SAMARINDA - East Kalimantan (Kaltim) has the potential for rain in the first 10 days of early 2026 (January 1-10), so all parties are urged to be alert to the impact. This is a statement from the Meteorology, Climatology, and Geophysics Agency (BMKG) of the APT Pranoto Samarinda Meteorological Station.
"We invite residents of East Kalimantan to be aware of the potential for hydrometeorological disasters, as forecasts still have the potential for rain on Dasarian I in January," said Head of the Class III Meteorological Station Aji Pangeran Tumenggung (APT) Pranoto BMKG Samarinda Riza Arian Noor in Samarinda, quoted from ANTARA, Thursday, January 1.
The hydrometeorological disaster can be in the form of floods, overflowing rivers, slippery roads, landslides, and possibly falling trees, because rain has the potential to be accompanied by strong winds and lightning, so that this early warning is conveyed so that all residents and related parties are alert.
Based on the forecast of the potential rainfall of Dasarian I January 2026, he said, in general, the East Kalimantan region is predicted to experience moderate intensity rainfall.
"The forecast for rainfall opportunities in Dasarian I January shows that in general the Kaltim region experiences rainfall with a medium category of 50 - 150 millimeters (mm) with a rainfall chance of more than 70 percent," he said.
Meanwhile, the southern Kalimantan region, especially the southern part of West Kutai Regency, Paser Regency, and North Penajam Paser Regency, he continued, is estimated to experience low rainfall between 0-50 mm with a chance of rain ranging from 40 to 60 percent.
Then, based on the deterministic rainfall forecast in Dasarian I January 2026, he said, showed that most of the East Kalimantan region is predicted to experience rainfall with a medium category of 50 - 150 mm.
Meanwhile, based on the deterministic forecast of the nature of the rain, he continued, on Dasarian 1 January this year, it is predicted that the East Kalimantan region will experience varying rain patterns, but generally with a normal category of between 85 - 115 percent and below normal between 50 - 84 percent.
"However, in Berau Regency, West East Kutai Regency, and South Samarinda City, it is estimated that they will experience normal upper rain category between 116 - 150 percent," said Riza.
In addition, his party also monitored the Day Without Rain (HTH) on December 3, 2025. Although in general the East Kalimantan region experienced rain, there were also areas that had not experienced rain in several days.
A number of areas in East Kalimantan experienced HTH with a very short category of 1 - 5 days. The longest HTH occurred in Barong Tongkok District (West Kutai) and Muara Jawa District (Kutai Kartanegara) with a total of four days of HTH.
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