of the Ohio River, placing Kentucky entirely within a warm, moist maritime tropical airmass.
The temperature trend is non-diurnal in the western half of the state where precipitation and 100% cloud cover will keep highs in the mid-70s. In the east, a standard diurnal curve is more apparent before saturation occurs later in the afternoon.
Kinematics
Wind patterns and atmospheric energy. Frontal passages, jet stream positioning, and vorticity tell us where and when lift will generate precipitation.
No frontal passage is observed. The weather is driven by isentropic upglide (overrunning) as moisture-laden air is forced over a broad, flat baroclinic zone.
Moderate jet support is provided by an 80-100kt jet streak at 300mb. Kentucky is positioned in the right entrance region, which favors synoptic-scale divergence and rising motion.
Broad cyclonic flow and weak shortwave vorticity are moving through the zonal flow, providing steady but unremarkable lift.
Hydrology
Moisture content and precipitation character. This reveals whether the atmosphere is saturated enough to produce precipitation, and what type to expect (steady vs. bursts).
The atmospheric column is deeply saturated. High precipitable water (PWAT) values suggest high efficiency for rainfall. There is a minor 'Virga' risk in the East early in the day where dewpoint depressions are slightly wider (around 10-12F).
The precipitation is primarily 'Stratiform' in nature, characterized by steady, light-to-moderate rain rates without convective bursts.
Hydrologic risk is very low. While the ground is receptive, the absence of 'training' storms or convective rainfall rates should preclude any flash flooding concerns.
Widespread Rain Showers to Diminish by Evening
Kentucky will see a damp start to the day on June 9th as a wave of rain moves through the region. Most areas will experience steady light rain during the morning hours, making for a wet commute. Temperatures will remain mild, generally reaching the upper 70s to low 80s, though the clouds and rain will keep it feeling slightly humid.
By the afternoon, the rain will begin to break up and move into Eastern Kentucky. Residents in Western and Central Kentucky should see some clearing by the evening hours, while the mountains may hold onto the clouds and a few lingering drizzles until after sunset. No severe weather or thunderstorms are expected.
Regional Conditions
PURCHASE
NORTHWEST PENNYRILE
SOUTHWEST PENNYRILE
BARREN RIVER
LOUISVILLE METRO
LINCOLN TRAIL
LAKE CUMBERLAND
NORTHERN KY
BLUEGRASS CORE
BLUEGRASS FOOTHILLS
NORTHEAST KY
SOUTHEAST COALFIELDS
Technical Analyses
To generate the forecast, our AI system analyzed multiple atmospheric layers and variables from the ECMWF model. Each chart below represents a different aspect of the atmosphere—from the jet stream at 30,000 feet down to surface conditions—providing crucial pieces of the weather puzzle.
The AI model extracted key meteorological features from each analysis, identified patterns and conflicts between different atmospheric levels, and synthesized this information into a coherent forecast. For example, surface temperatures might suggest snow, but upper-level warmth could mean rain instead. The model weighs these factors to determine the most likely outcome based on historical precedent.
Below you'll find detailed breakdowns of each atmospheric analysis that contributed to the forecast, including what the model shows and how it influences Kentucky's weather.
Thermodynamics
How temperature changes with altitude. This determines whether precipitation falls as rain, snow, sleet, or freezing rain based on the vertical temperature profile.
A deep, moist tropical profile is evident across the state with standard lapse rates and no significant temperature inversions. Surface temperatures in the 70s and 80s preclude any frozen precipitation.
The primary moisture boundary is currently progressing through Central Kentucky and is expected to clear the Appalachian foothills by midnight.
The diurnal curve is muted due to 80-100% cloud cover and ongoing precipitation, with a lower-than-average spread between high and low temperatures.
Kinematics
Wind patterns and atmospheric energy. Frontal passages, jet stream positioning, and vorticity tell us where and when lift will generate precipitation.
A weak surface trough will pass through from west to east between 18Z and 03Z, marked by a slight wind shift to the west but minimal temperature advection.
Kentucky sits in the right entrance region of a 100kt jet streak over the Great Lakes, providing enough large-scale lift to support widespread stratiform rain.
Energy is characterized by a broad, positive-tilt shortwave trough with weak vorticity maxima rotating through the base.
Hydrology
Moisture content and precipitation character. This reveals whether the atmosphere is saturated enough to produce precipitation, and what type to expect (steady vs. bursts).
The column is nearly saturated from the surface to 700mb. Minimal virga risk as dewpoint depressions are less than 5 degrees across the precip shield.
Precipitation is entirely stratiform. Without CAPE, convective rain rates are not anticipated. Expect steady light to moderate rain.
Rainfall totals are well below flash flood thresholds. Soil saturation is moderate, but the slow rain rate will allow for efficient infiltration.
Soggy and Humid Conditions Prevail Statewide
Keep the umbrella handy for June 10th. A persistent wave of light to moderate rain will move through the state starting in the early morning hours and lingering through the evening.
Temperatures will be relatively muggy, staying in the 70s for most, though parts of Western and Northeastern Kentucky could see briefly warmer conditions if the clouds thin out. No severe weather or heavy winds are expected, making this more of a nuisance rain than a major storm event.
Regional Conditions
PURCHASE
NORTHWEST PENNYRILE
SOUTHWEST PENNYRILE
BARREN RIVER
LOUISVILLE METRO
LINCOLN TRAIL
LAKE CUMBERLAND
NORTHERN KY
BLUEGRASS CORE
BLUEGRASS FOOTHILLS
NORTHEAST KY
SOUTHEAST COALFIELDS
Technical Analyses
To generate the forecast, our AI system analyzed multiple atmospheric layers and variables from the ECMWF model. Each chart below represents a different aspect of the atmosphere—from the jet stream at 30,000 feet down to surface conditions—providing crucial pieces of the weather puzzle.
