Bruce’s Briefs: Wx for 7, 8, 9, 10 Jan. Duwamish Head Race

Bruce’s Briefs: Wx for 7, 8, 9, 10 Jan. Duwamish Head Race

Our winter of wild weather continues and we are not even getting close to the worst of what is happening in the central and eastern US. Not surprisingly, we are ahead for rainfall on this date after a record-setting fall by .75” compared to the average however we are 2.1” behind compared to where we were a year ago. Then there’s the snowfall in the Olympics and Cascades which is way ahead however there is still a lot of winter left and in a La Niña year, we should expect more. The only problem is that we could, like last year, have another week of very warm weather which could quickly take the snowpack down. We will see.

The good news is that while we are having some wild wind in the Straits and Admiralty Inlet today, gale warnings, the conditions for tomorrow’s Duwamish Head Race look almost pleasant. Today’s surface analysis chart and sat pic show the strong frontal system pushing through the area today and the post-frontal clearing which is bringing those gale-force westerlies down the Straits. This gradient will ease late this afternoon and into the early evening. Another weak cold front will push through the area tomorrow bringing south to southwesterly breeze, 8-12 knots, to the central Sound for most of the day. The front will also bring SE breeze of 15-20 knots to the north part of Admiralty and the Eastern end of the Strait of JdF.

The keys for tomorrow’s race will be a clear air downwind start, finding and staying in the breeze while sailing the shortest course up to Alki, staying in the breeze on the reach from Alki to Duwamish, then have the boat set up for the reach from Duwamish to Blakely Rock (barber haulers already rigged), sprit boats with code 0’s will love this leg. Remember the rocks on the north side of Blakely Rock and then stay in the breeze until you can harden up on port tack and then tack to starboard for a long tack back to the finish. The breeze will tend to be from the SSW so starboard will be favored just don’t get too close to the east side of the Sound as the breeze will tend to be lighter. Also, watch the boats astern of you and if you get headed and the boats outside stay lifted, tack immediately and get back out to the SW breeze.

As you get closer to Three Tree Point and after mid-afternoon, the breeze will ease to less than 8-knots and continue to ease as well as back to the south. Finishing before dark would be good.  It is still going to be cold out there so dress appropriately and have plenty of warming fluids available to your crew.

Be safe and have fun.

Bruce’s Briefs: Wx for a Happy New Year!

Bruce’s Briefs: Wx for a Happy New Year!

I don’t know about you but we’ve certainly had enough of this freezing, cold weather. The good news is that the end is in sight starting Saturday with the temperature remaining above freezing for all of next week. We are going to have one more very cold evening tonight with another blast of Fraser River outflow. As a warm front comes into the area tomorrow morning, temps will finally rise above freezing.

Today’s surface analysis chart shows a large area of high-pressure (1033MB) in the mid-Pacific with another area of high pressure (1026MB) over southern British Columbia. Between these two highs is a stalled occluded front which will slowly move over us tomorrow. By tomorrow the inland high will strengthen to 1036MB while the offshore high will weaken to 1027MB. This also signals a change in the jet stream as it changes from a meridional flow to a more zonal flow. Today the jet stream is coming ashore near Ensenada, over the next few days it will move to the north and by the 4th of January, it will be coming ashore in Southern Oregon. This is what will keep the temps above freezing and allow more storm systems to come into the Pacific Northwest.

Today’s satellite pic is amazingly clear especially when you realize that the white you are seeing over land is actually snow on the ground. Note how Lake Tahoe stands out.

We will have breeze over the weekend as the Fraser outflow brings us North to NE winds of 15-20 knots. As the next front approaches, the winds will shift to a pre-frontal SE and build to 20-25 knots with 25-35 knots a possibility on Sunday. Once again probably a good time to check the boat and those mooring lines and fenders.

Have a Happy and Safe New Year!

Bruce’s Briefs: Wx for 24, 25, 26, and 27 Dec. It’s definitely going to get COLDER!

Bruce’s Briefs: Wx for 24, 25, 26, and 27 Dec. It’s definitely going to get COLDER!

Lots of very interesting stuff in the weather charts, sat pic and Doppler radar. However, if you want some indication of just how cold it’s going to get just look at the 72 hour surface forecast chart from yesterday. The ice accretion line runs from near Yakutat, Alaska down the coast to halfway down the outside of Vancouver Island. This means the ocean (saltwater) spray will freeze when it hits your vessel. That is COLD!

