Brunei Darussalam Meteorological Department
Mamma or Mammatus clouds were observed in the Sultanate on Tuesday at around 6.30pm, a Brunei Darussalam Meteorological Department (BDMD) release stated yesterday.
The Mammatus cloud is one of the most distinctive cloud formations with a series of bulges or pouches emerging from the base of a cloud. The shape of Mammatus formations can vary widely; from the classic protruding shape, to a more elongated tube hanging from the cloud above.
Often the case in Brunei, Mammatus forms in association with Cumulonimbus clouds.
Its occurrence is not uncommon in Brunei Darussalam since convective thunderstorm clouds such as Cumulonimbus easily form on very hot afternoons. Thus, a Mammatus on a clear day is an indication of thunderstorms occurring nearby.
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