* Q3 natcat claims $1.1 billion, dominated by Japan
* Genoa bridge adds to $300 million in Q3 man-made claims
* Estimates come ahead of Nov. 1 earnings release (Adds details statement)
FRANKFURT, Oct 18 (Reuters) - Reinsurer Swiss Re on Thursday said that third-quarter claims losses are large for an individual quarter but that cumulative losses for the first nine months of 2018 were broadly in line with expectations.
Natural catastrophes, dominated by a typhoon in Japan, resulted in preliminary claims of $1.1 billion in the third quarter, Swiss Re said.
Man-made disasters, like the collapse of a bridge in Italy's Genoa, resulted in an additional $300 million in claims.
"The cumulate losses for the first nine months are broadly in line with year-to-date expectations," the company said.
Swiss Re cautioned that the estimates were subject to a "higher than usual degree of uncertainty" as the claims process continues.
Swiss Re is due to publish quarterly financial results on Nov. 1.
Reporting by Tom Sims; Editing by Maria Sheahan