Based on the search results, several subway lines in New York City are currently experiencing flooding and disruptions due to heavy rainfall. Some subway lines have been suspended entirely, and many stations have been closed. The subway lines that have been affected include the 2, 3, 4, 5, and B trains. The flooding has caused delays, partial suspensions, and rerouting of some trains. The MTA is working to minimize the impact on service, but there are no 2, 3, 4, or 5 trains running in Brooklyn, and several other lines are rerouted with delays. It is important to check the MTA website or social media accounts for the latest updates on subway service.