List of Record Lowest Central Pressures Ever?

[euro6208]

Aslkahuna I remember in a past thread that you think STY June in 1975 is stronger than STY Tip because of it's 3 mile eye and that recon didn't measure the lowest central pressure of that storm? You said it's somewhere between 870-860?

I'm very fascinated by post recon storms like the 1997 STYs and STY Angela.

[Chacor]

That's interesting. What had been the estimated pressure of Jangmi before the recon measurement?

Recon found 906 mbar per a VDM sent at 0755 UTC September 27, 2008. This same VDM reported 163 kt FL winds.
SAB Dvorak estimates at the time were T7.0.



At 0600Z, JMA issued bulletin at 915 hPa/105 kt.
At 1200Z, JMA issued bulletin at 910 hPa/115 kt (making it the strongest storm in terms of windspeed since Angela 1995).
At 1200Z, HKO issued bulletin at 900 hPa/125 kt (recon had found an extrapolated pressure of 901.2 mbar).

JMA did not lower pressure to 905 operationally; post-season best-track officially put the pressure at 905 at 1200Z to match the VDM.

[P.K.]

MONICA......

Monica is listed at around 916hPa in the BT (Not got access to it here).

Of interest we've had an ET system in the N Atlantic within the last 20 years which would just about make the N Atlantic list posted earlier which just had TCs. The Braer Storm in 1993 dropped to circa 914hPa

[euro6208]

is there anyway japan, china, and possibly guam since it's a u.s territory can demand the return of recon to the west pacific?

[KWT]

Yeah PK that was an insane system, gave blizzards later on in some parts of N.England from a westerly...a mental storm!

Thats an impressive storm there Chacor, 906mbs is not bad, that'd get into the top 10 of the Atl list!

[euro6208]

i think the list for the western pacific should be like this

Angela (1995) 840's
Zeb (1998) 850's
STY's of 1997 850's to 860's
Gay (1992) 860 to 869
STY's since 1987 860's to 869's
Tip -870

All the STY's since 1987 that reach an 8.0 on the dvorak scale (alot of them) possibly between 870 to 890!

[Ptarmigan]

i think the list for the western pacific should be like this

Angela (1995) 840's
Zeb (1998) 850's
STY's of 1997 850's to 860's
Gay (1992) 860 to 869
STY's since 1987 860's to 869's
Tip -870

All the STY's since 1987 that reach an 8.0 on the dvorak scale (alot of them) possibly between 870 to 890!

Angela looked rather small from what I remember. Zeb was quite large. Gay reminded me of Wilma. It would interesting to measure those typhoons you named.

[Aslkahuna]

The lowest pressure measured in June was measured under the inner edge of the eyewall-not where you would usually find the lowest pressure of a Tropical Cyclone. The eye was barely 3 nautical miles across and the turning radius of the WC130 is 1.5 nautical miles. I talked to the crew that flew that mission and they said that they could not keep the aircraft in the eye. From the inner edge to the center of the eye the pressure would probably drop 5-10 mb so June could have been the same as Tip or 5 mb lower. However, we'll never know. June was a large storm like Tip though not as large which brings up the question of sustained winds since size affects the gradient which determines the max winds. The wind/pressure relationships so nicely derived years ago are now in doubt based upon recent events. The 905 pressure for Jangmai would suggest a 1 minute average of 135 kt which is 83% of the H7 FL winds of 163 kt and 86% of those winds at a sustained of 140kt. Although the Dvorak is supposed to be objective, there is a certain amount of subjectivity in the technique. Additionally, latest studies don't show a direct relationship between pressures and the Dvorak rating. ADT estimates had Monica's pressure at 869 mb yet there was no direct evidence to support this claim. Based upon in situ measurements of tornado pressures it's realistic the think that the lowest sealevel pressures possible are likely to be around 150mb below standard or 863 mb

Steve


Steve

[Recurve]

Remember too that all those pressures are very interesting academically, but #3 in the Atlantic -- 892 mb -- was at landfall around Craig Key. Still the lowest pressure ever for a US landfall, if I'm not mistaken...and I know someone will correct me if I am.

[BrianD]

WOAH (1995) Angela hit the 840's????? Is that conclusive with supporting data? That just seems next to impossible to me but then again mother nature has surely surprised us all

[Chacor]

No, that is that one poster's personal opinion. That should have been made clear.

[BrianD]

OK I was wondering about that thanks for clarifying

[Aslkahuna]

JTWC estimated Angela's pressure as 879 mb at its lowest. Taking into consideration the satellite appearance and time of year (Angela was an early November storm-a time when ambient pressures begin to rise in WPAC while Tip was in October), that looks realistic. It appears from recent storms that ADT estimates tend to give too low a pressure on strong storms. This, of course, may result from not correcting for seasonal changes in the surrounding pressures.

Steve

[euro6208]

I found it. The top 10 lowest central pressures ever recorded on earth! (ALL CONFIRMED BY RECON)

Tip 1979 870 mb West Pacific
June 1975 875 mb West Pacific
Forrest 1983 876 mb West Pacific
Nora 1973 877mb West Pacific
Ida 1956 877 mb West Pacific
Rita 1978 878 mb West Pacific
Vanessa 1984 879 mb West Pacific
Kit 1966 880 mb West Pacific
Wilma 2005 882 mb Atlantic
Irma 1971 884 mb West Pacific

Of course, this list wouldn't be like this if recon never ended in the West Pacific!

[euro6208]

Super Typhoon Megi makes it to the Top 11 with her 885 mb!

Everyday I try to imagine what if our recon never stopped in 1987, Top 100 in the WPAC?

[Ptarmigan]

Remember too that all those pressures are very interesting academically, but #3 in the Atlantic -- 892 mb -- was at landfall around Craig Key. Still the lowest pressure ever for a US landfall, if I'm not mistaken...and I know someone will correct me if I am.

I have read that the 1935 Labor Day Hurricane could of had a pressure as low as 880 mb. That would beat Wilma. I read recon measured a pressure of 876 mb in Wilma, but that was due to its small eye. Also, recon measured 882 mb in Gilbert.

[euro6208]

it's amazing to think that when we have recon available, they would find a very powerful supertyphoon with such a low pressure. Jangmi in 2008 with a pressure of near 900mb and now Megi with a pressure of 893 mb. Before this it was in the early 90's with STY Flo and Yuri with record intensity. I just wish we had recon available every year

[Macrocane]

I have read that the 1935 Labor Day Hurricane could of had a pressure as low as 880 mb. That would beat Wilma. I read recon measured a pressure of 876 mb in Wilma, but that was due to its small eye. Also, recon measured 882 mb in Gilbert.

The 882 mb were registered in Wilma, Gilbert had a central pressure of 888 mb.

[RL3AO]

For Wilma, recon measured 883mb, but there was a bit of a wind meaning it didn't hit the exact center (and it was only a 2 mi wide eye). So it was estimated down to 882.

[SouthDadeFish]

Actually I believe in Wilma the extrapolated read 881 mb, while the dropsonde measured 884 mb. However, the dropsonde reported around 20 knots of wind at the surface, so that is where the 882 mb comes from.