ATL: ISAAC - Post-Tropical - Discussion

[CronkPSU]

is that area of La like the everglades, just flat swampy area?

[LSU2001]

Yep, it's all marsh first real land is just south of NOLA. On the west side of the delta first land is grand isle
Then golden meadow but even this is very marshy with just a narrow strip of dry land.

[SunnyThoughts]

The Back Bay sits N of my house here in Biloxi and it was FULL! I am thinking maybe 5' higher not a pier was visible and water was 2-3' up the trunks of some trees quite a site wind was maybe 20-25 steady? on the bridge.

Wow Javlin, I go to back bay a LOT...be careful and good luck.

[CronkPSU]

Yep, it's all marsh

so it probably won't weaken too much anytime soon?

[thatwhichisnt]

is that area of La like the everglades, just flat swampy area?

Check Google Earth. It is all marsh. Hot and soggy marsh.

[thatwhichisnt]

Yep, it's all marsh

so it probably won't weaken too much anytime soon?

It is possible it is not done strengthening. It has more water to go through, then marsh. It wont go down in intensity till it is well inland.

[monicaei]

is that area of La like the everglades, just flat swampy area?

Not familiar with the the Everglades. The area immediately to the west of the delta is the Barataria Basin. It's mostly open water dotted with spartina marsh. There used to be significant barrier islands, they have been lost for a very long time. If you are curious, do an overlay of sat imagery from google earth over the NOAA charts (they haven't been updated in decades, but are still used to display our coast??)

[ATCcane]

Latest.

(satellite image)

Looking like it moved west?

Why do you keep pushing the west bit? There has not been any west motion for the last several hours, maybe not today at all, yet you continue to ask if it's going west? I don't understand why.

Well to be fair there is or was a smaller spin inside the larger rotation. It's recently rotated to the north on the east side of the "larger" center. It appears that's what the HH aircraft have fixed over the last hour. If in fact this is happening, the fixes over the next hour or so should be a bit west of the last two. Overall the larger circulation as a whole seems to be moving slowly off to the WNW. BTW, IM looking at a 6 hour loop of the KLIX RADAR on SimuAWIPS.

[BigEasy]

is that area of La like the everglades, just flat swampy area?

Yes, but even more sparse lnd patches. And the patches are very, very shallow in elevation. Unlike many marshe areas of the Everglades where there is some elevation. It is most marsh grass, of no more than 18 inches to 24 inches in height, in small patches.

[tolakram]

Latest Visible

[Meteorcane]

Currently Pilotown station is showing pressure of 971 mb it must be very close

[Puddinhead]

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.

[ConvergenceZone]

is that area of La like the everglades, just flat swampy area?

Check Google Earth. It is all marsh. Hot and soggy marsh.

Personal Forecast Disclaimer:
The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or storm2k.org. For official information, please refer to the NHC and NWS products.

I think it's done strengthening. Much of the outflow on land can potentially draw in dry air. (Remember this is Isaac we are talking about here).. If this was a small storm i would say that it could strengthen, but since Isaac strengthen's at a snail's pace due to its large size, I would say no more strengthening, but with a small chance of still making it to 85 mph....

[CourierPR]

Well to be fair there is or was a smaller spin inside the larger rotation. It's recently rotated to the north on the east side of the "larger" center. It appears that's what the HH aircraft have fixed over the last hour. If in fact this is happening, the fixes over the next hour or so should be a bit west of the last two. Overall the larger circulation as a whole seems to be moving slowly off to the WNW. BTW, IM looking at a 6 hour loop of the KLIX RADAR on SimuAWIPS.

Didn't the NHC state that Isaac is moving NW?

[tolakram]

Radar precip estimate so far, saved image.

[Elizabeth]

Here is a link to a pretty amazing video from Lake Ponchatrain, posted over two hours ago.

http://www.youtube.com/watch?v=QP_MdcAFD5g

And this is to the local New Orleans station, Live feed, continuous Coverage.

http://www.wwltv.com/live-stream/exempt

[Aric Dunn]

winds have come up substantially now ... sustained in the 50s

[ROCK]

not in a hurry to get on shore it seems...

[tolakram]

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.

Heavy squalls just south and south east of you. Looks to enter the NO area in 30 minutes or so.

saved image

[Anthysteg00]

is that area of La like the everglades, just flat swampy area?

Check Google Earth. It is all marsh. Hot and soggy marsh.

Personal Forecast Disclaimer:
The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or storm2k.org. For official information, please refer to the NHC and NWS products.

I think it's done strengthening. Much of the outflow on land can potentially draw in dry air. (Remember this is Isaac we are talking about here).. If this was a small storm i would say that it could strengthen, but since Isaac strengthen's at a snail's pace due to its large size, I would say no more strengthening, but with a small chance of still making it to 85 mph....

Very doubtful, Isaac still appears to be deepening with no end in sight. The marshlands off SE LA won't do much to hurt it. You seemed to be something of a naysayer earlier in the game would you say Isaac has exceeded your expectations?

98L looks to be a potential player down the road and TD 11 looks nice. I am wondering if perhaps you're backing off on the claims you have made in the past the basin is overall unfavorable yet we appear to be almost on pace with 2005? I do realize those it's the quality of the storm not quantity but 11 is impressive....most people predicted 12 all season....