It has been a dreary, very dry (currently 82F at airport with -8F dewpoint giving RH of 3%), day this Sunday with gray and dirty skies. Looks like more dust coming by tomorrow and perhaps some showers late in day. The U of A Atmo WRF-GFS forecast from 12 UTC this morning, top, continues to forecast precipitation through 11 pm Monday night to occur mostly on the mountains, with no rainfall right in the metro area. The model forecasts a slight touch of snowfall at only the very highest elevations. The coarser resolution NAM forecast (bottom) for same period has the precipitation smeared out spatially, but with this considered, the two forecasts are quite similar for southeast Arizona, indicating another event much like that of 27 February (the last rainfall here).
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