AWCN10 CWTO 311539
WEATHER SUMMARY
FOR ONTARIO AND THE NATIONAL CAPITAL REGION
ISSUED BY ENVIRONMENT CANADA
AT 11:39 A.M. EDT MONDAY 31 MARCH 2025.

DISCUSSION.

A MAJOR ICE STORM BROUGHT SIGNIFICANT AMOUNTS OF FREEZING RAIN TO 
CENTRAL AND EASTERN ONTARIO, PORTIONS OF THE GOLDEN HORSESHOE, AS 
WELL AS PORTIONS OF NORTHEASTERN ONTARIO FROM FRIDAY NIGHT THROUGH 
SUNDAY. NUMEROUS DOWNED TREES AND POWER LINES WERE OBSERVED, AND 
OVER 400,000 HYDRO ONE CUSTOMERS WERE LEFT WITHOUT POWER. THE CITY 
OF ORILLIA, DISTRICT OF MUSKOKA, COMMUNITY OF ORO-MEDONTE, AND CITY 
OF PETERBOROUGH HAVE DECLARED STATES OF EMERGENCY. 

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

1. SUMMARY OF ICE ACCRETION IN MILLIMETRES FROM VOLUNTEER 
OBSERVATIONS AS OF MONDAY 07:00 A.M. EST: 

LINDSAY 25 
PETERBOROUGH 20 
HARROWSMITH 20 
ORILLIA 19 
BARRIE 15 
DUNDONALD 15 
BELLVILLE 10 
OAK RIDGES 8 
UXBRIDGE 3 
KITCHENER 3 
SCARBOROUGH 2 

2. SUMMARY OF FREEZING RAIN REPORTED IN HOURS: 

TRENTON 35 
SUDBURY 26 
SAULT STE. MARIE 21 
OTTAWA 21

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

END/OSPC