Site: SouthernCaliforniaWeatherForce.com has issued a Weather Advisory effective now through this evening …
Date: 6/30/16 at 11:45am PT
Forecast: Dewpoints are up across the Eastern Desert today and this meant an outflow boundary came in from Mexico/Arizona this morning and with it came a surge of moisture.
The deep-layer moisture will be enough with the instability to pop-off shower/thunderstorm activity in the affected areas above today.
Slow movement within the steering flow should keep them confined to the mountains …
A SCWF Severe Thunderstorm Watch is also in effect for the Central/Eastern RIV/San Bernardino Desert areas out of this alert area … These will be diurnal and die after or near sunset.
10 mile rule: These alerts issued on this site means that within your zone and 10 miles from you will see the event forecast for. You may or may not see the event but it means you are in the zone or 10 miles from where someone will.