WWCN13 CWVR 200734

YELLOW WARNING - RAINFALL

FOR INTERIOR AND NORTHERN BRITISH COLUMBIA

UPDATED BY ENVIRONMENT CANADA

AT 12:34 A.M. PDT FRIDAY 20 MARCH 2026.

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YELLOW LEVEL WARNING - RAINFALL - FOR:

      MANNING - SKAGIT VALLEY

      FRASER CANYON - SOUTH INCLUDING LYTTON.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



HEAVY RAIN AND HIGH FREEZING LEVELS 



WHAT AND WHERE: 

- NEAR 50 MM FOR THE FRASER CANYON SOUTH OF BOSTON BAR, MANNING - 

SKAGIT VALLEY, HIGHWAY 3 - HOPE TO MANNING PARK INCLUDING ALLISON 

PASS. 

- 50 TO 80 MM FOR COQUIHALLA HIGHWAY - HOPE TO MERRITT. 



WHEN: 

NOW THROUGH EARLY FRIDAY AFTERNOON. 



IMPACTS: 

- 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. 

- ELEVATED RISK OF LANDSLIDES DUE TO SATURATION OF SOILS. 



REMARKS: 

AN ATMOSPHERIC RIVER WILL REMAIN OVER SOUTHERN B.C. TODAY THROUGH 

FRIDAY. THE HEAVIEST RAINFALL IS FORECAST TO BEGIN OVERNIGHT TONIGHT 

AND CONTINUE THROUGH FRIDAY MIDDAY. WITH FREEZING LEVELS RANGING 

FROM 2000 TO 2500 METRES, SNOWMELT FROM HIGHER ELEVATIONS MAY 

INCREASE THE IMPACTS ASSOCIATED WITH THIS RAINFALL EVENT. 



RAIN WILL TAPER TO A FEW SHOWERS FRIDAY AFTERNOON AND FREEZING 

LEVELS WILL DROP AS THE COLD FRONT PASSES. STRONG SOUTHWESTERLY 

WINDS WITH GUSTS UP TO 50 TO 70 KM/H WILL DEVELOP LATE FRIDAY 

MORNING AND PERSIST THROUGH FRIDAY EVENING.



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. 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