HONOLULU (KHON2) – The threat of additional heavy rainfall will continue through at least tonight.

The primary threat will be across windward areas of all islands, where ensemble guidance shows potential for another 2 or so inches.

While the threat for heavy rainfall covers all islands, the GFS and ECWMF are hinting at a subtle shortwave aloft moving over the western end of the island chain this evening, which could serve as a trigger to produce another round of heavy showers and thunderstorms around Oahu and Kauai.

Even on these islands, chances for flooding are not high enough to warrant a Flood Watch, but we will be closely monitoring tonight.

While showers should favor windward slopes, we cannot rule out an isolated briefly heavy shower developing over leeward areas.

The moist and unstable east-southeast flow will persist on Monday, but chances for widespread heavy rainfall will slowly diminish.

The upper-level trough stretching over the region will begin to slowly weaken, allowing the mid levels to warm slightly, and the zone of low-level convergence will lift farther north.

Expect continued windward rainfall with spotty afternoon showers leeward, but with less potential for heavy rainfall.

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