Choose the correct phrase to complete the dramatic weather forecaster's broadcast.

If the giant marshmallow cloud moves any closer to the city, we ___ a massive hot chocolate flood by Tuesday!

The correct answer is will experience.

This sentence describes a specific, realistic future event based on a current condition, making it a First Conditional sentence. We use "will + base verb" in the main clause. Using just "experience" would make it a Zero Conditional, which is used for general facts, not a one-time event happening by Tuesday!