Friday, June 5
NWS Alerts Active This Day
Air Quality Alert
Air Quality Alert issued June 4 at 12:00AM EDT by NWS Wilmington OH
The Southwest Ohio Air Quality Agency has issued an Air Quality Advisory for Butler, Clermont, Hamilton and Warren counties in Ohio; Boone, Campbell and Kenton counties in Kentucky; and Dearborn County in Indiana, until midnight EDT tonight. Levels of ozone within the region may approach or exceed unhealthy standards. On Alert days, help reduce ozone by taking the following actions: * Carpool, if possible, bike, walk or take the bus instead of driving alone. * Refuel your vehicle after 8 pm. * Do not idle your vehicle, exhaust contributes to air pollution. * Mow your lawn in the evening hours and avoid the use of gas-powered lawn equipment. For additional information, please visit the Southwest Ohio Air Quality Agency's web site at www.southwestohioair.org/local_air_quality
Air Quality Alert
Air Quality Alert issued June 4 at 10:22AM EDT by NWS Wilmington OH
The Southwest Ohio Air Quality Agency has issued an Air Quality Advisory for Butler, Clermont, Hamilton and Warren counties in Ohio; Boone, Campbell and Kenton counties in Kentucky; and Dearborn County in Indiana, until midnight EDT tonight. Levels of ozone within the region may approach or exceed unhealthy standards. On Alert days, help reduce ozone by taking the following actions: * Carpool, if possible, bike, walk or take the bus instead of driving alone. * Refuel your vehicle after 8 pm. * Do not idle your vehicle, exhaust contributes to air pollution. * Mow your lawn in the evening hours and avoid the use of gas-powered lawn equipment. For additional information, please visit the Southwest Ohio Air Quality Agency's web site at www.southwestohioair.org/local_air_quality
Air Quality Alert
Air Quality Alert issued June 4 at 2:59PM EDT by NWS Louisville KY
The Louisville Metro Air Pollution Control District and the Indiana Department of Environmental Management have issued an Air Quality Alert...IN EFFECT UNTIL MIDNIGHT EDT TONIGHT. A Code Orange Air Quality Alert for Ozone has been issued for the Louisville Metro Area. Orange: Members of sensitive groups may experience health effects. The general public is not likely to be affected. Sensitive groups include the elderly...children...persons with asthma or other breathing problems...and persons with lung and heart disease. People in these groups are advised to limit their outdoor activities to reduce their exposure to ozone and particulate pollution. For more information, visit the Louisville Metro Air Pollution Control District at http://www.louisvilleky.gov/apcd or the Indiana Department of Environmental Management at http://www.in.gov/idem.
Warm Sunshine and Blue Skies Across Kentucky
A dominant high-pressure system will provide Kentucky with a classic, dry summer day. Expect plenty of sunshine statewide with light southerly winds and temperatures reaching into the 80s.
Confidence Assessment
High model agreement on the lack of precipitation and the synoptic placement of the surface high. Diurnal temperature curves are predictable in this regime.
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
Expect a beautiful day with plenty of sunshine. Temperatures will reach the low 80s with a light breeze.
Northwest Pennyrile
A very warm day for Owensboro and Henderson. Sunshine will dominate through the evening.
Southwest Pennyrile
Skies will remain clear today with temperatures climbing into the mid-80s.
Barren River
A perfect early summer day for Bowling Green. Highs will be near 81 degrees.
Louisville Metro
Louisville will see temperatures reaching the mid-80s under sunny skies. Evening gusts are possible.
Lincoln Trail
Clear skies and comfortable humidity. Highs will reach the low 80s.
Lake Cumberland
Morning clouds will quickly clear, leaving a sun-filled day with highs near 82.
Northern Kentucky
Bright sunshine all day. Temperatures reach the mid-80s with some afternoon gusts.
Inner Bluegrass
Lexington will see sunny skies and warm temperatures near 82 degrees.
Bluegrass Foothills
Sunlight will dominate with a high of 81. Light winds throughout the day.
Northeast Kentucky
Ashland and Morehead will be some of the warmest spots, reaching 85 degrees under full sun.
Southeast Kentucky
Expect a beautiful day in the mountains. Highs in the low-to-mid 80s with calm winds.
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 boundary layer mixes more deeply than currently modeled (as hinted by the NAM), temperatures could overachieve by 2-3 degrees, pushing several locations into the upper 80s with occasional wind gusts exceeding 30 mph.
The 'Bust' Scenario
If high-level cirrus clouds arrive earlier and thicker than expected (per the ECMWF solution), solar insolation would be slightly mitigated, keeping afternoon highs in the upper 70s to low 80s.
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 Momentum Transfer Tug-of-War
The NAM is significantly more aggressive than the GFS and ECMWF regarding afternoon wind gusts. It suggests deeper boundary layer mixing will tap into 25-30kt winds at the 850mb level, while the global models keep surface gusts below 20 mph.
Why NAM Wins
Mesoscale models like the NAM typically resolve the diurnal boundary layer mixing and momentum transfer more accurately in a high-pressure, clear-sky regime.
Celestial Almanac
Waning Gibbous
Purchase Area
Northwest Pennyrile
Southwest Pennyrile
Barren River
Louisville Metro
Lincoln Trail
Lake Cumberland
Northern Kentucky
Inner Bluegrass
Bluegrass Foothills
Northeast Kentucky
Southeast Kentucky
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.