By early next week, we might be talking about a Category 5 hurricane, but widespread flooding is going to be the most impactful threat from Melissa. Here's how bad it could get in Haiti and Jamaica.

Track Melissa with our collection of maps here.

Fierce winds, rain and hail whipped through central Oklahoma Thursday night, creating scenes that looked like something out of a hurricane. See how hail blanketed sidewalks and pummeled cars.

Jamaica, Haiti and the Dominican Republic are facing potentially catastrophic flooding as Tropical Storm Melissa trudges through the Caribbean. Melissa is expected to strengthen into a hurricane over the weekend, but it’s already had a deadly impact. Watch this video for the latest.

Summer rains have initiated an almost unbelievable migration of tens of millions of red crabs on Australia’s Christmas Island. Watch this video to learn why they make the annual trek over, under and through almost everything, and see how their two-legged neighbors try to make it easier for them.