The AI model extracted key meteorological features from each analysis, identified patterns and conflicts between different atmospheric levels, and synthesized this information into a coherent forecast. For example, surface temperatures might suggest snow, but upper-level warmth could mean rain instead. The model weighs these factors to determine the most likely outcome based on historical precedent.
Below you'll find detailed breakdowns of each atmospheric analysis that contributed to the forecast, including what the model shows and how it influences Kentucky's weather.
Thermodynamics
How temperature changes with altitude. This determines whether precipitation falls as rain, snow, sleet, or freezing rain based on the vertical temperature profile.
Entire column is above freezing, with the 0C isotherm located above 12k feet. Surface temperatures remain between 68F and 82F, precluding any wintry precipitation. Lapse rates are near-saturated adiabatic throughout the day.
The thermal boundary (freezing line) is well north of the Great Lakes; Kentucky is fully entrenched in a maritime tropical airmass.
Non-diurnal tendencies are expected due to overcast conditions; however, temperatures will slowly rise through the morning as the sun attempts to penetrate the cloud deck.
Kinematics
Wind patterns and atmospheric energy. Frontal passages, jet stream positioning, and vorticity tell us where and when lift will generate precipitation.
No frontal passage. This is an airmass-driven precipitation event within a broad area of low pressure and high moisture content.
The region is positioned in the 'warm sector' of a broad system with no distinct jet streak support, leading to limited lift and stratiform rain.
Vorticity is negligible; the rain is primarily the result of moist isentropic upglide on the 305K-310K surfaces.
Hydrology
Moisture content and precipitation character. This reveals whether the atmosphere is saturated enough to produce precipitation, and what type to expect (steady vs. bursts).
The column is mostly saturated, though Northeast and Southeast Kentucky show some dry air in the 700-500mb layer, which will likely result in virga.
Predominantly stratiform light rain and drizzle. Rain rates will remain below 0.10 inches per hour.
Soil moisture is moderate, but rainfall totals are far below flash flood guidance. No hydrologic concerns.
Widespread Rain and Humid Conditions Expected Across the Commonwealth
Keep the umbrella handy for the duration of the day. A steady rain will move in early and continue through most of the morning and early afternoon. While we aren't expecting severe weather or thunderstorms, the rain will be consistent enough to keep things damp and gray.
Temperatures will remain relatively warm but held in check by the thick cloud cover. Expect highs in the mid-to-upper 70s for most, with the western parts of the state potentially reaching the lower 80s if any breaks in the clouds develop late in the day. Conditions will remain muggy through the evening.
Regional Conditions
PURCHASE
NORTHWEST PENNYRILE
SOUTHWEST PENNYRILE
BARREN RIVER
LOUISVILLE METRO
LINCOLN TRAIL
LAKE CUMBERLAND
NORTHERN KY
BLUEGRASS CORE
BLUEGRASS FOOTHILLS
NORTHEAST KY
SOUTHEAST COALFIELDS
Technical Analyses
To generate the forecast, our AI system analyzed multiple atmospheric layers and variables from the ECMWF model. Each chart below represents a different aspect of the atmosphere—from the jet stream at 30,000 feet down to surface conditions—providing crucial pieces of the weather puzzle.
The AI model extracted key meteorological features from each analysis, identified patterns and conflicts between different atmospheric levels, and synthesized this information into a coherent forecast. For example, surface temperatures might suggest snow, but upper-level warmth could mean rain instead. The model weighs these factors to determine the most likely outcome based on historical precedent.
Below you'll find detailed breakdowns of each atmospheric analysis that contributed to the forecast, including what the model shows and how it influences Kentucky's weather.
Thermodynamics
How temperature changes with altitude. This determines whether precipitation falls as rain, snow, sleet, or freezing rain based on the vertical temperature profile.
The vertical temperature profile across the Commonwealth is characteristic of a moist, tropical-like airmass. Surface temperatures in the 70s to low 80s match well with 850mb temperatures around 16-18°C, suggesting a nearly pseudo-adiabatic lapse rate. No significant thermal inversions are noted.
The entire state is positioned within the warm sector, with the primary baroclinic zone located well to the north across the Great Lakes.
The diurnal curve is heavily muted due to thick stratocumulus cover and ongoing precipitation, resulting in a narrow temperature spread of only 7-12 degrees between highs and lows.
Kinematics
Wind patterns and atmospheric energy. Frontal passages, jet stream positioning, and vorticity tell us where and when lift will generate precipitation.
No frontal passage is observed during this period. The system is an open-wave shortwave trough with weak surface reflection.
The region is positioned under the right-entrance region of a 90kt upper-level jet streak, providing the synoptic-scale divergence necessary for widespread lift.
A broad, positively-tilted shortwave is pivoting through the Ohio Valley, providing weak but sufficient vorticity for persistent stratiform rain.
Hydrology
Moisture content and precipitation character. This reveals whether the atmosphere is saturated enough to produce precipitation, and what type to expect (steady vs. bursts).
Soundings indicate a saturated column from the surface up to 400mb. Dewpoint depressions are less than 3°F throughout the lowest 3km, eliminating any risk of virga or sub-cloud evaporation.
Precipitation will be purely stratiform. While liquid totals are moderate, rain rates will remain low (generally <0.10" per hour) due to the lack of convective instability.
Antecedent conditions are average, and the forecasted 0.25-0.45 inches of rain will easily be absorbed by the soil with no hydrologic concerns.