Marine advisory in effect

By Marc Membrere 17 October 2021, 8:01PM

The Samoa Meteorology Division has issued a Marine Advisory for all of Samoa.

According to a Severe Weather Information issued by the Samoa Meteorology Division on Sunday evening, an intense high-pressure system centred south from Samoa remains to direct moderate Southeast wind over the islands.

“These winds also increase waves height to 2-2.5 metres or more. The latest observations show an area of Southeasterly winds of 35-45 kph affecting Samoa marine waters. The wind is expected to continue to impact all marine waters of the islands for tonight and tomorrow as the high-pressure system to the south strengthens. These conditions warrant the issuance of the Marine Advisory and will be valid through at least Wednesday,” the statement reads.

According to a Samoa Meteorology Division’s Forecast Discussion, from Sunday to Wednesday, clear skies were seen over Samoa with patches of low level clouds to the east streaming westward towards the area along the easterly wind flow.

“The absence of the upper level trough and stable atmospheric profile consolidate minimum showers for the area,” the Forecast Discussion reads.

But the forecast shows the arrival of moderate to fresh east winds over the north and eastern waters of Samoa.

“Global models suggest brisk trades to kick in tonight with some tradewind showers to persist tonight through at least Wednesday. However, the 37 [kilometres per hour] winds surge observed to the north and east via ASCAT pass last night is the pure confirmation to validate the Marine Advisory for all waters of Samoa,” the Forecast Discussion reads.

For Thursday through Saturday, the short wave trough is predicted to develop to the North alongside with the convergence zone over the area will materialize with increased rainfall activities by Thursday into Friday.

“An intense high pressure system will appear to the south of the region and strengthen, allow the convergence zone to shift northward. Moderate to fresh tradewind will dominate the latter part of the outlook with some tradewind showers.”


By Marc Membrere 17 October 2021, 8:01PM
Samoa Observer

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