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The Ghost of Christmas Future visits Fort Point Channel

By adamg on Sat, 12/22/2018 - 12:17pm
Flooding along Fort Point Channel

Justin Teman took a walk along Fort Point Channel this morning, at least, the part that wasn't flooded.

In October, the city released a plan to protect South Boston from an anticipated 3 1/2-food rise in Boston Harbor levels by 2070 that would include raising the Harborwalk along the channel and creating new berms to hold back some of the water and new, terraced fields that could absorb flood waters - and could double as parkland on drier days.

A future Fort Point Channel under city proposal:

Proposed modified Fort Point Channel
Neighborhoods: 
Downtown
South Boston
Topics: 
Weather
Free tagging: 
Rain
Boston Harbor
Fort Point Channel


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Comments

By Beanzzz on Sun, 12/23/2018 - 7:48am.

Happen every year.

Today's Boston (Boston Harbor) tides for Sunday, December 23, 2018. Sun 7:11am-4:15pm. low tide 4:58am (-0.48ft), high tide 11:09am (11.81ft), low tide 5:36pm (-1.78ft), high tide 11:48pm (10.30ft)

And for 2019:

Thursday, December 19, 2019. Sun 7:08am-4:13pm. high tide 4:35am (9.80ft), low tide 10:43am (0.44ft), high tide 4:55pm (9.97ft), low tide 11:13pm (-0.19ft)
...

Thursday, December 26, 2019. Sun 7:12am-4:17pm. low tide 4:41am (0.03ft), high tide 10:56am (11.18ft), low tide 5:20pm (-1.07ft), high tide 11:36pm (9.69ft)

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By tedpk on Wed, 12/26/2018 - 4:53pm.

Indeed!!

If you had set-up a tide gauge at say Summer Street Bridge when those bridges were brand new [circa 100 years ago] -- you couldn't have noticed the difference from this years Christmas High Tide in any meaningful way

There is enough complexity in the system [Earth Moon, Sun] to make each "Astronomical High Tide" every month different --- any trend over a human lifetime is lost in the "measurement noise"

Throw in variations in the atmosphere due to the weather -- such as local wind and local barometric pressure -- "Fagettaboutit"!!

All you need to know for practical purposes is that the difference is low and high tide daily in Boston is approximately 10 feet *1

The rest is pure and simple "JUNK Science" of the Worst Kind

*1 The variation on the theme is about another foot --- with a bit more or less depending on the phase of the moon, distance of the moon from the earth, distance of the earth from the sun, etc.

Tides at Boston Light, Boston Harbor, Massachusetts
42.3283° N, 70.8917° W
from
http://tides.mobilegeographics.com/locations/679.html?y=2010&m=12&d=21

Boston Light Christmas Tides over about a human lifespan [with nearest lunar phase]*2
looking back to the earliest available on the website and forward to the latest available

1970
1970-12-25 Fri 2:04 AM EST 1.5 feet Low Tide
1970-12-25 Fri 7:11 AM EST Sunrise
1970-12-25 Fri 8:18 AM EST 9.2 feet High Tide
1970-12-25 Fri 2:47 PM EST 0.6 feet Low Tide
1970-12-25 Fri 4:16 PM EST Sunset
1970-12-25 Fri 8:58 PM EST 7.9 feet High Tide
....
1970-12-28 Mon 5:42 AM EST New Moon

1980
1980-12-25 Thu 1:29 AM EST 9.4 feet High Tide
1980-12-25 Thu 7:11 AM EST Sunrise
1980-12-25 Thu 7:26 AM EST 0.2 feet Low Tide
1980-12-25 Thu 1:38 PM EST 10.2 feet High Tide
1980-12-25 Thu 4:16 PM EST Sunset
1980-12-25 Thu 8:02 PM EST -0.6 feet Low Tide
...
1980-12-29 Mon 1:32 AM EST Last Quarter

1990
1990-12-24 Mon 10:16 PM EST First Quarter
....
1990-12-25 Tue 4:39 AM EST 9.0 feet High Tide
1990-12-25 Tue 7:11 AM EST Sunrise
1990-12-25 Tue 10:56 AM EST 0.9 feet Low Tide
1990-12-25 Tue 4:16 PM EST Sunset
1990-12-25 Tue 5:01 PM EST 8.5 feet High Tide
1990-12-25 Tue 11:15 PM EST 0.6 feet Low Tide

2000
2000-12-25 Mon 4:35 AM EST 0.8 feet Low Tide
2000-12-25 Mon 7:11 AM EST Sunrise
2000-12-25 Mon 10:49 AM EST 9.8 feet High Tide
2000-12-25 Mon 12:23 PM EST New Moon
2000-12-25 Mon 4:16 PM EST Sunset
2000-12-25 Mon 5:13 PM EST -0.2 feet Low Tide
2000-12-25 Mon 11:26 PM EST 8.6 feet High Tide

2010
2010-12-21 Tue 3:15 AM EST Full Moon
....
2010-12-25 Sat 1:45 AM EST 9.4 feet High Tide
2010-12-25 Sat 7:11 AM EST Sunrise
2010-12-25 Sat 7:48 AM EST 0.0 feet Low Tide
2010-12-25 Sat 1:57 PM EST 10.3 feet High Tide
2010-12-25 Sat 4:16 PM EST Sunset
2010-12-25 Sat 8:20 PM EST -0.9 feet Low Tide

