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Location: Ludington, MI | What's the highest barometer reading you've seen where you caught a fish? Looking at this 30.45 and wondering if it's a sorting and sharpening day.
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| tundrawalker00 - 9/30/2017 8:19 AM
What's the highest barometer reading you've seen where you caught a fish? Looking at this 30.45 and wondering if it's a sorting and sharpening day.
Huh, just checked and that is exactly the reading at the weather service station at the Rhinelander airport. |
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| Can't catch them if your sitting at home. Had a day in late august this year that the pressure was at 30.28. My dad and I caught 8 fish and missed a few other ones. That is the highest pressure that I know of that I have caught fish.
Edited by Hansen1 9/30/2017 5:19 PM
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Location: Ludington, MI | That's pretty darn high. Woe is me. After I saw it was dropping this afternoon I had already agreed to grilling tonight. #*^@. |
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Location: Contrarian Island | have never had great fishing with a high barometer reading.. that said, if it is high but falling fast that can be good.. I've watched it this year more than others and seems I've had more bites when it's under 30
whoever posted the Intellicast site on here thanks, the barometer bar on it is pretty sweet.
Edited by BNelson 10/2/2017 8:52 AM
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Location: Chisholm, MN | BNelson - 10/2/2017 8:48 AM
have never had great fishing with a high barometer reading.. that said, if it is high but falling fast that can be good.. I've watched it this year more than others and seems I've had more bites when it's under 30
whoever posted the Intellicast site on here thanks, the barometer bar on it is pretty sweet.
You're welcome  |
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Location: SE, WI. | Not sure if I ever seen such a high Barometer the past 8 weeks. Check and watch barometer every outing. I'm sure it correlates with the lack of rain we had also, and the lack of bite going on. I know it's been a blood bath with Salmon on Michigan side of Lake Michigan. Charters are definately smiling on Michigan side!!! Lake Michigan here off Milwaukee had warm waters most of the summer do to all the NE,- SE winds.  JD |
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| My highest is 30.25 which was Saturday when it was falling.
It's a small sample size (98 fish), but this is what I've found...
29.60-29.69....3.1%
29.70-29.79....8.2%
29.80-29.89....23.5%
29.90-29.99....25.5%
30.00-30.09....33.7%
>30.10...........6.1%
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Location: Contrarian Island | how do your hours correspond to the data? ie, do you have 10, 25, or 50% etc of your hrs from 29.9 to 29.99? etc |
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| Unfortunately I don't track the conditions of fished hours that I don't catch fish. That is ultimately what someone would need to do so they can index the data to see if it there is a higher/lower rate of catching during certain conditions. My data is also from basically two lakes, and as we all know, different lakes react differently. |
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| My results are similar to jtmenard. More than 75% of my fish are <30 in Hg while fishing time is probably half under 30 and half over. |
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Location: Ludington, MI | Well, 30.16 won't be my number! |
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| https://www.youtube.com/watch?v=MbVk0tQBMz0
Edited by dickP 10/3/2017 7:23 AM
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Location: Contrarian Island | lots of interesting videos and research out on the ol interweb about the barometer.. this was interesting...
http://www.in-fisherman.com/bass/barometric-pressure-and-bass/ |
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| Have noticed on several occasions a dropping barometric pressure has turned them on. I would tend to agree with your finding that extremes seem to reduce activity. Unfortunately it's so pleasant to be on the water during those high pressure blue bird sky days. |
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Location: Minnesota | Yesterday must have been an anomaly, barometric pressure was 30.25+ and I saw fish on every structure and caught a couple. Granted most of the fish were adolescents, but it was great to see on a metro lake that many believe to be going down hill. |
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Location: Alex or Alek? | W8N4SNO - 10/5/2017 9:31 AM
Yesterday must have been an anomaly, barometric pressure was 30.25+ and I saw fish on every structure and caught a couple. Granted most of the fish were adolescents, but it was great to see on a metro lake that many believe to be going down hill.