The other interesting charts from today are the surface analysis, sat pic, and Doppler radar images. They all show the low centered just off our coast which will move onshore this afternoon bringing small craft advisories and gale warnings to our waters. This, in turn, will facilitate the arrival of an arctic front late Saturday and into Sunday brought in by a strong outflow from the Fraser River Valley. The 48 hour surface forecast chart shows a 42MB difference between the low over our area and the high in BC, note the tight spacing of the millibars over this area which will bring gale force northeasterlies to the Bellingham, the San Juan Islands, and the eastern Strait of JdF.  

Doppler Radar

This will also be reinforced by the jet stream being in a very strong meridional flow configuration. The main reason for this is an unusually strong mid-Pacific high-pressure system centered south of Kodiac and west of the mouth of the Columbia River. Combined with low pressure over our area, the jet stream is sandwiched between these two pressure systems which not only show up on the surface charts but also on the 500MB charts as well. This will keep a succession of frontal systems marching into California with the jet stream coming ashore near the California- Mexico Border.

So just how cold will it get? It’s possible that the high temperature from Sunday through Wednesday will never get above freezing and the low temperature could be down in the 15-16 degree F range. The coldest temps we’ve seen in a long time. Combined with the possibility of 4+” of snow in the lowlands starting Saturday night and continuing into Sunday we could be in for some very tough sledding. (Couldn’t help myself!)

Satellite Image

I also got some questions about how this will affect boats moored in saltwater. The boats in freshwater definitely will need heat and make sure to leave the locker doors and floorboards over thru-hulls open so the heat can circulate. Interestingly enough the same will apply to boats moored in saltwater especially in areas like Shilshole and Elliott Bay. The reason is that with all the rain we’ve had, the freshwater will flow into these areas and being less dense than saltwater, will stay on top of the saltwater and potentially freeze especially if the wind is light. Regardless, it’s just a good excuse to go down and carefully check the boat over.

So have a very Merry Christmas and a Happy New Year!  

Bruce’s briefs: Wx for 17, 18, 19, 20, and 21 Dec. The Winter Solstice is almost here!

Bruce’s briefs: Wx for 17, 18, 19, 20, and 21 Dec. The Winter Solstice is almost here!

The wild weather just keeps getting wilder with no end in the immediate crystal ball. At least in the Pacific NW, we’ve only had some breeze, not out of the ordinary, and the wettest fall on record. Year to date we are at over 6” ahead for the year but just about an inch behind for December. Don’t worry there’s more coming this weekend and the folks in California will be getting more rain and more snow in the Sierra Nevada’s.  We won’t even begin to talk about what’s happening in the rest of the country. Oh, and let’s not forget the powerful late-season Typhoon Rai slamming into the Philippines.

Today’s surface analysis chart shows a series of low-pressure systems converging on the West Coast with a very strong high-pressure system (1045MB by the 19th) in the mid-Pacific. All of the low-pressure systems have various frontal systems attached to them extending from the Gulf of Alaska to Hawaii. These are reinforced by a strong meridional flow in the jet stream, see the 500MB chart for the 19th of Dec. This will continue to bring moisture-laden air ashore all along the West Coast.

Today’s Doppler

The next active frontal system will move ashore tonight and through the area on Saturday bringing a strong SE breeze to the coast, the east end of the Strait of JdF,  the San Juan Islands, and Bellingham Bay. The Doppler Radar today clearly shows the rain shield approaching the Coast. The coast could see a breeze to 35-40 knots while the other areas named above could see 40-50 knots of SEasterly. The good news is that because of the jet stream these are fast-moving systems with the post-frontal SW showing up at around 0600 hrs Saturday morning on the coast. This breeze will work its way down the Straits by mid-morning Saturday with gale-force westerlies in the Straits to the east of Race Rocks, and 20-25-knot south-westerlies in the Islands and Bellingham Bay. These will hold until early evening Saturday after which the gradient will ease over the Salish Sea.

By Sunday morning flow over the Islands, Bellingham Bay and the north end of Admiralty Inlet will be east to northeasterly as a strong Fraser outflow develops.  By mid-morning Sunday winds could reach 25-35 knots in the northern part of the San Juans and Bellingham Bay. Sunday afternoon this flow will extend across the Straits and down the Sound with northerlies of 15-25 knots. This will last into Monday morning before that gradient will begin to ease.

