June 28, 173 Tsunami: Laizhou Bay, Bohai Sea, China
A tsunami caused by an earthquake began at Laizhou Bay, Bohai Sea, China on June 28, 173. Its effects were recorded at 3 places.
Where the waves reached
The source (white) and every runup with a place, colored by the water height recorded there. A ring is a runup NCEI marks doubtful.
- Under 1 m
- 1 to 3 m
- 3 to 10 m
- 10 to 30 m
- 30 m and more
- Height not recorded
The tsunami
- Date
- June 28, 173
- Source
- Laizhou Bay, Bohai Sea, China
- Cause
- Earthquake
- Earthquake
- The earthquake
- Runups recorded
- 3
- Tsunami intensity (Soloviev-Imamura)
- 1
- Tsunami magnitude (Iida)
- 1
- Waters
- Ocean
- How certain
- Questionable tsunami
- Source location
- 37.500° N, 120.000° E
The toll
The record gives no deaths, injuries or damage for this tsunami.
What the record says
NCEI’s account, from the sources it cites.
Reference #414:
173, June 28 - July 27, event validity 2. In China, there was an earthquake (37.5 N, 120 E) in the region of Poltai Bay. A sea flood in Laichou Bay off the Shantung Peninsula was observed in three regions: Huangxian, Yehsian and Chanyi.
Reference #150:
173, June 28, event validity 3. PoHai, China. Laichon Bay tsunami.
Reference #93:
173, June 27 - July 26. Offshore of County, Huang, Shandong Province, event validity low.
Reference #12988:
Yellow Sea (37.5N, 120E) earthquake triggered tsunami; Beihai Sea earthquake, Donglai and Beihai Sea overflowed. (Emperor Ling history in the History of the Later Han Dynasty)
Reference #12989:
173, July.
Reference #549:
173, 27 June - 26 July. Offshore of Huang, Shandong Province.
Every runup
Nearest the source first. Heights are above sea level at the time; a tide gauge reads half the wave’s full height.
| Where | Country | Km from source | Water height, m | Inland, m | Measured by | First wave, UTC | Deaths |
|---|---|---|---|---|---|---|---|
| Yehsian, Shandong | China | 37 | Eyewitness observation of water height | ||||
| Huangxian, Shandong | China | 49 | Eyewitness observation of water height | ||||
| Chanyi, Shandong | China | 90 | Eyewitness observation of water height |
More
Every tsunami in 173The 100sTsunamis of ChinaThe earthquakeThis day in weather historyAlerts in force
Sources
Tsunami events and runups from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. NCEI tsunami event 29.