Excessive Heat Watch

Excessive Heat Watch- Issued when excessive heat is possible. Heat indexes are forecast at 115 F or higher for a period of three hours or more.

Excessive Heat Watch
Issued by the National Weather Service when heat indices in excess of 105?Ǭ?F (41?Ǭ?C) during the day combined with nighttime low temperatures of 80?Ǭ?F (27?Ǭ?C) or higher are forecast to occur for two consecutive days.

Excessive Heat Watch - Issued for the potential of the following conditions within 12 to 36 hours: heat index of at least 105 degrees Fahrenheit for more than 3 hours per day for 2 consecutive days or heat index more than 115 degrees Fahrenheit ...

Excessive Heat Watch - It's issued when the following conditions occur within 12-36 hours: a heat index of at least 105 degrees for more than 3 hours per day for 2 consecutive days or a heat index more than 115 degrees for any period of time.

NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: 88D, County Warning Area, Excessive Heat Watch, NCEP, River Flood Statement, Service Hydrologist, SKYWARN, Watch Redefining Statement, Weather Forecast Office, ...

See also: Wind, Severe thunderstorm watch, Likely, Unstable, Rain