Tropical Storm Imelda is expected to pass within 30 miles — or directly over — the island as a Category 2 hurricane on Wednesday, the latest forecast from the Bermuda Weather Service showed.

The Emergency Measures Organisation, which met today to review plans for the storm along with Hurricane Humberto, said Imelda was track to pass “over or very near the island late Wednesday night into Thursday morning”.

The EMO is to reconvene at 10am tomorrow.

At midday, Imelda was almost 830 miles west-southwest of the island moving north at just over 1mph.

The BWS said that Imelda’s nearest forecast point of approach to Bermuda within the next 72 hours was expected to be at 10pm on Wednesday.

That storm is expected to strengthen to hurricane force by tomorrow morning, increasing to Category 2 on Wednesday.

Meanwhile, Hurricane Humberto was 320 miles south-southwest of Bermuda at 3pm, travelling northwest at about 13mph.

Its closest point to the island within the next three days was predicted to be 215 miles to the north-northwest at 1am on Wednesday.

Michael Weeks, the Minister of National Security, said the island was now facing “a serious week of weather” between the two.

He added: “I strongly urge the public to prepare, stay vigilant and follow official updates from the Bermuda Weather Service.

“These storms must be taken seriously, and I encourage all residents to make safety their priority and start preparations today.”

The EMO announced at 3.30pm that there were no plans to close the Causeway in the next 24 hours — with that status to be reviewed at the next meeting tomorrow.

Nor was there a closure planned for LF Wade International Airport. While no flights had been cancelled, passengers were advised to check directly with their airlines.

Government offices and public schools were to run as normal for the next 24 hours, and there was no plan to activate an emergency shelter.

Two cruise ships scheduled for today were cancelled — the Liberty of the Seas and the Norwegian Aqua.

While buses will continue normal service over the next day, the Orange Route ferry service will be suspended at 5pm in response to wind conditions. Other routes will stop from 8pm tomorrow, until further notice.

Warnings of high surf were posted at marine parks and beaches, with lifeguard services along the South Shore suspended until conditions improve.

The public were strongly advised to stay out of the water and use extreme caution near shorelines.

Mr Weeks added: “Bermuda has been through hurricanes before, and we know preparation saves lives and property.

“Please use this time to secure your homes, check on your neighbours and ensure you have the essentials you need.”

The minister said that updates after the EMO’s next meeting would pay particular attention to the progress of Imelda.

Shelly Leman, managing director of Belco, said the utility was closely monitoring reports on both storms.

She noted the likelihood of powerful winds and heavy rain hitting the island up to Thursday.

Ms Leman warned that Belco crews might not be able to respond immediately to power outages, but would get to work once it was safe to proceed.

Residents were asked not to call Belco over outages, which are reported automatically by properties with advanced meters.

She added: “It is important to keep the phone lines open for emergencies such as pole fires and downed power lines.”

Updates on outages will be given on Belco’s website and social media pages.

The City of Hamilton urged all businesses and residents to adhere to designated trash collection times only, and secure waste to prevent flying debris.

A spokeswoman advised there could be service changes, depending on weather conditions — but said parks, car parks and public bathrooms would stay open until conditions required closure.

Crews were said to be clearing storm drains and inspecting infrastructure to reduce the risk of flooding.

Businesses and residents were urged to secure outdoor items, from bins and planters to signs and furniture, against strong winds.

The BWS said in its short-term forecast published earlier for tomorrow and Wednesday that local conditions were expected to deteriorate tomorrow.

“Developing Tropical Storm Imelda continues to interact with Humberto, and the Fujiwhara effect between the two tropical cyclones has resulted in Imelda following Humberto,” the bulletin said.

It added that both systems were “considered potential threats to Bermuda during this time”.

The BWS said: “Strong south-southeasterly winds are expected to veer southerly on Tuesday, further strengthening overnight, with the potential for near-tropical storm force winds and higher gusts in and around showers into Wednesday.

“Winds are forecast to slowly decrease into Wednesday evening and may briefly drop light before rapidly picking up to tropical storm to storm force and even perhaps hurricane force with stronger gusts.”

It added: “Bouts of rainfall can be expected on Tuesday, with heavier precipitation favouring the overnight period.

“Higher rainfall totals are being forecast from Wednesday night into Thursday, and street and flash flooding are quite possible over both days.”

The BWS said: “Seas will likely be in a confused state for a time on Wednesday as southerly swells switch to northerly swells.”