WPAC: DUJUAN - Post-Tropical

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euro6208
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Re: WPAC: DUJUAN - Tropical Storm

#241 Postby euro6208 » Tue Sep 29, 2015 5:42 am

On a serious note, 2 people have been confimed dead.
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#242 Postby beoumont » Tue Sep 29, 2015 6:12 am

"Typhoon Hunter"]Highest sustained winds Suao CWB weather station recorded was 39.8 m/s (10 minute average?) I'm not sure of the elevation of the station.

Yonaguni island east of Suao recorded sustained 51.6 m/s (JMA uses 10 minute average I believe) with a extraordinary gust to 81.1 m/s. It should be noted though that this station is at 30m elevation. That wind gust is highest recorded in Japan since 1966 (which was at the top of Mt Fuji.)


Mr Reynolds,

Being a (THE) veteran at typhoon interception, I ask what general formula you apply for "converting" these recorded 10 minute avg. sustained wind reports to an estimate of what that same wind indicates yielded as the maximum sustained 1 minute wind that occurred within those same 10 minutes.

I realize there could be great variance in the yield, as one storm, moving fast, might provide only 10 minutes of wind near the peak values for that landfall. While another storm could bring 30 minutes of wind near the max strength. And another only 5 minutes.

All other factors being equal, if you encounter a 10 minute sustained wind average of 100 mph, what would you guess the highest 1 minute average was during that 10 minute period?
Or, if you encounter a 10 minute sustained wind average of 120 mph, what would you guess (calculate) the highest 1 minute average was during that 10 minute measurement?

And in this case what would you estimate the 39.8 m/s sustained (89mph as Suao) and the 51.8 m/s (121 mph) at Yanaguni) would have yielded if the instruments were calculating one minute wind maxes instead?

RFH
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List of 78 tropical cyclones intercepted :
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Re: WPAC: DUJUAN - Post-Tropical

#243 Postby euro6208 » Thu Oct 01, 2015 9:00 am

Great preparation!

Only 3 killed in this howler...
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#244 Postby NotoSans » Thu Oct 01, 2015 12:42 pm

Weather station at Nan'ao recorded a minimum pressure of 956.3 mb (adjusted to sea level) before Dujuan made landfall. Unfortunately there were only hourly observations so the minimum value may not have been recorded.

Meanwhile, maximum ten-minute sustained winds recorded in Su'ao were 40.4 m/s (78.5 kt), surpassing the previous record of 40.2 m/s (78.2 kt) set by Gladys in 1994.
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Re: WPAC: DUJUAN - Post-Tropical

#245 Postby euro6208 » Tue Oct 06, 2015 6:26 am

Amazing loop from Himawari...

[youtube]http://www.youtube.com/watch?v=etpITaKtTa4[/youtube]
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