Monday, February 20, 2017

More Light Showers/High Winds On Kitt Peak

Occasional light showers occurred over eastern Pima County Sunday (yesterday) and on into the night. Amounts from the northern 2/3 of the ALERT network are shown above for 24-hours ending at 06:00 am MST this Monday morning. Amounts were again generally around a tenth of an inch. Here at house we managed to get 0.19" as showers formed over the Tucson Mountains and moved our way a number of times (total here for the two days ended up at 0.24").

During coming week, short waves will tend to stay to our north and a brief warm up will be followed by cooler temps and some periods of west winds. Next possible precipitation at least a week away, according to GEFS forecasts.

I noticed that wind gusts were very strong out west at Kitt Peak on Saturday and Sunday, with 12-h maximum gusts ranging from 56 to 93 mph - as shown on the two time-series plots below. These are from the weather station on/at the Mayall 4-meter telescope, which is number 12 in photo above.

I don't know where this weather station is actually sited, which is of course information needed to assess exactly what these measurements might mean. I would guess that obstacle flow due to the telescope structure is amplifying the wind speeds. Any information from those in the know would be much appreciated.

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