A CAVUM, also known as Fallstreak Hole or Skypunch, was observed over Brunei around 10am yesterday.
This is one of the many interesting meteorological phenomena rarely observed in the Sultanate, the Brunei Darussalam Meteorological Department (BDMD) said.
Cavum is a well-defined generally circular (but can also be linear at times) hole in a thin layer of supercooled water droplet cloud. Wisps of cirrus typically fall from the central part of the hole, which generally grows larger with time. It is typically a circular feature when viewed from directly beneath, but may appear oval-shaped when viewed from a distance.
The phenomenon observed yesterday occurred in altocumulus clouds, hence posed no danger to the public.
The department said it will continue to monitor the weather conditions and advised the public to keep updated with the latest weather information by visiting its website at www.met.gov.bn or following its Facebook (bruneiweather), Instagram (bruneiweather) and Brunei WX mobile application.