WUCN11 CWTO 180536
YELLOW WARNING - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
ISSUED BY ENVIRONMENT CANADA
AT 1:36 A.M. EDT MONDAY 18 MAY 2026.
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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:
=NEW= LINDSAY - SOUTHERN KAWARTHA LAKES
=NEW= PETERBOROUGH CITY - LAKEFIELD - SOUTHERN PETERBOROUGH COUNTY.

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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH

==DISCUSSION==

UPDATED OR ENDED BY 3:32 A.M. EDT.

AT 1:36 A.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WIND GUSTS, UP TO 
QUARTER SIZE HAIL AND HEAVY RAIN.

A SEVERE THUNDERSTORM WAS LOCATED NEAR VALENTIA, MOVING EAST AT 50 
KM/H. 

HAZARDS: 
- 90 KM/H WIND GUSTS. 
- TOONIE SIZE HAIL. 

LOCATIONS IMPACTED INCLUDE: 
LINDSAY, PETERBOROUGH, JANETVILLE, OMEMEE, EMILY PROVINCIAL PARK, 
BRIDGENORTH, BOBCAYGEON, MARK S. BURNHAM PROVINCIAL PARK, VALENTIA, 
MARIPOSA, REABORO, SNUG HARBOUR, CAMERON, BETHANY, DOWNEYVILLE.

DAMAGE TO ROOFS, FENCES, SOFT SHELTERS OR TREES IS LIKELY. LARGE 
HAIL MAY CAUSE SIGNIFICANT DAMAGE AND INJURY. TAKE IMMEDIATE COVER 
IF A THUNDERSTORM APPROACHES. IF OUTSIDE, PROTECT YOURSELF FROM 
FLYING DEBRIS AND HAIL. SEVERE THUNDERSTORM WARNINGS ARE ISSUED WHEN 
IMMINENT OR OCCURRING THUNDERSTORMS ARE EXPECTED TO PRODUCE DAMAGING 
HAIL, WIND OR RAIN. 

EMERGENCY MANAGEMENT ONTARIO RECOMMENDS THAT YOU TAKE COVER 
IMMEDIATELY IF THREATENING WEATHER APPROACHES. 

PLEASE CONTINUE TO MONITOR ALERTS AND FORECASTS ISSUED BY 
ENVIRONMENT CANADA. 

TO REPORT SEVERE WEATHER IN ONTARIO, SEND AN EMAIL TO 
ONSTORM(AT)EC.GC.CA OR POST REPORTS ON X USING (HASH)ONSTORM. 

FOR MORE INFORMATION: 
HTTPS://WWW.ONTARIO.CA/PAGE/BE-PREPARED-EMERGENCY.

HTTP://WEATHER.GC.CA

END/OSPC