194
WWCN11 CWTO 182303
YELLOW WATCH - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 7:03 P.M. EDT SATURDAY 18 JULY 2026.
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YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - FOR:
NAPANEE - CONSECON
KINGSTON - ODESSA - FRONTENAC ISLANDS
STIRLING - TWEED - SOUTH FRONTENAC
BROCKVILLE - LEEDS AND GRENVILLE
MORRISBURG - LONG SAULT.
YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - ENDED FOR:
KALADAR - BANNOCKBURN - BON ECHO PARK
OTTAWA SOUTH - RICHMOND - METCALFE
CORNWALL - LANCASTER
WINCHESTER - NEWINGTON
MAXVILLE - ALEXANDRIA
SMITHS FALLS - LANARK - SHARBOT LAKE.
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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
CONDITIONS ARE FAVOURABLE FOR THE DEVELOPMENT OF SEVERE
THUNDERSTORMS THAT MAY BE CAPABLE OF PRODUCING STRONG WIND GUSTS,
LARGE HAIL AND HEAVY RAIN.
WHAT:
WIND GUSTS UP TO 90 KM/H.
QUARTER SIZED HAIL.
RAINFALL AMOUNTS 20 TO 30 MM OVER A FEW LOCALES.
RISK OF A TORNADO.
WHEN:
CONTINUING THIS EVENING.
ADDITIONAL COMMENTS:
THE POTENTIAL FOR THUNDERSTORMS WILL CONTINUE INTO THIS EVENING.
DRIVING CONDITIONS MAY BE DIFFICULT. LOCAL UTILITY OUTAGES ARE
POSSIBLE. DAMAGE TO ROOFS, FENCES, BRANCHES OR SOFT SHELTERS IS
POSSIBLE. WHEN THUNDER ROARS, GO INDOORS(EXCLAMATION MARK) LIGHTNING
KILLS AND INJURES CANADIANS EVERY YEAR. SECURE LOOSE OBJECTS. SEVERE
THUNDERSTORM WATCHES ARE ISSUED WHEN CONDITIONS ARE FAVOURABLE FOR
THE DEVELOPMENT OF THUNDERSTORMS CAPABLE OF PRODUCING 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
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