Nile turned to blood and fish died

Cause: Red soil particles plus red harmful alagal blooms
Time: September

Invasion of frogs

Cause: Polluted Nile forces frogs ashore. Mass death due to starvation and dehydration
Time: September-October

Swarm of gnats

Cause: The biting midge Culicoides carnithorix. Breed rapidly because of frogs’ demise
Time: November

Swarm of flies

Cause: The stable fly Stomoxys calcitrans. Breed rapidly because of frogs’ demise
Time: November

Death of livestock

Cause: Bluetongue virus and African horse sickness virus, both spread by the biting midge
Time: November-December

Plague of boils

Cause: Infection spread by stable fly
Time: December-January

Hail

Cause: Very severe hailstorm
Time: February-March

Plague of locusts

Cause: The desert locust attracted by damp sand from hailstorm to settle and lay eggs
Time: February-March

Three days of darkness

Cause: First khamsin (sandstorm) of the year produces particularly dark and dense storm
Time: March

Death of firstborn males

Cause: Mycotoxins on grain, possibly Macrocylic tricothecenes. Grain damp from hail contaminated by locust faeces, stored then sealed by sand from duststorm
Time: March-April