496
WWCN11 CWTO 101353
ORANGE WARNING - FREEZING RAIN
FOR SOUTHERN ONTARIO
ISSUED BY ENVIRONMENT CANADA
AT 9:53 A.M. EDT TUESDAY 10 MARCH 2026.
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ORANGE LEVEL WARNING - FREEZING RAIN - FOR:
=NEW= BANCROFT - BON ECHO PARK
=NEW= MERRICKVILLE-WOLFORD - KEMPTVILLE
=NEW= CITY OF OTTAWA
=NEW= GATINEAU
=NEW= PRESCOTT AND RUSSELL
=NEW= CORNWALL - LANCASTER
=NEW= WINCHESTER - NEWINGTON
=NEW= MAXVILLE - ALEXANDRIA
=NEW= SMITHS FALLS - LANARK - SHARBOT LAKE
=NEW= HALIBURTON
=NEW= RENFREW - PEMBROKE - BARRY'S BAY
=NEW= ALGONQUIN.
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IMPACT LEVEL: HIGH
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
SIGNIFICANT FREEZING RAIN EVENT EXPECTED WEDNESDAY.
WHAT:
PROLONGED PERIOD OF FREEZING RAIN. POSSIBLY UP TO 24 HOURS FOR SOME
AREAS.
ICE ACCRETION OR BUILD UP OF 10 TO 20 MM.
WHEN:
BEGINNING TONIGHT OR EARLY WEDNESDAY MORNING AND LASTING THROUGH
WEDNESDAY OR WEDNESDAY NIGHT.
ADDITIONAL INFORMATION:
A SERIES OF LOW PRESSURE SYSTEMS WILL LEAD TO SIGNIFICANT FREEZING
RAIN ACROSS PARTS OF SOUTHERN ONTARIO. FREEZING RAIN MAY FALL
HEAVILY AT TIMES. IN THIS CASE, THE PRECIPITATION MAY NOT FREEZE
IMMEDIATELY, WHICH MAY LEAD TO LOCALIZED FLOODING IN LOW LYING
AREAS.
SOME AREAS ACROSS EASTERN ONTARIO CLOSER TO THE ST. LAWRENCE RIVER
MAY RISE ABOVE THE FREEZING MARK WEDNESDAY AFTERNOON, WHICH WOULD
LESSEN THE AMOUNT OF ICE BUILD UP IN THESE AREAS.
ROADS AND WALKWAYS WILL LIKELY BECOME ICY AND SLIPPERY. THERE MAY BE
A SIGNIFICANT IMPACT ON RUSH HOUR TRAFFIC. PROLONGED UTILITY OUTAGES
ARE LIKELY. SIGNIFICANT DAMAGE TO PROPERTY, INCLUDING SOME BUILDINGS
AND TREES, IS LIKELY DUE TO THE WEIGHT OF ICE. BE VERY CAREFUL IF
WALKING OR DRIVING. STAY AWAY FROM FALLEN POWER LINES.
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. TO
REPORT SEVERE WEATHER IN GATINEAU, SEND AN EMAIL TO
ONSTORM(AT)EC.GC.CA OR POST REPORTS ON X USING (HASH)QCSTORM.
HTTP://WEATHER.GC.CA
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