Meteorological Administration announces the time and location of this year's annual astronomical tides

The Meteorological Administration announced the time and location of this year's astronomical tides. (Provided by the Meteorological Administration)

The big wave of the year arrives next month! The Central Meteorological Administration reminded that there are four waves of annual astronomical tides this year. The first and second waves arrive in July and August. Residents in coastal areas are reminded to be vigilant and to pay attention to seawater intrusion and local flooding during high tides.

The Meteorological Administration explains that before and after the new moon and full moon, the sun, moon and earth are aligned in a straight line, and the gravitational effect is strong, resulting in higher high tide water levels and lower dry tide levels. This is called "spring tide". Annual spring tides refer to the period with the highest tide level in a year. They usually occur during the new moon or full moon before the autumnal equinox, or when the moon is at "perigee".

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The Meteorological Administration reminds that during high tides, seawater intrusion and local flooding in low-lying coastal areas are likely to occur. There are four annual spring tides in Taiwan this year. The first and second waves will be from July 13 to 17, and from August 11 to August 15, affecting the southwestern coast (Chiayi to Pingtung), the northeastern and eastern coasts (Keelung, New Taipei, Yilan to Taitung).

The Meteorological Administration pointed out that the third wave will affect the western coast (New Taipei to Changhua) and Penghu from September 26 to September 30; the last wave of this year is expected to be from October 26 to October 30, affecting the western coast (Yunlin), Kinmen, and Matsu.

The Meteorological Administration reminds that during these annual spring tides, the tide levels along Taiwan's coasts are generally high. Residents in low-lying coastal areas are advised to take protective measures to prevent seawater intrusion and pay attention to the latest weather and tidal dynamics at all times.

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