| SOUTHERN OSCILLATION | OLR INDEX | EQUATORIAL ZONAL WIND INDEX | Summer Asian Monsoon OLR Index |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MONTH | SOI | DARWIN | TAHITI | OLR-PH | OLR-MC | OLR-DL | U200-IN | U200-CP | U850-WP | U850-CP | U850-EP | Activity | N-shift | W-shift |
| Apr 2024 | -0.3 | 0.1 | -0.4 | -1.5 | 0.0 | -0.3 | 0.2 | -0.4 | -0.3 | -0.3 | -0.7 | /// | /// | /// |
| May 2024 | 0.7 | 0.0 | 0.8 | -0.2 | 0.0 | -0.9 | 0.4 | -0.1 | -0.4 | -2.3 | -1.4 | -0.2 | -0.3 | 0.7 |
| Jun 2024 | 0.1 | 0.8 | 0.8 | -0.7 | 0.8 | -0.5 | -0.9 | -0.5 | 0.0 | -0.2 | 0.9 | -0.1 | -0.4 | 0.4 |
| Jul 2024 | -0.9 | 0.7 | -0.4 | 0.4 | 0.2 | 0.7 | -1.4 | -0.1 | -0.4 | -1.2 | -1.5 | 0.8 | -0.4 | -0.1 |
| Aug 2024 | 1.1 | 0.0 | 1.5 | -1.3 | 0.7 | -0.6 | 0.8 | -1.4 | -0.6 | -0.4 | -0.2 | -1.3 | -1.0 | 1.1 |
| Sep 2024 | -0.1 | -0.4 | -0.6 | 1.3 | 0.0 | -0.5 | -0.2 | -0.1 | -0.3 | -0.7 | -0.5 | 0.9 | 1.8 | -0.5 |
| Oct 2024 | 0.6 | -0.3 | 0.7 | 0.7 | -0.1 | -0.9 | -0.7 | 0.5 | -0.7 | -1.3 | -1.0 | 0.1 | 1.4 | -0.9 |
| Nov 2024 | 0.6 | 0.4 | 1.1 | -0.3 | -0.4 | -1.2 | -0.9 | -0.3 | -0.8 | -0.2 | 1.1 | /// | /// | /// |
| Dec 2024 | 0.9 | -0.8 | 1.0 | 1.0 | 1.2 | -0.8 | -1.7 | 1.3 | -1.7 | -1.9 | -0.6 | /// | /// | /// |
| Jan 2025 | 0.2 | 0.5 | 1.1 | 0.3 | 0.6 | -1.1 | -1.5 | 0.0 | -1.5 | -0.9 | 1.4 | /// | /// | /// |
| Feb 2025 | 0.7 | 0.1 | 1.7 | 1.6 | 1.2 | -1.2 | -1.2 | 0.6 | -1.1 | -0.7 | 2.1 | /// | /// | /// |
| Mar 2025 | 1.1 | -0.6 | 1.5 | 0.9 | 1.2 | -1.5 | -1.4 | 0.4 | -1.5 | -0.1 | 1.3 | /// | /// | /// |
| Apr 2025 | 0.5 | -0.9 | -0.1 | -0.2 | 1.7 | -0.3 | -1.0 | -0.1 | -0.7 | -0.5 | 0.4 | /// | /// | /// |
| DEFINITION, LOCATION, AREA |
TAHITI - DARWIN |
12.5ºS 131ºE |
17.5ºS 150ºW |
20-10ºN 110-140ºE |
5ºN-5ºS 110-135ºE |
5ºN-5ºS 170ºE-170ºW |
5ºN-5ºS 80-100ºE |
5ºN-5ºS 180-125ºW |
5ºN-5ºS 160ºE-175ºW |
5ºN-5ºS 170ºW-135ºW |
5ºN-5ºS 130-100ºW |
SAMOI (A) | SAMOI (N) | SAMOI (W) |
| SEA SURFACE TEMPERATURE and ANOMALY(ºC) | ||||||||||||||
| MONTH | IOBW | NINO.WEST | NINO.4 | NINO.3 | NINO.1+2 | |||||||||
| Apr 2024 | 29.98 | 0.74 | 29.58 | 0.60 | 29.6 | 0.9 | 28.3 | 0.7 | 25.8 | 0.1 | ||||
| May 2024 | 29.75 | 0.72 | 29.91 | 0.44 | 29.6 | 0.6 | 27.1 | -0.1 | 24.0 | -0.5 | ||||
| Jun 2024 | 28.74 | 0.59 | 30.42 | 0.75 | 29.7 | 0.7 | 26.4 | -0.2 | 22.5 | -0.7 | ||||
| Jul 2024 | 27.96 | 0.59 | 30.17 | 0.62 | 29.4 | 0.4 | 25.7 | -0.1 | 21.5 | -0.4 | ||||
| Aug 2024 | 27.74 | 0.71 | 30.60 | 1.16 | 29.3 | 0.5 | 24.7 | -0.4 | 20.6 | -0.2 | ||||
| Sep 2024 | 27.74 | 0.54 | 30.21 | 0.64 | 28.9 | 0.1 | 24.7 | -0.2 | 20.1 | -0.5 | ||||
| Oct 2024 | 28.26 | 0.58 | 30.44 | 0.80 | 28.7 | -0.1 | 24.6 | -0.4 | 20.5 | -0.5 | ||||
| Nov 2024 | 28.72 | 0.73 | 30.01 | 0.47 | 28.8 | 0.0 | 24.9 | -0.2 | 21.8 | 0.1 | ||||
| Dec 2024 | 28.09 | 0.08 | 29.93 | 0.76 | 27.9 | -0.7 | 24.7 | -0.5 | 22.9 | 0.0 | ||||
| Jan 2025 | 28.09 | 0.15 | 29.71 | 1.06 | 27.6 | -0.7 | 25.5 | -0.2 | 24.6 | 0.0 | ||||
| Feb 2025 | 28.53 | 0.37 | 29.26 | 0.84 | 27.5 | -0.7 | 26.6 | 0.2 | 26.8 | 0.6 | ||||
| Mar 2025 | 29.07 | 0.34 | 29.34 | 0.79 | 27.8 | -0.5 | 27.9 | 0.7 | 27.9 | 1.2 | ||||
| Apr 2025 | 29.64 | 0.40 | 29.64 | 0.66 | 28.5 | -0.2 | 27.7 | 0.1 | 26.6 | 0.9 | ||||
| DEFINITON, LOCATION, AREA |
20ºN-20ºS 40-100ºE |
15ºN-EQ 130-150ºE |
5ºN-5ºS 160ºE-150ºW |
5ºN-5ºS 150-90ºW |
EQ-10ºS 90-80ºW |
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