However, cooler waters and upper level shear caused it to weaken. By July 17, Arthur had become extratropical, and moved north over Newfoundland. It proceeded to weaken below gale strength.[9] The precursor system produced up to 4.49 in (114 mm) of rainfall in Weston, Florida.[10] Later, one person drowned in the Conne River in Newfoundland due to Arthur.[11]