![]() ![]() More specifically, the track of typhoons in the western Pacific Ocean can reinforce or temporarily disrupt the jet stream pattern across the entire Northern Hemisphere. So, what happened to the forecast? WATCH: Where are all the fall storms? Why things are about to changeĮvery fall pattern is at risk to be disrupted by the impact that tropical systems have on the jet stream. ![]() and the western Prairies with record-breaking warmth and summer-like temperatures at times. ![]() Meanwhile, warmer than normal temperatures have dominated across B.C. While a couple shots of cooler weather should always be expected as we progress through the fall season, we did not expect so many interruptions to the warm fall weather - with even colder weather on the way, lasting through the third week of October. RELATED: Don't be fooled by Canada's gentle start to fall, storms are on the way While Atlantic Canada has been warmer than normal, we have seen several shots of colder weather in Manitoba, Ontario and Quebec, and that pattern will persist until the final week of October. Our expectation was that as we got deeper into fall, we would see a shift in the pattern with shots of colder weather coming into Western Canada while the eastern half would remain primarily warmer than normal. However, the focus of the warmest weather has remained across Western Canada. The temperature anomaly map below has very little blue (colder-than-normal values) on it - just like the forecast map. 1, we can see that most of Canada has indeed been near normal or warmer than normal. Here is our original fall forecast map.Īs we look back at the temperature pattern since Sept. Our Fall Forecast highlighted the expectation that we would see a gentle start to the season with most of the country seeing near normal or warmer-than-normal temperatures, especially during the first half of autumn. While parts of it have worked out as expected, there have been some surprises and even some glaring errors that we need to address. As we head into mid-October, it is time to revisit the Fall Forecast. ![]()
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