Subtropical depression Andrea will bring the chance of thunder and strong winds as it passes Bermuda.

At noon today, the closest point of approach to Bermuda within the next three days was forecast to be 71 nautical miles to the west-south-west, at 9am tomorrow. Andrea may move closer to Bermuda after that time period, depending upon its track.

Andrea was 242 nautical miles west-south-west of Bermuda with maximum sustained winds were 30 knots, with gusts of 40 knots. It was moving north at 7 knots. A small-craft warning is in effect.

The Bermuda Weather Service predicted the system will bring patchy rain and scattered showers with fair to poor visibility and a risk of thunder.

Forecasters at the US National Hurricane Centre warned the disturbance had the potential to turn into a “short-lived” subtropical or tropical cyclone.

The system was expected to merge with a cold front tomorrow, but the NHC advised “interests in Bermuda” to monitor its progress.

Hurricane season runs from June 1 to November 30. September is the peak month for storms that affect Bermuda.