View above of Catalinas is from a bit before 9:00 am MST - note that cumulus are already building over the mountains. View below is of heavy cumulus over mountains at about a quarter to seven pm last evening. Plot of rainfall (second below - from MesoWest) shows some light amounts at several sites in the east-central metro area for the 24 hours ending at 5:00 am this morning.
This morning's sounding (above) from TWC shows increased PW and CAPE, with a much lower lifted condensation level that is actually a bit below 700 mb. The steering winds are light, with variable directions, so slow moving storms with potential for heavy, local rain amounts.
Forecast of radar echoes above is from 06 UTC WRF-GFS run at Atmo and indicates early, heavy storms in metro area shortly after noon. Precipitation amounts through 11:00 pm tonight (below) indicates widespread rainfall across much of Pima County.
Finally, the 06 UTC GFS forecast for total precipitation through 12 UTC on Monday the 6th of July indicates a wet Holiday weekend.
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