barometric pressure.....???? 2024
shovelmouth83 reply :
https://www.arkansasstripers.com/how-does-barometric-pressure-affect-fishing.htm?fbclid=IwAR08KsR4hNNtJ_hDDp_D1g4xw-27evm0RlE1H4ewhNxtnrJvITYoVTcwsW0
so i was browsing face book and i came acroos this i have not seen any info like this it has opened my eyes a lot. just let me know how it has helped or if you knew already.
tight lines......
Brad Reid reply :
Barometric Pressure has absolutely zero direct effect on bass. Zero. Even a large swing of a full point, say 29.50 to 30.50, on pressure readings means a fish has to make the tiniest of depth adjustments to offset the change.
Bass and other fish swim around all day at various depths, up and down, up and down, deep to shallow and back, to degrees that far, far exceed the tiny differences in atmospheric pressure pushing down on water. There is a column of air 60 or so miles in size to create 1 atmosphere of pressure at sea level. Water? 33 +/- feet to add a second atmosphere.
What it (atmospheric pressure) does do is reflect what weather patterns we see, what we are in. Here, we do know, emphatically, that fishing changes with clear skies versus cloudy/gloamy days, windy days versus dead air days, cold days versus warm days and more, that these do affect fish behavior.
I'll share the math of the actual distance a fish has to "adjust" in the water column to offset a particular quantity of added air pressure if anyone wants to see it.
Brad
shovelmouth83 reply :
that would be awesome.
Team9nine reply :
The old barometer debate ???? Believe the math works out to about 16" or so in extreme examples, less than half that under normal pressure changes.
Let's get ready to rummmm-bleeeeee 
Brad Reid reply :
I should be less "strident" about it; it just hurts to see it over and over. But, the original post was in good faith. It is a common topic. I have even read articles by scientists whom should know better and yet they give it credence, but they just haven't done the math or don't understand the logic.
Stats:
Barometric Pressures and equivalent related water depths in "feet of water":
29.50 = 33.422'
29.92 = 33.898' (one atmosphere)
30.00 = 33.989'
30.50 = 34.555'
As you stand on the edge of a pool, you are standing in 1 atmosphere of pressure, all from air. It is about 14 lbs. per sq. inch. or so pressing in on you. If you dive into the pool and swim down a little over 33 feet, the water has added another "atmosphere" of pressure, this from water. You are now experiencing 2 atmospheres of pressure: one from the air, another one from the water. Almost all people feel a huge amount of pressure in their ears, even at lesser depths.
Water is not very "compressible," so the added pressure is very linear. A one point move up in air pressure can be offset by moving up in the water column by 1.13 feet.
Bass cover more vertical distance than this . . . all day long. Barometric Pressure readings don't move all that fast except in rare circumstances. Even then, it wouldn't make any difference.
Here's the issue: how does a bass "differentiate" the pressure it experiences from a high pressure system moving in and, say, raising pressure from 29.50 to 30.50 pushing down on water . . . from the pressures a fish experiences all day long just swimming around?
It has always been about the weather.
Brad
MassYak85 reply :
Let's think about this:
Let's say a HUGE atmospheric pressure change happens (1 inch of mercury atm pressure change --> About 0.5 PSI). That same pressure change would only require the fish to move vertically in the water column about a foot to feel the same pressure change. In essence unless the fish is completely motionless in the water for days at a time they aren't going to notice atmospheric pressure changes since it pales in comparison to depth changes.
I only pay attention to it in terms of how it relates to changes in weather. Often a sharp barometric pressure change can mean a front is moving through which can issue in changes in temperature, rain/storms/wind, or light levels (clouds). Those things are tangible environmental changes to the fish. Barometric pressure changes probably aren't...unless that fish has literally been sitting
soflabasser reply :
I have noticed that I have done better than average when the barometric pressure is dropping, both in freshwater and saltwater fishing.
islandbass reply :
On 10/13/2018 at 4:23 AM, Brad Reid said:Barometric Pressure has absolutely zero direct effect on bass. Zero. Even a large swing of a full point, say 29.50 to 30.50, on pressure readings means a fish has to make the tiniest of depth adjustments to offset the change.
Bass and other fish swim around all day at various depths, up and down, up and down, deep to shallow and back, to degrees that far, far exceed the tiny differences in atmospheric pressure pushing down on water. There is a column of air 60 or so miles in size to create 1 atmosphere of pressure at sea level. Water? 33 +/- feet to add a second atmosphere.
