Tropical Storm Kelly (1981)

Tropical Storm Kelly, known in the Philippines as Tropical Storm Daling, was a weak but destructive tropical storm that struck the Philippines in June 1981. A tropical disturbance organized into a tropical depression east of the Philippines on June 28. It tracked westward, reaching tropical storm on June 30 before hitting the central Philippines. Kelly weakened over the islands, but re-strengthened over the South China Sea, nearly attaining typhoon status on July 2. The system passed through the southern Hainan Island on July 3. The cyclone then crossed the Gulf of Tonkin as a weakening tropical storm, and made landfall in northern Vietnam on July 4 as a tropical storm. Kelly dissipated two days later inland.

Tropical Storm Kelly was the worst storm to affect the Philippines in eight months. Nine towns in an area near the Mayon Volcano sustained flooding. Over of railways lines were washed out. At least 800 homes were destroyed while of rice fields were ruined. More than 3,600 individuals were displaced. Overall, damage totaled to $7.8 million (1981 USD).

Meteorological history

The origins of Tropical Storm Kelly can be traced back to an area of disturbed weather that was first detected by weather satellite imagery on June 25. Although the system was well-organized at this time, there was little evidence of a low-level circulation. Despite this, the Japan Meteorological Agency (JMA) started watching the system. Meanwhile, Dvorak classifications were placed at T2.5, equivalent to . Based on this, a Tropical Cyclone Formation Alert (TCFA) was issued that evening as the system moved west. However, on June 26, the TCFA was cancelled. Midday on June 28, following an increase in convection, the TCFA was re-issued. On that day, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) also monitored the storm and assigned it with the local name ''Daling''. After further development and a subsequent TCFA, the Joint Typhoon Warning Center (JTWC) classified the system as a tropical depression on June 30.

At 0600 UTC on June 30, the JTWC upgraded the depression into Tropical Storm Kelly. Twelve hours later, the JMA followed suit. At this time, Tropical storm Kelly moved ashore along the central Philippines. Due to land interaction, the tropical cyclone became less organized. Six hours after landfall, the JTWC downgraded Kelly into a depression, even though the JMA maintained Kelly as a tropical storm thorough its passage through the country. After emerging into the South China Sea, Kelly resumed deepening. At 0600 UTC on July 1, the JTWC re-upgraded Kelly into a tropical storm. After turning northwest, After exiting PASGA's warning zone, Kelly continued to strengthen, and midday on July 2, the JMA estimated that the storm reached its peak intensity of . Several hours later, the JTWC upgraded Kelly to a typhoon. At 0300 UTC on July 3, surface observations from the Paracel Islands indicated winds of and a pressure of . Based on this, the JTWC reported that Kelly reached its peak wind speed of . Meanwhile, the JMA noted that Kelly attained its peak barometric pressure of . Thereafter, the storm's eye became less defined and the surrounding convection weakened. On the evening of July 3, the eye collapsed as Kelly skirted southern Hai-nan. Due to land interaction, Kelly continued to weaken and early on July 4, the JTWC downgraded the typhoon into a tropical storm. Later that morning, the eye briefly re-developed over the Gulf of Tonkin; however, no re-intensification occurred as Kelly remained poorly organized. Late on July 4, Kelly made landfall as a tropical storm south of Hanoi in Vietnam. On July 5, the JTWC stopped monitoring the system as it had moved inland. The JMA followed suit the next day.

Impact and aftermath

Tropical Storm Kelly was the worst storm to affect the Philippines in eight months. Mudslides were reported along the slopes of the Mayon volcano, as a result, many nearby villages were destroyed. Some people were buried under rocks and debris due to mudslides. Nine towns in an area were flooded. Huts and rice feels were inundated by mud in debris in parts of Legaspi, Daragan, Ligao, and Camalig. The towns of Ligao, Oas, Camalig and Guinobatan were the worst affected by Kelly. Although winds were not very strong, many rivers overflowed their banks. In the Albay Province