New criteria for Heat Advisories and Excessive Heat Warnings

The National Weather Service office in Paducah will be using the following criteria for the issuance of Heat Advisories and Excessive Heat Warnings:
  • Heat Advisory:

Maximum daytime heat index of at least 105 degrees AND / OR maximum actual air temperature of at least 100 degrees

  • Excessive Heat Warning:

Maximum daytime heat index of at least 110 degrees and minimum night-time low temperature of 75 degrees or higher for at least a 48-hour period

If Heat Advisory criteria are met for four consecutive days or more, the advisory may be upgraded to an Excessive Heat Warning  


Note: Sub-advisory heat indices of 100 to 105 degrees are highlighted in the Hazardous Weather Outlook and headlined in the Zone Forecast Product.




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