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Warm Fall: Now Winter Starts?

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While mean temperatures were not far from normal in November, the highs were warm and the lows were cool.  However, the most remarkable statistic was the lack of snow.

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The Fall as a whole was quite warm, given the very warm September and October  (see my posts for Oct and Sept).  In fact, 2017 was the warmest Fall ever at Halifax Airport (note that meteorologists define Fall as Sep, Oct & Nov for climate purposes).

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Even more remarkable was the intensity of the hurricane season, with devastating hurricanes affecting the Caribbean and the USA.

Atlantic Canada was indeed fortunate that we missed the worst of these storms.  Even Ireland and the UK was hit (Ophelia).

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Looking ahead to December,  the pattern has changed: a warm ridge over western Canada and a cold trough to the east.  This pattern will result in systems tracking over, or to the south of the Maritimes. This results in all areas being close to the rain-snow boundary.

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For example, the map for Saturday night may be typical of what we can expect for the next few weeks.

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Stay tuned and stay safe

Jim

 

About Jim Abraham

Jim has spent about 40 years in the weather business. He has been an operational forecaster from Halifax to Whitehorse. Jim started the Canadian Hurricane Centre, and has flown into a couple of these storms. As a senior executive within Environment Canada, Jim has managed weather research, weather services, and weather/water/climate observing programs. Retired from Environment Canada, Jim is the Atlantic Director for the Canadian Climate Forum, the president of the Halifax chapter of the Canadian Meteorological & Oceanographic Society, a partner in Climaction Services, and a part-time meteorologist on CBC radio. He is still participating in national and international activities related to weather preparedness. Having witnessed unprecedented advances in the science and technology of meteorology. Jim hopes that this blog will also be educational; enabling users to better understand weather-related phenomena, better interpret available information, and ultimately better able to make decisions to protect themselves, their family and their property. Jim welcomes any questions and suggestions.

 

The views and opinions expressed in this content are those of the author and do not necessarily reflect those of haligonia.ca.

http://yhzweatherguy.ca

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