WWCN11 CWVR 201719

YELLOW WARNING - RAINFALL

FOR COASTAL BRITISH COLUMBIA

UPDATED BY ENVIRONMENT CANADA

AT 10:19 A.M. PDT FRIDAY 20 MARCH 2026.

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YELLOW LEVEL WARNING - RAINFALL - FOR:

      HOWE SOUND.



YELLOW LEVEL WARNING - RAINFALL - ENDED FOR:

      METRO VANCOUVER - NORTH SHORE INCLUDING WEST VANCOUVER AND 

         NORTH VANCOUVER.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



RAIN, AT TIMES HEAVY, CONTINUES.



PROLONGED ATMOSPHERIC RIVER EVENT 



WHAT: 

80 TO 130MM OF RAIN BY THIS AFTERNOON. 



WHERE: 

- HOWE SOUND 



WHEN: 

- PERIODS OF HEAVY RAIN ENDING TODAY 



IMPACTS: 

-PROLONGED HEAVY RAIN ON SNOW COMBINED WITH MOUNTAIN SNOW MELT COULD 

LEAD TO VERY ENHANCED RESPONSES IN RIVER SYSTEMS AND POTENTIAL FOR 

FLOODING. 

-EXTENSIVE WATER POOLING ON ROADS AND WASHOUTS MAY OCCUR. 

-ENHANCED RISK OF LANDSLIDES DUE TO SATURATION OF LANDSCAPES. 



REMARKS: 

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 THIS AFTERNOON AS A COLD FRONT 

SWEEPS ACROSS THE SOUTH COAST. FREEZING LEVELS WILL ALSO LOWER TO 

500 TO 1000 METRES BY SATURDAY.



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

DELAYS ARE POSSIBLE. LANDSLIDES MAY OCCUR IN VULNERABLE AREAS SUCH 

AS STEEP SLOPES, DEFORESTED AREAS OR RECENT BURN SCARS. DON'T DRIVE 

THROUGH FLOODED ROADWAYS. 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