Alaskan Sea-Duction
Guru
- Joined
- Jul 6, 2012
- Messages
- 8,084
- Location
- USA
- Vessel Name
- Alaskan Sea-Duction
- Vessel Make
- 1988 M/Y Camargue YachtFisher
OK I need some advice from those that look at weather. Below is the weather forcast of Omni Bob. He is saying wait, MAY improve by Thursday next week.
However, my seasoned captain says if we leave Sunday we can at 10kts make Crescent City CA in 26hrs. We may or may not need to stay but if we do it would be about 10 hr layover. Basically he is saying we would be in front of the weather making its way up the coast. He is using NOAA and Sailing Weather - Marine Weather Forecasts for Sailors and Adventurers - PassageWeather
To: Captain Teseniar - M/Y INTERLUDE Fm: O.M.N.I./USA Home: Ocean Marine Nav Welcome to the Ocean... Tel: 302-284-3268
1720UTC 18 SEP 2013
The start of the trip early Sun/am should be met with weak high pressure ridge extending E-ENE across the northern California area. However, north/west of the weak ridge a broad gale low center is expected across the northern Gulf of Alaska. This low in combination with the main high cell well to the south will produce a moderate to rough long period WNW-NW swell northward along the coast of northern California to the Columbia River. In addition to the rough swells, a trailing cold front is expected to move eastward through Sunday reaching the WA/OR coast during Sun/night then weaken inland through Mon/am. The passage of the front will allow for shifting winds and for increasing WNW-ly sea/swells to build along the coast through Mon/23.
The low should weaken as it tends to move ESE toward the central British Columbia coast. At the same time, high pressure that was further south will tend to build north/east across the eastern Pacific with ridging extending ENE across the WA/OR coast through Tue/night-Wed/am. South of this ridge the winds will shift/veer to a more NW-N direction off northern California/southern Oregon, while easier northerly winds/seas develop along the central and northern Oregon coasts through Wed/25 and for most of Thur/26 due to this high ridge pattern.
Overall, this will be a challenging ride as conditions will likely encounter either rough swells or increasing wind/sea conditions from departure to arrival. Waiting does not seem to be a advantage as NW-N winds of 28-35kt, gusty/40-45kts are possible across northern CA and southern Oregion during Tue/pm through Thur/26
Basis your ETD early Sun/22-am northward toward the Columbia River along a coastal transit, expect:
Sun/22: WNW to NNW 10-18kts, could be as low as 05-12kts during the early morning hours (to sunrise). Seas 2-4ft. Swells: WNW-NW 6-8ft, 10-12sec. Winds tending to back WNW-WSW 10-17kts, seas 3-4ft with swells WNW-NW 8-10ft and period 9-11sec along the northern CA Coast through Sun/eve-night.
Mon/23: Winds shifting during the early morning hours WSW-WNW 15-20kt to as much as 25kt-30kt, gusty after the front moves through. Seas increasing 5-8ft with WNW-ly swells 8-10ft, 8-10sec early, increasing 10-13sec after the front through Mon/eve-night. Combined sea/swells of 10-12ft are very possible through the day along the coast.
Tue/24: Gradually veering WNW-NW to NNW 15-20kt, likely upto 20-25kt, gusty/30kts still possible through the morning. Seas 5-7ft. Swells WNW-NW 8-10ft (10-12sec) through Tue/midday. Winds tending to subside some near the Columbia River entrance during Tue/night-overnight; 12-18kts. This should help lower the sea heights to 4-5ft, maybe 3-4ft. Swells also come down during the day with a long period WNW 6-8ft Tue/pm.
Wed/25: Winds become fresh/strong along the California coast NW-N, even some NNE 25-35kt, gusty/35-45kts while slightly easier NW-N 15-25kts, gusty along the southern and central coasts of Oregon. Seas 7-12ft along the northern California coast while 5-8ft still possible along the Oregon coast.
Outlook data does seem to indicate some improved wind/sea conditions after Wed/25 as well as into the coming weekend through Sat/28 as the high ridge weakens and before a new cold front moves eastward across the NE Pacific Ocean. This might be just enough time for easier NW-N winds of 10-18kts and seas of 3-4ft and longer NW swells of 6-8ft developing along the coast from central-northern California to the Columbia River
You may wish to consider delaying your departure from Sausalito and northward to the Columbia River if the trend for the rough weather described above continues. We do suggest at least one more update prior to your ETD early Sun/am. Updating as requested. Please keep us advised of any changes to your itinerary. B/Rgds, Bob/OMNI
What is your expert guess? Go or wait until late next week?
