The Meteorology, Climatology, and Geophysics Agency (BMKG) has issued a crucial alert for residents across Banten province, urging them to brace for potential extreme weather conditions. This period of heightened vigilance is slated from May 3 to May 8, 2026, characterized by intense rainfall, accompanied by lightning and powerful winds.
Hartanto, the Head of BMKG Region II, emphasized that this impending extreme weather is a direct consequence of several active atmospheric phenomena anticipated to trigger moderate to very heavy rainfall across various parts of Banten. These conditions are expected to bring not only significant downpours but also disruptive lightning strikes and strong gusts of wind.
Specifically, for May 3 to May 5, 2026, BMKG forecasts a high likelihood of heavy to very heavy rainfall in particular areas. This includes the southern parts of Pandeglang Regency, the central and southern regions of Lebak Regency, southern Tangerang Regency, and South Tangerang City. Concurrently, moderate to heavy rainfall is expected across the western and southern areas of Serang Regency, Serang City, the broader Pandeglang Regency, Lebak Regency, central and northern Tangerang Regency, and Tangerang City.
As the period progresses, from May 6 to May 8, 2026, residents should remain wary of moderate to heavy rainfall. These conditions are projected to affect northern Pandeglang Regency, Lebak Regency, and southern Tangerang Regency. The changing weather patterns necessitate continued awareness and preparedness from the community.
In addition to terrestrial weather warnings, BMKG has also highlighted the potential for moderate high waves, ranging between 1.25 to 2.5 meters. These elevated wave conditions are particularly expected in the western Sunda Strait, offshore from Pandeglang, as well as in the southern waters of both Pandeglang and Lebak. Mariners and coastal communities in these areas are advised to exercise extreme caution.
BMKG strongly advises the public to remain calm yet highly vigilant, especially those residing in areas historically prone to hydrometeorological disasters. These include regions susceptible to floods, landslides, flash floods, and the risk of fallen trees. Taking proactive steps is crucial for ensuring daily activities remain safe and uninterrupted. This includes verifying that water drainage systems are clear, avoiding travel to flood-prone zones, and securing essential belongings.
“The public is also urged to continuously monitor official information from BMKG and to be critical of unverified or dubious sources,” Hartanto reiterated, underscoring the importance of relying on credible meteorological updates to navigate the upcoming weather challenges effectively.
Summary
The Meteorology, Climatology, and Geophysics Agency (BMKG) has issued an extreme weather alert for Banten province from May 3 to May 8, 2026. Residents are warned to prepare for intense rainfall, lightning, and powerful winds across regions including Pandeglang, Lebak, Serang, and Tangerang. These conditions are driven by active atmospheric phenomena expected to trigger moderate to very heavy downpours during this period.
In addition to inland weather, BMKG warns of potential sea waves reaching heights of up to 2.5 meters in the western Sunda Strait and southern Banten waters. The public is urged to remain vigilant against hydrometeorological disasters such as floods, landslides, and fallen trees. Safety recommendations include maintaining drainage systems and monitoring official BMKG channels for the latest meteorological updates.