Can large and strong hurricanes influence their own steering

[piggy]

Can large and strong hurricanes influence their own steering? I have
heard this discussed. How does this happen?

[Recurve]

Can only give an amateur answer: A hurricane can "pump up" a high with its outflow, strengthening a high to the north for example that is steering the storm, preventing it from going poleward which it would normally want to do.

In general, storms are steered by upper level winds. The winds are clockwise around a high. With a weak high to the north, the storm may move slowly and drift northward. With a stronger high it will be directed more westward around the southern periphery of the high.

As I understand it, even a strong hurricane can't really influence a strong ULL, trough or front.

Pros please correct this if it's a bad explanation.

[HurricaneGirl]

I've often wondered the same thing. like Recurve pointed out, the upper level steering currents or lack of steering currents make those crazy loops storms do sometimes like Jeanne a couple years ago.

[Jim Cantore]

I believe last year that Katrina shoved the jet stream out of the way.

[f5]

I believe last year that Katrina shoved the jet stream out of the way.

Katrina was huge at one point she used the jet stream to help her outflow

[WindRunner]

All of the effects described so far are those caused by strong hurricane that just so happened to be large. A large system like this will not "control" its environment at this stage of the game. If a storm of any decent size or larger becomes strong, then it begins to interact some with its surroundings. Based on the NHC forecast, Florence will not become strong enough for this to occur.

[Derek Ortt]

Florence is a 45-50KT TS

This question is a mute point

[wxmann_91]

If a hurricane is sufficiently strong, it will control its own environment. A weak or progressive trough in that case will not be able to steer a very strong and deep hurricane. However, it will be able to stairstep the ridge, and via the Beta Effect, gain enough latitude to eventually be recurved which most strong storms do.

I have a good loop of Ioke that demonstrates this effect. When it became a Cat 5 the first time, it literally blew the trough to its northwest away, and thus the ridge behind the trough resulted in Ioke loosing latitude.

[WxGuy1]

Florence is a 45-50KT TS

This question is a mute point

Who said anything about Florence? I see WindRunner did, but in regards to it not being an issue too.

Yes, strong cyclones can modify the surrounding environment. There is a massive amount of energy flux involved in intense storms, and strong anticyclones that tend to develop over strong hurricanes can directly affect nearby areas (and thus the "steering" flow).

[sma10]

This question is a mute point

LOL