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Federated States of Micronesia
Chuuk State: Chuuk State was relatively dry throughout most of the 3rd Quarter of 2008. Very dry conditions in July and August were followed by a wet September, a pattern also seen nearly everywhere else in Micronesia. The 3-month total rainfall ranged from about 25 to 30 inches throughout Chuuk State. Polowat’s 3-month total of only 7.38 inches (17%) looks suspiciously low, but is somewhat in-line with low values of rainfall at Woleai (Yap State) where the 3-month total was reported to be 17.78 inches (44%). No problems were reported from within Chuuk State with respect to the dry conditions in July and August.
Chuuk State Rainfall Summary 3rd Quarter 2008
| Station |
|
July |
August |
Sept. |
3rd Qtr |
Predicted |
Chuuk Lagoon |
Chuuk WSO |
Rainfall (inches) |
7.46 |
3.27 |
13.85 |
24.58 |
|
| % of Normal |
62% |
22% |
120% |
64% |
|
Piis Panew* |
Rainfall (inches) |
3.81 |
4.67 |
10.24 |
18.72 |
|
| % of Normal |
31% |
37% |
89% |
49% |
|
Southern Mortlocks |
Lukunoch* |
Rainfall (inches) |
11.54
|
5.14 |
10.63 |
27.31 |
|
| % of Normal |
95% |
41% |
93% |
71% |
|
Ettal* |
Rainfall (inches) |
7.01 |
8.67 |
10.22 |
25.90 |
|
| % of Normal |
58% |
69% |
89% |
68% |
|
Ta* |
Rainfall (inches) |
8.99 |
8.93 |
15.34 |
33.60 |
|
| % of Normal |
74$ |
71% |
134% |
87% |
|
Namoluk* |
Rainfall (inches) |
8.56 |
5.77 |
10.64 |
24.97 |
|
| % of Normal |
71% |
46% |
93% |
65% |
|
Northern Atolls |
Fananu* |
Rainfall (inches) |
3.77 |
5.15 |
9.06 |
17.98 |
|
| % of Normal |
31% |
41% |
79% |
47% |
|
Onoun* |
Rainfall (inches) |
9.07 |
5.14 |
14.56 |
28.77 |
|
| % of Normal |
75% |
41% |
127% |
75% |
|
Northern Mortlocks |
Losap* |
Rainfall (inches) |
14.19 |
4.29 |
12.32 |
30.80 |
|
| % of Normal |
117% |
34% |
107% |
81% |
|
Nama* |
Rainfall (inches) |
11.74 |
4.65 |
9.67 |
26.06 |
|
| % of Normal |
97% |
37% |
84% |
68% |
|
Western Atolls |
Polowat |
Rainfall (inches) |
2.72 |
2.12 |
2.54 |
7.38 |
|
| % of Normal |
22% |
17% |
22% |
19% |
100% |
Predictions made in 2nd Quarter 2008 Pacifc ENSO Update newsletter.
* Long term normal is not established for these sites (% normal based on WSO).
Climate Outlook:
Based on a continuation of the pattern of anomalous low-level easterly wind, the risk of a tropical storm or typhoon is very unlikely anywhere in Chuuk State through the remainder of 2008 through the first half of 2009. In addition, this same easterly wind pattern should be accompanied by near normal rainfall for the foreseeable future.
Forecast rainfall for Chuuk State from October 2008 through September 2009 is as follows:
|
Inclusive Period
|
% of Long-Term Average Rainfall /
Forecast Rainfall (inches)
|
Chuuk Lagoon, and Northern Mortlocks |
Polowat |
Northern Atolls |
|
October - December 2008 |
100%
(35.55 inches)
|
90%
(32.00 inches)
|
100%
(35.55 inches)
|
100%
(35.55 inches)
|
January - March 2009 |
100% |
90% |
100% |
110% |
April - June 2009 |
110% |
100% |
100% |
120% |
July - September 2009 |
100% |
100% |
100% |
100% |
Forecast rainfall quantities represent BEST ESTIMATES given the probabalistic forecast for each particular season and station.
source: UOG-WERI
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