What are the different events that can happen on a Salmon Run Map?

Solution 1:

According to one Reddit guide, there are 9 different events. I've summarized and listed them below, but the guide goes into much further detail:

• Low Tide - the water level decreases and egg collection moves
• High Tide - the water level increases
• Fog - visibility is limited. The guide notes that other events can occur during fog
• Night - Similar to Fog, and appears to happen more often with the Griller or Mothership event
• Grillers - Grillers spawn in conjunction with Night
• Cohock Charge - Lots of Cohocks spawn and some cannons will also be available
• The Mothership - Spawns a helicopter that drops crates that spawn enemies. One of the harder events according to the guide, and probably won't even happen unless you have around 180%-190% paygrade
• Firefly/Rush - Lots of Salmonids spawn and move faster than normal towards players with fireflies on them.
• Goldie Seeking - Lots of inkjet gushers appear spawning Salmonids and one Goldie. You can tell which gusher will spawn the Goldie by how much golden light is coming off of it.