On the morning of January 12, a low pressure area outside the Philippine Forecast Area (PAR) was completely formed, about 1,350km southeast of Davao and was named Invest 91W by the US Joint Typhoon Warning Center (JTWC).
On January 13, this low pressure area may enter PAR and does not rule out the possibility of strengthening into a tropical depression or storm, threatening the Eastern Visayas and Bicol regions.
Previously, on January 10, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said that a low pressure area could form inside PAR in the middle of this week and could develop into a tropical depression.
The low pressure area may affect the Caraga and Davao regions, then approach the area between Eastern Visayas and the Caraga region" - weather forecaster Benison Estareja of PAGASA said.
Expert Estareja noted that this low pressure area is likely to "moderately" become a storm and will then be named as Typhoon Ada - the first storm in 2026 in the Philippines.
PAGASA forecasts there will be 2 to 8 tropical storms entering PAR in the first half of 2026.
PAGASA has announced the names of tropical storms expected to enter PAR in 2026, including: Ada, Basyang, Caloy, Domeng, Ester, Francisco, Gardo, Henry, Inday, Josie, Kiyapo, Luis, Maymay, Neneng, Obet, Pilandok, Queenie, Rosal, Samuel, Tomas, Umberto, Venus, Waldo, Yayang and Zeny.
Each common typhoon name will use the corresponding sub-name set when the number of tropical cyclones in the season exceeds 25.