Typhoon Manny, known in the Philippines as Typhoon Naning, was a long-lived and deadly tropical cyclone that struck the Philippines during the 1993 Pacific typhoon season. It was the second typhoon to hit the Visayas, in the central Philippines, that year, following Kyle. The twenty-ninth named storm and fifteenth typhoon of the season, the system formed from a near-equatorial trough that also spawned Lola during the month in the east Caroline Islands on December 3. Moving northwestwards, it strengthened to a tropical storm on the next day before intensifying further to a severe tropical storm that night. The system attained typhoon status on December 8, while making an anticyclonic loop, nearly the same as Pamela, 11 years later. It then rapidly intensified while moving to the southwest, with the typhoon reaching its peak of and an unusually high barometric pressure of 960 mbar before crossing the central Philippines on It soon moved through the South China Sea as a tropical storm before weakening to a tropical depression as it encountered high wind shear. However, it restrengthened back to a tropical storm as it moved back again to a favorable environment before passing to the south of Vietnam as the system weakened back below gale-force winds. It then dissipated on December 16 as it passed through Thailand.
On Yap, Manny produced some minor damages to trees, while causing some squally rains. In the Philippines, Naning claimed at least 245 lives, and caused widespread flooding and landslides across Visayas and Mimaropa; however, the capital Manila was spared. There were no reports of damages in Vietnam and Thailand; however, the latter saw some low-lying floods. The total damages from Manny were estimated at $50 million (1993 USD).
Meteorological history
The Joint Typhoon Warning Center (JTWC) started to monitor an area of convection embedded from a near-equatorial trough, near Tofol in Kosrae State on December 1. At this time, the disturbance is in a marginally favorable environment, including warm sea surface temperatures and radial outflow, being offset by high wind shear, as being evidenced by satellite imagery. On the next day, the organization of the disturbance became well-defined, with the JTWC first mentioning the system in their Significant Tropical Weather Advisory, while located to the east of Pohnpei, Caroline Islands. However, as the disturbance entered yet again a hostile environment, the system became disorganized on satellite imagery as the convection became sheared to the east of its supposed low-level circulation center. Early on December 3, the Japan Meteorological Agency (JMA) issued their first advisory on the system, first monitoring it as a disturbance. Three hours later, at 03:00 UTC, the JTWC issued a Tropical Cyclone Formation Alert on the disturbance, despite the highly disorganized nature of the system. At 06:00 UTC of the same day, the agency upgraded the system to a tropical depression, most likely based on estimates of 25 knots and surface synoptic data from the Carolines. Nine hours later, the depression's organization became defined again as being evidenced on satellite photos.
At 18:00 UTC of the next day, the JTWC upgraded the system to a tropical storm, based on its estimates of ; however, it was deemed that the system may have intensified, six hours later. At that time, the storm started to move to the northwest, due to a high pressure situated on Indonesia. The JMA upgraded the system to a tropical storm only six hours later and had a slightly low estimate of . The former also gave the name Manny on the intensifying system. The storm began to slow down as it continued northwestward before strengthening to a severe tropical storm at 12:00 UTC of the next day. At this time, Manny entered the Philippine Area of Responsibility and was locally named Naning by the PAGASA. There, the local meteorological forecasters depicted of a possible landfall in Luzon between December 9 and 10, while Lola is devastating the country.