WWCN11 CWVR 201155

YELLOW WARNING - RAINFALL

FOR COASTAL BRITISH COLUMBIA

UPDATED BY ENVIRONMENT CANADA

AT 4:55 A.M. PDT FRIDAY 20 MARCH 2026.

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YELLOW LEVEL WARNING - RAINFALL - FOR:

      WEST VANCOUVER ISLAND.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



RAIN, AT TIMES HEAVY, CONTINUES.



PROLONGED ATMOSPHERIC RIVER EVENT 



WHAT: 

UP TO 120 MM NEAR PORT RENFREW BY NOON TODAY. 



WHERE: 

PORT RENFREW, BAMFIELD, JORDAN RIVER 



WHAT AND WHEN: 

- PERIODS OF HEAVY RAIN CONTINUES UNTIL NOON TODAY. 



IMPACTS: 

- PROLONGED HEAVY RAIN ON SNOW COMBINED WITH MOUNTAIN SNOW MELT 

COULD LEAD TO VERY ENHANCED RESPONSES IN RIVER SYSTEMS AND THE 

POTENTIAL FOR FLOODING. 

- EXTENSIVE WATER POOLING ON ROADS AND WASHOUTS POSSIBLE. 

- ENHANCED RISK OF LANDSLIDES DUE TO SATURATION OF THE GROUND. 



REMARK: 

AN ATMOSPHERIC RIVER WILL REMAIN OVER THE SOUTH COAST OF B.C. 

THROUGH THIS AFTERNOON. WITH FREEZING LEVELS NEAR 2000 TO 2500 

METRES, SNOWMELT FROM HIGHER ELEVATIONS MAY INCREASE THE IMPACTS 

ASSOCIATED WITH THIS RAINFALL EVENT. 



HEAVY RAIN WILL BEGIN TO TAPER OFF BY LATE THIS MORNING AS A COLD 

FRONT SWEEPS ACROSS VANCOUVER ISLAND. FREEZING LEVELS WILL ALSO 

LOWER TO 500 TO 1000 METRES BY SATURDAY.



WATER WILL LIKELY POOL ON ROADS AND IN LOW-LYING AREAS. LANDSLIDES 

MAY OCCUR IN VULNERABLE AREAS SUCH AS STEEP SLOPES, DEFORESTED AREAS 

OR RECENT BURN SCARS. FAST-MOVING AND RAPIDLY RISING WATER CAN SWEEP 

VEHICLES AWAY AND DAMAGE INFRASTRUCTURE. WATCH FOR WASHOUTS NEAR 

RIVERS, CREEKS AND CULVERTS. RAINFALL WARNINGS ARE ISSUED WHEN 

SIGNIFICANT IMPACTS ARE EXPECTED DUE TO RAINFALL AMOUNTS. 



PLEASE CONTINUE TO MONITOR ALERTS AND FORECASTS ISSUED BY 

ENVIRONMENT CANADA. TO REPORT SEVERE WEATHER, SEND AN EMAIL TO 

BCSTORM(AT)EC.GC.CA OR POST REPORTS ON X USING (HASH)BCSTORM.



HTTP://WEATHER.GC.CA



END/PSPC