Bob Blog 26 April

WEATHERGRAM

YOTREPS

Compiled Sun 26 April 2020

Bob McDavitt’s ideas for sailing around the South Pacific.

Disclaimer: Weather is a mix of pattern and chaos; these ideas are from the patterned world.

 

Noonsite offers a website with latest info on which ports are open/closed due to Covid 19 see

www.noonsite.com/news/novel-coronavirus-2019-ncov-special-procedures-being-introduced-in-ports-of-entry-worldwide/

….scroll down and look for South Pacific region

America Samoa has a 14-day quarantine and all other port in South Pacific remain closed.

MAY be able to enter Tahiti with prearranged authorization, however this is now discouraged.

See www.noonsite.com/news/french-polynesia-if-you-have-an-alternative-dont-come/

SEAMERCY is planning (and has permission) to arrange yachts to help deliver supplies to relieve Vanuatu/Fiji/Tonga from damage from TC HAROLD.

SEAMERCY’s Fleet director and Coordinator Jonathan Robinson tells me that: “Disaster Response without boots on the ground or vessels in the water is proving to be quite challenging!”

SO, if you would like to help….

See www.noonsite.com/news/vanuatu-sea-mercy-lands-first-container-of-disaster-relief-supplies-post-cyclone-harold-amidst-covid-travel-restrictions/

 

While on the Internet check out www.youtube.com/watch?v=XYtPVso2w0c

This is from earth.nullschool.net, and shows an animation of water vapor in the atmosphere. Water vapor turns into cloud when its temperature reaches its dew point.

The animation shows that the tropics are the source of most of the water vapor in the atmosphere, and goes mainly from east to west,

that there is a drop off in the subtropics,

and that the mid-latitudes have west-going troughs each laden with moisture ( but usually less that the tropics)., separated by dry zones also travelling westwards.

Enjoy watching the change of the seasons.

 

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The Tropics

The latest cyclone activity report is at tropic.ssec.wisc.edu and Tropical Cyclone Potential is from www.ssd.noaa.gov/PS/TROP/TCFP/index.html

There are no cyclones around at present. But there is a Tropical depression in the NE Pacific Ocean, going west-northwest then west.

Extended weather models no longer show a Tropical Depression near coastal Queensland in early May (as was mentioned last week).

 

WEATHER ZONES

SPCZ=South Pacific Convergence zone.

The SPCZ is expected to stretch from Coral Sea / Solomon Islands across Northern Vanuatu /Fiji and south Tonga then fading further to the SE.

Passing trough over Tahiti area mid-week, associated with a Low near 30-35S.

Passing trough expected over Fiji/Tonga on Thu/Fri.

  

Subtropical ridge (STR)

HIGH moving into Tasman sea on Monday is expected to cross central NZ 1032hPa on Wednesday and then move off to the east along 30 to 40S. associated small squash zone near 25S between NZ and Fiji on Tue/Wed.

Next High is expected in Tasman early next week.

 

Tasman Sea /NZ/Aus

Passing trough over South Island on Monday, followed by a SW flow on Tuesday

Increasing NW winds over Tasman Sea /NZ by Friday.

Passing trough over NZ this weekend around sat 2/ Sun 3 May with strong winds.

 

From Panama:

Northerly winds to 8N this week, Light winds and ITCZ from 6N to 3N then light SW winds to 2N NW of Galapagos then gradual swing to SE trade winds.

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If you would like more detail for your voyage, then check metbob.com to see what I offer.

Or Facebook at /www.facebook.com/metbobnz/

Weathergram with graphics is at metbob.wordpress.com (subscribe/unsubscribe at bottom).

Weathergram archive (with translator) is at weathergram.blogspot.co.nz.

Contact is bob@metbob.com or txt 6427 7762212

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