Typhoon pressures since 1987 (post recon era)

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HurricaneBill
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Typhoon pressures since 1987 (post recon era)

#1 Postby HurricaneBill » Thu Sep 08, 2011 1:29 am

Recon flights into typhoons ended in the middle of the 1987 season. However, low barometric pressures have still been recorded by weather stations, buoys, ships, etc.

Although not as impressive as the pressures measured by recon, some of the pressures are still impressive. There's no doubt some of these storms had lower pressures than were recorded.

I'll list typhoons that had a recorded pressure of 970mb or lower.
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Re: Typhoon pressures since 1987 (post recon era)

#2 Postby HurricaneBill » Thu Sep 08, 2011 1:34 am

1987: (after recon flights had ended)
Super Typhoon Dinah 939mb

Super Typhoon Lynn 969mb

1988:
Typhoon Ruby 946mb

1989:
Typhoon Dan 967mb
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Re: Typhoon pressures since 1987 (post recon era)

#3 Postby HurricaneBill » Thu Sep 08, 2011 1:39 am

1990:
Super Typhoon Flo 891mb (measured by recon during research mission)

1991:
Typhoon Kinna 958mb

Typhoon Nat 951mb

1992:
Typhoon Chuck 964mb

Super Typhoon Omar 940mb

1993:
Typhoon Robyn 969mb

1994:
Super Typhoon Fred 939mb

Typhoon Gladys 960mb

Super Typhoon Orchid 961mb

Typhoon Seth 952mb
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Re: Typhoon pressures since 1987 (post recon era)

#4 Postby HurricaneBill » Thu Sep 08, 2011 1:45 am

1995:
Typhoon Faye 965mb

Super Typhoon Kent 928mb

Super Typhoon Oscar 938mb

Super Typhoon Ryan 957mb

Super Typhoon Angela 926mb

1996:
Super Typhoon Herb 927mb

Super Typhoon Violet 969mb

1997:
Super Typhoon Winnie 959mb

Super Typhoon Oliwa 961mb

Typhoon David 967mb

Super Typhoon Keith 964mb

Super Typhoon Paka 948mb

1998:
Super Typhoon Babs 928mb

1999:
Super Typhoon Bart 962mb
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Re: Typhoon pressures since 1987 (post recon era)

#5 Postby HurricaneBill » Thu Sep 08, 2011 1:53 am

2000:
Typhoon Jelawat 959mb

Super Typhoon Bilis 931mb

Super Typhoon Saomai 958mb

2001:
Typhoon Utor 967mb

Typhoon Pabuk 970mb

Typhoon Haiyan 964mb

Super Typhoon Podul 967mb

2002:
Super Typhoon Chataan 961mb

Typhoon Rammasun 946mb

Super Typhoon Halong 959mb

Super Typhoon Phanfone 956mb

Typhoon Rusa 951mb

Typhoon Sinlaku 954mb

Super Typhoon Higos 957mb

Super Typhoon Pongsona 935mb

2003:
Super Typhoon Kujira 965mb

Typhoon Soudelor 968mb

Typhoon Etau 950mb

Typhoon Dujuan 964mb

Super Typhoon Maemi 912mb

Typhoon Choi-Wan 959mb

2004:
Super Typhoon Sudal 959mb

Super Typhoon Nida 966mb

Typhoon Mindulle 955mb

Typhoon Tingting 959mb

Typhoon Rananim 953mb

Super Typhoon Chaba 954mb

Typhoon Aere 961mb

Typhoon Songda 924mb

Super Typhoon Ma-On 964mb

Typhoon Tokage 949mb
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Re: Typhoon pressures since 1987 (post recon era)

#6 Postby HurricaneBill » Thu Sep 08, 2011 1:59 am

2005:
Super Typhoon Haitang 968mb

Typhoon Matsa 958mb

Super Typhoon Talim 966mb

Super Typhoon Nabi 937mb

2006:
Typhoon Shanshan 924mb

Typhoon Xangsane 954mb

Super Typhoon Durian 941mb

2007:
Typhoon Man-Yi 940mb

Typhoon Fitow 967mb

Typhoon Nari 948mb

Super Typhoon Wipha 928mb

Super Typhoon Krosa 934mb

2008:
Typhoon Hagupit 966mb

Super Typhoon Jangmi 901mb (measured by recon on research mission)

2009:
Typhoon Morakot 970mb

Super Typhoon Melor 965mb
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Re: Typhoon pressures since 1987 (post recon era)

