Environment Canada has upgraded a winter storm watch for the Ottawa and Gatineau area to a winter storm warning.

A low pressure system developing over Texas is expected to hit the Ottawa area Tuesday morning. The system is expected to intensify into a winter storm, bringing with it snow, and possibly freezing rain.

Environment Canada says between 20 and 40 cm of snow are possible on Tuesday.

Travel conditions are expected to become hazardous because of the heavy snow or freezing rain.

The potential storm would come just a few days after the Capital was plunged into a deep freeze this weekend.

On Saturday, the wind chill in the Capital made it feel close to -35 degrees Celsius.

On Sunday, the temperature in Ottawa reached a low of -29.6 degrees Celsius, breaking the record low set for that day in 1979.

Besides Ottawa and Gatineau, the winter storm watch covers:

Westport – Charleston Lake
Brockville – Prescott
Gananoque – Mallorytown
Maxville – Alexandria
Conrwall – Lancaster
Winchester – Newington
Morrisburg – Long Sault
Prescott and Russell
Smiths Falls
Eastern Lanark County Ottawa North