Widebody Transport
Dispatch Dispatcher
Inflight Event / Encounter Fuel Issue; Inflight Event / Encounter Weather / Turbulence
Flight Crew Diverted
Environment - Non Weather Related
While enroute [to] MMTO approximately 15-20 min before top of descent; received following SIGMET for volcanic ash from Volcano. SIGMET area depicted on Flight Explorer was within 20 NM of MMTO airport. It was still dark down in MMTO; so no way to visually assess actual presence of ash. Flight not tankered due to payload; so out of abundance of caution; coordinated with crew and service recovery to divert flight to filed alternate of MMGL. Shortly after making the turn to MMGL; MMGL forecast amended to ¼ SM for our time of arrival so subsequently amended to add further alternate of MMMY. At time of [reporting]; MMGL weather holding and Aircraft X in descent for landing at MMGL. Shift note written and duty officer as well as manager on duty notified.
Air Carrier Dispatcher reported assisting a flight in avoiding an area of volcanic ash. Flight diverted to an alternate airport.