El Niño has officially begun, bringing warmer ocean temperatures in the equatorial Pacific and leading to hotter weather around the world.
The big picture: El Niño is a natural climate pattern that can exacerbate the effects of human-caused climate change.
* The hottest years on record tend to occur during El Niño events.
Regional impacts: The Northern U.S. and Canada can expect drier, warmer weather, while the Southern U.S. may experience heavier rainfall.
* Canada is already dealing with widespread wildfires following an abnormally hot spring.
Silver lining: El Niño generally results in fewer Atlantic hurricanes due to unfavorable wind conditions for storm development.
* However, increased Atlantic water temperatures due to climate disruption might still lead to a slightly above-average number of storms this year.
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