I didn't check the barometer but I also saw 3 fish and missed one in 2 hours yesterday in west central mn |
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| W8N4SNO - 10/5/2017 9:31 AM
Yesterday must have been an anomaly, barometric pressure was 30.25+ and I saw fish on every structure and caught a couple. Granted most of the fish were adolescents, but it was great to see on a metro lake that many believe to be going down hill.
Fishing a metro lake yesterday and saw zero. |
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Location: Grand Rapids, MI | I believe any perceived inactivity has a lot more to do with light penetration than high air pressure since the two coincide. Anglers generally do what they want and not always what the fish want. I also believe fish that can regulate their swim bladder should have little impact from high air pressure.
Edited by Will Schultz 10/5/2017 12:21 PM
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Location: Green Bay, WI |
Interesting, but not very relevant to fishing...
That fellow pressured that container to about 50 psi. Normal atmospheric pressure is 14.7 psi, which corresponds to 29.92 in Hg at standard temperature and pressure (STP).
Consider: 50 / 14.7 = 3.401 atm (atmospheres)
Thus: 29.92 in Hg * 3.401 = 101.75 in Hg.
Therefore while the pressure in the OP's original post was higher than STP, it really isn't *that* much higher--certainly nowhere near the same magnitude as the pressure used in the demo shown in the YouTube video.
TB
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Location: Green Bay, WI | Will Schultz - 10/5/2017 12:20 PM
I believe any perceived inactivity has a lot more to do with light penetration than high air pressure since the two coincide. Anglers generally do what they want and not always what the fish want. I also believe fish that can regulate their swim bladder should have little impact from high air pressure.
Great thoughts--and I concur. When you do the math a pressure of 30.50 in Hg is only slightly above the standard pressure at sea level (29.92). And being that water is pretty much incompressible for the most part, it would take an extraordinary amount of pressure to have any meaningful effect on a fish's gas bladder.
Thus I've long-since given up the notion that rising or falling pressure has a direct effect on fish, in and of itself. Rather I think it has to do with the secondary atmospheric conditions that (often) accompany such barometric changes. And changing light is definitely a plausible theory IMHO.
EDIT: A sudden change in wind (over a short period of time) very well could also be responsible too, of course.
Will Schultz for the win.
TB
Edited by tcbetka 10/5/2017 8:27 PM
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| "Interesting, but not very relevant to fishing... "
Now that's interesting.IMO opinion wrong,yet interesting.Maybe 'relevant' doesn't mean what I thought it did.
The U tube was offered as a great,albeit simplified demo of the principle involved,not a factual comparison.Maybe I should no longer assume everyone understood that.
IMO to suggest barometric pressure is irrelevant is silly.Yes it's just one component of a post front situation involving a host of changes ranging from possible PH changes,oxygen changes,wind changes,possible metabolic changes due to water/air temps,etc but it's one of the few measurable,not speculative,factors involved.
No doubt the dreaded 'high' skies are significant.I've hated them for 50 years-spend years on trout water and anyone will develop that hatred.BUT,the 'high' part of that phrase refers to pressure,not that the skies lifted and got higher.I have many cloudless days annually with active fish.I have zero or near zero 'high' sky days with active fish.
Ignore 'pressure' if U want,I no longer argue these things so say what u want,I'll stick with my views and experiences.(note,spare me the articles comparing salt n fresh water-in fact spare me all the articles n studies as I'm sure I've read them.)
I'll take any moon phase vs facing a post front change anytime.Weather trumps(small case 't' not capital one)it all.
Good fishing to all!
Edited by dickP 10/6/2017 7:31 AM
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Location: Green Bay, WI | Well I'm not saying that I can *prove* it's irrelevant, because I can't. But it's my opinion that a change in barometric pressure will have VERY little effect on fish in the water column. Since the fish are in (essentially) incompressible water, how are they affected by a change in air pressure when it's only a few psi?
The point I was making about the relevance of the video was that his demonstration used a pressure that was massively higher than that seen in nature. His 50 psi setting, although it did indeed illustrate his point, is never going to be seen "in the wild." Your lungs and ear drums would burst. Therefore I believe that it's a mistake to think that there is a similar effect (to that balloon) on a fish in the water column--especially given that muskies are physostomes, and can easily vent their air bladder. And although I cannot prove it because I'm not aware of any talking muskies, my honest opinion is that it's more likely that the other climatic conditions accompanying the change in air pressure are more responsible for the change in activity of the fish.