So while you may have the boat set up for strong southerlies, Saturday might be a good day to check those lines and set some up in anticipation of northerlies.

Today’s Radar

Then finally on Tuesday, we can celebrate the Winter Solstice after which the days will slowly become longer and winter will have officially begun. The Solstice officially happens at 0759 hrs PST on Tuesday morning. We will be celebrating later in the afternoon.

Have a great weekend. 

Bruce’s Briefs: Wx for 10, 11, 12, 13, and 14 Dec. Not much racing but plenty of wind and rain coming!

Bruce’s Briefs: Wx for 10, 11, 12, 13, and 14 Dec. Not much racing but plenty of wind and rain coming!

Sorry to be late with this however we’ve been watching this system as it comes onshore and it will be the strongest system we’ve had so far this winter. Good for plenty of snow in the mountains however the breeze along the coast, the central Sound, and the north part of the Salish Sea will be substantial. We already have 40-knots from the SSW at Destruction Island and 35 from SSW at West Pt. Hope you’ve got the extra mooring lines and fenders rigged!

The surface analysis chart and the sat pic show this system getting wound up and coming right into the Pac NW. The cold front attached to this system extends well out into the Pacific and with the 500MB chart we are in for a continuing onslaught of wind and rain. The 48 hour surface forecast chart also shows the ice accretion line extending south to 52N and with the jet stream aiming south of us we are also in for cooler conditions as well.

Have a great weekend but stay safe.

Bruce’s Briefs: Wx for 3, 4, 5, 6, and 7 Dec. Winter Vashon!

Bruce’s Briefs: Wx for 3, 4, 5, 6, and 7 Dec. Winter Vashon!

While the Midwest is experiencing record high temps and a complete lack of snow, the NWS has issued a Blizzard Warning for the summit of Mauna Kea where a foot of new snow is expected combined with winds of over 100-knots! In the meanwhile, Seattle is now ahead of the average rainfall for this date by over 5”. No Climate Change going on in any of these places.

Today’s surface analysis chart shows a series of weak high-pressure systems over the Pacific Northwest with more low-pressure systems headed our way. This weak high-pressure system has given us northerly breezes over most of the Sound for the last 30 hours and with 15-22-knots of breeze, today would have been a perfect day for the Winter Vashon Race even with a wind chill of freezing. As we know, the first days of high pressure are the best days for wind. By tomorrow, however, this will all change as another weak low-pressure system approaches the Oregon coast. While it is weak, it will still be strong enough to influence our weather tomorrow morning before an offshore high rebuilds in the afternoon. As always, the models are not in agreement about the timing of this transition.

December 3

The wind in the starting area will start as a southerly of about 10-knots before it starts to die and become a drainage easterly of 5-knots or less. Gradually a northerly flow will develop over the Salish Sea starting at about 10-knots and then building to 15-18 knots by mid to late afternoon. This northerly will hold until about sundown when it will start to ease and shift back to a weak drainage easterly before going very light. Try to finish before about 1800 hrs.

Navigators and tacticians will be a busy bunch trying to figure out the best way to manage the transition zones. You’ll need to keep your head out of the boat and watch the guys who really know their way around the South Sound.

Be careful and stay warm out there! Please leave your AIS on and we’ll be watching from just above Brace Point.

Bruce’s Briefs: Wx for 19, 20, 21, and 22 Nov 2021

Bruce’s Briefs: Wx for 19, 20, 21, and 22 Nov 2021

We are well ahead for rain this month with 7.5” in the gauge already which is just about the total for the entire month, and there’s more coming, just not this weekend.

As you can see from the Sat Pic, there is already clearing in the Straits and high pressure is starting to build over the entire Pacific Northwest. So while it should be a beautiful weekend, there won’t be much wind over the inland waters. The Gig Harbor LeMans racers had better be finished by 1300 hours since the wind is going to go from light to mostly non-existent. There will also be patches of light and variable over most of the Salish Sea.

Looking at the surface charts you will see a fairly large high-pressure system (1031MB) off the central Oregon coast today and then a lobe of that system will develop over the Pacific Northwest tomorrow resulting in no pressure gradient and therefore little to no wind.

