| Event Category | Disaster |
| Event Group | Natural |
| Event Subgroup | Meteorological - Hydrological |
| Event Type | Storms and Severe Thunderstorms |
| Place | Southern Alberta |
| Event Start Date | August 1, 2018 |
| Event End Date | August 3, 2018 |
| Comments | A hail storm struck Calgary on July 23rd which created drifts of hail and large hailstones. The largest recorded hail stone was 64 mm in diameter – similar to the size of a tennis ball - measured in Bashaw, AB.
Less than 2 weeks later, another series of severe storms with hail affected Alberta. On August 2nd a hail storm moved through the Calgary area with golf-ball sized hail (over 50 mm in diameter). In Alberta, there was $80 million in damage – a significant proportion of that was to vehicles. The line of storms continued into Saskatchewan and Manitoba. The storm also produced an EF-4 tornado that killed one person near Alonsa, MB. |
| Fatalities | 1 |
| Injured / Infected | Unknown |
| Evacuated | Unknown |
| Estimated Total Cost | $80,000,000 |
| Federal DFAA Payments | Unknown |
| Provincial DFAA Payments | Unknown |
| Provincial Department Payments | Unknown |
| Municipal Costs | Unknown |
| OGD Costs | Unknown |
| Insurance Payments | $80,000,000 |
| NGO Payments | Unknown |
| Utility - People Affected | Unknown |
| Magnitude | Unknown |