Latest US Record-Breaking Heat Wave Due to Wobbling Jet Stream

Another brutal record-breaking heat wave has hit the US west, due to the new wobbly path of the jet stream, reports Andrew Freedman at Climate Central, adding to the already dire drought conditions and further worsening wildfires.  The furnace-like heat came because of a “stuck” weather pattern that set up across the U.S. and Canada. The jet stream — a fast-moving river of air at airliner altitudes that is responsible for steering weather systems, and normally flows fairly straight from west to east —developed massive undulations, like a giant slithering snake, setting up what meteorologists refer to as a deep “ridge” across the Western states, and an equally deep trough seting up across the Central and Eastern states. While each heat wave has ties to short-term weather variability, increasingly common and intense heat waves are one of the most well-understood consequences of manmade global warming, since as global average surface temperatures increase, the probability of extreme heat events increases by a greater amount. Data already suggests that heat waves are becoming more common worldwide.

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Record-Breaking US West Heat Wave Due Wobbling Jet Stream reports Andrew Freedman at Climate Central, which keeps a high pressure system “stuck” over the west, heating it up. Dangerously hot forecasts are coming true, breaking records, and creating rare persistent temperatures of 115o F or more … bring out the solar cooker!


About melharte

Mel (Mary Ellen) Harte is a biologist (PhD) and climate change educator. She co-authored the free online book, COOL THE EARTH, SAVE THE ECONOMY, available at www.CoolTheEarth.US, and writes the CLIMATE CHANGE THIS WEEK column at the HuffingtonPost. Living summers in the alpine Rockies, she is on the frontlines of watching what climate change can do. Her diagnostic digital photographs of wildflowers have appeared in numerous publications.
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