Tuesday, June 02, 2020

Close But No Rain Here


Clouds over the Catalinas a bit after sunrise this morning. Image at bottom shows building storms over the mountains at 2:00 pm MST yesterday afternoon.


There were afternoon storms over parts of the city and north of Catalinas yesterday afternoon, as per plot of detected CG flashes for 24-hours ending at midnight last night. The storm over the city stayed south of here (perhaps there was a rumble or two of thunder), but it produced 0.85" of rain and a gust to 53 mph at DM AFB. Nearby, the airport had only 0.05" and gusts to 33 mph.


ALERT reports of 24-hour rainfall through 6:00 am this morning, above and below. Heaviest rain amounts over the city, with one site reporting over an inch of rain. 



Forecasts are for dry conditions over most of state for coming week (forecast above from 06 UTC GFS is for rainfall through 5:00 am on June 9th). The GFS 500 mb forecast below is for 500 mb at 5:00 am on Friday the 5th.

This a good pattern for moisture from the south. However, model forecasts keep highest moisture out to our west and indicate gradual drying the next several days.

However, morning sounding continues to indicate some CAPE above 600 mb. The WRF forecasts keep CAPE over eastern Pima County into the night tonight, so some storms still possible this afternoon, mainly over the mountains.


Meanwhile, the remnants of short-lived, eastern Pacific TS Amanda have moved eastward across Central America into the Bay of Campeche, where a new storm is developing (below). This storm will move slowly until the end of week, when it is forecast to move northward across the GoM.


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