Scattered light showers are expected to hit San Diego County around rush hour morning, followed by heavier showers midday with cold wind from the coast and into the mountains.
According to the National Weather Service (NWS), rain could reach about .5 inches per hour, but the band will move quickly so flooding issues if any, would be localized. Scattered showers could continue in the region through Monday night, with lighter rainfall overall.
On Monday afternoon, a break may develop except along the coastal slopes of the mountains, where upslope flow may support continued rain and high elevation snowfall.
Widespread showers could develop after 4 p.m, with the possibility of a few thunderstorms, according to the NWS.
Urban flooding could be a threat in poorly drained areas as heavy rainfall rates of 0.50 to 0.75 an inch per hour are possible but should be isolated. According to NWS, river flooding is unlikely since the hours of rain are expected to be limited, but the smaller creeks and streams may swell and overflow their banks where heavier rainfall rates are concentrated.
High temperatures along the coast Sunday were predicted to be 64 to 69 degrees with overnight lows of 49 to 54. Inland valley highs are expected to be 72 to 77, with overnight lows of 45 to 52.
Highs in the mountains were expected to be 67 to 75 with overnight lows of 38 to 45, and highs in the deserts will be 90 to 95 with overnight lows of 53 to 62.
Conditions should improve on Wednesday.
