urn:oid:2.49.0.1.124.2082887031.2026cap-pac@canada.ca2026-05-16T16:43:19-00:00ActualUpdateEnv. 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 – 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:2.49.0.1.124.4222003684.2026,2026-05-16T16:42:07-00:00en-CAMetsquallMonitorImmediateModerateLikelygeneral publicprofile:CAP-CP:Event:0.4squallSAMESVR2026-05-16T16:42:07-00:002026-05-16T16:41:00-00:002026-05-16T19:40:07-00:00Environment Canadasquall warning in effect
Squalls with wind gusts up to 40 knots and frequent lightning are expected or occurring in the area.
A line of thunderstorms is moving east at 35 knots.
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Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Vessels without lightning protection should make their way to shore immediately. Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately.
https://weather.gc.ca/layer:EC-MSC-SMC:1.0:Alert_Typewarninglayer:EC-MSC-SMC:1.0:Broadcast_Intrusivenolayer:SOREM:1.0:Broadcast_ImmediatelyNolayer:EC-MSC-SMC:1.1:Parent_URImsc/alert/environment/hazard/alert-3.0-ascii/consolidated-xml-2.0/20260516164207792/WH_13_73_CWTO/SQW/1635377741021841102202605160503_WH_13_73_CWTO/actual/en_proper_complete_u-fr_proper_complete_c/NinJolayer:EC-MSC-SMC:1.1:CAP_countA:17993 M:93154 C:104860profile:CAP-CP:0.4:MinorChangetextlayer:EC-MSC-SMC:1.0:Alert_Location_Statusactivelayer:EC-MSC-SMC:1.0:Alert_Namesquall warninglayer:EC-MSC-SMC:1.0:Alert_CoverageCanadian portion of the Great Lakes and the Ontario portion of the St. Lawrence Riverlayer:EC-MSC-SMC:1.1:Designation_CodeWH_13_73_CWTOlayer:SOREM:2.0:WirelessImmediateNolayer:EC-MSC-SMC:1.1:Alert_Location_Statusactivelayer:EC-MSC-SMC:1.1:Newly_Active_Areas002211,002912layer:EC-MSC-SMC:1.1:Event_End_Time2026-05-16T18:41:00.000ZEastern Lake Erie42.3935,-80.0799 42.2591,-80.9327 42.66,-81.1553 42.784,-81.2109 42.7293,-80.5966 42.9012,-80.3291 42.9814,-79.6261 42.9623,-79.0529 42.9389,-78.8933 42.9052,-78.9059 42.8283,-78.9353 42.3935,-80.0799layer:EC-MSC-SMC:1.0:CLC002211profile:CAP-CP:Location:0.33526003profile:CAP-CP:Location:0.33526011profile:CAP-CP:Location:0.33526014profile:CAP-CP:Location:0.33528018profile:CAP-CP:Location:0.33528052profile:CAP-CP:Location:0.33534005profile:CAP-CP:Location:0.33534010profile:CAP-CP:Location:0.33534020Western Lake Ontario43.1293,-79.322 43.1723,-79.7776 43.3464,-79.8894 43.4925,-79.7153 43.6838,-79.5584 43.8743,-79.1002 43.9453,-78.8315 43.9796,-78.5026 44.0441,-78.1201 44.0509,-77.8441 43.9912,-77.8409 43.6548,-77.8417 43.6361,-77.8418 43.6311,-78.6903 43.4504,-79.2006 43.2627,-79.0681 43.217,-79.0451 43.1293,-79.322layer:EC-MSC-SMC:1.0:CLC002912profile:CAP-CP:Location:0.33514019profile:CAP-CP:Location:0.33514020profile:CAP-CP:Location:0.33514021profile:CAP-CP:Location:0.33514024profile:CAP-CP:Location:0.33518013profile:CAP-CP:Location:0.33521005profile:CAP-CP:Location:0.33526053profile:CAP-CP:Location:0.33526065fr-CAMetgrainsMonitorImmediateModerateLikelygrand publicprofile:CAP-CP:Event:0.4squallSAMESVR2026-05-16T16:42:07-00:002026-05-16T16:41:00-00:002026-05-16T19:40:07-00:00Environnement Canadaavertissement de grains en vigueur
Des grains accompagnés de rafales jusqu’à 40 noeuds et de nombreux éclairs sont attendus ou se produisent dans le secteur.
Une ligne d'orages se déplace vers l'est à 35 noeuds.
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Veuillez continuer à surveiller les alertes et les prévisions émises par Environnement Canada. Pour plus d’information, écoutez la station radio de la Garde côtière canadienne ou Radiométéo.
Les bateaux sans dispositif de protection contre la foudre devraient rejoindre la rive immédiatement. Les navigateurs devraient se préparer à affronter des grains. Si vous naviguez déjà, cherchez un havre immédiatement.
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