ATL HANNA: Extratropical - Discussion

[bob rulz]

Whoo, I was worried about Hanna there for a while!

But if you click on the 5-day track forecast you'll realize that it's suddenly morphed into rapidly-weakening Tropical Depression Genevieve.

Phew, and everyone thought this was gonna hit the East Coast.

[NEXRAD]

HANNA HAS BECOME A LARGE TROPICAL CYCLONE. TROPICAL STORM FORCE
WINDS EXTEND OUTWARD UP TO 290 MILES...465 KM...MAINLY TO THE NORTH
OF THE CENTER.

That's a... large storm.

Obnoxiously large. Based on the wind fields, Hanna seems almost subtropical... but that's only based on the bizarre large wind radii combined with the tiny (comparatively speaking) storm-force radii.

- Jay

[KWT]

Looks to me this has several vortexes at the moment looking at the Sat.imagery. There is some turning down where the NHC center is but there is aslo a strong circulation to the NE. I wonder whether thats the MLC and the two are decoupled?

[bob rulz]

Whoo, I was worried about Hanna there for a while!

But if you click on the 5-day track forecast you'll realize that it's suddenly morphed into rapidly-weakening Tropical Depression Genevieve.

Phew, and everyone thought this was gonna hit the East Coast.

Aw...they fixed it.

[UpTheCreek]

Whoo, I was worried about Hanna there for a while!

But if you click on the 5-day track forecast you'll realize that it's suddenly morphed into rapidly-weakening Tropical Depression Genevieve.

Phew, and everyone thought this was gonna hit the East Coast.

Aw...they fixed it.

hehe, you sure had me confused on your previous post!

[stayawaynow]

Florida out of the cone and breathing a sigh of relief....

gatorcane - if tropical storm force winds extend out 290 miles.....do you think we will have TS force winds in palm Beach County?

[cpdaman]

what a mess! what is that on her left side that extends to the NW bahamas is that a deformed ULL

also i think i may see the first signs of the upper low of the NE starting to move out (or maybe it's just rotating again)

perhaps hanna will just go out to sea, should models trend east any more this could be a reality, although a close brush with the outer banks seems like the minimum possible interaction right now.

looks like a growing quasi tropical feature to me , i think the interaction with the ull feature on her west end will keep her weak for awhile, she IM growing opinion will not get her act together till she crosses 27-28 N and gets away from this feature.

[storms in NC]

Tallywx, I'll take it blackened. Seriously, if she comes your way, be safe.

Thanks, but at this point climatology and model shifting has me thinking the paradigmatic Wilmington to Cape Lookout skirter. That wouldn't bring much weather to the Raleigh/Durham area. On the other hand, I've been craving a shrimp burger from El's Drive In in Morehead City...

Great place to eat
Looks as if we might get some rain any way. Thank God I hope it stay on the forcast as it is now cause it puts it over my house.
I also hope farther North Va ,NJ get the rain too.

[cpdaman]

Florida out of the cone and breathing a sigh of relief....

gatorcane - if tropical storm force winds extend out 290 miles.....do you think we will have TS force winds in palm Beach County?

edit well there may be seeing that they are forecast to extend 200 miles to the NW, but school would still be on

[Evil Jeremy]

Florida out of the cone and breathing a sigh of relief....

gatorcane - if tropical storm force winds extend out 290 miles.....do you think we will have TS force winds in palm Beach County?

With a near 300 mile wind field, and it could still grow, it is possible for parts of the east coast to get TS watches or warnings if Hanna leans towards the west part of the cone.

http://www.nhc.noaa.gov/refresh/graphic ... i#contents

[carversteve]

Sure looks like shes starting to make that nw movement from last frame of the visible...completely unofficial of course!

[chris_fit]

Maybe it's an illusion... but take a look here...

http://www.ssd.noaa.gov/goes/flt/t2/loop-vis.html

Right under that big northern blob, on the southern side of it. You can see some spinning and it's booking (compared to what it was earlier) it to the west...

Right near 21.8-9N 71.7-8W

Any comments?

[NEXRAD]

Florida out of the cone and breathing a sigh of relief....

gatorcane - if tropical storm force winds extend out 290 miles.....do you think we will have TS force winds in palm Beach County?

The wind fields are more limited west of the storm; most of the winds extend towards the east.

[carversteve]

I know Hanna is weak right now...but if you look at the visible she has that look!!! She looks a bit better than she has........ Then again i could be way off....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

[NEXRAD]

Maybe it's an illusion... but take a look here...

http://www.ssd.noaa.gov/goes/flt/t2/loop-vis.html

Right under that big northern blob, on the southern side of it. You can see some spinning and it's booking (compared to what it was earlier) it to the west...

Right near 21.8-9N 71.7-8W

Any comments?

If there are multiple low level vortices defining the storm's "center" then they'd likely rotate around a common central axis. Therein, the westward motion of the northern vortex could be caused by it rotating counter-clockwise about the common center.

- Jay

[storms in NC]

Florida out of the cone and breathing a sigh of relief....

gatorcane - if tropical storm force winds extend out 290 miles.....do you think we will have TS force winds in palm Beach County?

With a near 300 mile wind field, and it could still grow, it is possible for parts of the east coast to get TS watches or warnings if Hanna leans towards the west part of the cone.

http://www.nhc.noaa.gov/refresh/graphic ... i#contents

I would think so too. The storm like you said is lager and should give East Fl some rain and a little wind. If she get her Butt in gear.

[bob rulz]

I know Hanna is weak right now...but if you look at the visible she has that look!!! She looks a bit better than she has........ Then again i could be way off....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

You know you don't have to put the disclaimer after every one of your posts. Only ones where you make a forecast.

[cpdaman]

Maybe it's an illusion... but take a look here...

http://www.ssd.noaa.gov/goes/flt/t2/loop-vis.html

Right under that big northern blob, on the southern side of it. You can see some spinning and it's booking (compared to what it was earlier) it to the west...

Right near 21.8-9N 71.7-8W

Any comments?

silver star for you (i would give you gold but it's not booking to the west) in fact it's barely moving



she actually looks much better from the visible

we shall see how much the ULL to her west will hurt her...NHC says it will entrain dry air and shear and keep her in check in the short term..but who knows....with hanna

[bob rulz]

There is one thing I CAN say with certainty.

The tropical cyclone report for Hanna will make for a VERY interesting read...

[carversteve]

I know Hanna is weak right now...but if you look at the visible she has that look!!! She looks a bit better than she has........ Then again i could be way off....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

You know you don't have to put the disclaimer after every one of your posts. Only ones where you make a forecast.

Thanks but i choose to..better safe than sorry!