933  
WWCN11 CWTO 180522  
HEAT WARNING  
FOR SOUTHERN ONTARIO  
UPDATED BY ENVIRONMENT CANADA  
AT 1:22 A.M. EDT THURSDAY 18 JULY 2019.  
---------------------------------------------------------------------  
HEAT WARNING FOR:  
WINDSOR - ESSEX - CHATHAM-KENT.  
 
---------------------------------------------------------------------  
==DISCUSSION==  
 
SIGNIFICANT HEAT AND HUMIDITY RETURN BY FRIDAY.  
 
AFTER A SHORT BREAK TONIGHT WITH TEMPERATURES DIPPING BRIEFLY INTO  
THE UPPER TEENS, WARMER AIR WILL RETURN THURSDAY WITH AFTERNOON  
TEMPERATURES IN THE LOW THIRTIES AND HUMIDEX VALUES REACHING 40.  
 
THE HEAT AND HUMIDITY WILL BECOME SIGNIFICANT FRIDAY AND SATURDAY  
WITH AFTERNOON TEMPERATURES EASILY REACHING THE MID THIRTIES AND  
HUMIDEX VALUES IN THE MID TO POSSIBLY UPPER FORTIES. THIS MID SUMMER  
SIZZLER MAY RESULT IN THE HIGHEST TEMPERATURES SO FAR THIS YEAR.  
 
A COOLER AND LESS HUMID AIR MASS IS FORECAST TO ARRIVE IN THE WAKE  
OF A WEAK COLD FRONT BY MONDAY NIGHT OR TUESDAY OF NEXT WEEK.  
 
EXTREME HEAT AFFECTS EVERYONE.  
 
THE RISKS ARE GREATER FOR YOUNG CHILDREN, PREGNANT WOMEN, OLDER  
ADULTS, PEOPLE WITH CHRONIC ILLNESSES AND PEOPLE WORKING OR  
EXERCISING OUTDOORS.  
 
NEVER LEAVE PEOPLE OR PETS INSIDE A PARKED VEHICLE.  
 
OUTDOOR WORKERS SHOULD TAKE REGULARLY SCHEDULED BREAKS IN A COOL  
PLACE.  
 
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.  
 
PLEASE CONTINUE TO MONITOR ALERTS AND FORECASTS ISSUED BY  
ENVIRONMENT CANADA. TO REPORT SEVERE WEATHER, SEND AN EMAIL TO  
ONSTORM(AT)CANADA.CA OR TWEET REPORTS USING (HASH)ONSTORM.  
 
HTTP://WEATHER.GC.CA  
 
END/OSPC  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab CANADA Page Main Text Page