Tropical Storm Washi
| Severe Tropical Storm Washi approaching Mindanao on December 16 | |
| Meteorological history | |
|---|---|
| Formed | December 13, 2011 | 
| Dissipated | December 19, 2011 | 
| Severe tropical storm | |
| 10-minute sustained (JMA) | |
| Highest winds | 95 km/h (60 mph) | 
| Lowest pressure | 992 hPa (mbar); 29.29 inHg | 
| Tropical storm | |
| 1-minute sustained (SSHWS/JTWC) | |
| Highest winds | 95 km/h (60 mph) | 
| Lowest pressure | 985 hPa (mbar); 29.09 inHg | 
| Overall effects | |
| Fatalities | 1,292–2,546 | 
| Injuries | 6,071 | 
| Missing | 1,049 | 
| Damage | $97.8 million (2011 USD) | 
| Areas affected | Caroline Islands, Philippines | 
| IBTrACS | |
| Part of the 2011 Pacific typhoon season | |
Severe Tropical Storm Washi, known in the Philippines as Severe Tropical Storm Sendong, was a late-season tropical cyclone that caused around 1,200 to 2,500 deaths and catastrophic damage in the Philippines in late 2011. Washi made landfall over Mindanao, a major region in the Philippines, on December 16. Washi weakened slightly after passing Mindanao, but regained strength in the Sulu Sea, and made landfall again over Palawan on December 17.