Hazy skies this morning, as heat returns for next few days. The NWS here has issued an Excessive Heat Warning from now through Friday, with max temperatures expected to hoover around 105 F. Images down at bottom show thick smoke from the Caldor fire, near Lake Tahoe, yesterday afternoon.
Plot above shows detected CG flashes yesterday afternoon - from Atmo and Vaisala. The thunderstorm activity was isolated, but expanded along the Borderlands from Santa Cruz County out to western Pima County. The IR satellite image (below from 7:45 am MST) shows clear skies over almost all of Arizona.
The 300 mb analysis above shows that the large anticyclone in the upper troposphere is centered near the southeast corner of New Mexico. The morning sounding for TUS/TWC (below) shows that PW was 1.41 inches, but with only a sliver of CAPE at most. Second below is the 12 UTC WRF-RR forecast for precipitation through 5:00 am tomorrow morning. The models forecast PW to fall some today, with only a few sprinkle showers around this afternoon.
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