What it (atmospheric pressure) does do is reflect what weather patterns we see, what we are in. Here, we do know, emphatically, that fishing changes with clear skies versus cloudy/gloamy days, windy days versus dead air days, cold days versus warm days and more, that these do affect fish behavior.
I'll share the math of the actual distance a fish has to "adjust" in the water column to offset a particular quantity of added air pressure if anyone wants to see it.
Brad
Awesome! I’ll be looking for to seeing the figures. Me likes math, lol.
Update: I posted before seeing your next post. Thanks !
Catt reply :
Threads on temperature + barometric pressure = winter ????
Brad Reid reply :
On 10/13/2018 at 11:18 AM, MassYak85 said:Let's think about this:
Let's say a HUGE atmospheric pressure change happens (1 inch of mercury atm pressure change --> About 0.5 PSI). That same pressure change would only require the fish to move vertically in the water column about a foot to feel the same pressure change. In essence unless the fish is completely motionless in the water for days at a time they aren't going to notice atmospheric pressure changes since it pales in comparison to depth changes.
I only pay attention to it in terms of how it relates to changes in weather. Often a sharp barometric pressure change can mean a front is moving through which can issue in changes in temperature, rain/storms/wind, or light levels (clouds). Those things are tangible environmental changes to the fish. Barometric pressure changes probably aren't...unless that fish has literally been sitting
Sure, MassYak85 has it right. It isn't even remotely possible that a bass can "differentiate" from the pressure variances it feels . . . all day long, day in and day out . . . just living its normal life, from pressure changes from air pressing down on water. In both cases, by the depth it finds itself in, or from air pressure forces, it has to make the slightest of depth changes to get comfortable.
It is all about the weather changes that accompany changes in air pressure. Brad
greentrout reply :
scaleface reply :
I have no idea how barometric pressure effects fish and have never consulted it .
813basstard reply :
The pressure you feel when you got drunk and watched the game over washing the cars.
Team9nine reply :
"One of the most persistent myths in fishing is that barometric pressure controls the activity of bass and other gamefish. Although many researchers have tried, scientific studies have been unable to demonstrate that such a relationship exists. Every scientific report we’ve seen, in which barometric pressure was studied, reached a similar conclusion: no direct relationship is evident."
-Ralph Manns
For the full story, see: IF - Barometric pressure and bass
Josh Alwine came to a similar conclusion in his recent book (Lunker Lore) after statistical analysis of another set of data:
"What the findings indicate first and foremost is that a great many fish are caught across the full spectrum of barometric pressure...stability in weather has far greater impact on catch rates than any normal changes in weather."
What is always interesting to me is that the scientific side of the argument says no effect, while it is well noted that most recognized big fish experts (and many other local experts) are convinced there is one (an effect).
Scott F reply :
On 10/14/2018 at 1:23 AM, Team9nine said:What is always interesting to me is that the scientific side of the argument says no effect, while it is well noted that most recognized big fish experts (and many other local experts) are convinced there is one (an effect).
You could say exactly the same thing about moon phases.
soflabasser reply :
On 10/14/2018 at 1:23 AM, Team9nine said:What is always interesting to me is that the scientific side of the argument says no effect, while it is well noted that most recognized big fish experts (and many other local experts) are convinced there is one (an effect).
I will pay more attention to the big fish experts than pay attention to the scientist when it comes to catching big fish.Knowing the biology of bass does help but it does not compare to someone who has lots of experience catching lots of big bass in a particular body of water. With that said I have noticed better than average bass fishing and saltwater fishing when the barometric pressure is dropping. Also noticed the bass biting better during certain moon phases in specific times in the year. But what do I know, I have only caught a couple double digit bass and lost count of the 8 pound or better largemouth bass I have caught in the +2 decades I have fished for bass.
shovelmouth83 reply :
On 10/14/2018 at 2:17 AM, Scott F said:You could say exactly the same thing about moon phases.
i dont even want to start that one.. ????
TnRiver46 reply :
I know, for a fact, without a shadow of a doubt ........
that I have a pretty cool barometer that was my
grandparents . That is all.
Tennessee Boy reply :
Barometric pressure affects bass because they don’t have eye lids.....no wait I think I’m getting my fishing myths confused.????
