The advisory, which was issued on Friday, noted that conditions could pose risks to aircraft at all altitudes, including during overflights, as well as arrivals and departures, and applies to all U.S. air carriers and civil operators.
FAA - Flight Advisory - https://www.faa.gov/air_traffic/publications/us_restrictions/KICZ-ADVISORY-NOTAM-A0012-26-MHTG.pdf
FAA - Flight Advisories - Central America - https://www.faa.gov/air_traffic/publications/us_restrictions#central-america
