CAT 5 Hurricane Dean - Archived threads

[CrazyC83]

916 ties the lowest ever in a non-Cat 5 storm (matching Opal).

[tallywx]

916 ties the lowest ever in a non-Cat 5 storm (matching Opal).

not exactly. Best track shows that Hurricane Rita was at 914 mb with 145-mph winds, followed by 915 mb with 140-mph winds. Further, Katrina nearing landfall was 913 mb with 145-mph winds.

[CronkPSU]

916 ties the lowest ever in a non-Cat 5 storm (matching Opal).

not exactly. Best track shows that Hurricane Rita was at 914 mb with 145-mph winds, followed by 915 mb with 140-mph winds. Further, Katrina nearing landfall was 913 mb with 145-mph winds.

yes but they reached cat 5 status at one point or another in their track

[RL3AO]

916 ties the lowest ever in a non-Cat 5 storm (matching Opal).

not exactly. Best track shows that Hurricane Rita was at 914 mb with 145-mph winds, followed by 915 mb with 140-mph winds. Further, Katrina nearing landfall was 913 mb with 145-mph winds.

But they were both Cat 5s at one point. Wilma trumps them both with 894mb at 155mph. But we are just talking about storms that were never Cat 5s.

[tallywx]

916 ties the lowest ever in a non-Cat 5 storm (matching Opal).

not exactly. Best track shows that Hurricane Rita was at 914 mb with 145-mph winds, followed by 915 mb with 140-mph winds. Further, Katrina nearing landfall was 913 mb with 145-mph winds.

yes but they reached cat 5 status at one point or another in their track

true. what is the lowest-recorded central pressure in the Atlantic to not be associated with cat-5 status at the time? would that be Katrina's 913 mb?

[KWT]

Providing Dean stays cat-4 it'll have the joint deepest pressure for a system that never achieved cat-5 in its life, tallywx, both Rita and Katrina went cat-5 at one point, Opal didn't so remains the lowest pressure recorded by a system that never became a cat-5, if that makes any sense!

[RL3AO]

true. what is the lowest-recorded central pressure in the Atlantic to not be associated with cat-5 status at the time? would that be Katrina's 913 mb?

Wilma 894mb Cat 4.

[CrazyC83]

Providing Dean stays cat-4 it'll have the joint deepest pressure for a system that never achieved cat-5 in its life, tallywx, both Rita and Katrina went cat-5 at one point, Opal didn't so remains the lowest pressure recorded by a system that never became a cat-5, if that makes any sense!

The most intense to never get past Cat 3 (Isidore 2002, 934mb) was also in that area...

[Stratusxpeye]

The NHC has nailed this storm. They were a little slow the first 24 hours or so, but after that they were incredible. My hat goes off to an incredible job well done by the NHC on Dean.

You mean the GFS? The GFS had this thing nailed when it was still in Africa!

[superfly]

The NHC has nailed this storm. They were a little slow the first 24 hours or so, but after that they were incredible. My hat goes off to an incredible job well done by the NHC on Dean.

You mean the GFS? The GFS had this thing nailed when it was still in Africa!

Actually didn't it have Dean recurving/hitting the east coast at one point?

[JonathanBelles]

The nasa Landing tracks bring Endeavour right over dean, will they have extra turbulence or problems from it?

Orbit 201:
http://www.nasa.gov/images/content/1869 ... 1_long.gif

Orbit 202: (directly over dean)
http://www.nasa.gov/images/content/1869 ... 2_long.gif

[Annie Oakley]

Love the discourse, and hope you don't get mad at me but I can't quit staring at that latest picture of Dean! Thanks to storm2k for all the coverage and information. Priceless!

[marcane_1973]

With a pressure as low as 916mb and only 150 mph winds I bet my bottom $ that it has to do with concentric eyewalls since there has not been much research on it. If Dean had one intense established eyewall with that pressure I bet his sustained winds would be anywhere from 160 to 180mph easily.

[fasterdisaster]

Concentric eyewalls really has nothing to do with strength. It's merely when the inner eyewall collapses that any slight weakening happens.

[Derek Ortt]

is that 10 dead in jamaica or 10 total dead in all affected states

[JonathanBelles]

Wikipedia has 9 dead in the Carib.

[tropicwatch]

Observations being reported now.

000
URNT11 KNHC 202325
97779 23200 20188 84509 30500 11086 11119 /3967
RMK AF303 1404A DEAN OB 29
SWS = 082KTS

[Matt-hurricanewatcher]

I "would bet 5 dollars that this never becomes a cat5. Why because every time it go's through a EWRC the pressure field loosens and the eye wall never has a chance to focus its full power into wind. So we have a 150 mph storm instead of 160-165 mph storm like it would be if it did so. It will be over land in 24 hours, and it will start pulling in dry land air by tomarrow morning.

[Sanibel]

Nobody is claiming that there aren't important structural differences between a 918 mb Cat 4 and a small 945 mb one. The point I (and others) have been making is that pressure is a very small factor compared to others when accounting for storm surge. You claimed otherwise, and I'm saying you are simply incorrect. It's nothing personal, and I felt I have also been friendly.

Then kindly explain to me why the Labor Day Hurricane, at abnormally low pressure, was even smaller than Charley, yet managed to drive a 12 foot surge over (I believe it was) Matecumbe Key? A sea front with a 3000 foot depth drop just offshore, something already known to stem surge in Miami, while shallow Charlotte Harbor had no surge during Charley. I daresay, with all your textbook factors countered by the incongruencies between the relevant factors and results between those two storms that the only difference was indeed pressure - Directly related to surge. Enough to counter your stated variables (3000 foot Florida Straits vs 20 foot Charlotte Harbor).

I'm not trying to pick a fight, but excuse me if I find "this is annoying," and "when some people try to use technical terms they don't understand, "go get some books and learn" less than friendly (or even board rules).

I won't go further into the fact that 'low pressure pan' is common knowledge in meteorology and someone challenged the term. It was explained by Derek during Katrina.

But besides all this, the main point is that pressure is probably more important than windspeed with such storms as Katrina and Dean.

[lrak]

why is the NE quadrant flying apart like that? Is that the high pressure eating at it?