Isa first affected Pohnpei as a tropical storm on April 12.
While passing near the island, the storm produced moderate winds across the island, peaking at 95 km/h (60 mph).
The winds downed several trees and tree limbs which destroyed 40% of the island's power lines.
A few buildings reported roof damage.
About 15% of the crops on Pohnpei were damaged, including losses to the banana and breadfruit crops.
After the passage of the typhoon, President of the Federated States of Micronesia Jacob Nena declared Pohnpei as a major disaster area due to the damage from Typhoon Isa and subsequent flooding; on April 20 heavy rainfall caused widespread mudslides and 19 fatalities on the island, though they were not related to Isa.

In Guam, the threat of Typhoon Isa postponed a flight from Guam to Honolulu, Hawaii for 48 hours.
The flight was the last in Operation Pacific Haven, which was a multimillion-dollar humanitarian effort to transport more than 6,600 Kurds in a political asylum to the mainland of the United States.
The threat of the typhoon also canceled the first round of the Omega Tour golf event, which was the second professional golf tournament in the island's history.
Though Typhoon Isa passed well to the south of Guam, one of its outer rainbands stalled across the island, which dropped heavy rainfall of 15–25 cm (6–10 in) across the island.
The rainfall was welcome as it occurred during the dry season, and largely contributed to rainfall at the Guam International Airport being 45% above normal from the period between January through April.
The rainband also produced wind gusts that reached 86 km/h (53 mph) at the island's Naval Air Station; the winds resulted in sporadic power outages across the island.
The typhoon caused some light damage to buildings, particularly on the south side of the island.
The combination of winds and sea salt caused damage to the island's tomato, okra, cucumber, and soy bean crops.

Typhoon Isa later dropped light rainfall on the island of Rota.
Across its path, damage from the storm totaled over $1 million (1997 USD, $1.56 million 2019 USD).
No deaths or injuries were reported.
Isa first affected Pohnpei as a tropical storm on April 12. While passing near the island, the storm produced moderate winds across the island, peaking at 95 km/h (60 mph). The winds downed several trees and tree limbs which destroyed 40% of the island's power lines. A few buildings reported roof damage. About 15% of the crops on Pohnpei were damaged, including losses to the banana and breadfruit crops. After the passage of the typhoon, President of the Federated States of Micronesia Jacob Nena declared Pohnpei as a major disaster area due to the damage from Typhoon Isa and subsequent flooding; on April 20 heavy rainfall caused widespread mudslides and 19 fatalities on the island, though they were not related to Isa.
In Guam, the threat of Typhoon Isa postponed a flight from Guam to Honolulu, Hawaii for 48 hours. The flight was the last in Operation Pacific Haven, which was a multimillion-dollar humanitarian effort to transport more than 6,600 Kurds in a political asylum to the mainland of the United States. The threat of the typhoon also canceled the first round of the Omega Tour golf event, which was the second professional golf tournament in the island's history. Though Typhoon Isa passed well to the south of Guam, one of its outer rainbands stalled across the island, which dropped heavy rainfall of 15–25 cm (6–10 in) across the island. The rainfall was welcome as it occurred during the dry season, and largely contributed to rainfall at the Guam International Airport being 45% above normal from the period between January through April. The rainband also produced wind gusts that reached 86 km/h (53 mph) at the island's Naval Air Station; the winds resulted in sporadic power outages across the island. The typhoon caused some light damage to buildings, particularly on the south side of the island. The combination of winds and sea salt caused damage to the island's tomato, okra, cucumber, and soy bean crops.
Typhoon Isa later dropped light rainfall on the island of Rota. Across its path, damage from the storm totaled over $1 million (1997 USD, $1.56 million 2019 USD). No deaths or injuries were reported.
Typhoon Isa