We can agree to disagree, and that's fine. I've certainly got no problem with that. As long as we catch fish...it's all good.
TB
EDIT: Although not specific to muskellunge, here's an article on air pressure changes related to bass that helps explain my argument.
http://www.in-fisherman.com/bass/barometric-pressure-and-bass/
Note especially the discussion in the section Effects of Air Pressure On Fish. This is exactly my argument. You can make an argument that fish right at the air/water interface *might* be able to sense small changes in pressure, but (again) I don't know how we'd ever prove or disprove that conclusively--especially since relatively small movements vertically in the water column will likely have a much more significant effect on the fish's perception of "pressure changes" than any changes in air pressure. And the farther down in the water column the fish is located, the less significant any change in air pressure will be, compared to the weight of water in the column above the fish.
Edited by tcbetka 10/6/2017 10:06 AM
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| All good Tom.Agree to disagree.
Do U give any weight to low pressure?Imagine not.
Curious about your findings on those days where there are fish on every spot trying to stop your blades.Never has happened for me in high pressure. |
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Location: Contrarian Island | Tom, if you look above I already posted that... 
I agree there are many variables to when fish get active or are shut down...99 x out of 100 it seems the kiss of death is a post frontal blue bird sky day....those days your best shot typically comes right at sunset, and more than likely the only hit you'll get. We see muskies following our suckers around on those days... yah never good...
I don't really agree with the light penetration theory as there are plenty of big fish in my boat with sunny skies... the use of an underwater camera has shown me under some high skies/high pressure muskies are nose deep in the weeds and not budging... can you catch fish under crap conditions like high pressure/high skies... sure... but there are far more favorable conditions to hedge your bets on...
Edited by BNelson 10/6/2017 11:38 AM
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Location: Madison | There's a free app for iPhone, might be one for android too. It's just called "Barometer" and it uses your phone's built-in barometer. You can set a mark to show current reading just like physical barometers, and you can see a graph of past readings. Really shows when things are moving. |
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Location: Green Bay, WI | BNelson - 10/6/2017 11:36 AM
Tom, if you look above I already posted that...
I agree there are many variables to when fish get active or are shut down...99 x out of 100 it seems the kiss of death is a post frontal blue bird sky day....those days your best shot typically comes right at sunset, and more than likely the only hit you'll get. We see muskies following our suckers around on those days... yah never good...
I don't really agree with the light penetration theory as there are plenty of big fish in my boat with sunny skies... the use of an underwater camera has shown me under some high skies/high pressure muskies are nose deep in the weeds and not budging... can you catch fish under crap conditions like high pressure/high skies... sure... but there are far more favorable conditions to hedge your bets on...
Oops! I saw a couple of links go by in the various posts, but didn't recognize it. Sorry for the repeated link then. Sometimes it's easy to miss links in these threads, especially if/when there is quoted text in the post.
I thought it was an interesting article nonetheless, and agree with many of the points they mentioned there. I read a similar article on salt water fish (shallow species) a while back too, but can't seem to find it now. I'll keep looking.
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Location: Green Bay, WI | dickP - 10/6/2017 11:30 AM
All good Tom.Agree to disagree.
Do U give any weight to low pressure?Imagine not.
Curious about your findings on those days where there are fish on every spot trying to stop your blades.Never has happened for me in high pressure.
Sure--I think low pressure times are fine times to fish, but I think it's really about the environmental conditions that accompany (ie; result from) low pressure times: Overcast, lower light conditions, and (often) a change in wind conditions that result in a little chop on the water...thus giving the fish more confidence to become more active.
I agree with the article that BNelson and I linked to--I think those conditions make prey more vulnerable due to reduced visibility. Thus predators are more active. Basically, it's like dusk during the day.