Catt reply :
On 10/14/2018 at 1:23 AM, Team9nine said:stability in weather has far greater impact on catch rates than any normal changes in weather."
I don't care what the ambient temperatures are, I don't care what the barometric pressure is doing, I don't care what moon phase it is, I don't care what season it is.
Give me three days of stable (unchanging) weather & it's on!
greentrout reply :
Farmer's Almanac...
https://www.farmersalmanac.com/fishing-weather-time-26873
good fishing...
MIbassyaker reply :
On 10/14/2018 at 3:35 AM, soflabasser said:I will pay more attention to the big fish experts than pay attention to the scientist when it comes to catching big fish.Knowing the biology of bass does help but it does not compare to someone who has lots of experience catching lots of big bass in a particular body of water. With that said I have noticed better than average bass fishing and saltwater fishing when the barometric pressure is dropping. Also noticed the bass biting better during certain moon phases in specific times in the year. But what do I know, I have only caught a couple double digit bass and lost count of the 8 pound or better largemouth bass I have caught in the +2 decades I have fished for bass.
Suit yourself, but bass do not break the laws of physics.
Catt reply :
On 10/15/2018 at 2:10 AM, MIbassyaker said:
Suit yourself, but bass do not break the laws of physics.
Don't know a single bass that has ever attended a physics class!
Physics is the natural science that studies matter and its motion and behavior through space and time and that studies the related entities of energy and force.
Ya might wanna use a different word ????
WRB reply :
After years of some practical experiences I came to the conclusion barametic pressure affects me more them it does fish. Falling barametic pressure indicates a low pressure system is approaching with wind rotation counter clockwise bring clouds and possible rain, temperatures usually drop. All this is happening above water in the atmosphere where we live, not below the water where fish live. Lower light conditions give predator fish like bass the advantage over prey and they take advantage.
Rising barametric pressure means high pressure system with wind rotating clockwise is pushing the low pressure system away, bringing wind in the opposite direction and clear bright sunlight, again above the water. Predator fish feed during the low light low pressure system and now have bright light and changing winds, no reason to be active.
Me on the other hand the changing pressures affects my bones and wind with bright sun affects my desire to go fishing.
Tom
TnRiver46 reply :
On 10/15/2018 at 4:43 AM, WRB said:After years of some practical experiences I came to the conclusion barametic pressure affects me more them it does fish. Falling barametic pressure indicates a low pressure system is approaching with wind rotation counter clockwise bring clouds and possible rain, temperatures usually drop. All this is happening above water in the atmosphere where we live, not below the water where fish live. Lower light conditions give predator fish like bass the advantage over prey and they take advantage.
Rising barametric pressure means high pressure system with wind rotating clockwise is pushing the low pressure system away, bringing wind in the opposite direction and clear bright sunlight, again above the water. Predator fish feed during the low light low pressure system and now have bright light and changing winds, no reason to be active.
Me on the other hand the changing pressures affects my bones and wind with bright sun affects my desire to go fishing.
Tom
You mean to tell me there are low pressure systems in SoCal? Once or twice a year, maybe? Haha
WRB reply :
On 10/15/2018 at 4:52 AM, TnRiver46 said:You mean to tell me there are low pressure systems in SoCal? Once or twice a year, maybe? Haha
It maybe hard to believe but we get low/high pressure systems weekly during the spring and fall. This year more hurricanes formed in the Pacific Ocean then the Altantic Ocean and have a direct impact on our weather, just no rain to speak of. With the southern humbolt and northen artic currents comming together in mid California, pressure systems are continuos, the high pressure systems bring Santana winds out the NE @ 50-70 mph following cloudy low pressures systems.
Always hoping for rain.
Tom
shovelmouth83 reply :
yeah i know what you mean. i was born in California in the bay area, and transplanted here in Arkansas. i noticed the pressurediffrence when fishing in mt shasta and then going back to the bay area. it was two different worlds.
TnRiver46 reply :
On 10/15/2018 at 5:04 AM, WRB said:It maybe hard to believe but we get low/high pressure systems weekly during the spring and fall. This year more hurricanes formed in the Pacific Ocean then the Altantic Ocean and have a direct impact on our weather, just no rain to speak of. With the southern humbolt and northen artic currents comming together in mid California, pressure systems are continuos, the high pressure systems bring Santana winds out the NE @ 50-70 mph following cloudy low pressures systems.
Always hoping for rain.
