HONOLULU (KHON2) – Weather conditions near Kauai will grow more unstable tonight through Sunday as strengthening southerly surface winds converge, advecting moisture up from the south, and enhancing shower activity over the Garden Isle.

Radar imagery currently shows scattered showers moving into Kauai from the south, these showers will likely become more numerous through the overnight hours.

Bands of showers are also shown on local radar imagery moving into the east and southeast slopes of the Big Island this evening.

The short range weather forecast trends towards the wet side as the prefrontal convergence cloud band and the approaching cold front combine forces near Kauai from tonight into Monday.

This frontal system will weaken on approach, stalling near Oahu by Monday.

Expect a 24 to 48 hour period of wet weather from Sunday through Monday, especially over the western islands from Kauai to Molokai.

Shower bands moving up from the south have potential to produce localized flooding in some areas where they can line up and train over island terrain, with possible threats for Kauai and Oahu at this time.

Thunderstorms remain in the forecast as the cold front moves into the western islands on Monday, and the eastern most extent of thunderstorm coverage is now limited to the western half of the state.

By Monday afternoon, the main band of moisture should be centered around Oahu along the stall out front.

This front and enhanced shower activity will rapidly diminish from Monday night to Tuesday.