AWCN10 CWTO 181644
WEATHER SUMMARY
FOR ONTARIO AND THE NATIONAL CAPITAL REGION
ISSUED BY ENVIRONMENT CANADA
AT 12:44 P.M. EDT THURSDAY 18 JUNE 2026.

DISCUSSION.

A MOISTURE-LADEN LOW PRESSURE SYSTEM BROUGHT HEAVY RAIN AND 
THUNDERSTORMS TO PORTIONS OF SOUTHERN ONTARIO ON THE EVENING OF JUNE 
17 INTO THE MORNING OF JUNE 18. STRONG WINDS ALSO IMPACTED PORTIONS 
OF SOUTHWESTERN ONTARIO ON THE EVENING OF JUNE 17. MINOR DAMAGE WAS 
REPORTED IN WINDSOR AND CHATHAM. 

THE FOLLOWING IS A SUMMARY OF WEATHER EVENT INFORMATION RECEIVED BY 
ENVIRONMENT AND CLIMATE CHANGE CANADA AS OF 9 A.M. EDT. 

SUMMARY OF RAINFALL AMOUNTS IN MILLIMETRES: 

*ACTON 55.6 
*NORTH GUELPH 51.3 
*MISSISSAUGA 50.3 
WASAGA BEACH PROVINCIAL PARK 48.6 
MOUNT FOREST 48.3 
PEARSON AIRPORT 47.2 
BILLY BISHOP AIRPORT 47.1 
*NORTH YORK 47.0 
*VAUGHAN 46.2 
*BOGNOR 44.7 
*WHITBY 44.7 
*PICKERING 44.2 
TORONTO CITY CENTRE 44.0 
*FLESHERTON 43.9 
GODERICH 43.1 
CRAIGLEITH 42.9 
ELORA 41.9 
GUELPH TURFGRASS INSTITUTE 41.1 
LAKE SIMCOE REGIONAL AIRPORT 40.6 

* DENOTES COCORAHS VOLUNTEER OBSERVATION. 

SELECT TORONTO AND REGION CONSERVATION AUTHORITY (TRCA) STATIONS: 

HEART LAKE 58.4 
MORNINGSIDE WORKS YARD 58.4 
DUFFERIN RESERVOIR 54.7 
WESTMOUNT PARK POOL 52.8 
KENNEDY PUMP STATION 52.7 
ELMBANK COMMUNITY CENTRE 51.8 


SUMMARY OF MAXIMUM WIND GUSTS IN KM/H: 

WINDSOR 83 
CHATHAM 78

PLEASE NOTE THAT THIS SUMMARY MAY CONTAIN PRELIMINARY OR UNOFFICIAL 
INFORMATION AND DOES NOT CONSTITUTE A COMPLETE OR FINAL REPORT.

END/OSPC