The only official CI8.0 system on record

[Meow]

From the Annual Report on the Activities of the RSMC Tokyo - Typhoon Center 2010.



Try to explain this.
Shì shì shì shì.

[Alyono]

To be fair, I don't think they are using the actual Dvorak scale, but instead a modified version. The intensities do NOT match the actual Dvorak numbers

[Meow]

To be fair, I don't think they are using the actual Dvorak scale, but instead a modified version. The intensities do NOT match the actual Dvorak numbers

It is called the Koba table, which JMA uses. CI8.0 = 888hPa 122kt

http://www.wmo.int/pages/prog/www/tcp/d ... alysis.pdf

To many other storms in the northwest Pacific, it works pretty well, but Megi is a disputable case.

[Alyono]

which means it is not a true Dvorak

That said, Megi was the best looking storm on sat that I have ever seen

[Alyono]

The JMA winds in Megi are at least 25 KT too low based upon recon data (even when considering 1 min to 10 min winds). It simply is not accurate

[supercane4867]

The JMA winds in Megi are at least 25 KT too low based upon recon data (even when considering 1 min to 10 min winds). It simply is not accurate

JMA's wind speed evaluation doesn't follow the traditional sustained wind conversion
125knot is actually the highest wind JMA given to a tropical cyclone since Bess of 1982

[Meow]

The JMA winds in Megi are at least 25 KT too low based upon recon data (even when considering 1 min to 10 min winds). It simply is not accurate

CI8.0 = 122kt = original 170kt

I guess 125kt is the maximum limit of JMA’s scale based on the Koba table. Tip’s 140kt is just converted from 165kt (165*0.88=140.8). Other two 125kt storms from JMA Best Track were born before the Koba table.

which means it is not a true Dvorak

Currently no agency uses a true Dvorak.

[supercane4867]

That said, Megi was the best looking storm on sat that I have ever seen

Typhoon Nida and Hurricane Rick in the Previous year just look as impressive if not even better

[Alyono]

The JMA winds in Megi are at least 25 KT too low based upon recon data (even when considering 1 min to 10 min winds). It simply is not accurate

CI8.0 = 122kt = original 170kt

I guess 125kt is the maximum limit of JMA’s scale based on the Koba table. Tip’s 140kt is just converted from 165kt (165*0.88=140.8). Other two 125kt storms from JMA Best Track were born before the Koba table.

which means it is not a true Dvorak

Currently no agency uses a true Dvorak.

They should have used the conversion for Megi as like Tip, Megi had recon data

[Meow]

Typhoon Nida and Hurricane Rick in the Previous year just look as impressive if not even better

Yes, they are extremely impressive, but not the most impressive. Based on their looking, they may be 9.9, but not 10.0.

[Meow]

They should have used the conversion for Megi as like Tip, Megi had recon data

The Koba table is not a conversion; it is an average rate of many observations.

Other agencies in the South Hemisphere use the conversion. Strong storms look stronger, but many storms which can be analysed as TS by JMA would not be named because of the conversion.

[supercane4867]

Typhoon Nida and Hurricane Rick in the Previous year just look as impressive if not even better

Yes, they are extremely impressive, but not the most impressive. Based on their looking, they may be 9.9, but not 10.0.

Neither Megi could score a 10.0
From objective Dvorak standard they were all at the same level

[Yellow Evan]

What were Monica's Dvorak's? That IMO was as strong as Megi.

[supercane4867]

What were Monica's Dvorak's? That IMO was as strong as Megi.

That CI8.0 analyze was from CIMSS-ADT, nothing official

[Meow]

Megi is also very lucky—it has a TIFF MODIS picture for its peak intensity, but Nida and Rick don’t have.

[supercane4867]

Notice that there're about six tropical cyclones globally had the maximum Dvorak T-number given by an agency
As one of them Hurricane Gilbert was analyzed at T8.0 by NHC itself. So Megi maybe the only Official CI8.0 system, but not the only system received official top Dvorak intensity.

[Meow]

Notice that there're about six tropical cyclones globally had the maximum Dvorak T-number given by an agency
As one of them Hurricane Gilbert was analyzed at T8.0 by NHC itself. So Megi maybe the only Official CI8.0 system, but not the only system received official top Dvorak intensity.

Please give us a reference.

[supercane4867]

Please give us a reference.

If this is what you want

Hurricane Gilbert preliminary report page 8


Squares that went off the chart correspond to 170kt intensity

[Meow]

Squares that went off the chart correspond to 170kt intensity

But it is not ultimately recognized.

[supercane4867]

Squares that went off the chart correspond to 170kt intensity

But it is not ultimately recognized.

Of course not, it's Dvorak classification and does not related to what recon found anyway
Just an example of another perfect storm by official satellite estimation