June 30
edit1792: The first known tornado in Canadian history caused severe damage to forests on the Niagara Peninsula.
1912: The Regina Cyclone killed 28 people in Regina, Saskatchewan, making it the deadliest tornado in Canadian history.
1981: Tropical Storm Kelly struck the Philippines, causing severe flooding that killed nearly 200 people.
2011: Tropical Storm Arlene moved ashore on Veracruz, Mexico, bringing flooding, landslides, and high winds that killed 18 people.