A weather forecast predicts that a sunny week will be followed by a rainy weekend which pressure system are likely to occur
First a high-pressure system, and then a low pressure system
First a high-pressure system, and then another high-pressure system
First a low pressure system, and then a high pressure system
First a low pressure system, and then another low pressure system
First a high-pressure system, and then a low pressure system.
High-pressure systems generally bring clear skies and sunny weather, while low-pressure systems are associated with cloudy skies and rainy conditions. This sequence is common as a high-pressure system can create a stable atmosphere leading to sunny weather, but eventually gives way to a low-pressure system which brings in moisture and precipitation.