NWPac 2006 text BT released

[Chacor]

http://www.jma.go.jp/jma/jma-eng/jma-ce ... st2006.txt

The JMA has released their text best-track file for 2006.

Of note:

Retired storms:
Chanchu 95 kt 930 hPa
Bilis 60 kt 970 hPa
Saomai 105 kt 925 hPa
Xangsane 85 kt 940 hPa
Durian 105 kt 915 hPa

Graphical tracks can be found here:
http://www.jma.go.jp/jma/jma-eng/jma-ce ... 006_m.html

[HurricaneBill]

I know they have the final say, but I think Cimaron had winds much higher than 100KT (10-min).

[Chacor]

Indeed, quite possibly the JTWC underestimated it too. After all, SAB did issue a T7.5 (with comments that DT was 8.0!), as did AFWA and JTWC themselves.

[P.K.]

Yes I saw this was out the other day. Just been looking at some of the stats. I make it an ACE value for the season around 242x10^4kt^2, when 2005 was just around 215x10^4kt^2. I'll work out some more values and post them in the TA area in a while.

[CrazyC83]

Those are 10-minute sustained winds.

[Coredesat]

Those are 10-minute sustained winds.

I'm fairly sure he used the 10-minute winds, otherwise the ACE would be higher.

[AussieMark]

PK always uses standard so need to tell him its 10 mins

he always has to tell everyone else its 10 mins

[Coredesat]

We now have a major discrepancy at the time of Ioke's crossover - HURDAT says 900 mb, JMA's BT says 925 mb. It sure didn't fill by 25 mb in 3 hours, so something's wrong here. Would the JMA revisit it to correct the discrepancy (since operationally, they used the CPHC pressure when it crossed over, but the BT has it at a higher pressure now, 920 op vs. 925 BT)?

It should also be worth noting that the 900 mb pressure occurred at 179.7W, which puts it still inside the CPHC AOR at that time.

[P.K.]

I'm not sure you have read the BT right (Or if you have I'm not).

Right here is the RSMC Honolulu BT.

35915 08/27*1791787 140 920*1761797 140 900*1721807 140 900*1691814 140 900*

RSMC Tokyo have.

66666 0612 046 0014 0612 1 0 IOKE 20061114
06082706 002 7 176 1805 925 100 90090 0090 80200 0140
06082712 002 5 172 1795 925 100 90090 0090 80200 0140
06082718 002 5 169 1786 925 100 90090 0090 80200 0140
06082800 002 5 166 1776 925 100 90090 0090 80200 0180

So at the time RSMC Honolulu say 900hPa it is within Tokyo's AOR (17.2N 179.3E) and RSMC Tokyo say 925hPa also in their AOR (17.2N 179.5E).

[Coredesat]

EDIT: Actually, I think you might've misread it, because the data points begin at the asterisks:

35915 08/27 *1791787 140 920 *1761797 140 900 *1721807 140 900 *1691814 140 900

[P.K.]

Fair enough, it is late and I've not looked at this form of BT for a while. Been looking at the Tokyo BT a bit this evening and BoM BT recently so I can read those properly.

[HurricaneBill]

JMA uses a different version of the Dvorak scale. For a typhoon to have 10-min sustained winds of 120KT, it needs at least an 8.0 on the Dvorak scale JMA uses.

The last time JMA had a typhoon reaching 120KT winds was Super Typhoon Yuri in 1991.

The most intense typhoon according to the JMA was Super Typhoon Tip in 1979. JMA had Tip peaking with 10-min sustained winds of 140KT!