ATL HANNA: Extratropical - Discussion

[LAwxrgal]

Hanna is a large system:

And look at how deep her convection is...given the right conditions she can ramp up quickly.

[gatorcane]

And look what's behind Hanna..

And behind and behind.......................

lol good one cycloneye

[storms in NC]

When was the last Big storm in size?

[LAwxrgal]

When was the last Big storm in size?

I don't remember the sizes of Dean and Felix, but IIRC Wilma '05 was a pretty large system.

[NEXRAD]

I am not surprised that Hanna is now a hurricane. However, I am shocked that the Hurricane force winds extend 70 miles out from the center. That is a big wind field for a 75 MPH storm.

Based on what the recon is finding, I suspect that the maximum winds are situated in a band well east of the circulation center, hence the apparent wide-expanse of 65-knot winds. The winds seem to be a little calmer near the actual circulation as of recon's last center passes.

- Jay

[Trader Ron]

Looks like 1995, except there's ridging in the Atlantic Basin.

Will be interesting IF the track changes at 5 PM.

It won't take much, to bring it to Florida because of the angle of the coast.

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The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or storm2k.org. For official information, please refer to the NHC and NWS products.[/quote]

[Blown Away]

Nearly all the guidance misses Florida, seems maybe we are getting a little to worked up here in Florida, still needs to be closely monitored.

[WindRunner]

I am not surprised that Hanna is now a hurricane. However, I am shocked that the Hurricane force winds extend 70 miles out from the center. That is a big wind field for a 75 MPH storm.

It has a relatively loose pressure gradient associated with it, similar to how Gustav did shortly before undergoing RI south of Cuba - not the best of comparisons, I know, but I do remember seeing a pressure field like this one with him. I think his wind field was also large at the 50kt level, but not so much the 64kt level like Hanna's is.

[CourierPR]

Nearly all the guidance misses Florida, seems maybe we are getting a little to worked up here in Florida, still needs to be closely monitored.

I think, given more recent developments,that track guidance will change soon.

[captain east]

Nearly all the guidance misses Florida, seems maybe we are getting a little to worked up here in Florida, still needs to be closely monitored.

Ya, but the UKMET has been doing us good and was the one that caused the more westernly change.

[Hockey007]

Heh... the SFMR must be a bit crazy today... it's spewing out crazy numbers in the recon flight.

[WindRunner]

Heh... the SFMR must be a bit crazy today... it's spewing out crazy numbers in the recon flight.

That's due to the fact that the plane's track went over or near land during that sequence. You can see it was turned completely off at one point, and that accounts for most of the passage over land, but it still give overinflated readings for one or two data sets at either end as well, which seems to be pretty typical of the instrument.

[Sanibel]

I haven't had time to study this - but if I looked at the visible loop alone I would say it is doing the original WSW track right now. Tell me this isn't true please.

[Ptarmigan]

I am not surprised Hanna has become a hurricane. It was at one point a large tropical storm with TS wind extending up to 205 miles.

[jlauderdal]

And look what's behind Hanna..

there is another thread for that and of course floridians will be having to jump between the threads as both systems are clearly in play for us

[jlauderdal]

When was the last Big storm in size?

gustuv

[caneman]

Quite a few of the those models are unreliable and some of the others are dated. 12z HWRF now middle Ga. coast was middle to lower SC at last run.

[Blown Away]

Hanna sure is blowing by the NHC forecast points, correct me if I'm wrong each one is 12 hours. Hanna sure is not stalling.
http://www.ssd.noaa.gov/goes/flt/t2/loop-vis.html

[jlauderdal]

Hanna sure is blowing by the NHC forecast points, correct me if I'm wrong each one is 12 hours. Hanna sure is not stalling.
http://www.ssd.noaa.gov/goes/flt/t2/loop-vis.html

nhc has stated the last few days about low confidence in track and intensity, that was a good idea because so far its been a real bear to forecast unlike td9 which will be straight forward for the rest of the week

[terrapintransit]

Nearly all the guidance misses Florida, seems maybe we are getting a little to worked up here in Florida, still needs to be closely monitored.

We need rain badly where I live in Central Pennsylvania. Looking @ that track looks like we could get some!!