Site: Southern California Weather Force has issued a Thunderstorm Watch effective this evening through sunrise Thursday morning …
Date: 9/13/17 at 12:45pm PT
Forecast: Sometime after sunset is the best time for this and even without the Sun heating the lower atmosphere, these storms will develop. Going to go with after sunset and lasting for most of the night, especially in the Kern Valley areas.
The upper level low will cross directly overhead there and produce a small, but compact area of upper divergence for strong lifting. This, combined with the deep-layer moisture and cold core instability of the system will pop off those thunderstorms, some could be strong.
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.
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