Ampil was a tropical storm in the Philippine Sea early Wednesday Japan time, the Joint Typhoon Warning Center said in its latest advisory.
The tropical storm had sustained wind speeds of 63 miles per hour.
All times on the map are Japan time. By The New York Times
Typhoon season is year-round; however, most typhoons form from early July through mid-December.
Most typhoons scrape or strike places like the Philippines, Japan and Taiwan; they can also hit the Korean Peninsula, China and Vietnam, bringing damaging winds and storm surges.
Typhoons have also hit U.S. territories, causing billions of dollars in devastating damage to places like Guam, which was battered by Super Typhoon Mawar in May last year.
Where will it rain?
Flash flooding can occur well inland and away from the storm’s center. Even weaker storms can produce excessive rainfall that can flood low-lying areas.
Sources and notes
Tracking map Tracking data is from the National Hurricane Center. The map shows probabilities of at least 5 percent. The forecast is for up to five days, with that time span starting up to three hours before the reported time that the storm reaches its latest location. Wind speed probability data is not available north of 60.25 degrees north latitude.
Precipitation map Data for multi-day forecasts or observed rainfall totals are from the National Weather Service. The 1-day forecast is from the National Oceanic and Atmospheric Administration.
