The sixth internationally named storm of the season, Rumbia formed from a broad area of low pressure situated in the southern Philippine Sea on June 27.

On June 28, the disturbance strengthened to tropical storm strength, and subsequently made its first landfall on Eastern Samar in the Philippines early the following day.

Over open waters, Rumbia resumed strengthening, and reached its peak intensity with winds of 95 km/h (50 mph) on July 1,[nb 1] ranking it as a severe tropical storm.

Due to land interaction, Rumbia quickly weakened into a low pressure area on July 2 and eventually dissipated soon afterwards.

[1] Moving northwestward under the influence of a subtropical ridge, the system organized in favorable conditions of low wind shear the following day.

[nb 2][3] Three hours later, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) upgraded the system to tropical depression status, designating it with the local name Gorio; however, the agency estimated weaker winds in the storm.

[5] At 0300 UTC that day, the Joint Typhoon Warning Center (JTWC) also upgraded the system to tropical depression 06W.

[11][15] Once in the South China Sea on June 30, Rumbia steadily organized, with the storm's banding features becoming more well defined around the center.

[17] At 2100 UTC that day, the tropical storm moved out of the PAGASA's area of responsibility, and thus the agency's last warning on the system was issued at that time.

The Department of Social Welfare and Development in Eastern Visayas activated rapid response teams and prepared 1,040 family food packs for potential delivery in disaster areas.

[24] Local disaster management units in Caraga were activated, with 2,000 family food packs readied and a standby fund totaling ₱300,440.

Over the next fourteen hours, Rumbia edged closer to Hong Kong, entering within 400 km of the region at 12:00 HKT (local time) on July 1.

[25] Due to the heavy rainfall from Rumbia in Tacloban, local officials were forced to cancel the scheduled Day of Festivals Parade.

Two major roadways in Eastern Visayas were blocked by soil erosion and flooding left behind by the heavy rainfall.

[27] In Northern and Eastern Samar, downed wires resulted in temporary and isolated power outages across the two provinces.