Tropical Cyclone-Related Anniversaries [Five-year Intervals Only]

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Imran_doomhaMwx
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Tropical Cyclone-Related Anniversaries [Five-year Intervals Only]

#1 Postby Imran_doomhaMwx » Sun Nov 19, 2017 11:37 am

Let me start with:

November 19, 1977 (40yrs ago) -- A powerful unnamed Category 4 Cyclone struck the Indian state of Andhra Pradesh at this time of the year 40 years ago, later dubbed as the "1977 Andhra Pradesh Cyclone" or the "Diviseema Cyclone".

The cyclone claimed the lives of 10,000-15,000 people as reported by the government, including the thousands of deaths that occurred in Diviseema island after it was inundated by a 20ft(6m) high storm surge. However, another source claimed that the true number of people killed was at least 50,000 and that the government intentionally underreported the death toll.
https://en.wikipedia.org/wiki/1977_Andh ... sh_cyclone

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Re: Tropical Cyclone-Related Anniversaries [Five-year Intervals Only]

#2 Postby Imran_doomhaMwx » Tue Nov 21, 2017 5:53 am

November 21, 1992 (25yrs ago) -- 25 years ago, Category 5 SuperTyphoon "Gay" (not to be confused with 1989's TC Gay) reached peak intensity over the open waters of the NW Pacific, with max sustained winds of 295kph as estimated by JTWC, and a min central pressure of 900mb by JMA.
Two other Tropical Cyclones, which were both already weakening at that time, can also be seen on this satellite image. Namely, "Hunt" to the NW of Gay, and "Forrest" over the northern Bay of Bengal (the latter also originated from the NW Pacific basin).

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(IR satellite image from Digital-Typhoon -- 11/21/1992 00Z)

1992's STY Gay is notable as it is one of those TCs suspected to be stronger/more intense than 1979's STY "Tip". However, unlike Tip which had a recon aircraft take actual measurements of its strength, Gay's were only estimates, thus making it hard/impossible to confirm if it was indeed stronger than Tip.
Gay affected the Marshall islands as a typhoon earlier in its existence, and passed over Guam about two days after reaching peak intensity, but still as a strong Typhoon. It then recurved and also affected parts of Japan as an ExtraTropical system.
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Re: Tropical Cyclone-Related Anniversaries [Five-year Intervals Only]

#3 Postby euro6208 » Tue Nov 21, 2017 5:59 am

Imran_doomhaMwx wrote:November 21, 1992 (25yrs ago) -- 25 years ago, Category 5 SuperTyphoon "Gay" (not to be confused with 1989's TC Gay) reached peak intensity over the open waters of the NW Pacific, with max sustained winds of 295kph as estimated by JTWC, and a min central pressure of 900mb by JMA.
Two other Tropical Cyclones, which were both already weakening at that time, can also be seen on this satellite image. Namely, "Hunt" to the NW of Gay, and "Forrest" over the northern Bay of Bengal (the latter also originated from the NW Pacific basin).


(IR satellite image from Digital-Typhoon -- 11/21/1992 00Z)

1992's STY Gay is notable as it is one of those TCs suspected to be stronger/more intense than. However, unlike Tip which had a recon aircraft take actual measurements of its strength, Gay's were only estimates, thus making it hard/impossible to confirm if it was indeed stronger than Tip.
Gay affected the Marshall islands as a typhoon earlier in its existence, and passed over Guam about two days after reaching peak intensity, but still as a strong Typhoon. It then recurved and also affected parts of Japan as an ExtraTropical system.


As a matter of fact, it's dvorak reached 8.7 on the scale. Something Tip was unable to do. Yeah estimates but it's presentation is much more impressive.
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Re: Tropical Cyclone-Related Anniversaries [Five-year Intervals Only]

#4 Postby Alyono » Tue Nov 21, 2017 3:35 pm

it reached 8.7 on a PROTOTYPE auto Dvorak technique, which has since been refined. No way can one make an apples to apples comparison to today's techniques
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Re: Tropical Cyclone-Related Anniversaries [Five-year Intervals Only]

#5 Postby Imran_doomhaMwx » Sat Nov 25, 2017 6:53 am

November 25, 1987 (30 years ago) -- Tropical Cyclone "Nina" (locally named "Sisang" in the Philippines) slammed the Philippines' Bicol region as a Category 5 SuperTyphoon. STY Nina caused widespread damage to much of the northern Philippines, and killed around 800 people in the country.
https://en.wikipedia.org/wiki/Typhoon_Nina_(1987)

