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Weymouth Weather Brief: Saturday 13 Aug

Penny Tranter

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Headlines for today

• Winds similar to yesterday with sea breeze effect backing/turning left winds this afternoon

• WSW backing/turning left by 1200/1300 SSW - SW 11-16 KT gusts 14-22 KT

• Large wind angle deltas and variations in speed as sea breeze backs/turns wind left

• 30% chance of winds ONLY backing to SW at 1200

• Mainly dry with bright spells

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Synoptic Situation

Analysis Saturday 12/0100 Forecast Saturday 12/1300

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Model products Winds forecast loop

0900 Saturday

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Model products Winds forecast loop

1000 Saturday

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Model products Winds forecast loop

1100 Saturday

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Model products Winds forecast loop

1200 Saturday

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Model products Winds forecast loop

1300 Saturday

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Model products Winds forecast loop

1400 Saturday

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Model products Winds forecast loop

1500 Saturday

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Model products Winds forecast loop

1600 Saturday

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Model products Winds forecast loop

1700 Saturday

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Model products Winds forecast loop

1800 Saturday

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Model products Winds forecast loop

1900 Saturday

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Portland Harbour - Wind Forecast

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Weymouth Bay Nothe - Wind Forecast

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Sunday’s Weather

Forecast Sunday 14/1300 Wind forecast Sunday 14/1300

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Summary and uncertainties

• Winds similar to yesterday with sea breeze effect backing/turning left winds this afternoon

• WSW backing/turning by 1200/1300 SSW - SW 11-16 KT gusts 14-22 KT

• Large wind angle deltas and variations in speed as sea breeze backs/turns wind left

• 30% chance of winds ONLY backing to SW at 1200

• SUNDAY:

• Winds similar strength but W to NW 10-14 KT gusts 14-19 KT with SSW - SW sea breeze in afternoon

• Mainly dry with sunny spells

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Questions & answers

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Forecast products

• http://www.metoffice.gov.uk/loutdoor/olympics/event-manager/(General Weather Forecast, Race Areas Forecasts, Hourly Updates)

• This powerpoint brief is only available via the ISAF website.http://www.sailing.org/uploads/WPIR2011/MetOfficeDaily.PPT

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