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TC archive
TC finder
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Wind speed for TCs affecting HK
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NW Pacific - ASCAT image
NW Pacific - Winds / analyses
NW Pacific - Steering charts
Reference: TC names
Reference: Beaufort scale
Reference: TC classification
Reference: HKWW TC policy
Links to TC sites
TC Watch > ENSO Watch [Refresh] [中文]
 Real-time SOI Data |
Numerical data from here and values are calculated using the 1887-1989 base period. This information is usually updated every weekday at 2:00pm (AEST), public holidays excluded.
| Date | Pressure at Tahiti (hPa) | Pressure at Darwin (hPa) | Daily value | 30-day average SOI | 90-day average SOI |
| 25-Jul-2021 | 1016.49 | 1012.95 | 15.94 (-0.25) | 15.03 (+0.18) | 6.47 (+0.13) |
| 24-Jul-2021 | 1016.48 | 1012.90 | 16.19 (-1.66) | 14.85 (+0.05) | 6.34 (+0.32) |
| 23-Jul-2021 | 1016.15 | 1012.30 | 17.85 (+1.35) | 14.80 (+0.37) | 6.02 (+0.21) |
| 22-Jul-2021 | 1016.63 | 1013.00 | 16.50 (+7.70) | 14.43 (+0.52) | 5.81 (+0.05) |
| 21-Jul-2021 | 1016.38 | 1014.00 | 8.80 (-0.06) | 13.91 (+0.75) | 5.76 (+0.02) |
| 20-Jul-2021 | 1015.49 | 1013.10 | 8.86 (+0.06) | 13.16 (+0.84) | 5.74 (+/-0.00) |
| 19-Jul-2021 | 1014.83 | 1012.45 | 8.80 (-8.5) | 12.32 (+0.55) | 5.74 (-0.14) |
| 18-Jul-2021 | 1014.96 | 1011.20 | 17.30 (-13.11) | 11.77 (+0.51) | 5.88 (+0.05) |
| 17-Jul-2021 | 1016.94 | 1011.05 | 30.41 (-2.64) | 11.26 (+0.71) | 5.83 (+0.35) |
| 16-Jul-2021 | 1017.92 | 1011.60 | 33.05 (-4.81) | 10.55 (+0.53) | 5.48 (+0.42) |
| 15-Jul-2021 | 1017.50 | 1010.40 | 37.86 (+11.64) | 10.02 (+0.45) | 5.06 (+0.37) |
| 14-Jul-2021 | 1015.66 | 1010.45 | 26.22 (+1.04) | 9.57 (+0.33) | 4.69 (+0.34) |
| 13-Jul-2021 | 1016.64 | 1011.60 | 25.18 (+7.94) | 9.24 (+0.70) | 4.35 (+0.50) |
| 12-Jul-2021 | 1016.45 | 1012.70 | 17.24 (+2.28) | 8.54 (+0.53) | 3.85 (+0.48) |
| 11-Jul-2021 | 1015.83 | 1012.45 | 14.96 (-1.84) | 8.01 (+0.60) | 3.37 (+0.27) |
| 10-Jul-2021 | 1015.63 | 1011.95 | 16.80 (+2.09) | 7.41 (+0.53) | 3.10 (+0.08) |
| 9-Jul-2021 | 1014.84 | 1011.50 | 14.71 (+3.32) | 6.88 (+0.50) | 3.02 (+0.06) |
| 8-Jul-2021 | 1014.60 | 1011.80 | 11.39 (+0.06) | 6.38 (+0.73) | 2.96 (+0.02) |
| 7-Jul-2021 | 1014.39 | 1011.60 | 11.33 (+7.95) | 5.65 (+1.01) | 2.94 (+0.12) |
| 6-Jul-2021 | 1013.35 | 1011.85 | 3.38 (+2.40) | 4.64 (+0.83) | 2.82 (+0.12) |
| 5-Jul-2021 | 1014.11 | 1013.00 | 0.98 (-14.04) | 3.81 (+0.71) | 2.70 (+0.02) |
| 4-Jul-2021 | 1016.04 | 1012.65 | 15.02 (-4.25) | 3.10 (+0.97) | 2.68 (+0.02) |
| 3-Jul-2021 | 1016.38 | 1012.30 | 19.27 (-6.46) | 2.13 (+0.47) | 2.66 (+0.17) |
| 2-Jul-2021 | 1017.63 | 1012.50 | 25.73 (-5.72) | 1.66 (+0.53) | 2.49 (+0.43) |
| 1-Jul-2021 | 1017.31 | 1011.25 | 31.45 (+20.70) | 1.13 (+1.09) | 2.06 (+0.46) |
| 30-Jun-2021 | 1015.92 | 1013.10 | 10.75 (+9.98) | 0.04 (+0.71) | 1.60 (+0.17) |
| 29-Jun-2021 | 1015.05 | 1013.65 | 0.77 (+6.96) | -0.67 (+0.39) | 1.43 (+0.08) |
| 28-Jun-2021 | 1015.51 | 1015.10 | -6.19 (-0.57) | -1.06 (+0.18) | 1.35 (-0.08) |
| 27-Jun-2021 | 1015.34 | 1014.85 | -5.62 (-11.45) | -1.24 (+0.02) | 1.43 (-0.07) |
| 26-Jun-2021 | 1015.42 | 1013.30 | 5.83 | -1.26 | 1.50 |
Charts: 2021 | 2020 | 2019 | 2018 | 2017 | Source: The State of Queensland, Australia
| ENSO Wrap Up (Source: here) |
Issued on
SOI summary:
Sea surface temperature summary:
ENSO outlooks:
Last Accessed: Mon Jul 26 2021 03:19:54 HKT
Last Modified: Wed Jul 24 2019
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Statistics |
