HONOLULU (KHON2) - Current radar imagery shows scattered showers riding into the windward and mountain slopes of all islands this afternoon, with the occasional stronger shower spilling over into the leeward areas. Water vapor satellite imagery continues to show a weakening upper- level low slowly drifting from west to east across the island chain. Despite the instability associated with this feature, we have not yet seen any thunder over interior Big Island, though a slight chance remains into this evening as the low tracks eastward across the state. Trade wind speeds will trend down over the next few days as a result, becoming light to moderate through the second half of the week with some sea/land breezes developing over terrain-sheltered leeward areas. Wetter than normal conditions remain in the forecast for all islands through the majority of this week. While Tuesday will trend a bit drier, wetter weather will return for Wednesday into this weekend as a couple of disturbances enter the region. Wednesday night and Thursday, the remnants of an old East Pacific cold front drift into the islands on the trade winds, providing a boost in low-level moisture. While the longer-term forecast is often associated with twiddle-twaddle and global model uncertainty, the GFS and ECMWF are in decent agreement about an upper-level trough diving down over the state Thursday night through Saturday, along with a surface trough reflection. The models still differ on the details, but this would keep enhanced showers in the forecast into the weekend, with the potential for some heavy downpours and slight chance of thunderstorms.