Wednesday, January 29, 2020

Sunny Morning In Tucson

Clear skies at sunrise this morning - view from University above.

Forecast above (from 00 UTC GFS) indicates a strong, short wave over Arizona this evening. But north-to-south trajectory of this system is bringing little moisture with it, and showers will stay mostly over the Rim country and White Mountains.

Forecast below, from same run, is for total precipitation through midnight on the 4rth of February - leaving us dry into start of next month.

Below shows GEFS plumes forecast for temperature at airport for coming week. I've added dots for current NWS forecast, showing that the plumes tend to be cooler than forecast highs and warmer than forecast lows. Differences are most pronounced when skies are clear.

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