Three low pressure areas formed the monsoon trough that extended from the Philippines to the Marshall Islands.
An area of disturbed weather to the southwest of Guam eventually strengthened into Tropical Storm Roger on October 3.
Later on the same day, the tropical system which would later become Typhoon Tip formed to the south of Pohnpei.
Because Roger was so close, the storm that would become Tip was not able to strengthen much.
However, it gradually organized as it moved towards the west.
The tropical disturbance moved slowly and erratically and slowly made a loop to the southeast of Chuuk.
A Reconnaissance Aircraft flight into the system late on October 4 confirmed the existence of a circulation center.
A bit later, on October 5, the Joint Typhoon Warning Center (JTWC) called the system Tropical Depression Twenty-Three.

The tropical depression intensified into Tropical Storm Tip, but it did not organize significantly due to Tropical Storm Roger being so close.
After moving slowly for many days, Tip began a steady northwest path on October 8.
By that time, Tropical Storm Roger had become an extratropical cyclone.
At first, the storm was expected to continue moving northwestward and hit Guam.
However, early on October 9, it turned to the west, passing about 45 km (28 mi) south of the island.
Later that day, Tip reached typhoon strength.

As a result of certain weather conditions, Typhoon Tip quickly strengthened in the open waters of the western Pacific Ocean.
Late on October 10, the typhoon reached Category 4 strength on the Saffir-Simpson Hurricane Scale, and the next day it became a "super typhoon".
The central pressure dropped 92 mbar (hPa, 2.71 inHg) from October 9 to 11.
During this time, the typhoon became extremely large, reaching a record diameter of 2,220 km (1,380 mi).
The typhoon continued to gain strength, and early on October 12, Reconnaissance Aircraft recorded a worldwide record-low pressure of 870 mbar (hPa, 25.69 inHg).
The typhoon had winds of 305 km/h (190 mph) while located about 840 km (520 mi) west-northwest of Guam.
At the time, the typhoon's eye was only 15 km (9.3 mi) wide.

After hitting its peak strength, Tip weakened to a 230 km/h (145 mph) typhoon and stayed at that intensity for several days as it moved west-northwest.
For five days, 55 km/h (35 mph) winds extended over 1,100 km (685 mi) from the center.
On October 17, Tip began to weaken and get much smaller.
The next day, it curved towards the northeast because of a nearby trough.
After passing about 65 km (45 mi) east of Okinawa, it sped up and was then moving at 75 km/h (46 mph).
On October 19, Tip made landfall on the Japanese island of Honshū with winds of about 130 km/h (80 mph).
The typhoon continued moving rapidly northeastward through the country, and became an extratropical cyclone over northern Honshū.
What was left of the cyclone kept moving northeastward and slowly lost strength.
It was last observed near Alaska.
Three low pressure areas formed the monsoon trough that extended from the Philippines to the Marshall Islands. An area of disturbed weather to the southwest of Guam eventually strengthened into Tropical Storm Roger on October 3. Later on the same day, the tropical system which would later become Typhoon Tip formed to the south of Pohnpei. Because Roger was so close, the storm that would become Tip was not able to strengthen much. However, it gradually organized as it moved towards the west. The tropical disturbance moved slowly and erratically and slowly made a loop to the southeast of Chuuk. A Reconnaissance Aircraft flight into the system late on October 4 confirmed the existence of a circulation center. A bit later, on October 5, the Joint Typhoon Warning Center (JTWC) called the system Tropical Depression Twenty-Three.
The tropical depression intensified into Tropical Storm Tip, but it did not organize significantly due to Tropical Storm Roger being so close. After moving slowly for many days, Tip began a steady northwest path on October 8. By that time, Tropical Storm Roger had become an extratropical cyclone. At first, the storm was expected to continue moving northwestward and hit Guam. However, early on October 9, it turned to the west, passing about 45 km (28 mi) south of the island. Later that day, Tip reached typhoon strength.
As a result of certain weather conditions, Typhoon Tip quickly strengthened in the open waters of the western Pacific Ocean. Late on October 10, the typhoon reached Category 4 strength on the Saffir-Simpson Hurricane Scale, and the next day it became a "super typhoon". The central pressure dropped 92 mbar (hPa, 2.71 inHg) from October 9 to 11. During this time, the typhoon became extremely large, reaching a record diameter of 2,220 km (1,380 mi). The typhoon continued to gain strength, and early on October 12, Reconnaissance Aircraft recorded a worldwide record-low pressure of 870 mbar (hPa, 25.69 inHg). The typhoon had winds of 305 km/h (190 mph) while located about 840 km (520 mi) west-northwest of Guam. At the time, the typhoon's eye was only 15 km (9.3 mi) wide.
After hitting its peak strength, Tip weakened to a 230 km/h (145 mph) typhoon and stayed at that intensity for several days as it moved west-northwest. For five days, 55 km/h (35 mph) winds extended over 1,100 km (685 mi) from the center. On October 17, Tip began to weaken and get much smaller. The next day, it curved towards the northeast because of a nearby trough. After passing about 65 km (45 mi) east of Okinawa, it sped up and was then moving at 75 km/h (46 mph). On October 19, Tip made landfall on the Japanese island of Honshū with winds of about 130 km/h (80 mph). The typhoon continued moving rapidly northeastward through the country, and became an extratropical cyclone over northern Honshū. What was left of the cyclone kept moving northeastward and slowly lost strength. It was last observed near Alaska.
Typhoon Tip