“Holy crap that was a big gust!” (My dad was there – I had to keep it PG)
After a long but eventually fruitful day of fishing in the drizzle, we pulled into Matheson Inlet in Haida Gwaii for a quiet night. Our weather pattern had changed a couple of weeks before as the abnormally strong Pacific High of spring 2015 regressed into something that we think resembled normality for BC’s north coast- regular dousings interspersed with frequent but short lived sunny stretches. In Haida Gwaii, these low pressure systems were textbook: sunshine slowly disappearing into the gradually thickening cloud bank of the warm front, drizzle followed by a short stretch of unsettled weather, and then the thick, wet cumulus of the following cold front. The passage of these systems never lasted long, and were always followed by a day or two of warm sunny weather before the next system arrived. In addition, none of the lows to this point had been were particularly deep or violent.
This changed in Matheson Inlet as the next low moved though the next day. Nothing too extreme, just enough to remind us of the value of good ground tackle and conservative procedures. We were also fortunate to be sitting alone in completely enclosed bay with lots of swinging room. We had 7:1 out, 100′ of which is chain: it pays to be prepared to sit out a blow.
The thing I found most interesting about the day is that I’m convinced that the wind was far less strong outside the bay. The topography of Moresby Island – relatively tall peaks on a very thin stretch of land – lends itself to places where the wind is accelerated as it moves through the passes between peaks and down the valleys. Environment Canada’s excellent resource on coastal weather explains it like this:
The narrowness of Moresby Island allows southeast winds along the east side of the island to flow over top and hit hard onto the waters of the inlets on the west side. In strong wind conditions, this makes it difficult to anchor or find shelter. The southernmost part of Haida Gwaii is particularly difficult in this regard, with Gowgaia Bay and Tasu Sound two examples of places where gusty winds come down off the mountains.
I can attest that the above is also true, but in the reverse, when strong SW’ers blow. For us, these gusty winds meant sustained winds of 25 kts, with gusts to 46, or almost double the sustained speed. The worst winds were during daylight and our situation was very secure, so we relaxed and enjoyed the spectacle. Thank goodness for good anchors!