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Commanders Weather Corporation
Tuesday 12:00, 07.17.07

From: Commanders’ Weather Corporation
Route: Opua, NZ to Tahiti
Est position: approx. 34 20S/176 10E, 12utc Tue, July 17, 2007
Prepared: 1700utc Tue, July 17, 2007

Summary

  • Next 7 days look good
  • Center of the 1007MB low will slide E of NZ today
  • Increasing your W winds and turning them out of the WSW to SW duringthe 18th and 19th
  • Very weak area of high pressure fills in behind the low - lighteningyour winds out of the SW during the 19th
  • The next, strong low/cold front has pushed across Tasmania and into the SW Tasman Sea early today
  • This low is still forecast to deepen as it crosses the Tasman duringthe 20th and slides E across the NZ Northland on the 21st
  • Helping to build your winds out of the NW ahead of the front from the 21st through the 24th
  • The intense low is expected to move S to near 45S/175W by 00utc on the 22nd, but the 989MB low will be strong enough to keep NW winds gusty alongyour route through the weekend
  • Winds from the strong high pressure that follows this low are expectedto back your winds out of the SE and then E during the end of your trip

    • Routing

  • Rhumbline looks good, at least for the first week, in the W clocking to NW winds
  • Might have to adjust your routing for the last 3 days, as the stronghigh catches up to you
  • Routed you around 170nm/day in lighter winds on Friday, but usually figured you for 200 nm/day

    • Wind forecasts
    Wind directions are TRUE, wind speed in kts, and time is UTC

    Wed, July 18
    00: 280-260/15-23 g30 nr 34S/178 10E
    06: 280-260/14-22 g30
    12: 270-250/12-20 g25
    Weather: Variably cloudy, with increasing chc of showers/squalls
    Seas building to 8-10ft

    Thu, July 19
    00: 260-240/12-20 g30 nr 32 40S/178W
    06: 240-260/10-18 g25
    12: 260-290/10-16
    Weather: Variably cloudy, with some showers/squalls
    Seas diminishing to 5-8ft

    Fri, July 20
    00: 280-300/10-18 near 31 30S/175W
    12: 290-310/10-15
    Weather: Variably cloudy, with some showers / squalls
    Seas diminishing to 4-7ft

    Sat, July 21
    00: 310-330/13-20 g30 near 30 20S/172 20W
    12: 320-340/15-23 g30
    Weather: Variably cloudy, with scattered showers/thunderstorms
    Seas building to 5-9ft

    Sun, July 22
    00: 320-340/18-25 g35 near 29S/169W
    12: 330-350/15-22 g30
    Weather: Variably cloudy, with isolated chc showers/thunderstorms
    Seas building quickly to 8-11ft

      posted by Frank | July 17, 2007  

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