ATL: TEDDY - Post-Tropical - Discussion

[AnnularCane]

Amazing how tiny Beta and Paulette look by comparison.

[us89]

Down to 100 mph in the intermediate advisory, but far more impressive is the wind radius:

Teddy is an extremely large hurricane. Satellite-derived winds and
a recent NOAA Hurricane Hunter mission indicate that hurricane-force
winds extend outward up to 150 miles (240 km) from the center and
tropical-storm-force winds extend outward up to 550 miles (890 km).
Buoy 44150, located about 150 n mi north of the center, recently
reported a significant wave height of 36 ft (11 m).

What's the wind field record currently held by Sandy? This has to be close to that.

[ElectricStorm]

Down to 100 mph in the intermediate advisory, but far more impressive is the wind radius:

Teddy is an extremely large hurricane. Satellite-derived winds and
a recent NOAA Hurricane Hunter mission indicate that hurricane-force
winds extend outward up to 150 miles (240 km) from the center and
tropical-storm-force winds extend outward up to 550 miles (890 km).
Buoy 44150, located about 150 n mi north of the center, recently
reported a significant wave height of 36 ft (11 m).

What's the wind field record currently held by Sandy? This has to be close to that.

This has to be like top 10 all time in the Atlantic size-wise right?

[ColdMiser123]

A little surprised that there aren't any kind of tropical storm watches or warnings for far eastern locations of the United States, the 2 pm intermediate advisory wind field now puts tropical storm force winds over eastern Maine, Cape Cod, and Nantucket.

[Kazmit]

This looks like a nor'easter.

[us89]

A little surprised that there aren't any kind of tropical storm watches or warnings for far eastern locations of the United States, the 2 pm intermediate advisory wind field now puts tropical storm force winds over eastern Maine, Cape Cod, and Nantucket.

Looks like they're going with non-tropical wind products there. Nantucket is under a high wind warning, with the nearby coastal waters under gale or storm warnings.

I'm not sure I agree with that decision - but if I had to guess, they're going with the non-tropical products because they're in the dry intrusion. People might assume a TS warning implies heavy rain, when that's in fact the exact opposite of what they'll see. A whole bunch of RI/MA/NH/ME are even dry enough for a red flag warning.

[ColdMiser123]

A little surprised that there aren't any kind of tropical storm watches or warnings for far eastern locations of the United States, the 2 pm intermediate advisory wind field now puts tropical storm force winds over eastern Maine, Cape Cod, and Nantucket.

Looks like they're going with non-tropical wind products there. Nantucket is under a high wind warning, with the nearby coastal waters under gale or storm warnings.

I'm not sure I agree with that decision - but if I had to guess, they're going with the non-tropical products because they're in the dry intrusion. People might assume a TS warning implies heavy rain, when that's in fact the exact opposite of what they'll see. A whole bunch of RI/MA/NH/ME are even dry enough for a red flag warning.

Could be a productive discussion after Teddy to see which products might be more appropriate for secondary impacts from a tropical system, and which products make more sense from a communication perspective. Guidance does still show a significant amount of rain for east Maine, so combined with gusts to 50-60 mph and high surf, it will definitely have all the impacts of a tropical system. The conversation after Sandy moved the NHC toward issuing watches and warnings even for post-tropical systems, but fortunately the impacts here from Teddy in New England will be far less.

[dukeblue219]

Down to 100 mph in the intermediate advisory, but far more impressive is the wind radius:

Teddy is an extremely large hurricane. Satellite-derived winds and
a recent NOAA Hurricane Hunter mission indicate that hurricane-force
winds extend outward up to 150 miles (240 km) from the center and
tropical-storm-force winds extend outward up to 550 miles (890 km).
Buoy 44150, located about 150 n mi north of the center, recently
reported a significant wave height of 36 ft (11 m).

What's the wind field record currently held by Sandy? This has to be close to that.

Someone will be along with better numbers of total size, but a quick scan of Sandy's advisories showed a maximum tropical storm wind radius of 520mi. Teddy would appear to exceed that at least in one axis.

[galaxy401]

Spanning 30 degrees of latitude

Crazy how big Teddy is. The very end of its tail is being fed moisture by Beta! Or is it the other way around?

[Hypercane_Kyle]

If I'm not mistaken, Teddy has gale force winds spanning a diameter of 1,100 miles. This would make Teddy the largest Atlantic hurricane on record in terms of Gale force winds, surpassing the record set by Ogla in 2001 (Sandy was #2).

[us89]

A little surprised that there aren't any kind of tropical storm watches or warnings for far eastern locations of the United States, the 2 pm intermediate advisory wind field now puts tropical storm force winds over eastern Maine, Cape Cod, and Nantucket.

