We’ve had a lot of very hot weather lately and now it’s even been given a name: a Heat Dome! This phenomena is the summertime equivalent of winter’s Polar Vortex. I need a weather dictionary to keep up with all these terms! Even though I’ve never heard of them before, apparently Heat Domes are not all that rare. What does this all mean other than it’s friggin’ hot outside?
A Heat Dome is a dome of heat (duh!) that is actually trapped in the atmosphere and becomes stationery. Atmospheric conditions have to be just right for a Heat Dome to occur. The Jet Stream of westerly winds is further north than usual – this time near James Bay. A high pressure system is parked over most of the US and parts of southern Canada. The air is apparently ‘heavier’ which causes it to sink, compress, heat up, and remain in the same place causing poor air quality. David Phillips from Environment Canada said “we are breathing in the same air as yesterday”. This re-circulation of stale air can be dangerous for certain people like babies, seniors, the chronically ill, and people with respiratory conditions.
Temperatures have been in the 30+C degree range plus with added humidex factored in makes it feel in the high 30s/low 40Cs. There have been Heat Warnings issued in major cities in Eastern Canada. In southern Ontario, there have been about 20 days this year of temperatures over 30C degrees whereas last year there had been 2 by this time.
This morning, the temperature outside felt cool and refreshing so I opened up all the windows! I’ll shut them when it starts to feel hot out and close the curtains as the sun moves during the day – to keep the house as cool as possible. I do have air conditioning but I hate to run it in the daytime unless absolutely necessary, like on Friday. I’ve already had it running twice as much as last year (5 days). Sometimes it’s just hot and I can handle that. It’s the humidity that makes me cave and turn on the A/C because I sometimes feel that it’s hard to breathe. Usually the outside temperature cools down during the night so I turn off the A/C and open up some windows to cool the house down naturally.
For my garden, the heat has been brutal. Luckily, this heat has spawned afternoon/evening thunderstorms which water my garden and refill my rain barrels.