"We are waiting for the storm to hit, hoping that it won't destroy our region," said Bluefields resident Ricardo Gómez, who was 8 when Joan hit.
The area was also battered by two powerful hurricanes, Eta and Iota, in quick succession in 2020, causing an estimated $700 million in damage.
Officials in Costa Rica expressed concern that the storm would unleash landslides and flooding in an area already saturated by days of rain.
Costa Rica's government said that seven shelters in the northern part of the country already held nearly 700 people displaced by flooding.
A massive landslide a week ago cut the main highway linking the capital San Jose to the Caribbean coast and it remained closed Friday. The government canceled classes nationwide Friday.
Heavy rains had also destroyed or damaged a number of bridges.
A tropical storm warning was in effect for Colombia's San Andres Island and from Cabo Blanco in Costa Rica northward to Puerto Sandino in Nicaragua.
The Hurricane Center said it was projected to emerge over the Pacific on Saturday and gain force while moving over the Pacific roughly parallel to the coast over the following days.
The fast-moving disturbance has been drenching parts of the Caribbean region since Monday without, until Friday, meeting the criteria for a named tropical storm.
