The document summarizes three tropical cyclones that affected the Philippines in 2009: Tropical Storm Ondoy (Ketsana) caused widespread flooding in Metro Manila in late September, with over 455 mm of rain recorded in 24 hours. Typhoon Pepeng (Parma) brought heavy rains to northern Luzon in early October, lingering over the area for about a week as it made three landfalls. Typhoon Santi (Mirinae) struck southern Luzon in late October to early November with maximum sustained winds of 150 kph.

1. The three (3) destructive Tropical Cyclones of 2009 (TS ONDOY, TY PEPENG and TS SANTI)

2. Tropical Storm “ONDOY”(KETSANA)

3. ANIMATED IMAGERY BEFORE AND AFTER LANDFALL OF TS "ONDOY" TS " ONDOY " P A R LINE P A R LINE P AR L INE P AR L IN E

6. Rainfall Recorded on Sept. 25 & 26, 2009

7. Tropical Storm Ondoy (Ketsana) On 26 Sep 2009, TS Ketsana dumped record breaking rainfall over Metro Manila. The highest rainfall totals around the Philippines occur south of the storm's track (indicated by the thin black line) in an east-west band over central Luzon that includes Manila. Amounts in this region are in the order of 375 mm (~15 inches, shown in dark yellow) to over 475 mm (~19 inches, shown in orange). The highest recorded amount from the TMPA around Manila was 585.5 mm (almost 24 inches). 24-hour Rainfall @ Science Garden, Quezon City: 455 mm (18.2 inches) ~ 100- year 8AM 26 Sep – 8Am 27 Sep 2009 return period

9. What happened ONDOY has slowed down slightly before it made landfall due to the influence of the cyclonic vortex over Vietnam. C A TS “ONDOY”

10. Aftermath of TS “ONDOY” Marikina area

11. Aftermath of “ONDOY” Rosario Pasig

12. Typhoon “PEPENG”(PARMA)

13. T.S. " PEPENG" TY " QUEDAN" P A R LINE P A R LINE P AR L INE P AR L IN E

20. What happened The high pressure area over Hongkong and the approaching westerly trough controls the speed and movement of “PEPENG” plus the interaction of typhoon “QUEDAN” behind resulted to almost stationary motion over extreme northern Luzon for about a week (Oct. 03-09, 2009). TY. “QUEDAN” TY “PEPENG” H CLASSICAL FUJIWHARA EFFECT

21. Typhoon “SANTI” (MIRINAE)

22. ANIMATED IMAGERY OF TYPHOON "SANTI" BEFORE AND AFTER LANDFALL TY."SANTI" P A R LINE P A R LINE P AR L INE P AR L IN E

26. Thank You! www.pagasa.dost.gov.ph “ tracking the sky…helping the country!”