Tropical Major Hurricane Helene

[Drizzle Snizzle]

Not sure I'd it's just me but I think this plus Helene is going to rival 2009's flooding if the totals truly reach those levels.

And can you imagine if we get another tropical system in October on top of all of this rain ?

 

[Ron Burgundy]

Not sure I'd it's just me but I think this plus Helene is going to rival 2009's flooding if the totals truly reach those levels.

Was just thinking the same. There were things flooding in my area that day that I never even knew existed.

 

[weatherfide]

Not sure I'd it's just me but I think this plus Helene is going to rival 2009's flooding if the totals truly reach those levels.

I hope not. The ground is very dry and the antecedent rainfall will hopefully help prime it for uptake of the moderate to heavy precipitation rates that follow.

 

[Ethan80963]

Don't know if it was posted but GA now under a state of emergency

https://www.atlantanewsfirst.com/20...ared-georgia-ahead-helene-gov-kemp-announces/

 

[DustinWx]

If the storm is moving so fast; what would cause so much rain ?

 

[Ron Burgundy]

FFC is buying into the PRE for tomorrow. Link to the full disco at bottom:

The biggest thing to note compared to the
previous forecast is increasing confidence on heavy rainfall leading
to flash flooding across much of North GA including the ATL metro
tomorrow (Wednesday) afternoon. Tropical moisture will be on the
increase and will set up ahead of the frontal boundary moving in
from the northwest. Thus, PWs will be upwards of 2+ inches per
latest guidances. An upgrade (from WPC) will be forthcoming for
northeast GA down south including Metro ATL for a Moderate Risk (3
out of 4) of Excessive Rainfall -- i.e. the greatest risk for
rainfall intense enough to cause flash flooding. Latest forecast
totals (for Wednesday only) ranges from 2 to 3 inches with locally
higher amounts. Heavy rainfall and flash flooding potential will be
the main concern for tomorrow (Wednesday) -- note: this is ahead of
anything tropical related. As a result of increasing confidence in
hydro related issues, we have opted to issue a Flood Watch for much
of North and Central GA. This will encompass the threat for
Wednesday and then the evolving threat for the Thursday-Friday
timeframe in association with Tropical Storm Helene. For details
about Tropical Storm Helene please see the long term discussion
below.

FFC Afternoon Disco

 

[GeorgiaGirl]

If the storm is moving so fast; what would cause so much rain ?

Well, there may be a significant pre event in North Georgia tomorrow.

 

[Stormsfury]

The larger LLC swirl is drifting back north or just west of due north trying to rejoin the convective blob party with some hints of towers going up it.

 

[ILMRoss]

If the storm is moving so fast; what would cause so much rain ?

the tropical moisture envelope extends well past helene. take that rich airmass and have it get ingested into the forcing ahead of a sharp trough- really efficient way to create heavy rain. i totally buy the qpf forecasts

 

[jrips27]

Sheesh

 

[Stevo24]

I can’t even get in on a flood watch.

 

[Ethan80963]

 

[SASQUATCH]

My God, at the training over N. Georgia.

 

[Stevo24]

My God, at the training over N. Georgia.

What’s causing that setup?

 

[ForsythSnow]

What’s causing that setup?

The perfect feed between the upper level low and Helene. It's going to get very wet here tomorrow onward. A widespread 6 to 8 inches is going to cause a lot of issues.

 

[EmersonGA]

My God, at the training over N. Georgia.

Looks like 2009 or Dennis in 05 to me.

 

[$alt]

Welp. Maybe around 19.5N center?

 

[jrips27]

For anyone wanting some afternoon reading on PRE here’s a 2010 paper from CSU

Loading…

schumacher.atmos.colostate.edu

 

[Snow_chaser]

My God, at the training over N. Georgia.

And like what’s been mentioned before, there’s parts of NW Georgia that hasn’t had any significant rain in a long time. This come down hard and fast it’s all going to run off causing flooding

 

[jrips27]

From the WPC discussion - high risk being mentioned for Day 3