On Oct. 12, 1979, Super Typhoon Tip’s central pressure dropped to 870 mb (25.69 inches Hg), the lowest sea-level pressure ever observed on Earth, according to NOAA. Peak wind gusts reached 190 mph (306 kph) while the storm churned over the western Pacific.
Besides having unsurpassed intensity, Super Typhoon Tip is also remembered for its massive size. Tip’s diameter of circulation spanned approximately 1,380 miles (2,220 km), setting a record for the largest storm on Earth. The storm’s huge diameter was exactly the same as the distance from New York City to Dallas.
Accuweather’s Mark Mancuso has the details: Super Typhoon