2015
2015-12-25 Fri 4:23 AM EST -0.3 feet Low Tide
2015-12-25 Fri 6:11 AM EST Full Moon
2015-12-25 Fri 7:10 AM EST Sunrise
2015-12-25 Fri 10:38 AM EST 11.0 feet High Tide
2015-12-25 Fri 4:16 PM EST Sunset
2015-12-25 Fri 5:03 PM EST -1.3 feet Low Tide
2015-12-25 Fri 11:17 PM EST 9.6 feet High Tide

2016
2016-12-25 Sun 2:04 AM EST 1.2 feet Low Tide
2016-12-25 Sun 7:11 AM EST Sunrise
2016-12-25 Sun 8:24 AM EST 9.0 feet High Tide
2016-12-25 Sun 2:44 PM EST 0.8 feet Low Tide
2016-12-25 Sun 4:16 PM EST Sunset
2016-12-25 Sun 8:56 PM EST 8.2 feet High Tide
....
2016-12-29 Thu 1:54 AM EST New Moon

2017
2017-12-25 Mon 3:51 AM EST 8.5 feet High Tide
2017-12-25 Mon 7:11 AM EST Sunrise
2017-12-25 Mon 9:57 AM EST 1.3 feet Low Tide
2017-12-25 Mon 4:03 PM EST 8.7 feet High Tide
2017-12-25 Mon 4:16 PM EST Sunset
2017-12-25 Mon 10:23 PM EST 0.6 feet Low Tide
2017-12-26 Tue 4:20 AM EST First Quarter

2018
2018-12-25 Tue 12:41 AM EST 9.8 feet High Tide
2018-12-25 Tue 6:42 AM EST -0.5 feet Low Tide
2018-12-25 Tue 7:11 AM EST Sunrise
2018-12-25 Tue 12:52 PM EST 11.2 feet High Tide
2018-12-25 Tue 4:16 PM EST Sunset
2018-12-25 Tue 7:20 PM EST -1.6 feet Low Tide
...
2018-12-29 Sat 4:36 AM EST Last Quarter

2019
2019-12-25 Wed 3:55 AM EST 0.1 feet Low Tide
2019-12-25 Wed 7:10 AM EST Sunrise
2019-12-25 Wed 10:10 AM EST 10.6 feet High Tide
2019-12-25 Wed 4:16 PM EST Sunset
2019-12-25 Wed 4:36 PM EST -1.0 feet Low Tide
2019-12-25 Wed 10:50 PM EST 9.2 feet High Tide
2019-12-26 Thu 12:15 AM EST New Moon

2020
2020-12-21 Mon 6:42 PM EST First Quarter
......
2020-12-25 Fri 1:22 AM EST 1.4 feet Low Tide
2020-12-25 Fri 7:11 AM EST Sunrise
2020-12-25 Fri 7:42 AM EST 8.7 feet High Tide
2020-12-25 Fri 2:02 PM EST 1.1 feet Low Tide
2020-12-25 Fri 4:16 PM EST Sunset
2020-12-25 Fri 8:12 PM EST 8.0 feet High Tide
.....
2020-12-29 Tue 10:30 PM EST Full Moon

2021
2021-12-25 Sat 3:16 AM EST 8.3 feet High Tide
2021-12-25 Sat 7:11 AM EST Sunrise
2021-12-25 Sat 9:17 AM EST 1.4 feet Low Tide
2021-12-25 Sat 3:24 PM EST 8.8 feet High Tide
2021-12-25 Sat 4:16 PM EST Sunset
2021-12-25 Sat 9:47 PM EST 0.5 feet Low Tide
...
2021-12-26 Sun 9:26 PM EST Last Quarter

2025
2025-12-25 Thu 2:35 AM EST 8.4 feet High Tide
2025-12-25 Thu 7:11 AM EST Sunrise
2025-12-25 Thu 8:34 AM EST 1.2 feet Low Tide
2025-12-25 Thu 2:41 PM EST 9.1 feet High Tide
2025-12-25 Thu 4:16 PM EST Sunset
2025-12-25 Thu 9:05 PM EST 0.3 feet Low Tide
.......
2025-12-27 Sat 2:10 PM EST First Quarter

2030
2030-12-24 Tue 12:33 PM EST New Moon
....
2030-12-25 Wed 4:51 AM EST -0.7 feet Low Tide
2030-12-25 Wed 7:11 AM EST Sunrise
2030-12-25 Wed 11:03 AM EST 11.6 feet High Tide
2030-12-25 Wed 4:16 PM EST Sunset
2030-12-25 Wed 5:32 PM EST -1.9 feet Low Tide
2030-12-25 Wed 11:44 PM EST 10.0 feet High Tide

2037 [last available date]
2037-12-22 Tue 8:41 AM EST Full Moon
....
2037-12-25 Fri 12:50 AM EST 9.0 feet High Tide
2037-12-25 Fri 6:49 AM EST 0.3 feet Low Tide
2037-12-25 Fri 7:11 AM EST Sunrise
2037-12-25 Fri 12:56 PM EST 10.3 feet High Tide
2037-12-25 Fri 4:16 PM EST Sunset
2037-12-25 Fri 7:24 PM EST -0.8 feet Low Tide

*2 Note that over 70 years a tide record in the inner harbor is more variable due to recent river flows as well as semi permanent changes in the bottom due to filling and dredging activities associated with construction on the shore and with piers

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