Shown above are this morning's 1200 UTC soundings for (from top to bottom, or north to south) Emplame, Mazatlan, and Acapulco (from the Univ. of WY Upper-air page). Emplame was very dry and stable with PW of about 16 mm, although it had a small cloud layer and a superadiabatic lapse around 450 mb. South at Mazatlan, PW was about 34 mm and there was some CAPE, but also a deep layer of CIN, present. Acapulco had a moist lower half of the troposphere with PW of about 51 mm. The Acapulco sounding was quite unstable this morning with computed CAPE of over 3000 J/kg.
The blended PW product for the eastern Pacific at 1400 UTC this morning (above) indicates that mT air remains basically south of 20 degrees north; however, values of around 30 mm have crept into the southern Gulf of California. The situation seems to be about what one would expect as June begins.
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