Tom
Here’s hoping! Sounds like an interesting climate to say the least
TnRiver46 reply :
On 10/15/2018 at 5:08 AM, shovelmouth83 said:yeah i know what you mean. i was born in California in the bay area, and transplanted here in Arkansas. i noticed the pressurediffrence when fishing in mt shasta and then going back to the bay area. it was two different worlds.
Arkansas....... I’m very familiar with the weather there, I get it 1.5 days later....... weeeettttt. Half of that state is underwater !
Brad Reid reply :
Again, fish behavior has nothing to do "directly" with air pressure; it's all about what the pressure is measuring: weather.
I thought it might be interesting to post a chart showing where I live, Lake Athens, TX, for the whole year of 2018 so far. Heck, since January 1, we have only seen barometric pressure readings ranging from a high of 30.80 to a low of 29.57.
What one will see on the chart is how much larger the swings are in the pressure readings from January to around May. Temps way up and down, wind directions moving from north to south and wind velocities altering greatly. More rainy weather, too. Then, over summer, temps are more predictably and statically hot, winds out of the south dominate in the summer, less rain and "rainy-like" conditions.
Brad
Mobasser reply :
On 10/14/2018 at 9:52 PM, Catt said:
I don't care what the ambient temperatures are, I don't care what the barometric pressure is doing, I don't care what moon phase it is, I don't care what season it is.
Give me three days of stable (unchanging) weather & it's on!
This is what I realized at some point also. Started out worrying about all the different factors, but realized that 3 days of steady weather produce the best fishing. Now, I just go fishing- don't really give a hoot about moon, barometer etc.
"hamma" reply :
Umm,. Yeah,. About this? Experience has taught me that the barometer changing does effect bass , when it's not changing is prime, but a sharp change has shut the bite down on me more than a dozen times like a switch. My reaction? Of course only after exhausting a grub for a while, Leave the lake or pond,.. for a flowing river. Rivers seem to eliminate, or should I say buffer the effects. So many times has this panned out for me I now automaticly do it ,..as long as the day has enough left in it. Typical summer senario, may invlove moisture, but that's just part of the deal
Brad Reid reply :
On 10/15/2018 at 11:17 PM, "hamma" said:Umm,. Yeah,. About this? Experience has taught me that the barometer changing does effect bass , when it's not changing is prime, but a sharp change has shut the bite down on me more than a dozen times like a switch. My reaction? Of course only after exhausting a grub for a while, Leave the lake or pond,.. for a flowing river. Rivers seem to eliminate, or should I say buffer the effects. So many times has this panned out for me I now automaticly do it ,..as long as the day has enough left in it. Typical summer senario, may invlove moisture, but that's just part of the deal
Good observations that I'd still assign to weather.
Curious in this regard, when you were out on the water fishing, then your barometer experienced a sharp change (it can happen at times), what was happening around you weather-wise? Increase in wind, cloud cover, temps, other?
I guess I should add that high and low pressure readings can be "relative." You might have a 30.50 reading on your lake and still be the lowest in the region, that sort of thing.
High pressure most often means "holding things out" and prevented from coming in. So, every hot summer with dead air and clear skies, the weatherman says "We have a high pressure system sitting on top of us and no chance of any clouds or rain coming in." In other words, high pressure is analogous to the air inside a balloon: if you puncture it, the air move out, doesn't let air in.
So, fish are very susceptible to weather conditions, no doubt. Not so much to pressure changes in the water column that can be offset by the tiniest of adjustments. Brad
"hamma" reply :
Lol ,...I live in New England, fronts moving in usually means some sort of "change" occurs. Even the daily summer convection creates change here , Mt Washington's proximity to the altantic makes for some of the funkiest weather, Sometimes stalling a front for long periods , or ripping several thru in a day.so, I look at it like this,. The fish didn't educate themselves. They are there, I just need to figure them out no matter what's happening,...When a front rolls thru and they shut down? I go to the river ,..it's simple. B does it happen every front? No
But it does, and I just react when I realize they are done biting
So y'all can tout this or that. Don't make much nevermind to me,. When a 3 inch grub doesn't receive even a sniff? They are pretty much done dining for the day. I'm either heading home, or to some current.
related General Bass Fishing Forum topic
previous topic
next topic
most viewed General Bass Fishing Forum topic
© 2024 - fishing.qciss.net. All Rights Reserved.