Federated States of Micronesia

Kosrae State: Although the 2007 annual rainfall at Kosrae was slightly below normal, the 199.41 inches at the Kosrae Airport was the highest value seen throughout the region (only the 221.98 inches recorded at A’asufou in American Samoa was higher). The airport’s 2007 total was just short (97%) of its normal annual rainfall of 206.17 inches. As at Pohnpei, the 4th Quarter of 2007 was particularly wet, and helped to make up for a deficit over the other months of the year.

Kosrae Rainfall Summary 4th Quarter 2007

Climate Outlook: During La Niña, the trade-wind trough, and its zonal band of cloudiness, sharpens in such a way to increase the rainfall on Kosrae. March - June (normally the wettest months of the year) are anticipated to be especially wet this year. Normal monthly rainfall values at Kosrae are typically between 17 - 20 inches for all months of the year. In 2008 perhaps five or six of the months will see monthly rains in excess of 20 inches. Easterly trade winds should continue to dominate the flow in eastern Micronesia (Pohnpei and eastward) for at least the first half of 2008. This could cause rough seas and elevated sea level on the eastern reefs and the eastern shoreline. No adverse tropical cyclone activity is expected for Kosrae State during 2008.

Forecast rainfall for Kosrae State from February 2008 through January 2009 is as follows:

source: UOG-WERI