#7 Postby HurricaneBill » Thu Sep 08, 2011 2:01 am

2010:
Typhoon Fanapi 941mb

Typhoon Malakas 947mb

Super Typhoon Megi 890mb (measured by recon on research mission)

2011: (so far)
Super Typhoon Songda 956mb

Typhoon Ma-On 963mb

Super Typhoon Muifa 955mb
Last edited by HurricaneBill on Sat Sep 10, 2011 7:36 pm, edited 1 time in total.
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#8 Postby Chacor » Thu Sep 08, 2011 4:19 am

There were recon flights into Linfa and Chan-hom in 2003. A quick Google search shows a 983 mb (extrap) VDM into Linfa, but I can't find one for Chan-hom.
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Re: Typhoon pressures since 1987 (post recon era)

#9 Postby euro6208 » Fri Sep 09, 2011 8:38 pm

truly astonishing yet very mysterious :eek:
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Re: Typhoon pressures since 1987 (post recon era)

#10 Postby P.K. » Sat Sep 10, 2011 5:37 am

HurricaneBill wrote:2010:
Super Typhoon Megi 902mb (measured by recon on research mission)


Megi was measured at 890hPa by a dropsonde and that was before it was quite at its peak hence the 885hPa in the following advisories.
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#11 Postby djones65 » Sat Sep 10, 2011 7:45 am

Bill,

You have spent a lot of time compiling this data and I appreciate it. Good job!
However, can you possibly identify what recorded those pressures? I mean was it a buoy and if possible the date(s)? Or was it a land station?
I know they estimate a lot from satellite imagery and peripheral synoptic reports from the islands. So, precise pressures in these WestPac cyclones appear to be a thing of the past since recon stopped nearly a quarter century ago. Obviously there are going to be a few rare instances in which a cyclone will directly go over an island or land station and we will have direct and accurate information on pressure as well as winds, but I was hoping if you have time you could add the date(s) those pressures (and time if possible) as well as the recording source. Was it a buoy or a ship report? Was it a land station? If I knew the source and the site of the met station would help me understand if this was the minimum pressure of the cyclone or whether the pressure was outside the eye thereby meaning the actual minimum pressure could be extrapolated or estimated based on distance and wind speed. I hope that made sense.
Good job though! I truly appreciate your hard work and your efforts! Have a good weekend!
David
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Re:

#12 Postby HurricaneBill » Sat Sep 10, 2011 7:35 pm

djones65 wrote:Bill,

You have spent a lot of time compiling this data and I appreciate it. Good job!
However, can you possibly identify what recorded those pressures? I mean was it a buoy and if possible the date(s)? Or was it a land station?
I know they estimate a lot from satellite imagery and peripheral synoptic reports from the islands. So, precise pressures in these WestPac cyclones appear to be a thing of the past since recon stopped nearly a quarter century ago. Obviously there are going to be a few rare instances in which a cyclone will directly go over an island or land station and we will have direct and accurate information on pressure as well as winds, but I was hoping if you have time you could add the date(s) those pressures (and time if possible) as well as the recording source. Was it a buoy or a ship report? Was it a land station? If I knew the source and the site of the met station would help me understand if this was the minimum pressure of the cyclone or whether the pressure was outside the eye thereby meaning the actual minimum pressure could be extrapolated or estimated based on distance and wind speed. I hope that made sense.
Good job though! I truly appreciate your hard work and your efforts! Have a good weekend!
David


Dave, the vast majority are from land stations.

My sources:
Weather Underground
JTWC Annual Reports
Gary Padgett's Monthly Tropical Cyclone Summaries
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Re: Typhoon pressures since 1987 (post recon era)

#13 Postby euro6208 » Sat Sep 10, 2011 9:06 pm

:eek: amazing to see those super typhoons that got penetrated by recon peak near 900 mb or lower while others estimated are way too high. imagine if all of them got penetrated...
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Re: Typhoon pressures since 1987 (post recon era)

#14 Postby Typhoon Hunter » Sat Sep 10, 2011 11:35 pm

Great stuff Bill! We're so very lucky that recon flew into Megi!