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(Satellite images from Digital-Typhoon and NOAA/Wiki -- 11/25/1987)
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Re: Tropical Cyclone-Related Anniversaries [Five-year Intervals Only]

#6 Postby euro6208 » Sat Nov 25, 2017 7:44 am

Imran_doomhaMwx wrote:November 25, 1987 (30 years ago) -- Tropical Cyclone "Nina" (locally named "Sisang" in the Philippines) slammed the Philippines' Bicol region as a Category 5 SuperTyphoon. STY Nina caused widespread damage to much of the northern Philippines, and killed around 800 people in the country.
https://en.wikipedia.org/wiki/Typhoon_Nina_(1987)


(Satellite images from Digital-Typhoon and NOAA/Wiki -- 11/25/1987)


The strongest typhoon of the season and right after recon ended...I know social media wasn't active back then but i hate to think what if recon ended right in the middle of the 2018 season after reports of extraordinarily low pressures and high winds typhoons suddenly became weaker due to the absence of recon and now relied on satellite. Global cooling? :lol: The meteorological community would be very sad.
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Re: Tropical Cyclone-Related Anniversaries [Five-year Intervals Only]

#7 Postby FireRat » Mon Nov 27, 2017 12:46 am

What a beautiful yet monstrous typhoon at landfall! Almost looks like Mitch at peak strength in the other side of the world. What a beast! Imagine the conditions at landfall there, must have been truly catastrophic. :double:
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Re: Tropical Cyclone-Related Anniversaries [Five-year Intervals Only]

#8 Postby NotoSans » Mon Nov 27, 2017 1:57 am

A minimum pressure of 909.5 hPa was recorded in the Philippines during the eye passage of Typhoon Nina, which would suggest a peak intensity of approximately 900 hPa. AFAIK it should also be the lowest pressure recorded in the Philippines (Typhoon Haiyan was 910 hPa). Pressure wise, Betty would be a stronger storm, and perhaps for wind speed as well because Betty was a smaller system. FYI intensity estimates from JTWC for Betty and Nina were 140 and 145 kt, respectively, and the former was probably an underestimation.

http://www.typhoon2000.ph/karl/
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Re: Tropical Cyclone-Related Anniversaries [Five-year Intervals Only]

#9 Postby mrbagyo » Tue Nov 28, 2017 12:27 pm

NotoSans wrote:A minimum pressure of 909.5 hPa was recorded in the Philippines during the eye passage of Typhoon Nina, which would suggest a peak intensity of approximately 900 hPa. AFAIK it should also be the lowest pressure recorded in the Philippines (Typhoon Haiyan was 910 hPa). Pressure wise, Betty would be a stronger storm, and perhaps for wind speed as well because Betty was a smaller system. FYI intensity estimates from JTWC for Betty and Nina were 140 and 145 kt, respectively, and the former was probably an underestimation.

http://www.typhoon2000.ph/karl/


why's JMA not updating their best track? 930 mb peak? Smhhh..

Betty was reanalyzed by Knaff as a 170 knot system at peak, JTWC clearly underestimated it and it's also highly probable that it was a cat 5 when it crossed Samar.

Added info : a barometric pressure of 911mb was recorded in Fuga Islands in Cagayan on August of 1922 - that's according to records compiled by Selga
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Re: Tropical Cyclone-Related Anniversaries [Five-year Intervals Only]

#10 Postby 1900hurricane » Sun Dec 03, 2017 10:39 am

December 3rd, 2012 [five years ago]: Super Typhoon Bopha reached peak intensity and then immediately made landfall along the coast of the Philippine island of Mindanao. The rare low latitude howler was the most significant landfall on the island since at least Kate in 1970. The system caused more than 1000 deaths in the Philippines.

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Re: Tropical Cyclone-Related Anniversaries [Five-year Intervals Only]

#11 Postby Imran_doomhaMwx » Fri Dec 08, 2017 1:05 am

December 8, 2002 (15 years ago) -- Category 4 SuperTyphoon "Pongsona" struck the island of Guam, causing extensive damage in the US territory and in some other parts of the Marianas. It is the last major typhoon to directly hit Guam.
https://en.wikipedia.org/wiki/Typhoon_Pongsona

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Photos: NWS Guam (FB) ... https://www.facebook.com/NWSGuam/posts/1554892977926298
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Re: Tropical Cyclone-Related Anniversaries [Five-year Intervals Only]

#12 Postby euro6208 » Fri Dec 08, 2017 8:15 am

Wow 15 years already. Since then Guam has been very lucky with many near misses despite being in the prime spot in the world's most active basin. We are just a dot anyways. :lol:
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