A sudden change in weather is caused by an air mass.
air mass
the arrival of an air mass
A sudden drop in temperature.
a sudden drop in the temperature
Some clues that the weather is changing would be clouds rolling in. The air will smell different even. You can hear thunder. Wind will start blowing.
Earthquakes are not caused by weather. The are caused by movement of tectonic plates.
Eclipse Of The Moon
the arrival of an air mass
A sudden drop in the temperature
A sudden drop in the temperature
A sudden drop in temperature.
A sudden drop in temperature.
A sudden drop in temperature.
A sudden drop in temperature.
A sudden drop in the temperature
A sudden drop in temperature.
By rather sudden changes in wind paths and temperatures
a sudden drop in the temperature