The 24-hour surface forecast chart shows the high strengthening to 1033MB and this will help to send the next system to the north of us. The interesting feature on this chart is the surface low south of Kodiak (981MB) which will deepen to 978 MB as it crosses the Gulf of Alaska and approaches the northern part of the SE Alaskan coast. Not only is there a fair amount of wind with this system (45-55 knots) note the heavy fog! How much fun can you have in high winds, big seas, and thick fog, I don’t care how big the ship is that you’re on.

Then we go out to the 48-hr surface forecast chart which is even more interesting as it shows a developing low-pressure system (976MB) expected to deepen to 952MB over the next 24 hours, a real-world example of bombogenesis!  This chart also shows a developing low-pressure system (1007MB) off our coast which will bring a series of cold fronts into the West Coast early next week. More rain and mountain snow for the Cascades and Sierra Nevadas as far south as LA. The jet stream will come ashore north of us by Sunday but then drop to the south of San Francisco by the 23rd of Nov. This will also bring cooler temps into the Pacific NW.

Enjoy the weekend, and have a great Thanksgiving. 

Bruce’s Briefs: Wx for 12, 13, 14, and 15 Nov. Round the County!

Bruce’s Briefs: Wx for 12, 13, 14, and 15 Nov. Round the County!

There are some signs that boating may be returning to normal with 114 entries for this weekend’s Round-The County Race. I think that this would make the RTC the most popular race this year. Well done OIYC, but then again they always do a great job with this event.

Then there’s the weather and the tides as there always is up in the Islands. Weather has been a big topic this week with big breeze, big rain, lots of snow in the passes, and even a tornado warning for the Kitsap Peninsula. Now as you can see from the Doppler Radar, today’s sat pic and surface weather analysis, it’s all changing. The big breeze is easing until at least Saturday afternoon and into Sunday morning when another frontal system will roll over the area. There is clearing to the west and the Doppler is just showing scattered rain showers. So unless you live on a steep slope, it’s all good!

Tides are always interesting for the Race and with light air forecast for tomorrow luckily they won’t be much of an issue. The real problem will be Sunday in Rosario Strait with slack at 1500 and the ebb starting, coinciding with the breeze easing off.

Tidal Currents

Lawrence Point Orcas Island Saturday 13 Nov

0612       Slack

1006       Max Flood           2.3 knts

1518       Slack

1824       Max Ebb               .97 knts

Turn Point Boundary Pass Sunday 14 Nov

0724       Slack

1130       Max Flood           2.3 knts

1454       Slack

Rosario Strait Sunday 14 Nov

0824       Slack

1130      Max Flood           1.75 knts

1506       Slack

1854       Max Ebb               2.33 knts             

The big picture for the weather shows the front moving through today with that persistent but weak high-pressure system off the coast of California,  with a lobe extending up into eastern Washington. This high will become more dominant tomorrow with the pressure gradient easing over the racecourse through the day. 

Saturday Summary

0900 Start to Lawrence Point      S-SE        8-10 knot

1200 Lawrence Pt to  Patos          S-SE       5-8 knots

1400 Patos to Turn Point              SE           5-8 knots with 6-12 knots near Turn Point

1600 Turn Point to Finish              SE           8-15 knots

1800 Turn Point to Finish              SE           15-25 knots

Overnight in Roche Harbor, it will be breezy and will hold into the Sunday morning start.               

Sunday Summary

0900 Start to False Bay                  S              25-30 knots

1100 Flase Bay to Davidson Rk    S              20-30 knots

1300 Iceberg Pt to Davidson        S              10 knots at Iceberg becoming 10-20 near Davidson

1500 Iceberg to Davidson             S              5-10 knots becoming 5 at Davidson, 10-12 at Lydia Shoal

1700 Iceberg to Lydia                     S              0-5 knots.

By Sunday morning the front will be moving rapidly off to the NE and dragging the breeze with it. The models are not in agreement about how fast this will happen. The zonal flow of the jet stream will keep this pattern coming well into next week.

For Saturday I have Zvi around the course and finishing at around 1500 hrs, the J-111 Raku finishing at 1609, The Beneteau 36.7 finishing at 1703, the J-35 at 1709, the J-105’s in at 1713, and the J-30’s in around 1752hrs.

For those boats thinking about heading South immediately after the race you’ll be able to get across the Straits in very mild conditions however once you enter Admiralty, the breeze will pick up and you’ll be powering into 20-25 knots from the due south.

