ATL: HELENE - Post-Tropical - Discussion

[Beef Stew]

Radar velocities seem to support an even higher intensity. I'm seeing velocities up to 145 kt at about 8,000-9,000 feet.

What's an approximate conversion factor for radar velocities at that height?

[chaser1]

Radar showing 172mph at about 7500ft aloft on the Tallahassee radar. Nuts

My God.... keep that stuff above ground level

[Kingarabian]

Radar velocities seem to support an even higher intensity. I'm seeing velocities up to 145 kt at about 8,000-9,000 feet.

I think the current intensity is near 130kts since instant Dvorak analysis supports a T6.5 and has supported that for the past 2 hours. But constraints and recon don't support it yet.

[tolakram]

Saved loops from different radar sites

[CrazyC83]

Radar velocities seem to support an even higher intensity. I'm seeing velocities up to 145 kt at about 8,000-9,000 feet.

What's an approximate conversion factor for radar velocities at that height?

That would be about 130 kt.

[WilmingtonSandbar]

How much of an effect will this dry air have on it? Will it choke or spit it out?

[StormPyrate]

Winding down here in Clearwater / Largo area
max gust was 74 at my house

[ScottNAtlanta]

If this had more time it could have easily been a cat 5

Most likely. Had some internal issues yesterday that had to mix out. I wouldn't want to be in ATL. Not sure Atlanta can handle the winds they are about to receive let alone the water.

If it passes east of us wind wont be as big of an issue. I'm more worried about the rain. Rivers around here are already past flood stage

[technikal]

Power just went out here in Tallahassee. So it begins.

[aspen]

Saved loops from different radar sites

https://i.imgur.com/JcaHbTn.gif

https://i.imgur.com/TBqeF7A.gif

Possible EWRC trying to commence? That outer band really looks like it’s trying to become an outer eyewall.

[Travorum]

SAR coming in at 23:30z. Max recorded wind about 120kts:

Platform: RCM-1 Acquisition Date: 2024-09-26 23:36:13 UTC Storm Name: AL092024 / HELENE Storm ID: AL09 Storm Center Longitude: -84.258 Storm Center Latitude: 28.560 Incidence Angle (Degrees): 33.520 Quadrant 1 NE VMax (kts): 115.34 Quadrant 2 SE VMax (kts): 121.61 Quadrant 3 SW VMax (kts): 93.16 Quadrant 4 NW VMax (kts): 100.04 RMax (nmi): 13.00 - 20.00	Platform: RADARSAT-2 Acquisition Date: 2024-09-26 23:38:23 UTC Storm Name: AL092024 / HELENE Storm ID: AL09 Storm Center Longitude: -84.255 Storm Center Latitude: 28.564 Incidence Angle (Degrees): 35.065 Quadrant 1 NE VMax (kts): 107.71 Quadrant 2 SE VMax (kts): 115.39 Quadrant 3 SW VMax (kts): 92.25 Quadrant 4 NW VMax (kts): 98.25 RMax (nmi): 12.00 - 21.00

[TampaWxLurker]

 https://x.com/WeatherProf/status/1839473382812713303

[drewschmaltz]

Slight turn west? Man, I hope Tallahassee is ready. I'm still amazed at the power of this in CFL. It's just different.

[Ken711]

Ryan Maue@RyanMaue·
32m
Western Taylor County in Florida will see landfall of Category 4 Hurricane Helene before midnight.

Helene will cross Interstate 10 and be in Georgia by 2 AM and zoom up I-75 leaving a path of destruction into Macon.

[Xyls]

Honestly, this may be early. But this track may actually be one of the best to avoid major damage from this hurricane from where it can go since it seems to be likely it will be near the Ecofina River State Park. Looks like Tallahassee will avoid very narrowly getting hit by the eyewall, and Perry may only get a glance so the worst of the incoming landfalling winds may actually be in a very sparsely populated area.

[Beef Stew]

Looking like landfall will occur in roughly an hour, give or take

[ScottNAtlanta]

Slight turn west? Man, I hope Tallahassee is ready. I'm still amazed at the power of this in CFL. It's just different.

NOOOOO!!!!!

[Teban54]

-90C convection lining up a quarter of the eyewall:

[ScottNAtlanta]

I believe this will be the last storm named Helene

[Sanibel]

2 feet of hurricane tide in neighborhhod on Sanibel...Equates to 5 to 7 feet at shore...

I no longer live there...My beautiful house is a bull-dozed lot thanks to Ian...