Interesting enough, the biggest fish I've caught on Green Bay all seem to come during the day (8am - 3pm). Maybe that's because, at least in the lower bay, the fish need light to close in for the kill n that last few feet. Certainly they're using their lateral lines to vector themselves towards the prey, but my understanding is that they still rely on their vision to some degree to close the deal. I've read the "even a blind pike finds a perch" threads out there, and think that this is probably true--if the fish is going to survive, it must learn how to use the lateral line system through the entire feeding process. But I have to wonder how many blind pike/musky starved before they figured that out...LOL!
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Location: Green Bay, WI |
d'OH!
What can I say...I'm a moron.
TB
Edited by tcbetka 10/6/2017 2:37 PM
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Location: Ludington, MI | SUMUNUMBATCH! Pressure dropped a full tenth while I was fishing. Not a hundredth, a tenth. And did I catch any of the bass I saw? No. Not even a pike. Certainly not a muskie.
Edited by tundrawalker00 10/6/2017 6:30 PM
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Location: Northern Illinois | I really believe the relationship between barometric pressure and fish activity illustrates the difference between correlation and causation. Fish activity may not be caused by changing pressure but may be correlated to it. |
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Location: Green Bay, WI | RLSea - 10/6/2017 11:15 PM
I really believe the relationship between barometric pressure and fish activity illustrates the difference between correlation and causation. Fish activity may not be caused by changing pressure but may be correlated to it.
Bingo! No more calls folks, I think we have a winner.
TB |
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Location: Rhinelander, Wisconsin | For a number of years during the 70's and 80's my friend Jim Cairnes and I kept meticulous logs of every fish caught and used barograph records from the community colleges we taught classes for. We concluded that small 'ripples' combined with solunar activity periods were correlated to fish activity, that movement up or down was usually a good thing, and that the largest fish we caught were more usually than not dissociated with any data, including wind speed and direction, barograph readings, time of day, depth, etc. We were able to identify several factors that usually included fish activity, but never were able to predict a unknown 'big fish' would move. Lots of possibilities there as to why not, and most seemed to be random events. The capture of targeted big fish had more to do with time spent fishing for that particular fish than anything environmental we could identify, but targeting that fish under the correct subset was a definite positive. |
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Location: Green Bay, WI | In regards to changing atmospheric pressure, here's the thing...
In the water column, the effect of depth on pressure is MUCH more significant than the effect of changing air pressure. For every foot change in water depth, the pressure changes by about 0.43 psi in fresh water. Therefore if you change depth by about 34 feet, you've changed pressure by about one entire atmosphere. For air pressure at sea level there is about 14.7 psi of pressure, which corresponds to 29.92 inches of Mercury. So let's say now that the barometer increases to 30.92 in Hg, for the sake of argument. That's a change of about 0.49 psi, give or take.
(1/29.92) * 14.7 = 0.491
So the point is that for a significant change in barometric pressure (1 in Hg), a fish only has to move a little over 1 foot in depth to experience the same relative change in pressure. And that's assuming the fish is near the surface where any such change in barometric pressure would be more likely to be perceived by said fish. If the fish was 10-15 feet down for instance, the amount of hydrostatic pressure they perceive due to their depth may well overwhelm any such change in barometric pressure.
I realize that it's a hydraulics problem, but it's not a simple one. Air pressure applied to the surface of the water (a fluid) is equally distributed throughout the fluid in all directions. However it's not a perfect hydraulic system in that there are irregularities in the "tank" per se--e.g.; contours of depth interfere with pressure wave transmission; variations in bottom hardness result in more/less compliance of the tank, and therefore may not reflect pressure changes uniformly back into the water column; currents (and wind I suppose) apply opposing pressure waves to alter pressure changes imposed by barometric pressure from the atmosphere. It would seem that these things can all confound even distribution of pressure changes in an open system such as a lake.
Thus I can only conclude that the direct effect of atmospheric pressure changes on fish in a water column are likely very minimal, compared to the hydrostatic pressure changes those fish experience simply by moving up or down a small distance in the water column. Therefore it seems very likely that the environmental changes that accompany said barometric pressure changes (changing light, changing temperature, changing visibility due to wave action, etc) are more responsible for any increased or decreased activity levels in fishes. At least that's what my logic is telling me anyway...