Looks like they're going with non-tropical wind products there. Nantucket is under a high wind warning, with the nearby coastal waters under gale or storm warnings.

I'm not sure I agree with that decision - but if I had to guess, they're going with the non-tropical products because they're in the dry intrusion. People might assume a TS warning implies heavy rain, when that's in fact the exact opposite of what they'll see. A whole bunch of RI/MA/NH/ME are even dry enough for a red flag warning.

Could be a productive discussion after Teddy to see which products might be more appropriate for secondary impacts from a tropical system, and which products make more sense from a communication perspective. Guidance does still show a significant amount of rain for east Maine, so combined with gusts to 50-60 mph and high surf, it will definitely have all the impacts of a tropical system. The conversation after Sandy moved the NHC toward issuing watches and warnings even for post-tropical systems, but fortunately the impacts here from Teddy in New England will be far less.

I'm also surprised at least some portion of the southern Nova Scotia coast isn't under a hurricane watch. Even if Teddy is fully extratropical by then as expected, I have a hard time believing the winds will weaken a whole lot before at least some portion of that huge hurricane-force field hits land. I would have figured some of those TS watches in northern NS/NB/PEI would be upgraded to warnings as well.

[ColdMiser123]

Looks like they're going with non-tropical wind products there. Nantucket is under a high wind warning, with the nearby coastal waters under gale or storm warnings.

I'm not sure I agree with that decision - but if I had to guess, they're going with the non-tropical products because they're in the dry intrusion. People might assume a TS warning implies heavy rain, when that's in fact the exact opposite of what they'll see. A whole bunch of RI/MA/NH/ME are even dry enough for a red flag warning.

Could be a productive discussion after Teddy to see which products might be more appropriate for secondary impacts from a tropical system, and which products make more sense from a communication perspective. Guidance does still show a significant amount of rain for east Maine, so combined with gusts to 50-60 mph and high surf, it will definitely have all the impacts of a tropical system. The conversation after Sandy moved the NHC toward issuing watches and warnings even for post-tropical systems, but fortunately the impacts here from Teddy in New England will be far less.

I'm also surprised at least some portion of the southern Nova Scotia coast isn't under a hurricane watch. Even if Teddy is fully extratropical by then as expected, I have a hard time believing the winds will weaken a whole lot before at least some portion of that huge hurricane-force field hits land. I would have figured some of those TS watches in northern NS/NB/PEI would be upgraded as well.

I would expect widespread hurricane force gusts near and east of where Teddy makes landfall in central-eastern Nova Scotia.

[aspen]

Down to 100 mph in the intermediate advisory, but far more impressive is the wind radius:

Teddy is an extremely large hurricane. Satellite-derived winds and
a recent NOAA Hurricane Hunter mission indicate that hurricane-force
winds extend outward up to 150 miles (240 km) from the center and
tropical-storm-force winds extend outward up to 550 miles (890 km).
Buoy 44150, located about 150 n mi north of the center, recently
reported a significant wave height of 36 ft (11 m).

What's the wind field record currently held by Sandy? This has to be close to that.

If the ratio of NE/SW wind radii from 11am remains the same (360 nmi/270 nmi), then the SW wind radius for 2pm is ~415 miles, and Teddy’s wind diameter is 965 miles.

[dukeblue219]

If I'm not mistaken, Teddy has gale force winds spanning a diameter of 1,100 miles.

It's not that symmetric.

[aspen]

If Teddy still has a warm core and remains a TC in the next advisory or two, it has a chance to dethrone Olga and Sandy as the largest Atlantic hurricane. It’s already extremely close. We should know after recon does their first full pass.

[TheDreamTraveler]

The wind field is absolutely massive

[ElectricStorm]

The wind field is absolutely massive

https://www.nhc.noaa.gov/storm_graphics/AT20/refresh/AL202020_current_wind+png/174608_current_wind_sm.png

That is insane...

[plasticup]

The wind field is absolutely massive

https://www.nhc.noaa.gov/storm_graphics/AT20/refresh/AL202020_current_wind+png/174608_current_wind_sm.png

Positioned a little differently that could bring TS winds to Cuba and Virginia at the same time.

[aspen]

The wind field is absolutely massive

https://www.nhc.noaa.gov/storm_graphics/AT20/refresh/AL202020_current_wind+png/174608_current_wind_sm.png

Good thing those New England scenarios didn’t pan out. That would’ve brought tropical storm conditions from Nova Scotia to the Mid-Atlantic states, and as far inland as Quebec.

[aspen]

The NHC is apparently running out of synonyms of “big” for Teddy.

It turns out Teddy isn’t as large as I thought. However, it’s still easily one of the largest TCs in the Atlantic. Its TS wind field is 852 miles across from NE to SW, and the 12ft wave field is 1,864 miles across along the same axis.