Typhoon Nanmadol (2011)
Nanmadol at peak intensity approaching the Philippines on August 26 | |
| Meteorological history | |
|---|---|
| Formed | August 21, 2011 |
| Dissipated | August 31, 2011 |
| Very strong typhoon | |
| 10-minute sustained (JMA) | |
| Highest winds | 185 km/h (115 mph) |
| Lowest pressure | 925 hPa (mbar); 27.32 inHg |
| Category 5-equivalent super typhoon | |
| 1-minute sustained (SSHWS/JTWC) | |
| Highest winds | 260 km/h (160 mph) |
| Lowest pressure | 918 hPa (mbar); 27.11 inHg |
| Overall effects | |
| Fatalities | 38 confirmed |
| Damage | $1.49 billion (2011 USD) |
| Areas affected | Philippines, Taiwan, China |
| IBTrACS | |
Part of the 2011 Pacific typhoon season | |
Typhoon Nanmadol, known in the Philippines as Super Typhoon Mina, was the strongest tropical cyclone in 2011 to hit the Philippines and also the second most intense tropical cyclone worldwide in 2011, and the first of the year to directly impact Taiwan and the rest of the Republic of China (ROC). Becoming the eleventh named storm, the seventh severe tropical storm and the fourth typhoon of the 2011 Pacific typhoon season, Nanmadol made a total of three landfalls killing 26, and causing widespread damage worth US$26,464,591. The area of low pressure that was about to become Nanmadol formed on August 19. It drifted north and became a tropical depression on August 21, a tropical storm on August 23 and a typhoon on the same night. Nanmadol reached peak strength with winds of 100 knots (185 km/h; 115 mph) (10-minute sustained) and 140 knots (260 km/h; 160 mph) (1-minute sustained) threatening the Philippines with heavy rain and flash flooding.
The Filipinos were warned about high waves, strong winds and very heavy rains over the weekend with storm signal 4 raised in parts of the Nation. There, strong winds toppled trees, power and communication lines triggering power outages in the provinces of Cagayan and Isabela. Rivers swelled up on receiving tons on rainwater, overflowing at least six bridges across the two provinces. The typhoon hardly moved in 24 hours bringing relentless rains to the archipelago causing the retaining wall of Baguio's dump facility to collapse. Also, major power lines in the nation were pulled down causing total power failures in Benguet, Cagayan, Apayao, Kalinga and mountain provinces.
The 2011 Typhoon Nanmadol is not to be confused with other typhoons of the same name that also happened in the northwestern Pacific Ocean in 2004, 2017, and 2022. The name Nanmadol was contributed by Micronesia and refers to the Nan Madol archaeological site on Pohnpei.