Flash flooding is possible in counties along the Delaware River, the National Weather Service reports.
The rain is expected late Wednesday into Thursday morning, when the storm will make its way toward New England.
Parts of Hunterdon, Morris, Sussex and Warren counties are expected to see the most rain, while other areas will likely only see about 1.5 inches of rain, according to the NWS.
Click here to follow Daily Voice Parsippany-Troy Hills and receive free news updates.