ATL: ANA - Post-Tropical

[RL3AO]

I do like the fact they're using social media to inform people that a decision has been made instead of having us refresh the NHC page at 4:50 pm.

[wxman57]

Surface low still to large & broad, and no convection near it. Needs to tighten-up and grow some squalls near the center to be classified as STS Ana.

[Evil Jeremy]

I do like the fact they're using social media to inform people that a decision has been made instead of having us refresh the NHC page at 4:50 pm.

Or worse, setting their FTP page to auto-refresh for the renumber.

[SeGaBob]

@NHC_Atlantic 30 seconds ago
NHC will not be initiating advisories for the low off the southeast U.S. coast at 5 PM. Advisories could begin at 11 PM.

This message is also on the NHC website.

[galaxy401]

That is quite neat for the NHC to post updates on the site now.

I agree about waiting on the low. Not quite there yet but it might be soon.

[TheStormExpert]

I do like the fact they're using social media to inform people that a decision has been made instead of having us refresh the NHC page at 4:50 pm.

Or worse, setting their FTP page to auto-refresh for the renumber.

Much better than frustratingly refreshing the NHC site questioning if they will upgrade.

[NDG]

I would expect 90L to start getting better organized, convection wise, starting tonight through tomorrow as it will be tracking through the heart of the warm loop current with SSTs near 80. But I would expect that as quickly it starts moving away from the warm fuel over the weekend it will start loosing organization.

[RL3AO]

[NDG]

There's it is, convection now firing near the low pressure center.

[Hypercane_Kyle]

Convection starting to fire over the low is a good step towards this being named sometime in the next 6-12 hours.

[StarmanHDB]

Yep, that center's bubbling rather nicely now. No denying it (well, based on vis sat and my highly underedumicated opinion)....Here comes Ana!

[wxman57]

Convection is still a bit west of the broad low center. lt also needs to be persistent.

[NDG]

Recon is approaching the low pressure center, lets see if it finds a more defined center.

[HurricaneTracker2031]

90L has convection firing near the center. However, it needs to be sustained and organize a little more. A few more hours is required to see it's fate.



Synopsis for 90L and other systems: http://goo.gl/BBRnSU

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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.

[Ivanhater]

The band well off to the north and east should detach over night and left with the low itself.

[SouthDadeFish]

Bob Hart's phase space suggests this system is symmetric warm-core, although it's pretty shallow. Interesting nonetheless. This suggests the transition to a fully tropical system may not be that far away.

http://moe.met.fsu.edu/cyclonephase/gfs ... 12/25.html

[wxman57]

Recon is approaching the low pressure center, lets see if it finds a more defined center.

That appears to be the frontal boundary.

[NDG]

Recon approaching on the NW quadrant, so far unflagged 45 knot winds by SFMR.

224430 3201N 07852W 8449 01515 0083 +132 +111 043035 035 045 002 00

[northjaxpro]

Give it at least 6 hours from now and if the convection sustains itself near or around the center, NHC I believe will upgrade to STS Ana by 2 a.m. at the earliest. Interesting seeing the cloud deck coming into the Jax area moving south down the coast on the extreme western periphery of the circulation.

[NDG]

Where they found the lowest pressure, nice wind shift too.

230930 3126N 07731W 8446 01480 0030 +143 +134 235004 005 003 002 00