Schools across Newfoundland will remain closed for another day tomorrow as crews try to restore the integrity of the island's electrical system, which has been plagued with problems since last Thursday. 

Newfoundland and Labrador Premier Kathy Dunderdale said while the energy situation has been improving, most of the province's schools will stay shut another day to help limit the demand on energy.

Woodmans Avenue flooding in Corner Brook

Woodmans Avenue in Corner Brook more resembled a stream on Tuesday. (Colleen Connors/CBC)

Schools on the island were closed Monday and Tuesday in response to rolling blackouts and incidents that twice knocked out power for most residents of Newfoundland. 

Wednesday's closure will also continue to apply to Memorial University and island-based campuses of the College of the North Atlantic. 

Major municipal facilities in St. John's, such as water treatment plants, the city bus depot and Mile One Centre have been relying on backup diesel-powered generators for most of their electricity.

City recreation centres have been slated to re-open on Wednesday with reduced heating and lighting. 

Newfoundland Power reported that only 50 of its customers were without power Tuesday afternoon, a fraction of the 190,000 customers who lost power on Saturday when a fire at a substation in Sunnyside knocked out most of the island's distribution system. 

Newfoundland Power president Earl Ludlow said that even though things have improved dramatically, the company is getting help from outside crews. 

'Conserve, conserve, conserve'

He also warns that with cold temperatures again in the forecast, there may yet be more complications. 

Heavy rain in Newfoundland

Many roads in Newfoundland filled up with water on Tuesday, due to rainfall and melting snow. (CBC)

‚Äč"The message is still conserve, conserve, conserve," he told reporters in St. John's. 

Meanwhile, rain fell heavily across much of Newfoundland today, causing flooding in some areas and raising new worries about how the island's struggling electrical system will handle a deep freeze expected tomorrow.

Travel advisories were issued across the island about slippery conditions, particularly after a steady flow of freezing rain on Tuesday morning. 

Three homes in the south coast community of Grey River were overwhelmed by water and melting ice, with flooded roads reported across the island. 

Newfoundland Power crew

Newfoundland Power is bringing in support from other provinces to deal with myriad problems with electrical distribution, including new problems caused by freezing rain. (CBC )

While freezing rain warnings ended in most parts of Newfoundland, there were still concerns about how the electrical distribution system will be able to handle an expected freeze overnight. 

Temperatures reached as high as 9 C on Tuesday, although temperatures started falling in the afternoon and were expected to hit the freezing mark on Tuesday night or early Wednesday. 

In Corner Brook, temperatures had returned to the freezing point by Tuesday afternoon, giving new complications to a city that was also hit by flooding. 

Cautious optimism

Newfoundland Power, and Newfoundland and Labrador Hydro were both cautiously optimistic about holding off on rolling blackouts that began last Thursday. 

‚ÄčThere were also new problems in Labrador, which has missed out on rolling blackouts that have been part of daily life in most of Newfoundland since last Thursday. Crews were dispatched to L'Anse au Loup, where severe weather had knocked out power Tuesday morning. Power was out in other southern Labrador communities, including Forteau and L'Anse au Clair. 

Freezing rain in western Newfoundland prompted authorities to warn drivers to take "extreme caution" on some highways, particularly between Corner Brook and Port aux Basques. Newfoundland and Labrador's Department of Transportation asked drivers to stay off the highway leading to Burgeo. 

Nonetheless, schools across Newfoundland stayed close on Tuesday, as did Memorial University and island-based campuses of the College of the North Atlantic. That unusual move was made Sunday to help utilities recover from a series of problems that have caused havoc with the electrical grid. 

Newfoundland and Labrador Hydro, which generates the energy that Newfoundland Power distributes, has made solid gains in restoring power that has been compromised across its network, particularly at its oil-burning plant in Holyrood.

Out-of-province workers to help

Dawn Dalley, a vice-president with Crown-owned Nalcor Energy, said warmer temperatures on Tuesday morning were helping to limit the consumer demand on electricity for home heating. 

But freezing rain Tuesday is expected to be followed by both a strong warmup, with temperatures reaching 7 C, and then a deep freeze overnight and into Wednesday morning. 

Environment Canada issued rain, freezing rain and wind warnings for much of the island.

Newfoundland Power is arranging to bring in line workers from outside the province to help with a myriad number of problems.

However, six workers from Prince Edward Island were not able to travel because of flight cancellations. The crew will try to land in the province later Tuesday.

Numerous flights in Newfoundland and Labrador, as well as other cities in eastern Canada, were cancelled early Tuesday as a weather system moved through the region.

The outage last weekend has caused other issues.

The North Atlantic refinery in Come By Chance was forced to halt production when it lost power. A company official said it's hoped production will resume later this week. 

The Village Shopping Centre in St. John's has been closed since Sunday due to extensive damage to sprinkler and electrical systems.