I’ve been following two different tide locations for about 4 yrs now and there has always been a difference of about .3 ft higher on the more inshore area for the high tide (I fly fish on a flat and surf fish at beach).
Recently, I read the tides and the beach was as high or higher now (3 weeks later) or the tide is equal. I questioned the written prediction, but witnessed it first hand.
Does anyone really know what causes one area to increase/drecrease with no regard to wind.
Anyone have some links to good explantions?
thanks
My best guess would be the proximity of the moon to the earth. I heard that last week or the week before that the moon was the closest it has been to the earth in something like 200 years. I haven’t substantiated that claim yet. There is also the “supermoon” which I just found out about. I would also assume that has something to do with it. Here is the link
http://earthsky.org/tonight/is-biggest-and-closest-full-moon-on-june-23-2013-a-supermoon
A better understanding of tides and currents can be found here:
Narcosis
Better Link Narcosis…
http://tidesandcurrents.noaa.gov/
quote:
Originally posted by penfishn around every bend theres the promise of a treasure that can only be caught and seen in a blink.. and in your minds eye..and sometimes if youre lucky..in a picture..its there for just a minute...then gone..but hopefully once youve seen it it will remain in your heart forever. Theres nothing like the "Smell" and sounds of the creek. Its not just one thing that makes it familiar..its all of it.
Beach tide is the closest thing to the actual predicted tide.
Tidal river measurements have a multitude of other things that may impact the actual high/low tide measurements.
If you had rain recently, the level of the river prior to the tide, an upstream dam adjusting output, etc.
The ocean is not “flat”. What I mean is if it rains heavily in one area, there will be a “lump” or high point in the area until it all levels back out. Wind will also influence the tidal measurments.
Hurricanes can move several feet of water causing extreme high tides which usually leads to flooding. This flooding is a combination of rain, the moon, and wind.
another weird thing that I have run into while on the job diving was current vs tide range. I’ve been diving places in Alaska where there was about a 15 ft tide and hardly felt the current and on the other hand have been diving in South Florida with a range of around 1 ft and the tide was ripping. I guess that has to do more with the geomorphology and bathymetry than actual tidal range?
You can learn a lot by carefully monitoring and studying these charts
http://tidesonline.nos.noaa.gov/plotcomp.shtml?station_info=8665530+Charleston,+SC#
2000 SeaPro 180CC w/ Yammy 115 2 stroke
1966 13’ Boston Whaler w/ Merc 25 4 stroke “Flatty”
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barometric pressure has some effect in addition to wind. The lower the air pressure, the less resistance there is pushing down on the water, therefore the tides can be slightly higher. Combine low pressure and ne-se winds and you’ll see significantly higher water.
Its funny some places the current and water levels do two opposite things like like Biscayne bay and florida bay. The inside tides are 3hours later than the ocean side and only a very short distance apart. The current and water levels can be going opposite ways in one area and I’ve not researched the specifics, but its certainly puzzling. It was explained once and I remember something about a toilet bowl effect.