I believe Shanshan had measured 919hPa on Iriomote island in 2006. Unusual for JMA to have a peak pressure not divisible by 5. Wish I was there for that one:

http://en.wikipedia.org/wiki/File:Shanshan_over_Iriomote_at_peak_2006-09-15.jpg
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Re: Typhoon pressures since 1987 (post recon era)

#15 Postby mrbagyo » Sun Sep 12, 2021 8:30 am

List of events with recorded MSLP below 940 hPa

1987
Super Typhoon Nina - 909.5 hPa (Recorded by Station in Legazpi City, Albay) - current national record low in Philippines

2005
Typhoon Longwang - 924.5 hP a (interpolated based on data gathered by a UAV "Aerosonde"

2012
Typhoon Bolaven - 934.3 hPa - Reported by a station in Nago, Okinawa

Super Typhoon Sanba - 939.4 hPa - Reported by a station in Nago, Okinawa

2013
Super Typhoon Usagi - 922.7 hPa - recorded at Basco Radar site

Super Typhoon Haiyan - 910 hPa* - recorded by station in Guiuan Samar - *this is station pressure

2014
Super Typhoon Rammasun - 899.2 hPa - recorded by an AWS in Quizou Island

2015
Super Typhoon Soudelor - 939 hPa - recorded in Saipan during the passage of the typhoon's extremely small micro eye

2016
Super Typhoon Nepartak - 911.5 hPa - recorded by NTU 2 Buoy near Orchid island
"We have recovered the barometer at NTU2 during a buoy service cruise in early August and sent it to the Taiwan's Central Weather Bureau for calibrating the pressure sensor. After a carefully calibration procedure, we corrected the pressure data and obtained the lowest atmospheric pressure of 911.5 hPa instead of 897 hPa when the center of Nepartak was the closest to NTU2.”

Super Typhoon Meranti - 877.9 hPa? (unverified) - recorded by a DOST-ASTI Automatic Weather Station (AWS) at Itabayat Municipal Hall. A 1700z SYNOP from Itbayat Station reported 933.6 hPa followed by a mysterious 983 hPa reading at 1800z (which is believed by some as an error and suggested that it's actually 883 hPa?)

Typhoon Malakas - 936.9 hPa - recorded by station in Yonagunijima


2017
Super Typhoon Lan - 925 hPa - observed via dropsonde by a rare eye penetration by Japanese reconnaissance (T-PARCII)

2018
Super Typhoon Trami - 918.8 hPa - observed via dropsonde (T-PARCII)

Super Typhoon Mangkhut - 936.2 hPa - measured by an AWS in Gattaran, Cagayan Province despite being way inland from the landfall point.

Super Typhoon Yutu - 921.7 hPa - eyewall pressure recorded by a barometer set up by Dr. Mark Lander in Saipan

2020
Super Typhoon Haishen - 919 hPa - recorded by a buoy

Super Typhoon Goni - 912.1 hPa - recorded by manned station in Virac, Catanduanes

2021

Super Typhoon Chanthu - 927.8 hPa - recorded at the Basco Synoptic Station (98134)

Super Typhoon Mindulle - 932.4 hPa - recorded via dropsonde by a reconnaissance mission of Nagoya University / University of the Ryukyus (T-PARCII)
Last edited by mrbagyo on Tue Apr 05, 2022 1:51 am, edited 20 times in total.
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Re: Typhoon pressures since 1987 (post recon era)

#16 Postby Category5Kaiju » Sun Sep 12, 2021 10:42 am

Very generic question, but is there a reason why the WPAC mets do not fly recon into typhoons?
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Re: Typhoon pressures since 1987 (post recon era)

#17 Postby mrbagyo » Sun Sep 12, 2021 11:13 am

Category5Kaiju wrote:Very generic question, but is there a reason why the WPAC mets do not fly recon into typhoons?


Funding (lack of)
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Re: Typhoon pressures since 1987 (post recon era)

#18 Postby Foxfires » Sun Dec 26, 2021 11:58 pm

Ok so there was this recon mission into Typhoon Jangmi 2008 that measured... 901mb I think? something like that
can anyone do me a favor and link me to a source for that?
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Re: Typhoon pressures since 1987 (post recon era)

#19 Postby mrbagyo » Mon Dec 27, 2021 12:16 am

Foxfires wrote:Ok so there was this recon mission into Typhoon Jangmi 2008 that measured... 901mb I think? something like that
can anyone do me a favor and link me to a source for that?


I think 901 hPa was extrapolated.



the one stated on the VDM was 906 hPa
http://www.hkww.org/weather/2008/review/review200819w.html
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Re: Typhoon pressures since 1987 (post recon era)

#20 Postby Foxfires » Mon Dec 27, 2021 1:06 am

mrbagyo wrote:
Foxfires wrote:Ok so there was this recon mission into Typhoon Jangmi 2008 that measured... 901mb I think? something like that
can anyone do me a favor and link me to a source for that?


I think 901 hPa was extrapolated.



the one stated on the VDM was 906 hPa
http://www.hkww.org/weather/2008/review/review200819w.html


ah okay thanks
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