Winter Weather Banner

Products we issue:

Blizzard Warning Sustained winds or frequent gusts of at least 35mph and considerable falling or blowing snow with visibilities ≤ 1/4 mile for at least three hours
Winter Storm Warning Snowfall totaling at least 4 inches in 12 hours or 6 inches in 24 hours, possibly mixed with sleet and/or freezing rain.  May be issued for less than four inches of snow if sleet and/or freezing rain will be significant.
Ice Storm Warning Ice from freezing rain accumulating to at least 1/4" (Ice Storm Warnings are rare, for if sleet and/or snow are also expected, a Winter Storm Warning will be issued)
Wind Chill Warning Wind chill ≤ -25° with wind speeds of at least 10 mph
Freeze Warning Temperatures ≤30° for at least two hours during the growing season
 Winter Weather Advisory Snowfall totaling 1"-4" in 12 hours, possibly mixed with sleet and/or freezing rain.   May be issued for lesser amounts of snow if sleet and/or freezing rain will be significant.
Travelers Advisory Issued for non-precipitation impacts such as black ice, a flash freeze, or poor road conditions after precipitation has ended (except following a warning-level event when it is obvious that roads are bad).  May be issued for very light freezing drizzle.
Wind Chill Advisory Wind chill of -10°F to -24°F with wind speeds of at least 10 mph
Frost Advisory Widespread frost expected with temperatures of 31°-35°F for at least two hours


In addition to the strict criteria listed above, we also take public impact into consideration.  For example, if snow squalls hit a metropolitan area right at rush hour we may issue a Winter Weather Advisory even if less than an inch of snowfall is expected since a quick snowfall on crowded roads can cause significant problems.  Conversely, if a quick-hitting light snow passes through in the middle of the night over a weekend, and amounts are expected to be near or even slightly above the 1" criteria for snowfall, we may handle the event with Special Weather Statements rather than issuing an advisory for an event that has little impact.

One Stop Winter Weather Page

Travel Forecasts and Conditions

Winter Weather Page pictureWinter storms have the capability to completely immobilize large areas of a state, and possibly several states simultaneously. Thus, winter weather warnings, watches, and advisories are issued for relatively large geographic areas of Kentucky and Indiana, rather than for one specific county or a small group of counties.

Different types of winter weather occur within a winter storm, and at varying intensities. Strong winds, extreme cold, accumulations of ice and heavy snow, and dangerous wind chills are typically what most affect our region.  Winter storms may be deceptive because many deaths and injuries are indirectly related to the storm. People can be hurt or killed in traffic accidents on icy roads, while shoveling snow, or from hypothermia due to prolonged exposure to cold, etc.

Interactive Snowfall Maps
 Road Reports: Kentucky: 1-866-737-3767 or 511 in-state;  Indiana: 1-800-261-7623

  Wind Chill Index   

Cold Weather During the winter months, it's not only the actual temperature that we worry about, but the wind chill temperature as well. The Wind Chill Index is based on the rate of heat loss from exposed skin caused by the combined effects of wind and cold. It is how cold the air feels to our skin.

As the wind increases, heat is carried away from the body at an accelerated rate. The following is a chart that graphically correlates the properties of air temperature and wind speed.

Wind Chill Chart

Wind Chill Calculator

Air Temperature °F Wind Speed (MPH)
  Wind Chill Index
 Wind Chill Brochure  

  Other Resources   

 Information on Winter Weather
 Be a Winter-Wise Driver
 Downed Power Lines Mean Danger
 Staying Warm in Spite of the Weather is the U.S. government's official web portal to all federal, state and local government web resources and services.