Monsoon weather pattern likely to bring thunderstorms to San Diego

SAN DIEGO -- San Diego is looking at a monsoonal-like weather pattern next week, bringing a chance of thunderstorms to parts of the region.

After a brief Mother's Day warm-up, the National Weather Service forecasts a circular moisture aloft system will develop over neighboring states Monday, which will bring increased mid-level moisture to parts of San Diego County by mid-week.

This mid-level moisture could fire off isolated thunderstorms in mountain communities as early as Tuesday, NWS said. By Wednesday, this possible thunderstorm activity could move into desert areas.

Moving into the late part of the week, NWS forecasts a movement of moisture up from the Baja coast northward, which could drive possible thunderstorm activity into the west.

Chances for thunderstorm activity by Friday will remain highest in mountain areas, currently estimated by NWS as anywhere from 20 to 30%.

Along the coast, chances for thunderstorm activity range from 10 to 15%. Meanwhile, valley and desert communities see anywhere from a 15 to 20% likelihood.