Pacific ENSO Update
3rd Quarter, 2005 Vol. 11 No. 3
American Samoa: The total rainfall of 75.32 inches in American Samoa during the first half of 2005 was wetter than normal (114%). Abundant rainfall in April, May, and June (the start of the dry season) accounted for most of the surplus.
American Samoa Rainfall Summary 2nd Quarter 2005
| Station | Apr. | May | Jun. | Total | 6-month Total |
|
|---|---|---|---|---|---|---|
| Pago Pago WSO | Rainfall (inches) | 14.50 | 10.78 | 13.31 | 38.59 | 75.32 |
| % of Normal | 130% | 103% | 224% | 152% | 114% |
Climate Outlook:
Computer forecasts and a consensus of outlooks from several regional meteorological centers indicate that rainfall in American Samoa is likely to be near normal through the winter dry season. Long-range computer rainfall forecasts, however, have only limited skill in the tropical Pacific islands.
Predicted rainfall for American Samoa from September 2005 through August 2006 is:
Inclusive Period |
% of Long-Term Average |
|---|---|
Sep - Oct 2005 (Dry Season) |
105% |
| Nov - Dec 2005 (Onset of Rainy Season)
|
100% |
Jan 2006 - May 2006 (Heart of next Rainy Season) |
110% |
Apr - August 2006 (Next Dry Season) |
100% |