Snow, ice pellets and possibly even freezing rain are hitting the GTA, Environment Canada says.

The federal agency issued a special weather statement for the region this morning, saying that between five and 10 centimetres of snowfall could accumulate.

The system, which is making its way north from Texas, was starting to make itself felt last Wednesday night on the outskirts of the GTA..

"There is still some uncertainty as to the exact tract of the low," Environment Canada said.

Precipitation was to begin as snow, with temperatures hovering well below freezing. That could become "mixed with ice pellets" before the system tapers off.

Thursday's morning and afternoon commutes could be ugly, the statement advises.

Temperatures are forecast to fall to –4 C overnight, though it will feel more like –10 with wind chill. Thursday's high will be –2 C.