April 9
Palm Sunday Church Bombings (Egypt, 2017)
On April 9, 2017, two Coptic Christian churches in Egypt—St. George’s in Tanta and Saint Mark’s Cathedral in Alexandria—were struck by coordinated suicide bombings during Palm Sunday services. The attacks killed 47 people and wounded over 120, marking one of the deadliest days for Egypt’s Christian minority in recent history and intensifying national and international scrutiny of religious violence and security in Egypt.
The Aviateca Flight 901 Crash
On April 9, 1990, Aviateca Flight 901, a DC-9-32 en route from Guatemala City to San Salvador, crashed into the San Vicente volcano during its approach to Ilopango International Airport amidst poor weather, killing all 81 aboard. The tragedy became a landmark case of controlled flight into terrain (CFIT) and led to significant changes in aviation safety protocols.
The 1972 Black Hills Flood
On the night of June 9–10, 1972, a stationary thunderstorm system unleashed unprecedented rainfall over the Black Hills region of South Dakota, causing Rapid Creek to surge and leading to the catastrophic collapse of the Canyon Lake Dam. The resulting flash flood swept through Rapid City under cover of darkness, killing 238 people, injuring thousands, and destroying much of the city’s infrastructure and homes. The tragedy spurred lasting changes in disaster policy, urban planning, and public memory.
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