Thomas Bay Tides Today
Near Kupreanof · Petersburg Borough, AK · NOAA 9451561
- High12:50AM14.2 ft
- Low6:42AM2.0 ft
- High12:59PM16.5 ft
- Low7:21PM-0.2 ft
Local Pacific time. Heights in feet above average low water (MLLW). Shaded bands are today's best fishing windows.
Fishing Outlook
The low tide at 7:21 PM lands near sunset, and the tides are among the strongest this week.
Best Windows Today
- 11:59 AM to 1:59 PMaround high tide
- 6:21 to 8:21 PMaround low tide
Solunar Times
- Minor5:49 to 6:49 AMmoonrise
- Major10:37 AM to 12:37 PMmoon overhead
- Minor4:08 to 5:08 PMmoonset
- Major10:59 PM to 12:59 AMmoon underfoot
Major periods are the two hours around the moon overhead or underfoot. Minor periods are the hour around moonrise and moonset.
Fishing Outlook
No tide change lands near sunrise or sunset, and the tides are among the strongest this week.
Best Windows Today
- 12:34 to 2:34 PMaround high tide
Solunar Times
- Minor7:14 to 8:14 AMmoonrise
- Major11:22 AM to 1:22 PMmoon overhead
- Minor4:15 to 5:15 PMmoonset
Major periods are the two hours around the moon overhead or underfoot. Minor periods are the hour around moonrise and moonset.
Fishing here? See Alaska fishing license info and sport fishing regulations from the Alaska Department of Fish and Game.
Weather and Wind
- TodayHigh 43°Rain 85% rainSE 10 to 15 mph
- TonightLow 34°Light rain likely 61% rainSE 5 to 10 mph
- SaturdayHigh 41°Light rain 91% rainE 5 to 10 mph
Boating Forecast
Frederick Sound · issued Fri 8:07 AM
- Today
- SE wind 30 kt diminishing to 20 kt in the afternoon. Seas 6 ft.
- Tonight
- SE wind 20 kt. Seas 4 ft.
- Sat
- SE wind 15 kt becoming NE 25 kt in the afternoon. Seas 4 ft. Rain in the afternoon.
From the National Weather Service. Arrows point the way the wind blows.
Next 7 Days
30 Day Tide Table| Day | Fishing | High Tides | Low Tides | Moon |
|---|---|---|---|---|
| SaturdayNov 7 | 1:37 AM 14.7 ft1:34 PM 17.1 ft | 7:23 AM 2.1 ft7:59 PM -1.1 ft | ||
| SundayNov 8 | 2:17 AM 15.1 ft2:07 PM 17.4 ft | 8:00 AM 2.3 ft8:35 PM -1.6 ft | ||
| MondayNov 9 | 2:55 AM 15.2 ft2:37 PM 17.4 ft | 8:34 AM 2.7 ft9:09 PM -1.7 ft | ||
| TuesdayNov 10 | 3:30 AM 15.1 ft3:06 PM 17.2 ft | 9:07 AM 3.2 ft9:42 PM -1.4 ft | ||
| WednesdayNov 11 | 4:04 AM 14.7 ft3:35 PM 16.8 ft | 9:40 AM 3.8 ft10:17 PM -0.8 ft | ||
| ThursdayNov 12 | 4:39 AM 14.2 ft4:05 PM 16.2 ft | 10:14 AM 4.5 ft10:53 PM -0.1 ft | ||
| FridayNov 13 | 5:15 AM 13.5 ft4:37 PM 15.4 ft | 10:50 AM 5.3 ft11:32 PM 0.8 ft |
About the Tides at Thomas Bay
Thomas Bay gets two high tides and two low tides most days, and they are not a matched pair. One high or one low each day is clearly bigger than the other. On a typical day the water rises and falls about 14.6 feet.
Over the next two weeks the biggest tides come on Monday, November 9, when the water moves about 19.1 feet. The lowest water is -1.7 ft on Monday, November 9 at 9:09 PM, and the highest is 17.4 ft on Monday, November 9 at 2:37 PM. A minus tide like that uncovers the most beach, flats and tide pools.
NOAA predicts the tides here from years of measurements at station 9451561.
Official NOAA prediction for station 9451561, Thomas Bay. Updated Fri, 06 Nov 2026 17:46 GMT.