Typhoon Joan (1997)

Typhoon Joan
Typhoon Joan at peak intensity on October 17
Meteorological history
FormedOctober 13, 1997
ExtratropicalOctober 24, 1997
DissipatedOctober 26, 1997
Violent typhoon
10-minute sustained (JMA)
Highest winds195 km/h (120 mph)
Lowest pressure905 hPa (mbar); 26.72 inHg
Category 5-equivalent super typhoon
1-minute sustained (SSHWS/JTWC)
Highest winds295 km/h (185 mph)
Lowest pressure872 hPa (mbar); 25.75 inHg
Overall effects
Fatalities1 confirmed, 2 missing
Damage$200,000
Areas affectedMarshall Islands, Guam
IBTrACSEdit this at Wikidata

Part of the 1997 Pacific typhoon season

Typhoon Joan was the longest-lasting super typhoon at the time, maintaining 1-minute maximum sustained winds of at least 240 km/h (150 mph) for 4.5 days.[nb 1] Joan, concurrently with Typhoon Ivan to its west, also became the strongest typhoons at the same time in the northwest Pacific Ocean. The 25th named storm during the hyperactive 1997 Pacific typhoon season, Joan developed from the same trough as Typhoon Ivan on October 11. It moved northwestward and later to the west, undergoing explosive deepening to its peak intensity on October 15. One typhoon warning agency estimated that Joan was among the strongest storms on record in the basin, and that Ivan and Joan marked the first occurrence of simultaneous super typhoons. While near peak intensity, Joan passed between Anatahan and Saipan in the Northern Marianas Islands. Later, the typhoon weakened and turned to the north and east, becoming extratropical on October 24.

On Saipan, Typhoon Joan destroyed 37 houses and caused an island-wide power outage. Three people were injured due to boarding up their house during the storm. On nearby Anatahan, high winds caused $200,000 (1997 USD) worth of crop and property damage. Later, high waves affected southern Japan and northwestern Hawaii. On Chichi-jima, Joan caused a boat to capsize, killing one of its occupants and leaving two others missing.

  1. ^ Annual Report on Activities of the RSMC Tokyo: Typhoon Center 2003 (PDF) (Report). Japan Meteorological Agency. 8. Retrieved 2013-10-15.
  2. ^ Cite error: The named reference atcr was invoked but never defined (see the help page).
  3. ^ Chris Landsea. "Subject: D4) What does "maximum sustained wind" mean ? How does it relate to gusts in tropical cyclones ?". Frequently Asked Questions (Report). Hurricane Research Division. Retrieved 2013-10-24.


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