TB |
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| I think the mystery behind post frontal high barometer fishing is little more than the fact that they all just ate yesterday ahead of and during the front. |
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Location: Rhinelander, Wisconsin | tcbetka - 10/7/2017 10:41 AM
In regards to changing atmospheric pressure, here's the thing...
In the water column, the effect of depth on pressure is MUCH more significant than the effect of changing air pressure. For every foot change in water depth, the pressure changes by about 0.43 psi in fresh water. Therefore if you change depth by about 34 feet, you've changed pressure by about one entire atmosphere. For air pressure at sea level there is about 14.7 psi of pressure, which corresponds to 29.92 inches of Mercury. So let's say now that the barometer increases to 30.92 in Hg, for the sake of argument. That's a change of about 0.49 psi, give or take.
(1/29.92) * 14.7 = 0.491
So the point is that for a significant change in barometric pressure (1 in Hg), a fish only has to move a little over 1 foot in depth to experience the same relative change in pressure. And that's assuming the fish is near the surface where any such change in barometric pressure would be more likely to be perceived by said fish. If the fish was 10-15 feet down for instance, the amount of hydrostatic pressure they perceive due to their depth may well overwhelm any such change in barometric pressure.
I realize that it's a hydraulics problem, but it's not a simple one. Air pressure applied to the surface of the water (a fluid) is equally distributed throughout the fluid in all directions. However it's not a perfect hydraulic system in that there are irregularities in the "tank" per se--e.g.; contours of depth interfere with pressure wave transmission; variations in bottom hardness result in more/less compliance of the tank, and therefore may not reflect pressure changes uniformly back into the water column; currents (and wind I suppose) apply opposing pressure waves to alter pressure changes imposed by barometric pressure from the atmosphere. It would seem that these things can all confound even distribution of pressure changes in an open system such as a lake.
Thus I can only conclude that the direct effect of atmospheric pressure changes on fish in a water column are likely very minimal, compared to the hydrostatic pressure changes those fish experience simply by moving up or down a small distance in the water column. Therefore it seems very likely that the environmental changes that accompany said barometric pressure changes (changing light, changing temperature, changing visibility due to wave action, etc) are more responsible for any increased or decreased activity levels in fishes. At least that's what my logic is telling me anyway...
TB
TB,
We compared hundreds of fish catch spikes during minimal but measurable barometer readings during both relatively stable and trending up/down conditions. The most interesting to me were the spikes during stable weather where mid day activity on sunny/cloudy days, regardless of wind direction or sunlight, correlated to minor but measurable changes up or down. The small changes usually lasted a half hour or so and would move back up or down to the mean line over a couple hours, and catch spikes were more prevalent during solunar events, using the Kinght Solunar book (There was no internet at the time) . The changes one would see above the water were minor wind shifts, for example going from S SE to SE then back the S SE again. Frequently surface activity would pick up, as did bird and shore critter activity.
We were never able to ascertain why fish react to those changes, but they do, even when lakes have 30" of ice.
Example: A high/cold/clear, Wisco NW winds post frontal, 6 tip ups, no action for two hours, wind shifts slightly to N (barometer rises a bit), action occurs, wind shifts back to NW (barometer drops back), action continues until wind shift is back to NW, then shuts down.
One comment, post cold frontal conditions seemed to have more effect on WHERE (one water body to another, and even on a single lake or river) the fish would be active, not IF, windows would be much shorter.
I've noticed the little changes really can have a short effect on the crappie bite, especially when they are suspended. Not a clue why.
Note: The barograph used paper charting. Old school all the way. |
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Location: Green Bay, WI | All interesting stuff--and I certainly can't explain the observations you made while ice fishing. In fact, one could argue that of all the anecdotal stuff being reported, ice fishing would seem to be LEAST susceptible to changes in barometric pressure. Curiosity here, but did you (or have you ever) notice that ice makes cracking noises more frequently when the barometer changes rapidly? I can't imagine that it would have an effect, but I've never paid attention to that aspect.
