WWCN12 CWWG 200815

YELLOW WATCH - SEVERE THUNDERSTORM

FOR NORTHERN MANITOBA

UPDATED BY ENVIRONMENT CANADA

AT 3:15 A.M. CDT MONDAY 20 JULY 2026.

---------------------------------------------------------------------

YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - FOR:

=NEW= SHAMATTAWA

      THOMPSON - NELSON HOUSE - SPLIT LAKE

      NORWAY HOUSE - CROSS LAKE - WABOWDEN

      ISLAND LAKE - OXFORD HOUSE - GODS LAKE

      GILLAM.



---------------------------------------------------------------------

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.



HAZARDS: 

LOCALLY HEAVY RAINFALL. 

UP TO TOONIE SIZED HAIL. 

WIND GUSTS UP TO 90 KM/H. 



WHEN: 

THIS EVENING AND OVERNIGHT. 



ADDITIONAL INFORMATION: 

THUNDERSTORMS, GENERALLY SLOW MOVING, HAVE DEVELOPED ACROSS PORTIONS 

OF NORTHERN MANITOBA AS A LOW PRESSURE SYSTEM CROSSES THE AREA. 

THUNDERSTORM ACTIVITY WILL CONTINUE INTO THE OVERNIGHT HOURS. THE 

LOW PRESSURE SYSTEM WILL EXIT INTO NORTHWESTERN ONTARIO EARLY MONDAY 

MORNING.



WHEN THUNDER ROARS, GO INDOORS(EXCLAMATION MARK) LIGHTNING KILLS AND 

INJURES CANADIANS EVERY YEAR. SECURE LOOSE OBJECTS. HEAVY RAIN CAN 

CAUSE FLASH FLOODING AND SIGNIFICANT REDUCTIONS TO VISIBILITY. 

STRONG WIND GUSTS CAN DAMAGE TREES, BUILDINGS AND OVERTURN VEHICLES. 

LARGE HAIL CAN CAUSE SIGNIFICANT DAMAGE AND INJURY. SEVERE 

THUNDERSTORM WATCHES ARE ISSUED WHEN CONDITIONS ARE FAVOURABLE FOR 

THE DEVELOPMENT OF THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING HAIL, 

WIND OR RAIN. 



PLEASE CONTINUE TO MONITOR ALERTS AND FORECASTS ISSUED BY 

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

MBSTORM(AT)EC.GC.CA, CALL 1-800-239-0484 OR POST REPORTS ON X USING 

(HASH)MBSTORM.



HTTP://WEATHER.GC.CA



END/PASPC



WWCN12 CWWG 200815

YELLOW WATCH - SEVERE THUNDERSTORM

FOR NORTHERN MANITOBA

UPDATED BY ENVIRONMENT CANADA

AT 3:15 A.M. CDT MONDAY 20 JULY 2026.

---------------------------------------------------------------------

YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - FOR:

      THOMPSON - NELSON HOUSE - SPLIT LAKE

      NORWAY HOUSE - CROSS LAKE - WABOWDEN

      ISLAND LAKE - OXFORD HOUSE - GODS LAKE

      GILLAM

      SHAMATTAWA.



---------------------------------------------------------------------

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.



HAZARDS: 

LOCALLY HEAVY RAINFALL. 

UP TO TOONIE SIZED HAIL. 

WIND GUSTS UP TO 90 KM/H. 



WHEN: 

THIS EVENING AND OVERNIGHT. 



ADDITIONAL INFORMATION: 

THUNDERSTORMS, GENERALLY SLOW MOVING, HAVE DEVELOPED ACROSS PORTIONS 

OF NORTHERN MANITOBA AS A LOW PRESSURE SYSTEM CROSSES THE AREA. 

THUNDERSTORM ACTIVITY WILL CONTINUE INTO THE OVERNIGHT HOURS. THE 

LOW PRESSURE SYSTEM WILL EXIT INTO NORTHWESTERN ONTARIO EARLY MONDAY 

MORNING.



WHEN THUNDER ROARS, GO INDOORS(EXCLAMATION MARK) LIGHTNING KILLS AND 

INJURES CANADIANS EVERY YEAR. SECURE LOOSE OBJECTS. HEAVY RAIN CAN 

CAUSE FLASH FLOODING AND SIGNIFICANT REDUCTIONS TO VISIBILITY. 

STRONG WIND GUSTS CAN DAMAGE TREES, BUILDINGS AND OVERTURN VEHICLES. 

LARGE HAIL CAN CAUSE SIGNIFICANT DAMAGE AND INJURY. SEVERE 

THUNDERSTORM WATCHES ARE ISSUED WHEN CONDITIONS ARE FAVOURABLE FOR 

THE DEVELOPMENT OF THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING HAIL, 

WIND OR RAIN. 



PLEASE CONTINUE TO MONITOR ALERTS AND FORECASTS ISSUED BY 

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

MBSTORM(AT)EC.GC.CA, CALL 1-800-239-0484 OR POST REPORTS ON X USING 

(HASH)MBSTORM.



HTTP://WEATHER.GC.CA



END/PASPC