The 1965 North Indian Ocean cyclone season had no bounds, but cyclones tend to form between April and December, with peaks in May and November. The season has no official bounds but cyclones tend to form between April and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean. There are two main seas in the North Indian Ocean—the Bay of Bengal to the east of the Indian subcontinent and the Arabian Sea to the west of India. The official Regional Specialized Meteorological Centre in this basin is the India Meteorological Department (IMD), while the Joint Typhoon Warning Center releases unofficial advisories. An average of four to six storms form in the North Indian Ocean every season with peaks in May and November.[1] Cyclones occurring between the meridians 45°E and 100°E are included in the season by the IMD.[2]
Season summary
Systems
Cyclone One (01B)
Category 1 tropical cyclone (SSHWS)
Duration
May 9 – May 12
Peak intensity
120 km/h (75 mph) (1-min);
Two cyclones that hit on May 11 and June 1 killed a total of 47,000 people.
Cyclone Two (02B)
Category 1 tropical cyclone (SSHWS)
Duration
May 26 – June 1
Peak intensity
120 km/h (75 mph) (1-min);
Two cyclones that hit on May 11 and June 1 killed a total of 47,000 people.
Depression Three (03B)
Tropical depression (SSHWS)
Duration
July 12 – July 15
Peak intensity
45 km/h (30 mph) (1-min);
Depression Four (04B)
Tropical depression (SSHWS)
Duration
July 25 – July 28
Peak intensity
45 km/h (30 mph) (1-min);
Depression Five
Depression (IMD)
Duration
July 31 – July 31
Peak intensity
Winds not specified;
Tropical Storm Six (06B)
Tropical storm (SSHWS)
Duration
August 23 – August 25
Peak intensity
65 km/h (40 mph) (1-min);
Depression Seven (07B)
Tropical depression (SSHWS)
Duration
August 30 – September 4
Peak intensity
45 km/h (30 mph) (1-min);
Depression Eight (08B)
Tropical depression (SSHWS)
Duration
September 18 – September 24
Peak intensity
45 km/h (30 mph) (1-min);
Depression Nine (09B)
Tropical depression (SSHWS)
Duration
October 6 – October 8
Peak intensity
45 km/h (30 mph) (1-min);
Depression Ten (10B)
Tropical depression (SSHWS)
Duration
October 20 – October 25
Peak intensity
45 km/h (30 mph) (1-min);
Tropical Storm Eleven (11B)
Tropical storm (SSHWS)
Duration
November 5 – November 9
Peak intensity
65 km/h (40 mph) (1-min);
Tropical Storm Twelve (12A)
Tropical storm (SSHWS)
Duration
December 5 – December 12
Peak intensity
65 km/h (40 mph) (1-min);
In December 1965, a cyclone hit Karachi, killing an estimated 10,000 people, making it Pakistan's deadliest tropical cyclone since 1950.[3]
Cyclone Thirteen (13B)
Category 1 tropical cyclone (SSHWS)
Duration
December 5 – December 15
Peak intensity
120 km/h (75 mph) (1-min);
A cyclone hit East Pakistan on December 15, causing about 10,000 casualties.[4]
