Near zero visibility in fog is expected.What: Widespread fog reducing visibility to near zero.Where: Metro Vancouver.When: Now until Thursday morning.Remarks: A ridge of high pressure has settled over the Vancouver region. Cool, humid marine air is trapped under a warm, stagnant airmass aloft. This results in patchy fog across Metro Vancouver today. Tonight, the fog will become more widespread as temperatures drop. Conditions are expected to improve Thursday morning when temperatures start rising and mixing near the surface helps the fog to dissipate.###Travel will likely be hazardous in some locations. Visibility will likely be suddenly reduced at times.Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to BCstormec.gc.ca or post reports on X using #BCStorm.For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.