ATL: ISAAC - Post-Tropical - Discussion

[Fyzn94]

That huge band that's coming in sure looks crispy.

[JtSmarts]

I'm impressed with Isaac tonight, 968 pressure and 96 kt flight level winds, WOW. A far cry from the past few days.

[WeatherGuesser]

There's a far outer band that's already dumped about 3-4" of rain up near Columbia, MS.

[BigEasy]

pressure down to 967.3 mbs according to recon now, still strengthening in the swamps

Possible, like I mentioned earlier and now it is happening according to recon. A good learning experience for many that do not live here, or have not been here to see for themselves, as far as the topo of the land.

[Puddinhead]

Cantore confirms landfall, just SW of the Mouth of the Mississippi...No city has been named, yet. (which is basically marsh). 2nd landfall soon.

I'd call that the city of Marshville. Okay, that was bad.

The water vapor imagery is interesting this evening....a lot of dry air in central MS and AL that is eating away at those feeder bands as they move ashore. Isaac is doing a remarkable job of moistening the atmosphere, but it's the same story with this fellow. Dry air remains a hindrance to greater destruction that he might otherwise cause through tornadic activity, etcetera.

The highway (23) goes down as far as Venice, which is the last of what you'd call a "real" community...fishing marinas, camps, oilfield facilities mostly with about 400 or so residents. Below that at the "Head of Passes" (where the passes began to branch out) is Pilottown, where the River pilots operate out of and accessible only by water. The landfall was probably right about at a spot where historically the community of Burrwood once existed on Southwest Pass. It was created by the US Army Corps of Engineers before WWII as a Navy base to command that pass of the Mississippi, and after the war was used as a forward observation post for the Weather Bureau for hurricanes. If you check on archival stories of hurricanes from the 40s and 50s into the early 60s you often see mention of a landfall at Burrwood or at least of observations reported from Burrwood. The town is long gone now; most of the land it occupied is now under the Gulf of Mexico.

Just an observation...just as I remember from childhood, these things are a lot scarier now as it's getting dark.

[bob rulz]

This could easily continue to intensify for a few more hours...it's really skirting the coast in areas where there probably is barely even a coast anymore.

It's a very good thing that this hurricane didn't get its act together earlier. We would be looking at a monster bearing down on New Orleans.

[SunnyThoughts]

TWC talking live with Hurricane hunters right now

[thetraveler]

Paul who is flying into Isaac just said on TWC that it looks like its moving at 340 degrees.

[Buckeye05]

Did the hurricane hunter say the winds are down to 60-70?

[KimmieLa]

Did the hurricane hunter say the winds are down to 60-70?

No, he was talking about how the winds are not falling off the further out from the center they went, he was giving an example.

[Blinhart]

And they were flying at 10000 ft.

[BigEasy]

Isaac, for all practical puroses, is still over water.

[vbhoutex]

Checked all of the buoys that are reporting in the area. It was technically a landfall as stated over SW Pass or whatever it is called. Based on the buoys Issac is back over water for about half an hour(my guess)before he makes 2nd US landfall SE of Houma, unless of course he continues West as opposed to stair stepping.

[stormreader]

I'm impressed with Isaac tonight, 968 pressure and 96 kt flight level winds, WOW. A far cry from the past few days.

Me too. Look at this shortwave image.

[hurricanes1234]

Still has some time over water. Around 90 minutes or so before the eye moves completely inland.

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[Shawee]

Amazing contrast on local TV coverage just now...one reporter at New Orleans lakefront, where it looked like the footage Weather Channel uses to open there Tropical Updates: winds howling, breaking off the tops of the huge waves as they break over the top of the seawall into howling spray, reporter pointing out water a few feet up a picnic shelter house....over in Mandeville on the north shore of the lake, a different reporter was standing in front of Lake Pontchartrain which was perfectly flat with barely a ripple. That will change later on tonight, I'm sure.

Can't hear the television in the next room from here, but I'm not exactly sure why they're keeping video footage of the 17th Street canal on for so long. I did catch that the floodgates at 17th Street Canal, Orleans Canal, London Avenue Canal, and IHNC (Industrial Canal) have all been closed. These are all new since Katrina. This is a good thing for me, as rising storm surge backing up these canals is what submerged me for Katrina, but the problem for me is that when they close these gates they rely on new pumps they've installed at the gates to lift the rainwater in the canals (that's where the rainwater that falls on New Orleans' streets is pumped to) over the gates and into the elevated Lake Pontchartrain. So I'm supposed to be less vulnerable to storm surge flooding, but more vulnerable to rainwater flooding.

Yes you are and like all other residents in the city.

It is putting all of your marbles in one bag, so to speak. It isn't the best design. The correct, better engineered desgn. was to relocate the pumping stations to the mouth of each outlet canal so you wouldn't need to have a dam at the end, like they have constructed and have made the older pump stations at the mercy of the newly installed pumps at the dams at the end of the canals.

Sounds like they created one big bowl around New Orleans that will now fill with rain water.

Actually New Oreans is one of the most defendable cities inthe country... The pump situation is always presented a though!

[Frank P]

radar loops looks like he hit a wall.. does not appear to be moving much at all, maybe just an illusion or a temp stall, who knows... gotta be proud of the comeback he made today... my opinion only...

after further review... and delirious from looking at loops, I think I might see the hint of the NW motion.. hard to tell...

[windnrain]

So... from what I can tell, it has started a westward wobble. Will this be a jog? Could this be what the models have been predicting? If so, it would hug the coast, that would be bad.

[Meteorcane]

Grand Isle 64 mph sustained 83 gust.

[windnrain]

Mississippi river.