NWS Phoenix has issued an "excessive heat warning" for Friday through
Monday of next weekend. The predicted high for Sunday is presently 119F, and I
suspect that it will go higher.
>
> I've been keeping aware of various aspects of climate change for
>many years now, conscious of the prediction that the southwest will be
>the first area to feel the aspects of higher temperatures and lower
>precipitation.
>
> A scenario has been developing in the GFS (Global Forecasting
>System) that gives reason for concern. A broad band of high pressure,
>very likely related to the Hadley Cell downflow, is developing from at
>least west of Baja, through the Gulf of Mexico, then north of the
>Bahamas. By next Thursday a strong high pressure cell will develop
>over northern Mexico, then mover northward and elongate over the
>weekend, covering Arizona, New Mexico, and Colorado. It may possibly
>enlarge further, stretching from southern California to Illinois.
>
> Until today, this strong high pressure area was outside the 7-day
>window of confidence, but now it has moved inside that window. High
>pressure equates directly to high daytime temperatures, and the pressure
>forecast for this scenario is quite high. And the air will be dry, so
>there will be no moisture to mitigate the temperature.
>
> I'm hoping that I will be wrong about this.
>
Chris
When the going gets weird, the weird turn pro
- Hunter S. Thompson
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