Saturday, June 29, 2019

Brief Summary 28/29 June


View above from 3:00 pm MST yesterday afternoon (28 June) shows how high-based convection was around our area. Both TUS and DM reported thunderstorms but no measurable rainfall. I looked at ALERT and MesoWest and found only three sites in eastern Pima and Santa Cruz Counties with measurable rainfall. Max was about 0.15" at Florida Canyon (near or on the research grasslands on west side of the Santa Ritas).

Plot of CG flash density (below, from weather.graphics and ATMO) is for 24-hours ending at 6:45 am this morning. There was considerable CG flashes/thunderstorm activity, but very little rainfall - dangerous situation for wildfires. Plot indicates there may have been thunder here at house but I did not hear any.


Morning upper-air plot for TWC (from SPC - below) again shows a bit of middle-level CAPE and very dry low-levels. The wind field is very chopped-up below 300 mb. Another day with dry thunderstorms possible - WRF forecasts indicate most activity over higher elevations.



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