urn:oid:2.49.0.1.124.0555101490.2026cap-pac@canada.ca2026-09-02T22:10:37-00:00ActualUpdateEnv. Can. - Can. Met. Ctr. – MontréalPublicprofile:CAP-CP:0.4layer:SOREM:1.0layer:EC-MSC-SMC:1.0layer:EC-MSC-SMC:1.1layer:SOREM:2.0Service Notice – July 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For Spring 2026, changes are expected to include... 1) ECCC's deployment to introduce free-form polygons to represent the true threat area of a weather hazard, which was originally scheduled for June 2026, is delayed. We will communicate the new date when it is available. Monitor https://dd.weather.gc.ca/doc/genots/ for notifications on the new launch date. Information about free-form polygons representing the true threat area of a weather hazard remains under media embargo until launch, 2) marine alerts will now be issued for smaller zone splits in certain areas of Atlantic and Pacific waters and 3) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – juillet 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour le printemps 2026, il y aura des changements incluant... 1) Le déploiement par ECCC visant à introduire des polygones de forme libre pour représenter la zone réelle de menace d’un aléa météorologique, qui était initialement prévu pour juin 2026, est retardé. Nous communiquerons la nouvelle date lorsqu’elle sera disponible. Surveiller https://dd.weather.gc.ca/doc/genots/ pour les notifications concernant la nouvelle date de lancement. Les informations concernant les polygones de forme libre représentant la zone réelle de menace d’un aléa météorologique demeurent sous embargo médiatique jusqu’au lancement, 2) les alertes marines seront désormais émises pour des subdivisions de zones plus petites dans certaines régions des eaux de l’Atlantique et du Pacifique et 3) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/cap-pac@canada.ca,urn:oid:2.49.0.1.124.2089909142.2026,2026-09-02T20:34:00-00:00 cap-pac@canada.ca,urn:oid:2.49.0.1.124.1168274556.2026,2026-09-02T20:45:38-00:00 cap-pac@canada.ca,urn:oid:2.49.0.1.124.3298443632.2026,2026-09-02T20:54:47-00:00 cap-pac@canada.ca,urn:oid:2.49.0.1.124.1118457430.2026,2026-09-02T21:06:33-00:00 cap-pac@canada.ca,urn:oid:2.49.0.1.124.2742959089.2026,2026-09-02T21:15:32-00:00 cap-pac@canada.ca,urn:oid:2.49.0.1.124.0679138483.2026,2026-09-02T21:27:43-00:00 cap-pac@canada.ca,urn:oid:2.49.0.1.124.2422679992.2026,2026-09-02T21:46:52-00:00 cap-pac@canada.ca,urn:oid:2.49.0.1.124.1658285274.2026,2026-09-02T21:49:55-00:00 cap-pac@canada.ca,urn:oid:2.49.0.1.124.1943228113.2026,2026-09-02T21:59:46-00:00 cap-pac@canada.ca,urn:oid:2.49.0.1.124.2029773392.2026,2026-09-02T22:01:27-00:00 cap-pac@canada.ca,urn:oid:2.49.0.1.124.0743038074.2026,2026-09-02T22:09:01-00:00en-CAMetthunderstormMonitorImmediateExtremeObservedgeneral publicprofile:CAP-CP:Event:0.4thunderstormSAMESVR2026-09-02T22:09:01-00:002026-09-02T22:08:00-00:002026-09-03T00:06:01-00:00Environment Canadared warning - severe thunderstorm - in effect
At 6:07 p.m. EDT, a line of extremely dangerous thunderstorms is located from Mississauga to Dundas then to Caledonia. These extremely dangerous thunderstorms are moving quickly to the east at 100 km/h. Destructive wind gusts, loonie to ping pong ball size hail and heavy rain are possible.
Locations and nearby areas that could be impacted include: Rockwood, Eden Mills, Morriston, Moffat, Westover, Haltonville, Freelton, Silver Creek, Strabane, Lynden
This is a particularly dangerous storm with radar estimated winds reaching near 150 km/h possible.
###
Driving conditions will be difficult. Buildings and/or many trees will be destroyed. Large hail will cause significant damage and injury. There is a risk of life-threatening injury. Prolonged or widespread utility outages are expected.
Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are expected to produce damaging hail, wind or rain.
Severe thunderstorms can produce tornadoes.
Take immediate cover if a thunderstorm approaches. If outside, protect yourself from flying debris and hail. Avoid low-lying areas.
Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.
https://weather.gc.ca/layer:EC-MSC-SMC:1.0:Alert_Typewarninglayer:EC-MSC-SMC:1.0:Broadcast_Intrusiveyeslayer:SOREM:1.0:Broadcast_ImmediatelyNolayer:EC-MSC-SMC:1.1:Parent_URImsc/alert/environment/hazard/alert-3.0-ascii/consolidated-xml-2.0/20260902220901481/ON_00_01_LAND/STW/2032555391585541130202609020503_ON_00_01_LAND/actual/en_proper_complete_u-fr_proper_complete_c/NinJoWELlayer:EC-MSC-SMC:1.1:CAP_countA:23435 M:120516 C:139500profile:CAP-CP:0.4:MinorChangetextlayer:EC-MSC-SMC:1.0:Alert_Location_Statusactivelayer:EC-MSC-SMC:1.0:Alert_Namered warning - severe thunderstormlayer:EC-MSC-SMC:1.0:Alert_CoverageOntariolayer:SOREM:1.0:Broadcast_TextAt 6:09 p.m. Eastern Daylight Time Wednesday, Environment Canada has issued a severe thunderstorm warning for Southwestern and the Golden Horseshoe area Ontario. Extra care and attention should be exercised in and around the following localities: the City of Hamilton, Waterloo, Wellington, Niagara, the City of Toronto, Dunnville, Caledonia, Haldimand, Oxford, Brant, Halton and Peel. Environment Canada meteorologists are tracking very dangerous thunderstorms capable of producing one or more of the following: destructive winds or baseball size or greater hail. Take cover immediately if threatening weather approaches. Intense lightning is likely and tornadoes are possible with any thunderstorm that develops.layer:EC-MSC-SMC:1.1:Designation_CodeON_00_01_LANDlayer:SOREM:2.0:WirelessImmediateYeslayer:SOREM:2.0:WirelessTextEnvironment Canada: DESTRUCTIVE WINDS in this mobile coverage area.
Take immediate cover in a basement or interior room if weather threat approaches. Shelter from flying debris if outside.
Severe Thunderstorm Warning, 6:09 p.m. EDT Wednesday 2 September
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publicprofile:CAP-CP:Event:0.4thunderstormSAMESVR2026-09-02T22:09:01-00:002026-09-02T22:08:00-00:002026-09-03T00:06:01-00:00Environnement Canadaalerte rouge - orages violents - en vigueur
À 18h07 HAE, une ligne d’orages très dangereux s’étend de Mississauga jusqu’à proximité de Dundas et vers les environs de Caledonia. Ces orages très dangereux se déplacent rapidement vers l’est à 100 km/h. Des rafales destructrices, de la grêle de la taille d'une pièce d'un dollar à une balle de ping-pong et de la pluie forte sont possibles.
Les régions et lieux à proximité possiblement touchés comprennent: Rockwood, Eden Mills, Morriston, Moffat, Westover, Haltonville, Freelton, Silver Creek, Strabane, Lynden
L'orage est particulièrement dangereux et, selon le radar, les vents s'élèvent peut-être à près de 150 km/h.
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Les conditions routières seront difficiles. Des bâtiments ou de nombreux arbres seront détruits. La grosse grêle causera d'importants dégâts et des blessures graves. Il y a un risque de blessure mortelle. Des pannes de courant généralisées ou prolongées sont attendues.
Les alertes d'orages violents sont émises lorsque des orages imminents ou en cours risquent de produire de la pluie, de la grêle ou des vents destructeurs.
Les orages violents peuvent produire des tornades.
Mettez-vous immédiatement à l'abri si un orage approche. Si vous êtes à l'extérieur, protégez-vous des débris volants et de la grêle. Évitez les basses terres.
Gestion des situations d'urgence Ontario vous recommande de trouver un abri immédiatement si un phénomène météorologique menaçant est imminent.
https://meteo.gc.ca/layer:EC-MSC-SMC:1.0:Alert_Typewarninglayer:EC-MSC-SMC:1.0:Broadcast_Intrusiveyeslayer:SOREM:1.0:Broadcast_ImmediatelyNolayer:EC-MSC-SMC:1.1:Parent_URImsc/alert/environment/hazard/alert-3.0-ascii/consolidated-xml-2.0/20260902220901481/ON_00_01_LAND/STW/2032555391585541130202609020503_ON_00_01_LAND/actual/en_proper_complete_u-fr_proper_complete_c/NinJoWELlayer:EC-MSC-SMC:1.1:CAP_countA:23435 M:120516 C:139500profile:CAP-CP:0.4:MinorChangetextlayer:EC-MSC-SMC:1.0:Alert_Location_Statusactivelayer:EC-MSC-SMC:1.0:Alert_Namealerte rouge - orages violentslayer:EC-MSC-SMC:1.0:Alert_CoverageOntariolayer:SOREM:1.0:Broadcast_TextÀ 18h09 heure avancée de l'Est le mercredi, Environnement Canada a émis une alerte d'orages violents pour le sud-ouest et la région du Golden Horseshoe en l'Ontario. Une attention et des précautions additionnelles devraient être exercées près et autour des localités suivantes: la ville de Hamilton, Waterloo, Wellington, Niagara, la ville de Toronto, Dunnville, Caledonia, Haldimand, Oxford, Brant, Halton et Peel. Les météorologues d’Environnement Canada surveillent l'évolution d'orages violents très dangereux pouvant produire un ou plus des éléments suivants : vents destructeurs ou grêle de la taille d'une balle de baseball ou plus. Mettez-vous immédiatement à l'abri si un phénomène météorologique menaçant s'approche. De nombreux éclairs sont probables et il y a toujours un risque de tornade avec un orage.layer:EC-MSC-SMC:1.1:Designation_CodeON_00_01_LANDlayer:SOREM:2.0:WirelessImmediateYeslayer:SOREM:2.0:WirelessTextEnvironnement Canada : VENTS DESTRUCTEURS dans votre zone actuelle de couverture cellulaire.
Réfugiez-vous sans tarder au sous-sol ou dans une pièce sans fenêtre en cas de temps menaçant. À l'extérieur, protégez-vous des débris projetés.
Alerte d'orages violents, 18h09 HAE le mercredi 2 septembre
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publicprofile:CAP-CP:Event:0.4thunderstormSAMESVR2026-09-02T22:09:01-00:002026-09-02T23:09:01-00:00Environment Canadared warning - severe thunderstorm - ended
Severe thunderstorms associated with this alert have weakened or moved out of the area.
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https://weather.gc.ca/layer:EC-MSC-SMC:1.0:Alert_Typewarninglayer:EC-MSC-SMC:1.0:Broadcast_Intrusiveyeslayer:SOREM:1.0:Broadcast_ImmediatelyNolayer:EC-MSC-SMC:1.1:Parent_URImsc/alert/environment/hazard/alert-3.0-ascii/consolidated-xml-2.0/20260902220901481/ON_00_01_LAND/STW/2032555391585541130202609020503_ON_00_01_LAND/actual/en_proper_complete_u-fr_proper_complete_c/NinJoWELlayer:EC-MSC-SMC:1.1:CAP_countA:23435 M:120516 C:139500profile:CAP-CP:0.4:MinorChangenonelayer:EC-MSC-SMC:1.0:Alert_Location_Statusendedlayer:EC-MSC-SMC:1.0:Alert_Namered warning - severe thunderstormlayer:EC-MSC-SMC:1.0:Alert_CoverageOntariolayer:EC-MSC-SMC:1.1:Designation_CodeON_00_01_LANDlayer:SOREM:2.0:WirelessImmediateNolayer:EC-MSC-SMC:1.1:Alert_Location_StatusendedWoodstock - Tillsonburg - Oxford County43.3111,-80.4826 43.2669,-80.471 43.2669,-80.471 43.2668,-80.471 43.2286,-80.4407 43.1793,-80.4363 43.1575,-80.5131 43.1514,-80.6087 43.065,-80.5573 42.9825,-80.5419 42.9338,-80.5071 42.8843,-80.5056 42.8662,-80.5992 42.8545,-80.7055 42.8486,-80.6931 42.8282,-80.7115 42.832,-80.7243 42.8365,-80.728 42.8238,-80.7446 42.8349,-80.7563 42.8465,-80.762 42.836,-80.814 42.8296,-80.8773 42.8704,-80.8941 42.9126,-80.8989 42.9125,-80.8992 42.9627,-80.9227 43.0239,-80.9269 42.998,-80.9556 42.9949,-80.973 43.0022,-80.9926 43.0547,-81.019 43.0498,-81.0347 43.1344,-81.0918 43.235,-81.1208 43.3001,-80.9344 43.3305,-80.8394 43.3534,-80.7357 43.3337,-80.7331 43.3107,-80.7347 43.3347,-80.6143 43.3477,-80.504 43.3111,-80.4826layer:EC-MSC-SMC:1.0:CLC041710profile:CAP-CP:Location:0.33532Kitchener - Cambridge - Region of Waterloo43.692,-80.5511 43.565,-80.3734 43.5682,-80.3645 43.5311,-80.3704 43.4688,-80.2988 43.3866,-80.2678 43.3976,-80.2045 43.3699,-80.1936 43.3443,-80.1877 43.3378,-80.2181 43.3341,-80.2487 43.3196,-80.2415 43.3075,-80.2386 43.3062,-80.2385 43.277,-80.369 43.2668,-80.471 43.2668,-80.4713 43.3036,-80.4911 43.3477,-80.504 43.3213,-80.6127 43.3107,-80.7347 43.3328,-80.7382 43.3534,-80.7357 43.3812,-80.74 43.4074,-80.7373 43.4359,-80.768 43.4682,-80.7961 43.4828,-80.8353 43.4982,-80.8687 43.586,-80.8128 43.6483,-80.7543 43.5883,-80.6062 43.6577,-80.598 43.692,-80.5511layer:EC-MSC-SMC:1.0:CLC046430profile:CAP-CP:Location:0.33530ended threat area43.449982,-80.50222 43.709469,-80.487534 43.714005,-80.164894 43.689073118397,-79.97036847474988 43.692291,-80.003983 43.602547,-80.18203 43.375927,-80.094971 43.239811,-80.141716 43.139347,-80.252579 43.031418,-80.118858 42.913800021271385,-78.90588721936759 42.905239004991515,-78.90596299995582 42.89275682821913,-78.91709302356044 43.071453,-80.580826 43.18774,-80.712837 43.449982,-80.5022242.924783063854136,-78.9057900298302 42.92305551781538,-78.90580529136399 42.923055517577495,-78.9058052913661 42.924783063854136,-78.9057900298302layer:EC-MSC-SMC:DLC:1.1endedprofile:CAP-CP:Location:0.33523025profile:CAP-CP:Location:0.33523017profile:CAP-CP:Location:0.33532042profile:CAP-CP:Location:0.33530035profile:CAP-CP:Location:0.33523008profile:CAP-CP:Location:0.33530020profile:CAP-CP:Location:0.33530010profile:CAP-CP:Location:0.33530016profile:CAP-CP:Location:0.33530004profile:CAP-CP:Location:0.33532045profile:CAP-CP:Location:0.33530013fr-CAMetoragesAllClearPastMinorObservedgrand publicprofile:CAP-CP:Event:0.4thunderstormSAMESVR2026-09-02T22:09:01-00:002026-09-02T23:09:01-00:00Environnement Canadaalerte rouge - orages violents - terminée
Les orages violents associés à cette alerte se sont affaiblis ou ont quitté la région.
###
https://meteo.gc.ca/layer:EC-MSC-SMC:1.0:Alert_Typewarninglayer:EC-MSC-SMC:1.0:Broadcast_Intrusiveyeslayer:SOREM:1.0:Broadcast_ImmediatelyNolayer:EC-MSC-SMC:1.1:Parent_URImsc/alert/environment/hazard/alert-3.0-ascii/consolidated-xml-2.0/20260902220901481/ON_00_01_LAND/STW/2032555391585541130202609020503_ON_00_01_LAND/actual/en_proper_complete_u-fr_proper_complete_c/NinJoWELlayer:EC-MSC-SMC:1.1:CAP_countA:23435 M:120516 C:139500profile:CAP-CP:0.4:MinorChangenonelayer:EC-MSC-SMC:1.0:Alert_Location_Statusendedlayer:EC-MSC-SMC:1.0:Alert_Namealerte rouge - orages violentslayer:EC-MSC-SMC:1.0:Alert_CoverageOntariolayer:EC-MSC-SMC:1.1:Designation_CodeON_00_01_LANDlayer:SOREM:2.0:WirelessImmediateNolayer:EC-MSC-SMC:1.1:Alert_Location_StatusendedWoodstock - Tillsonburg - comté d'Oxford43.3111,-80.4826 43.2669,-80.471 43.2669,-80.471 43.2668,-80.471 43.2286,-80.4407 43.1793,-80.4363 43.1575,-80.5131 43.1514,-80.6087 43.065,-80.5573 42.9825,-80.5419 42.9338,-80.5071 42.8843,-80.5056 42.8662,-80.5992 42.8545,-80.7055 42.8486,-80.6931 42.8282,-80.7115 42.832,-80.7243 42.8365,-80.728 42.8238,-80.7446 42.8349,-80.7563 42.8465,-80.762 42.836,-80.814 42.8296,-80.8773 42.8704,-80.8941 42.9126,-80.8989 42.9125,-80.8992 42.9627,-80.9227 43.0239,-80.9269 42.998,-80.9556 42.9949,-80.973 43.0022,-80.9926 43.0547,-81.019 43.0498,-81.0347 43.1344,-81.0918 43.235,-81.1208 43.3001,-80.9344 43.3305,-80.8394 43.3534,-80.7357 43.3337,-80.7331 43.3107,-80.7347 43.3347,-80.6143 43.3477,-80.504 43.3111,-80.4826layer:EC-MSC-SMC:1.0:CLC041710profile:CAP-CP:Location:0.33532Kitchener - 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