Monday, June 28, 2021

Gusty Winds This Morning/Increasing Chance Showers This Week

Strange yellow/orange skies at sunrise this morning (above and at bottom). Strong easterly winds have brought in dust and perhaps some smoke aloft from the east.Winds have gusted just over 40 mph at both the airport and Pioneer Airfield early this morning, with gusts over 30 mph fairly common across southeast Arizona.

Hurricane Enrique has not intensified and remains a fairly unorganized Cat 1 storm - visible image above from 14 UTC. The current forecast from NHC (below) has shifted eastward and takes the weakening storm/depression eventually across southern Baja during the week. The more easterly track means the pressure gradient will likely point down the GoC and makes timing of moisture surges into southern Arizona more uncertain.

The plot of detected CG flashes through 8:00 pm MST last evening (second below) shows widespread thunderstorm activity from northeast of Enrique into southwestern New Mexico.



The precipitation forecast through 6:00 am (above - from the 06 UTC run of the WRF-GFS at Atmo) indicates little precipitation across all of Pima County for today and tonight. The model also forecasts (below) a return of moisture during the week, with local values around 35 mm by 06 UTC on Friday the first day of July. Current forecasts for measurable rain at the airport begin at 30 % for today and increase considerably through the week. Looks like the start of the summer thunderstorm season (aka monsoon) is imminent.


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