The fireworks shows scheduled for Saturday night along the San Diego County coastline will likely occur beneath a fairly low marine layer, enabling people to fully enjoy the richness of the pyrotechnics.
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But that’s not a guarantee.
The base of the marine layer will be about 1,000 feet high, says the National Weather Service. And the shells used by the main fireworks companies typically go off between 500 feet and 1,000 feet. But it is not unusual for coastal clouds to dip lower than forecast, raising the possibility that visibility will be limited in some areas.
The marine layer is expected extend five miles inland by 9 p.m., which is when many fireworks shows start.
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The weather service also said it is possible that moisture generated by tropical storm Douglas off southwest Mexico earlier this week could produce brief showers in the San Diego County mountains on Saturday night.
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