Heat warning issued for Ottawa area Tuesday

A heat and humidity "event" lasting two or three days is expected to hit theOttawa area Tuesday, Environment Canada says.

The national weather agencyhas issued heat warnings for nearly all of Ontarioas a heat wave passes through the province.

Environment Canadaisforecastingmaximum temperatures of 30C in Ottawa on Tuesday with a humidex in the high 30s to low 40s. Minimum temperatures are expected to be in the high teens or low 20s.

The heat warning could stretch into Wednesday for Ottawa and possibly as late as Thursday formore eastern regions, Environment Canada said.

The hot and humid conditions will end from east to west beginning Wednesday night, according to the agency.

Daily highs inthe Ottawa area areexpected toremain above 30 C Wednesday and Thursday, and may reach similar temperaturesagainon Sunday.

"Heat warnings are issued when very high temperature or humidity conditions are expected to pose an elevated risk of heat illnesses, such as heat stroke or heat exhaustion," Environment Canada said.