Tuesday, September 29, 2009

Cool Mornings Along the Rillito Wash


Mornings have been very cool here at the house for more than a week now - with the exception of one or two mornings when the wind blew through the night. Lows have been in the middle to upper 50s and have been much cooler than the official low temperatures at TUS. For example, yesterday morning the low here was 55F and this morning the low was 57F. Down south at the airport (TUS) lows both mornings were 70F. So, we've been seeing almost a 50F swing here on the north side of Tucson between morning lows and afternoon highs.
The image above has nothing to do with the temperature discussion of course. There was a very large MCS to the south of the mouth of the Gulf of California yesterday morning and it intiated a push of moist low-level air northward up the GoC. The post above follows the interesting events southwest of Baja and along the southern half of the GoC.

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