bob blob 2 oct 2022

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.
Compiled Sunday 2 October 2022

REVIEW OF THE LAST MONTH (September 2022)

Sea Surface temperature anomalies from psl.noaa.gov/map/clim/sst.shtml
The main pattern remains the same as in July with the cool waters of La Nina
along the Eastern Equatorial Pacific surrounded by zones of warmer than
normal conditions in the north and south Pacific.

Average isobars for past month
From www.psl.noaa.gov/map/images/fnl/slp_30b.fnl.html
This pattern is much the same as at the end of August.

Pressure anomolies for past month (below)
The main change in the past month has been the appearance of lower than
normal pressures over and around North America.

Zooming into the NZ area
The subtropical ridge is slightly weaker east of Aotearoa NZ otherwise the
pattern is very similar. .

.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
Cyclone IAN made historically damaging landfall over Florida last week with
a death toll over 20 and still rising.
Here is a clip showing four vessels drifting down along a street at Fort
Myers on the SW tip of Florida twitter.com/i/status/1575213169001127936
Tonight ORLENE is about to make landfall on west coast of Mexico and ROKE is
moving away from Japan.

WEATHER ZONES
The SPCZ stretches from PNG across Solomons to Vanuatu and to a trough that
lingers over the Fiji area this week and may form a low L2 northwest of Fiji
by end of week.

HIGHS and LOWS
High H1 lingering south of Tahiti and slowly travelling East along 30S.
Low L1 crossing Aotearoa NZ tonight followed by a cold southwest flow for a
few days, with a trough extending back to Fiji.
HIGH H2 over 1030hPa travelling northeast across southern Tasman Sea and
central Aotearoa from Wed to Sat, with a squash zone of enhanced easterly
winds o its northern side.
Low L2 is expected to form northwest of Fiji this weekend as H2 moves off to
east of Aoteroa.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
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 64277762212
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>