However, my seasoned captain says if we leave Sunday we can at 10kts make Crescent City CA in 26hrs. We may or may not need to stay but if we do it would be about 10 hr layover. Basically he is saying we would be in front of the weather making its way up the coast. He is using NOAA and Sailing Weather - Marine Weather Forecasts for Sailors and Adventurers - PassageWeather
To: Captain Teseniar - M/Y INTERLUDE Fm: O.M.N.I./USA Home: Ocean Marine Nav Welcome to the Ocean... Tel: 302-284-3268
1720UTC 18 SEP 2013
The start of the trip early Sun/am should be met with weak high pressure ridge extending E-ENE across the northern California area. However, north/west of the weak ridge a broad gale low center is expected across the northern Gulf of Alaska. This low in combination with the main high cell well to the south will produce a moderate to rough long period WNW-NW swell northward along the coast of northern California to the Columbia River. In addition to the rough swells, a trailing cold front is expected to move eastward through Sunday reaching the WA/OR coast during Sun/night then weaken inland through Mon/am. The passage of the front will allow for shifting winds and for increasing WNW-ly sea/swells to build along the coast through Mon/23.
The low should weaken as it tends to move ESE toward the central British Columbia coast. At the same time, high pressure that was further south will tend to build north/east across the eastern Pacific with ridging extending ENE across the WA/OR coast through Tue/night-Wed/am. South of this ridge the winds will shift/veer to a more NW-N direction off northern California/southern Oregon, while easier northerly winds/seas develop along the central and northern Oregon coasts through Wed/25 and for most of Thur/26 due to this high ridge pattern.
Overall, this will be a challenging ride as conditions will likely encounter either rough swells or increasing wind/sea conditions from departure to arrival. Waiting does not seem to be a advantage as NW-N winds of 28-35kt, gusty/40-45kts are possible across northern CA and southern Oregion during Tue/pm through Thur/26
Basis your ETD early Sun/22-am northward toward the Columbia River along a coastal transit, expect:
Sun/22: WNW to NNW 10-18kts, could be as low as 05-12kts during the early morning hours (to sunrise). Seas 2-4ft. Swells: WNW-NW 6-8ft, 10-12sec. Winds tending to back WNW-WSW 10-17kts, seas 3-4ft with swells WNW-NW 8-10ft and period 9-11sec along the northern CA Coast through Sun/eve-night.
Mon/23: Winds shifting during the early morning hours WSW-WNW 15-20kt to as much as 25kt-30kt, gusty after the front moves through. Seas increasing 5-8ft with WNW-ly swells 8-10ft, 8-10sec early, increasing 10-13sec after the front through Mon/eve-night. Combined sea/swells of 10-12ft are very possible through the day along the coast.
Tue/24: Gradually veering WNW-NW to NNW 15-20kt, likely upto 20-25kt, gusty/30kts still possible through the morning. Seas 5-7ft. Swells WNW-NW 8-10ft (10-12sec) through Tue/midday. Winds tending to subside some near the Columbia River entrance during Tue/night-overnight; 12-18kts. This should help lower the sea heights to 4-5ft, maybe 3-4ft. Swells also come down during the day with a long period WNW 6-8ft Tue/pm.
Wed/25: Winds become fresh/strong along the California coast NW-N, even some NNE 25-35kt, gusty/35-45kts while slightly easier NW-N 15-25kts, gusty along the southern and central coasts of Oregon. Seas 7-12ft along the northern California coast while 5-8ft still possible along the Oregon coast.
Outlook data does seem to indicate some improved wind/sea conditions after Wed/25 as well as into the coming weekend through Sat/28 as the high ridge weakens and before a new cold front moves eastward across the NE Pacific Ocean. This might be just enough time for easier NW-N winds of 10-18kts and seas of 3-4ft and longer NW swells of 6-8ft developing along the coast from central-northern California to the Columbia River
You may wish to consider delaying your departure from Sausalito and northward to the Columbia River if the trend for the rough weather described above continues. We do suggest at least one more update prior to your ETD early Sun/am. Updating as requested. Please keep us advised of any changes to your itinerary. B/Rgds, Bob/OMNI
What is your expert guess? Go or wait until late next week?
Last edited: