urn:oid:2.49.0.1.124.0524805705.2026 cap-pac@canada.ca 2026-07-18T20:30:00-00:00 Actual Update Env. Can. - Can. Met. Ctr. – Montréal Public profile:CAP-CP:0.4 layer:SOREM:1.0 layer:EC-MSC-SMC:1.0 layer:EC-MSC-SMC:1.1 layer:SOREM:2.0 Service Notice – April 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 initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for June 2026 deployment. Data changes will appear in CAP following this deployment, 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 – avril 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) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement en juin 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement, 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:2.49.0.1.124.1836470716.2026,2026-07-18T16:24:51-00:00 cap-pac@canada.ca,urn:oid:2.49.0.1.124.1607311950.2026,2026-07-18T18:26:21-00:00 cap-pac@canada.ca,urn:oid:2.49.0.1.124.1303805770.2026,2026-07-18T20:14:59-00:00 en-CA Met thunderstorm Monitor Expected Severe Likely general public profile:CAP-CP:Event:0.4 thunderstorm SAME SVA 2026-07-18T20:30:00-00:00 2026-07-18T20:20:00-00:00 2026-07-19T02:01:00-00:00 Environment Canada orange watch - severe thunderstorm - in effect Conditions are favourable for the development of dangerous thunderstorms that may be capable of producing damaging wind gusts, large hail and heavy rain. What: Wind gusts up to 110 km/h. Quarter to ping pong ball sized hail. Rainfall amounts 25 to 40 mm. Risk of tornadoes. When: Ending early this evening. Additional Comments: A cold front pushing through the region may continue to bring thunderstorms as it moves southeast over the area. ### Utility outages are possible. Significant damage to property, buildings and trees is possible. Fast-moving and rapidly rising water can sweep vehicles away and damage infrastructure. 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 ONstorm@ec.gc.ca or post reports on X using #ONStorm. For more information: https://www.ontario.ca/page/be-prepared-emergency. When thunder roars, go indoors! Lightning kills and injures Canadians every year. Secure loose objects. Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches. https://weather.gc.ca/ layer:EC-MSC-SMC:1.0:Alert_Type watch layer:EC-MSC-SMC:1.0:Broadcast_Intrusive no layer:SOREM:1.0:Broadcast_Immediately No layer:EC-MSC-SMC:1.1:Parent_URI msc/alert/environment/hazard/alert-3.0-ascii/consolidated-xml-2.0/20260718202846486/WZ_80_81_CWTO/STV/1622202491028468265202607180503_WZ_80_81_CWTO/actual/en_proper_complete_c-fr_proper_complete_c/NinJo layer:EC-MSC-SMC:1.1:CAP_count A:21192 M:109335 C:126118 layer:EC-MSC-SMC:1.0:Alert_Location_Status active layer:EC-MSC-SMC:1.0:Alert_Name orange watch - severe thunderstorm layer:EC-MSC-SMC:1.0:Alert_Coverage Southern Ontario layer:EC-MSC-SMC:1.1:Designation_Code WZ_80_81_CWTO layer:SOREM:2.0:WirelessImmediate No layer:EC-MSC-SMC:1.1:Alert_Location_Status active layer:EC-MSC-SMC:1.1:Event_End_Time 2026-07-19T00:00:00.000Z layer:EC-MSC-SMC:1.1:MSC_Risk_Tiered_Ranking 4 layer:EC-MSC-SMC:1.1:MSC_Impact high layer:EC-MSC-SMC:1.1:MSC_Confidence high layer:EC-MSC-SMC:1.1:Colour orange Chatham-Kent - Rondeau Park 42.0578,-82.455 42.0454,-82.4759 42.0823,-82.4753 42.0847,-82.4806 42.109,-82.4791 42.1156,-82.4735 42.2027,-82.4678 42.2039,-82.4481 42.2408,-82.4467 42.2615,-82.4628 42.2809,-82.4456 42.2961,-82.4429 42.3013,-82.4511 42.3107,-82.4512 42.3154,-82.4659 42.3238,-82.467 42.3338,-82.4653 42.4783,-82.4404 42.4901,-82.436 42.4982,-82.4529 42.5351,-82.4386 42.5651,-82.4483 42.5756,-82.4881 42.5931,-82.5071 42.6337,-82.4767 42.6364,-82.2818 42.627,-82.1003 42.6276,-82.065 42.6246,-82.0234 42.6357,-82.0259 42.6486,-82.0159 42.6506,-82.008 42.6531,-81.926 42.651,-81.8354 42.63,-81.8308 42.6081,-81.835 42.5782,-81.7925 42.5492,-81.7512 42.4727,-81.6662 42.4497,-81.6432 42.3626,-81.7639 42.2365,-81.8364 42.2401,-82.0268 42.1118,-82.3596 42.0742,-82.4273 42.0578,-82.455 layer:EC-MSC-SMC:1.0:CLC 041410 profile:CAP-CP:Location:0.3 3536 Windsor - Leamington - Essex County 41.7225,-82.6052 41.7134,-82.6941 41.9268,-82.8988 42.0409,-83.1223 42.0737,-83.1387 42.1202,-83.1232 42.1202,-83.1232 42.1217,-83.1227 42.1217,-83.1227 42.1217,-83.1227 42.1232,-83.1223 42.1233,-83.1222 42.1251,-83.1217 42.126,-83.1219 42.126,-83.1219 42.1264,-83.122 42.1265,-83.1221 42.1292,-83.1227 42.1295,-83.1227 42.1305,-83.123 42.1387,-83.1251 42.1439,-83.1263 42.1451,-83.1266 42.1503,-83.1279 42.1523,-83.1284 42.1538,-83.1288 42.1544,-83.1289 42.1873,-83.1058 42.2416,-83.1074 42.2589,-83.1076 42.2919,-83.0885 42.3089,-83.0695 42.3189,-83.0439 42.3263,-83.0118 42.3262,-82.9949 42.327,-82.9856 42.3338,-82.9542 42.3426,-82.9423 42.3481,-82.9061 42.3338,-82.4653 42.3337,-82.4642 42.3208,-82.4245 42.3094,-82.4273 42.3008,-82.4179 42.2799,-82.417 42.2634,-82.4291 42.2447,-82.4199 42.1848,-82.4235 42.1841,-82.4441 42.108,-82.4499 42.103,-82.4558 42.0928,-82.4559 42.0867,-82.4518 42.0578,-82.455 42.0436,-82.4335 41.928,-82.4541 41.8127,-82.5705 41.7225,-82.6052 layer:EC-MSC-SMC:1.0:CLC 041420 profile:CAP-CP:Location:0.3 3537 fr-CA Met orages Monitor Expected Severe Likely grand public profile:CAP-CP:Event:0.4 thunderstorm SAME SVA 2026-07-18T20:30:00-00:00 2026-07-18T20:20:00-00:00 2026-07-19T02:01:00-00:00 Environnement Canada veille orange - orages violents - en vigueur Les conditions sont propices à la formation d'orages dangereux pouvant produire des rafales causant des dommages, de la grêle de grosse taille et de la pluie forte. Quoi : Vents soufflant en rafales jusqu'à 110 km/h. Grêle allant de la taille d'un 25 cents à celle d'une balle de ping-pong. De 25 à 40 mm de pluie. Risque de tornades. Quand : Jusque tôt ce soir. Remarques supplémentaires : Un front froid qui traverse la région pourrait continuer d'occasionner des orages en se déplaçant vers le sud-est sur la région. ### Des pannes de courant sont possibles. D'importants dommages aux biens, aux bâtiments et aux arbres sont possibles. Les eaux montant rapidement avec un fort débit peuvent emporter des véhicules et endommager les infrastructures. Les veilles d'orages violents sont émises lorsque les conditions sont propices à la formation d'orages pouvant produire de la grêle, de la pluie ou des vents destructeurs. Veuillez continuer à surveiller les alertes et les prévisions émises par Environnement Canada. Pour signaler du temps violent, envoyez un courriel à meteoON@ec.gc.ca ou publiez un message sur X en utilisant #ONMeteo. Pour obtenir plus de renseignements : https://www.ontario.ca/fr/page/se-preparer-une-situation-durgence. Quand le tonnerre gronde, rentrez vite! La foudre tue et blesse des Canadiens chaque année. Attachez les objets non fixés. 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_Type watch layer:EC-MSC-SMC:1.0:Broadcast_Intrusive no layer:SOREM:1.0:Broadcast_Immediately No layer:EC-MSC-SMC:1.1:Parent_URI msc/alert/environment/hazard/alert-3.0-ascii/consolidated-xml-2.0/20260718202846486/WZ_80_81_CWTO/STV/1622202491028468265202607180503_WZ_80_81_CWTO/actual/en_proper_complete_c-fr_proper_complete_c/NinJo layer:EC-MSC-SMC:1.1:CAP_count A:21192 M:109335 C:126118 layer:EC-MSC-SMC:1.0:Alert_Location_Status active layer:EC-MSC-SMC:1.0:Alert_Name veille orange - orages violents layer:EC-MSC-SMC:1.0:Alert_Coverage sud de l'Ontario layer:EC-MSC-SMC:1.1:Designation_Code WZ_80_81_CWTO layer:SOREM:2.0:WirelessImmediate No layer:EC-MSC-SMC:1.1:Alert_Location_Status active layer:EC-MSC-SMC:1.1:Event_End_Time 2026-07-19T00:00:00.000Z layer:EC-MSC-SMC:1.1:MSC_Risk_Tiered_Ranking 4 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layer:EC-MSC-SMC:1.0:CLC 041420 profile:CAP-CP:Location:0.3 3537 en-CA Met thunderstorm AllClear Past Minor Observed general public profile:CAP-CP:Event:0.4 thunderstorm SAME SVA 2026-07-18T20:30:00-00:00 2026-07-18T21:30:00-00:00 Environment Canada orange watch - severe thunderstorm - ended ### https://weather.gc.ca/ layer:EC-MSC-SMC:1.0:Alert_Type watch layer:EC-MSC-SMC:1.0:Broadcast_Intrusive no layer:SOREM:1.0:Broadcast_Immediately No layer:EC-MSC-SMC:1.1:Parent_URI msc/alert/environment/hazard/alert-3.0-ascii/consolidated-xml-2.0/20260718202846486/WZ_80_81_CWTO/STV/1622202491028468265202607180503_WZ_80_81_CWTO/actual/en_proper_complete_c-fr_proper_complete_c/NinJo layer:EC-MSC-SMC:1.1:CAP_count A:21192 M:109335 C:126118 layer:EC-MSC-SMC:1.0:Alert_Location_Status ended layer:EC-MSC-SMC:1.0:Alert_Name orange watch - severe thunderstorm layer:EC-MSC-SMC:1.0:Alert_Coverage Southern Ontario layer:EC-MSC-SMC:1.1:Designation_Code WZ_80_81_CWTO layer:SOREM:2.0:WirelessImmediate No layer:EC-MSC-SMC:1.1:Alert_Location_Status ended Simcoe - Delhi - Norfolk 42.7799,-80.1221 42.7597,-80.2073 42.6893,-80.2824 42.6381,-80.3129 42.6437,-80.3844 42.6121,-80.4154 42.5491,-80.0252 42.5338,-80.0303 42.5205,-80.1237 42.5585,-80.3658 42.5635,-80.6074 42.5948,-80.7143 42.614,-80.713 42.6183,-80.7159 42.6227,-80.7182 42.6944,-80.7259 42.7882,-80.717 42.8071,-80.733 42.8238,-80.7446 42.8423,-80.7352 42.8493,-80.7272 42.8432,-80.7181 42.8389,-80.7156 42.8545,-80.7055 42.8738,-80.6048 42.8843,-80.5056 42.9282,-80.5357 42.9825,-80.5419 43.0171,-80.388 43.0355,-80.241 43.0306,-80.2122 43.0168,-80.1878 42.9663,-80.1666 42.9128,-80.1494 42.9105,-80.1653 42.9095,-80.1812 42.8521,-80.1507 42.7915,-80.1318 42.7879,-80.1269 42.7835,-80.1239 42.7799,-80.1221 layer:EC-MSC-SMC:1.0:CLC 041100 profile:CAP-CP:Location:0.3 3528052 Dunnville - Caledonia - Haldimand 42.876,-79.4371 42.8607,-79.4301 42.8304,-79.4773 42.834,-79.5245 42.8191,-79.6066 42.8361,-79.6874 42.7846,-79.9766 42.798,-80.02 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