Have a great race, prepare accordingly, and be safe.  Keep your AIS on so I can at least enjoy the race from the Sailish.com Weather Center.

Bruce’s Briefs: Wx for 5, 6, 7, 8, and 9 Nov.

Bruce’s Briefs: Wx for 5, 6, 7, 8, and 9 Nov.

An inch of rain here, an inch of rain there, it all adds up proving once again that November is the wettest month of the year and while it’s only the 5th of November we are already 2.33” of rain ahead for the month. Plus there is just a steady line of fronts headed our way bringing wind and more rain.

Today’s surface analysis chart and sat pic show the front that went through earlier today along with nine other areas of low pressure. For the most part, they seem to follow the pattern we discussed last week with the low-pressure systems weakening and dissipating as they hit the coast. A weak ridge of high pressure builds behind the front and that tends to drive the next system to the NW, N, or NE. It’s only temporary as the zonal flow of the jet stream will continue to supply us with more systems bringing cooler temperatures, more rain, and more wind through much of next week. Also, note the 48-hour surface forecast chart which shows a 12 on the Roser Low Index Scale which is pretty high for this early in the year. It definitely is November.

It will be a great weekend for sailing especially in the Central Sound where both days should have consistent southerlies of 15-25 knots with some higher gusts, especially on Saturday afternoon.

If you’re not going out sailing it might just be a good idea to head on down to the marina and check those mooring lines and fenders not just on your boat but maybe your neighbors as well.

Next week we’ll have a delivery forecast on Wednesday for those heading up to Round the County and a Race Forecast on Friday. Could be a great one.

Enjoy the weekend!

Bruce’s Briefs: Wx for 29,30 and 31 Oct! Enjoy this weekend, more rain next week!

True, the first big storm of the fall was a little early this year but not out of the ordinary, just remember the Oct 12th Storm a few decades back. Plus, just like that, we are suddenly ahead on rain for the year, having gone from .75”  behind last weekend, we are now almost 1.0” ahead as of today and we still need more. Especially in Eastern Washington. All in all, it is acting very much like another La Niña winter.

The really good news is that it is going to be a very nice weekend in the Pacific NW with high pressure building over the area as the front is sliding off to the south. Today’s surface analysis chart and sat pic confirm that clear skies are coming. Following the typical pattern for the Pac NW, the best day for wind will be the first day that high rebuilds over the area and that will be late today and through Saturday. The interesting part is that it’s not because the high is building offshore as we might find in the spring and summer. Instead, we will have a building high-pressure system inland over lower BC. This will have the effect of bringing the breeze in from the N-NE and bringing the temps down, not to freezing but definitely cooler. This building high (1036MB) will also act as a block for the next series of storms coming across the North Pacific.

October 29

As you can see from today’s surface chart there is a fairly impressive low aimed right at us and strengthening from 975MB to 968MB. Then on the 30 Oct Chart as it it hits the high it takes a big lefty toward Kodiak. The Oct 31 surface chart shows another developing low-pressure system off of Oregon with yet another strong low-pressure system (982MB) in mid-Pacific tracking towards the West Coast. The other interesting feature to track is the jet stream with primarily zonal flow today becoming meridional by Sunday and then returning to zonal by the 2nd of November. The upper-level forecast chart for the 2nd of November also shows a flow that begins to look like yet another Pineapple Express if there’s any moisture associated with that low and its attached frontal system.

Plenty of racing in the Central Sound this weekend and Saturday will be the day with plenty of breeze, like 15-22 knots out of the N-NE. As always, tidal currents will make life interesting, especially in the afternoon.

Tidal Current at West Point.

30 Oct

0906       Max Flood           .83knots

1300       Slack

1436       Max Ebb               .34 knots

1806       Slack

31 Oct

1006       Max Flood           .75 knots

1342       Slack                     

1518       Max Ebb               .35 knots

1842       Slack

Since the flood tide will be with the wind, expect the flood to last a bit longer and the ebb to start a bit later. Your best indicator of the change will be that the sea state will change from relatively smooth to shorter and choppier conditions.

Sunday the breeze will remain from the N-NE however it will be in the 5-12 knot range and should hold through the day. While the temps may be cool at least there will be no rain.

Enjoy the weekend.

Ed. Note: Good luck to all you race-your-housers. Looks like some good breeze for it! -KH