With sustained winds at 195 mph and gusting to 235 mph, Super Typhoon Haiyan is one of the strongest tropical cyclone in world history.
After flattening Philppines, the storm is currently over South China Sea moving towards Vietnam.
A quick look at Flightradar24 (with cloud layer active) gives a hint at how the Haiyan is affecting air traffic in the air, with aircraft forced to circumvent the bad weather.
Obviously, only aircraft using ADS-B can be seen on the virtual radar.
Top image: screenshot from Flightradar24.com