Typhoon Archive PH

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The Philippines is the most typhoon-prone country on earth, with an average of 20 storms entering the Philippine Area of Responsibility each year. TAPH tracks over 1,400 historical storms to make that data visible, comparable, and hard to ignore.

Data from IBTrACS (NOAA) · Enrichment from PAGASA & NDRRMC

Made by harv

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Sendong

Cat 0

WASHI · 2011

WASHI was a Tropical Storm tropical cyclone that affected the Philippines in 2011.

Timeline

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Wind Speed

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Pressure

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Overall Impact

Casualties

1,268

Est. Damage

₱5.3 Billion

Affected Regions

MindanaoVisayas

Affected Provinces

Misamis OrientalLanao del NorteBukidnonLanao del SurNegros OrientalZamboanga del NorteIliganCagayan de Oro

PAGASA Signals

Misamis Oriental

TCWS #2

Lanao del Norte

TCWS #2

Bukidnon

TCWS #1

Lanao del Sur

TCWS #1

Zamboanga del Norte

TCWS #1

Notable Impacts

Night-time flash floods devastated Cagayan de Oro and Iligan City
Rivers rose from 2 meters to 10 meters in under 3 hours
Most of the casualties occurred while people were sleeping
Over 51,000 houses damaged or destroyed
Nearly 1.1 million people affected across 16 provinces
Category: only Tropical Storm (Cat 0) despite devastating human toll
Exposed vulnerability of informal settlements along riverbanks
Led to strict no-build zone enforcement along waterways in CDO and Iligan

Data Sources

NDRRMC SitRep No. 23
IFRC Final Report
UNDP: Post-Disaster Needs Assessment
Wikipedia: Tropical Storm Washi

Data last updated May 19, 2026