google-site-verification: googlee9447d3b266da5de.html Onset of the SW Monsoon and the Effect on Pirate Activity

Onset of the SW Monsoon and the Effect on Pirate Activity


The Southwest Monsoon sets up in late Spring and lasts from June through to September and is created when southwesterly winds from the Indian Ocean cross onto land.

'This week the onset of the Southwest Monsoon begins to dominate the weather pattern over the Somali Basin and the Arabian Sea.

A series of lows and their associated troughs are scattered across the region and producing isolated areas of instability across the region with isolated rain showers and thunderstorms.' (ONI)

Traditionally this will see an small boat activity confined to the more sheltered waters in the IRTC, and away from open sea due to high sea states and high winds.

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It is difficult for a small boat to maintain a chase speed into sea's with wave heights over approx 1.2m and will need to come from ahead or abeam to catch a medium speed vessel, coming alongside to board is made more difficult in sea's over 1.5 - 2m, and vessels can use the advantage of the larger sea states and wind speeds to provide more difficult boarding situations by turning into seas.

The below Navtex report from Met area 9 demonstrates the current situation in the region;

....................................................................................................................................................

MARINE METEOROLOGICAL BULLETIN FOR MET AREA IX VALID FOR 24 HOURS COMMENCING FROM 0700 UTC DATED 29-05-2016 BY PAKISTAN METEOROLOGICAL DEPARTMENT PART -I: NIL. PART II: NIL. PART -III: FORECASTS:

SUB AREA NO.1 NORTH ARABIAN SEA WIND SW LY 17-22KT GUSTING 30KT NORTH OF 24N. SW LY 12-18KT GUSTING 24KT SOUTH OF 24N WEATHER FAIR/PARTLY CLOUDY WITH HAZY MORNING. VISIBILITY MODERATE MAY BE POOR IN HAZE. STATE OF SEA SLIGHT/MODERATE OCCASIONALLY ROUGH TO VERY ROUGH IN NORTHEASTERN SECTOR.

SUB AREA NO. 2 GULF OF OMAN WIND SW LY BECMG SE/E LY 07-12 GUSTING 18KT NORTH OF 24N. S/SW LY 12-18KT GUSTING 24KT SOUTH OF 24N WEATHER FAIR/PARTLY CLOUDY WITH HAZY MORNING. VISIBILITY MODERATE MAY BE POOR IN HAZE. STATE OF SEA SLIGHT/MODERATE OCCASIONALLY ROUGH IN SOUTHERN SECTOR .

SUB AREA NO. 3 CENTRAL NORTH ARABIAN SEA (12ON/55OE, 12ON/63OE, 20ON/58OE, 20ON/67OE) WIND SW LY 10-15KT GUSTING 20KT NORTH OF 18N AND EAST OF 65E. SW/S LY 12-18KT GUSTING 24KT NORTH OF 18N AND WEST OF 65E. SW LY 10-15KT GUSTING 27KT SOUTH OF 18N AND EAST OF 63E. SW LY 17-21KT GUSTING 30KT SOUTH OF 18N AND WEST OF 63E. WEATHER PARTLY CLOUDY/CLOUDY WITH CHANCES OF THUNDERSHOWER/RAIN. VISIBILITY MODERATE MAY BE POOR IN RAIN. STATE OF SEA SLIGHT/MODERATE OCCASIONALLY ROUGH TO VERY ROUGH IN SOUTHWESTERN SECTOR.

SUB AREA NO. 4 GULF OF ADEN WIND SW/NW LY10-15KT GUSTING 24KT WEST OF 50E. S/SW LY 17-21KT GUSTING 30KT EAST OF 50E WEATHER FAIR/PARTLY CLOUDY WITH HAZY MORNING. VISIBILITY MODERATE MAY BE POOR IN HAZE. STATE OF SEA SLIGHT/MODERATE OCCASIONALLY ROUGH TO VERY ROUGH IN EASTERN SECTOR.

Navtex data recived via JCOMM official web site

IR Globe via UK Met Office


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