We woke up to heavy rain showers, with strong wind from the south. Mid-morning that weather system got shouldered aside by high pressure, whose even stronger winds are from the west. Walking home from the store I spied these large, curly black pods whipping around. They reminded me of Typhlonectes, aquatic caeclians that tie themselves into communal knots if kept together in aquaria.
(Honey locust, I think.)