? about Hainan

[Dave C]

Was wondering if they ever measured a pressure when it crossed over Ormac City?

[xtyphooncyclonex]

It's Haiyan not Hainan

Pressure of Haiyan in Ormoc City was about 950 mb if I remember from the videos

[euro6208]

Was wondering if they ever measured a pressure when it crossed over Ormac City?

Why Ormoc City? Do you have any family or friends there?

[Dave C]

No. just curious.

[xtyphooncyclonex]

Friends and family lost a lot from the storm here in Ormoc

[dexterlabio]

If I remember correctly the only readings that would support a sub-900 mb were measured in Guiuan and Tolosa, Leyte. Pressure in Ormoc City was as high as 950mb when the eye was passing a few kilometers off the city. If we were to believe those readings then it clearly shows how steep the pressure gradient of Haiyan was. The Navier-Stokes equation would tell us that a huge pressure difference would mean intense wind velocity.

I wish getting the best estimate of Haiyan's highest wind speed over landfall will be as easy as getting plot points or "windicators" along the track and getting the respective pressures and distance between these points, then using an effective equation derived from the Navier-Stokes equation to come up with the wind velocity in the eyewall (more like an interpolation). I know this sounds silly in the meteorological aspect because I am treating it like a basic fluid dynamics problem.

[hurricanehunter69]

Man, that was a bad ass storm! I remember that morning looking at it make landfall on radar...I definitely felt a sense of dread for those poor people!

[CrazyC83]

The best estimated, which I calculated using the Schloemer equation relative to Tacloban pressures, is about 897mb when it made that landfall. Most likely it was a little lower when it was approaching Guiuan about 6 hours later - in the high 880s or low 890s.

[xtyphooncyclonex]

The best estimated, which I calculated using the Schloemer equation relative to Tacloban pressures, is about 897mb when it made that landfall. Most likely it was a little lower when it was approaching Guiuan about 6 hours later - in the high 880s or low 890s.

Impossible. Ormoc never went below 920 mb maybe just 930

I went to the city last April fyi

[euro6208]

I'd say easily in the low 900's after it's landfall of sub -900 in Guiuan and Leyte....

[Alyono]

don't think it was lower than Megi to be honest, though I believe it did have higher winds than Megi (and recon measured 175 kt SURFACE winds in Megi via SFMR)

When we had recon in 2008 and 2010, the pressures were very similar to Atlantic pressures. It is my belief, that typhoons do have for the most part a similar P/W as do Atlantic and EPAC canes. The exception would be for monsoon trough systems. However, the Atlantic also has a warped P/W for Caribbean monsoon trough systems like Wilma

[euro6208]

don't think it was lower than Megi to be honest, though I believe it did have higher winds than Megi (and recon measured 175 kt SURFACE winds in Megi via SFMR)

When we had recon in 2008 and 2010, the pressures were very similar to Atlantic pressures. It is my belief, that typhoons do have for the most part a similar P/W as do Atlantic and EPAC canes. The exception would be for monsoon trough systems. However, the Atlantic also has a warped P/W for Caribbean monsoon trough systems like Wilma

Do you have any images of Megi at peak of 175 knots?

[Alyono]

don't think it was lower than Megi to be honest, though I believe it did have higher winds than Megi (and recon measured 175 kt SURFACE winds in Megi via SFMR)

When we had recon in 2008 and 2010, the pressures were very similar to Atlantic pressures. It is my belief, that typhoons do have for the most part a similar P/W as do Atlantic and EPAC canes. The exception would be for monsoon trough systems. However, the Atlantic also has a warped P/W for Caribbean monsoon trough systems like Wilma

Do you have any images of Megi at peak of 175 knots?

you can go back through the NRL archives