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© Crown copyright 2009 Synoptic Situation Analysis Saturday 12/0100Forecast Saturday 12/1300
Citation preview
© Crown copyright 2009
Weymouth Weather Brief: Saturday 13 Aug
Penny Tranter
© Crown copyright 2009
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
© Crown copyright 2009
Synoptic Situation
Analysis Saturday 12/0100 Forecast Saturday 12/1300
© Crown copyright 2009
Model products Winds forecast loop
0900 Saturday
© Crown copyright 2009
Model products Winds forecast loop
1000 Saturday
© Crown copyright 2009
Model products Winds forecast loop
1100 Saturday
© Crown copyright 2009
Model products Winds forecast loop
1200 Saturday
© Crown copyright 2009
Model products Winds forecast loop
1300 Saturday
© Crown copyright 2009
Model products Winds forecast loop
1400 Saturday
© Crown copyright 2009
Model products Winds forecast loop
1500 Saturday
© Crown copyright 2009
Model products Winds forecast loop
1600 Saturday
© Crown copyright 2009
Model products Winds forecast loop
1700 Saturday
© Crown copyright 2009
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
0
45
90
135
180
225
270
315
360
Time (local)
Win
d D
irec
tion
5
10
15
20
25
Win
d Spe
ed (k
nots
)
Wind Direction & Delta Wind Speed Wind Gusts
© Crown copyright 2009
Weymouth Bay Nothe - Wind Forecast
0
45
90
135
180
225
270
315
360
Time (local)
Win
d D
irec
tion
5
10
15
20
25
Win
d Sp
eed
(kno
ts)
Wind Direction & Delta Wind Speed Wind Gusts
© Crown copyright 2009
Sunday’s Weather
Forecast Sunday 14/1300 Wind forecast Sunday 14/1300
© Crown copyright 2009
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
© Crown copyright 2009
Questions & answers
© Crown copyright 2009
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
© Crown copyright 2009
Met Office ForecasterDuty Mobile :
• 07917 067934