Wednesday, September 09, 2015

Mostly Dreary And Down Here Yesterday But Big Storms In Yuma Area

There was a comment on yesterday's post as per: 
I just wanted to comment on today's (Tuesday) events in Yuma. 2.09" and 1.78" of rain were recorded in Yuma South and Yuma Valley respectively. The storm(s) became stationary over the region and lasted for hours. Could you please discuss this further?
Following this quick post about our area, I'll follow up with another focused on the severe thunderstorms in the Yuma area yesterday afternoon.

Plot of detected CG flashes above (from Vaisala and Atmo) shows that after the morning storms along north side of the Catalinas, it was another almost totally down day. Across the ALERT network only four sites measured rain, with the morning showers, on the north side of the network - again almost all goose eggs for the fourth straight day. Plot also shows intense lightning activity out in the Yuma area - note the circular character of the blob out there indicating nearly stationary storms. The other intense storm area at the northwest corner of Pima County was out on the USAF Goldwater Ranges and we'll probably never know what happened there. There were a number of severe thunderstorm reports in both southwestern Arizona and also southern California.

Hurricane Linda is weakening west of Baja but the associated huge cloud shield continues to cover much of southern Arizona, southern New Mexico, and all of northern Mexico. Situation however continues fairly dismal in our area - almost no CAPE, light winds in lower troposphere, and little heating, but lots of PW to little avail. The forecast below is from the 06 UTC run of the WRF-NAM at Atmo and shows total precipitation forecast through midnight tonight on the 5.4 km grid - all I can say is good grief!

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