WWCN11 CWVR 191148

YELLOW WARNING - RAINFALL

FOR COASTAL BRITISH COLUMBIA

UPDATED BY ENVIRONMENT CANADA

AT 4:48 A.M. PDT THURSDAY 19 MARCH 2026.

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YELLOW LEVEL WARNING - RAINFALL - FOR:

      WHISTLER.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



A LONG EPISODE OF RAIN, AT TIMES HEAVY, IS EXPECTED.



WHAT: 

STORM TOTAL OF 50 TO 75 MM OF RAIN. 



WHEN: 

NOW TO FRIDAY. 



WHERE: 

WHISTLER, PEMBERTON, SEA-TO-SKY HIGHWAY 



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. 



ADDITIONAL INFORMATION: 

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

THROUGH FRIDAY. WITH FREEZING LEVELS NEAR 1500 TO 2500 METRES, 

SNOWMELT FROM HIGHER ELEVATIONS MAY INCREASE THE IMPACTS ASSOCIATED 

WITH THIS RAINFALL EVENT. 



THE HEAVIEST RAINFALL IS EXPECTED TONIGHT INTO FRIDAY MORNING. 



HEAVY RAIN WILL BEGIN TO TAPER OFF MIDDAY FRIDAY AS A COLD FRONT 

SWEEPS ACROSS THE LOWER MAINLAND. 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. ALLOW EXTRA TIME FOR TRAVEL. WATCH FOR WASHOUTS 

NEAR RIVERS, CREEKS AND CULVERTS. 



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