The cool ocean water does help our Nova Scotia weather during the summer months. It does this by stabilizing overriding air masses and this suppresses any local storms from developing.
However many storms do pass close to the Atlantic coast causing parts of Nova Scotia to average more storms than in other parts of Canada. Our winter storms can be bad with high winds and lots of precipitation. These storms may pass over quickly, or they can stall and batter the region for days.
These nor'easters can occasionally produce hurricane-force winds gusting to over 150km/h. These can peak wave heights to 14m and at high tides they can produce storm surges of more than a meter. The minimum wind speed for a storm to be classified as a hurricane is 72 mph or 115kph.
It is not unusual for us to receive at least a couple storms during the winter that drop 25cm or more of snow on us. We may also experience several ice storms, freezing rain and blizzards during the winter months. But bad as that all sounds, we also experience several thaws during our winters offering some very nice days indeed. Our Nova Scotia weather is known to change from day to day.
In late summer and fall we are also vulnerable to remnants of hurricanes and tropical storms coming up from the south. Most of these have lost most of their punch however by the time they hit us, but they will still bring in very high winds and heavy rainfall.
On the good side of our Nova Scotia weather, we are not known for a lot of severe thunder & lightening storms. Our average of thunder & lightening is about 10 days per year, which is down from any other Canadian province.
Although a few tornadoes have been recorded in Nova Scotia, they are very rare. We do have several reports of waterspouts over shore waters, but they rarely hit landfall.
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