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| ADDS - AIRMETs Help Page
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Back to AIRMETs Page or AIRMETs help page 3
|An AIRMET (AIRman's METeorological
Information) advises of weather potentially hazardous to all aircraft
but that does not meet SIGMET criteria.
AIRMETs are issued by the National Weather Service's Aviation Weather Center (for the lower 48 states and adjacent coastal waters) for the following weather-impacted reasons:
AIRMETs are routinely issued for 6 hour periods beginning at 0245 UTC. AIRMETS are also amended as necessary due to changing weather conditions or issuance/cancellation of a SIGMET.