≈Tide & Marine Conditions
Tide & Marine ConditionsEvidence report · prepared 30 August 2026https://tide99.com/entity/8770475
NOAA station 8770475

TX

Port Arthur

Official tide predictions with the datum, units and time basis kept visible.

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DatumMLLWThe vertical reference for the published height
Time basislst_ldtRetained from the NOAA response
Coverage1039 predictions719 recent observations stored

Published location

Where is Port Arthur?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

29.866700, -93.930000

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Map data © OpenStreetMap contributors

Visual evidence

Next published tide heights

The chart visualises the values listed in the table below; it does not interpolate missing records.

2026-08-30 00:40: 0.1912026-08-30 06:58: 0.3452026-08-30 13:18: 0.1872026-08-30 19:34: 0.3412026-08-31 01:09: 0.2462026-08-31 07:07: 0.3532026-08-31 14:04: 0.1442026-08-31 21:04: 0.3452026-09-01 01:40: 0.3012026-09-01 07:13: 0.3642026-09-01 14:55: 0.1072026-09-01 22:36: 0.3542026-09-02 00:44: 0.352026-09-02 07:01: 0.3792026-08-30 00:402026-09-02 07:01

Plan the next water window

Next published high and low tides

Published timeEventHeight
2026-08-30 00:40Low0.191 m
2026-08-30 06:58High0.345 m
2026-08-30 13:18Low0.187 m
2026-08-30 19:34High0.341 m
2026-08-31 01:09Low0.246 m
2026-08-31 07:07High0.353 m

How to read this page

Predicted heights are astronomical estimates relative to MLLW. Weather, pressure, wind and river flow can move observed water away from the prediction.

For navigation or safety

This is a planning aid, not a navigational chart or warning service. Check NOAA notices, local conditions and official marine guidance before acting.

Source, identifiers and limitations
Station ID
8770475
Source
NOAA CO-OPS Data API
Prediction datum
MLLW
Time basis
lst_ldt

Read the full source and methodology record