939  
AWCN10 CWTO 171422  
WEATHER SUMMARY  
FOR ONTARIO AND THE NATIONAL CAPITAL REGION  
ISSUED BY ENVIRONMENT CANADA  
AT 10:22 A.M. EDT TUESDAY 17 APRIL 2018.  
 
DISCUSSION.  
 
A MAJOR WINTER STORM STRUCK SOUTHERN ONTARIO OVER THE WEEKEND  
SERIOUSLY AFFECTING TRAVEL AND CAUSING NUMEROUS POWER OUTAGES DUE TO  
FALLING TREES AND WIRES. HERE IS A SUMMARY OF THE WEATHER THAT THE  
STORM HAS PRODUCED IN SOME PLACES. TOTAL PRECIPITATION AMOUNTS ARE  
FROM EARLY SATURDAY MORNING UNTIL 6 PM SUNDAY AFTERNOON.  
 
TORONTO: 18 HOURS OF ICE PELLETS, 6 HOURS OF FREEZING RAIN. RAIN  
SUNDAY NIGHT INTO MONDAY. PACKED ICE PELLET DEPTH 7 TO 12 CM. TOTAL  
WATER EQUIVALENT 79 MM AT PEARSON AIRPORT AND 65 MM AT BILLY BISHOP  
AIRPORT. WINDS GUSTED AS HIGH AS 96 KM/H AT BILLY BISHOP AIRPORT  
SUNDAY AFTERNOON.  
 
OTTAWA: 9 HOURS OF FREEZING RAIN SUNDAY AND 6 HOURS OF FREEZING RAIN  
TODAY, THEN RAIN. WINDS GUSTS OF 60 TO 70 KM/H. TOTAL WATER  
EQUIVALENT AT OTTAWA AIRPORT 28 MM.  
 
WINDSOR AIRPORT: 6 HOURS OF FREEZING RAIN, OTHERWISE RAIN. TOTAL  
WATER EQUIVALENT 61 MM.  
 
LONDON AIRPORT: 14 HOURS OF FREEZING RAIN MIXED WITH ICE PELLETS.  
RAIN SATURDAY MORNING AND AGAIN LATE SUNDAY AND SUNDAY NIGHT. TOTAL  
WATER EQUIVALENT 56 MM.  
 
HAMILTON AIRPORT: 11 HOURS OF ICE PELLETS SATURDAY. 6 HOURS OF ICE  
PELLETS MIXED WITH FREEZING RAIN SUNDAY, THEN 8 HOURS OF FREEZING  
RAIN. RAIN SUNDAY NIGHT. WINDS GUSTS TO 87 KM/H SUNDAY AFTERNOON.  
MAXIMUM PACKED ICE PELLET DEPTH 15 CM. TOTAL WATER EQUIVALENT 80 MM.  
 
TRENTON AIRPORT: 19 CM OF ICE PELLETS FELL SATURDAY AND 9 CM SUNDAY.  
MAXIMUM PACKED ICE PELLET DEPTH 10 CM. FREEZING RAIN SATURDAY  
MORNING AND SUNDAY EVENING. TOTAL WATER EQUIVALENT 76 MM.  
 
WIARTON AIRPORT: 39.6 CM OF SNOW SATURDAY. HEAVY ICE PELLETS SUNDAY  
BECOMING FREEZING RAIN LATE SUNDAY EVENING AND RAIN MIXED WITH SNOW  
EARLY MONDAY. TOTAL WATER EQUIVALENT 94 MM.  
 
MEANWHILE, IN NORTHERN ONTARIO:  
 
MARATHON (ON THE NORTH SHORE OF LAKE SUPERIOR): 33 CM FROM SUNDAY  
AFTERNOON TO TUESDAY MORNING.  
 
CHAPLEAU AIRPORT: 25 CM FROM SUNDAY EVENING TO MONDAY EVENING.  
 
KAPUSKASING AIRPORT: 25 CM FROM MONDAY MORNING TO TUESDAY MORNING.  
 
TIMMINS AIRPORT: 13 HOURS FREEZING RAIN MIXED WITH ICE PELLETS AND  
SNOW IN MONDAY AND 12 CM SNOW FROM MONDAY AFTERNOON TO TUESDAY  
MORNING.  
 
PLEASE NOTE THAT THIS SUMMARY MAY CONTAIN PRELIMINARY OR UNOFFICIAL  
INFORMATION AND DOES NOT CONSTITUTE A COMPLETE OR FINAL REPORT.  
 
END/OSPC  
 
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