I think it basically boils down to this: It will be virtually impossible to prove a correlation between changing barometric pressure and fish activity, because it's virtually impossible to isolate the changing barometric pressure. It always seems to be accompanied by some other weather-based or environmental phenomenon. In medicine we used to call this sort of thing a "constellation of symptoms" (or signs), in that it usually wasn't just one thing that pointed to a diagnosis...but rather a grouping of (seemingly) related findings that helped you to figure it out.
TB
Edited by tcbetka 10/7/2017 1:40 PM
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Location: Rhinelander, Wisconsin | Ice cracking is mostly a rapid cooling issue. The little rises and drops I was referring to were quite small, and not accompanied by any visible changes in cloud cover or anything discernible than a slight temporary shift in wind direction. One of the barographs was very close to where Jimmy was fishing, and one was here in Rhinelander. |
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| Interesting note on barometer: This Saturday we had it down to 29.28 in Hg, which is the lowest (by far) I've ever fished through. really strange because it wasn't a storm or anything - just a little windy. In the fall it seems like the observable weather with respect to barometer is anomalous for some reason.
Fish were going pretty good through the day with the pressure tanking, but not crazy. |
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Location: Green Bay, WI | jaultman - 10/9/2017 7:32 AM
Interesting note on barometer: This Saturday we had it down to 29.28 in Hg, which is the lowest (by far) I've ever fished through. really strange because it wasn't a storm or anything - just a little windy. In the fall it seems like the observable weather with respect to barometer is anomalous for some reason.
Fish were going pretty good through the day with the pressure tanking, but not crazy.
What was the cloud cover where you were fishing, and (if you recall) what was the water temperature?
TB |
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| foggy in the morning, fog burned off mid-morning and it was sunny the rest of the day. We fished dawn til dusk with action spread out all day. Water temp started just over 48 and ended just over 52. cold night, small shallow lake.
barometer 29.5 at dawn, bottomed out at 29.28 mid afternoon, started rising. Typically those readings would coincide with a storm, but it was far from stormy. In any case, I continue to love falling and and bottomed out barometer.
Edited by jaultman 10/9/2017 9:19 AM
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Location: Green Bay, WI | jaultman - 10/9/2017 9:14 AM
foggy in the morning, fog burned off mid-morning and it was sunny the rest of the day. We fished dawn til dusk with action spread out all day. Water temp started just over 48 and ended just over 52. cold night, small shallow lake.
barometer 29.5 at dawn, bottomed out at 29.28 mid afternoon, started rising. Typically those readings would coincide with a storm, but it was far from stormy. In any case, I continue to love falling and and bottomed out barometer.
Great information, thanks for the report! This is an interesting topic for conversation--and one that warrants further study...even if it's just anecdotal reporting.
TB |
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Location: Ludington, MI | Unbelievably low water temps. We've been stalled at 65 or higher for two weeks. |
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Location: Ashland WI | tundrawalker00 - 10/9/2017 1:39 PM
Unbelievably low water temps. We've been stalled at 65 or higher for two weeks.
Yes. Where were you fishing Jaultman? |
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| small shallow lake, northern MN |
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Location: Rhinelander, Wisconsin | The Whitetails were all over the place this weekend after the storm passed through, out in the fields and moving several times from dawn to dusk on a rising barometer Sunday. My grandson Kaden shot a doe (dropped her with a perfect shot from his 7mm-08) during the youth hunt yesterday afternoon, pretty cool.
Saturday the rain was unreal up here so I worked in the office. I worked on getting ready for the Spring Bay Fall outing yesterday, should have been fishing.
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| jtmenard - 10/2/2017 1:37 PM
My highest is 30.25 which was Saturday when it was falling.
It's a small sample size (98 fish), but this is what I've found...
29.60-29.69....3.1%
29.70-29.79....8.2%
29.80-29.89....23.5%
29.90-29.99....25.5%
30.00-30.09....33.7%
>30.10...........6.1%
Are you switching tactics during different pressure readings? I understand if you don't wish to answer. |
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