New Heat Advisory and Warning Criteria

NEW HEAT ADVISORY AND EXCESSIVE HEAT WARNING CRITERIA HAVE BEEN
IMPLEMENTED BY THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
JACKSON KENTUCKY. THE SAME CRITERIA WILL ALSO BE USED BY THE NATIONAL
WEATHER SERVICE FORECAST OFFICES IN LOUISVILLE AND PADUCAH. THE
CRITERIA HAVE BEEN CHANGED TO BETTER REFLECT THE EFFECTS OF HEAT AND
HUMIDITY...AND TO PROVIDE A MORE UNIFORM HEAT ADVISORY AND WARNING
SERVICE ACROSS THE REGION.

A HEAT ADVISORY WILL BE ISSUED WHEN EITHER THE HEAT INDEX IS
FORECAST TO REACH 100 DEGREES OR THE ACTUAL TEMPERATURE IS FORECAST
TO REACH 95 DEGREES. AN EXCESSIVE HEAT WARNING WILL BE ISSUED WHEN
THERE IS A 48 HOUR PERIOD DURING WHICH THE MAXIMUM HEAT INDEX REACHES
105 DEGREES AND THE MINIMUM HEAT INDEX DOES NOT FALL BELOW 75
DEGREES. AN EXCESSIVE HEAT WARNING MAY ALSO BE ISSUED IF THERE WILL
BE 4 CONSECUTIVE DAYS OF EITHER 95 DEGREE TEMPERATURES OR 100 DEGREE
HEAT INDICIES.

ANY QUESTIONS CONCERNING THE NEW CRITERIA CAN BE DIRECTED TO NATIONAL
WEATHER SERVICE JACKSON KENTUCKY METEOROLOGIST IN CHARGE SHAWN HARLEY
AT 606-666-2560...EXTENSION 642.


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