Typhoon Vanessa (1984)
Super Typhoon Vanessa, known in the Philippines as Typhoon Toyang was a Super typhoon that formed in October 1984. Vanessa was the strongest storm of 1984 Pacific typhoon season.
Typhoon (JMA scale) | |
---|---|
Category 5 super typhoon (SSHWS) | |
Vanessa (28 Oct) | |
Formed | October 22, 1984 |
Dissipated | October 30, 1984 |
Highest winds | 10-minute sustained: 220 km/h (140 mph) 1-minute sustained: 305 km/h (190 mph) |
Lowest pressure | 880 hPa (mbar); 25.99 inHg |
Part of the 1984 Pacific typhoon season |
Meteorological history
Typhoon | Season | Pressure | ||
---|---|---|---|---|
hPa | inHg | |||
1 | Tip | 1979 | 870 | 25.7 |
2 | June | 1975 | 875 | 25.8 |
Nora | 1973 | |||
4 | Forrest | 1983 | 876[1] | 25.9 |
5 | Ida | 1958 | 877 | 25.9 |
6 | Kit | 1966 | 880 | 26.0 |
Rita | 1978 | |||
Vanessa | 1984 | |||
9 | Irma | 1971 | 884 | 26.1 |
10 | Nina | 1953 | 885 | 26.1 |
Joan | 1959 | |||
Megi | 2010 | |||
Source:JMA Typhoon Best Track Analysis Information for the North Western Pacific Ocean.[2] |
This system formed in the near equatorial trough southeast of Ponape a few days after Thad on October 20. The system moved northwest to just north of Ponape as it slowly developed. The disturbance strengthened into a tropical depression by October 22 and a tropical storm October 23 despite some northwesterly shear from Thad. As a minimal typhoon, Vanessa moved about 165 kilometres (103 mi) south of Guam, where winds gusted to 59 knots (109 km/h) on Nimitz Hill. Damage on the island totaled US$1.7 million (1984 dollars), mainly to the banana crop.[3] Moving west-northwest, Vanessa continued to strengthen, becoming a super typhoon. Super Typhoon Vanessa was the strongest typhoon of the season, reaching maximum sustained wind speeds of 190 miles per hour (310 km/h) over the open waters of the West Pacific. At its peak, it had a pressure of 880 mb, only 10 millibars higher than the record-setting Typhoon Tip of 1979. Its central pressure fell 100 mb in 48 hours. The intense cyclone recurved on October 27 and October 28 as a cold front approached from the northwest. Vanessa slowly merged with the frontal boundary, becoming a storm-force extratropical cyclone late on October 30.[4]
Impact
Though the storm did not directly impact the Philippines, its outer bands triggered flooding that killed 63 people.[5]
References
- "World Tropical Cyclone Records". World Meteorological Organization. Arizona State University. Retrieved December 12, 2013.
- Japan Meteorological Agency. "RSMC Best Track Data (Text)" (TXT).
- Joint Typhoon Warning Center (1985). Super Typhoon Vanessa. Retrieved on 2007-01-13. Archived June 7, 2011, at the Wayback Machine
- Joint Typhoon Warning Center (1985). Super Typhoon Vanessa. Retrieved on 2007-01-13. Archived June 7, 2011, at the Wayback Machine
- "Destructive Typhoons 1970-2003". National Disaster Coordinating Council. November 9, 2004. Archived from the original on November 9, 2004. Retrieved April 22, 2013.