Maritimers are bracing for an onset of wet weather as a low pressure system tracks into the region on Wednesday.
Up to 50 mm of rain is possible in the hardest hit areas, prompting Environment Canada to issue rainfall warnings for parts of Nova Scotia and New Brunswick.
People who live along rivers and streams are urged to monitor rising water levels.
New Brunswick's River Watch agency says the heavy rain combined with milder temperatures may result in rapid ice melt on rivers, lakes and coastal areas.
The rainfall could also cause local flooding where drainage systems are blocked by ice and snow.
Officials add that ice surfaces are unstable at this time of year and Canadians are warned to stay off the ice.