ATL GUSTAV: Tropical Depression - Discussion

[cpdaman]

absolutely storm center ......thing was i changed from mobile to New orleans and the motion was much clearer

sw pass near grand isle gusting to 94 KNOTS wow

http://tidesonline.nos.noaa.gov/geographic.html

[Normandy]

Obs from SW pass are pretty impressive, and suggest this cyclone has some severe gusts. Almost MH gusts and not in the eyewall.

[KWT]

Pretty much NW stormcenter, though the last radar return is suggestive of a motion back towards the WNW...

I'm still thinking this is heading into Houma, Stake Island may yet get into the NE eyewall and if it does then they are going to get cat-2/3 conditions...don't be surprised to see gusts upto 100-110kts down there.

[jlauderdal]

double play on tornado warnings

[Stormcenter]

Here is a different view.

http://www.wunderground.com/radar/radbl ... rainsnow=0

[KWT]

Yep two tornado warnings near Mobile Bay, not surprising as they are on the NE side of Gustav.

SW pass getting the band just infront of the eyewall, should be getting cat-2 conditions in that band I'd imagine.

[physicx07]

Major winds in Grand Isle gusts to 100 sustained 70:

PSTL1 (NOS-NWLON) Pilots Sta E, SW Pass, LA
time slp t / td dir / spd / gst/pcp presWx & skyCover
(UTC) (mb) (F) (mph) (in.)
0736 988.1(S) 78.0(S)/-----(Z) 68°(S)/070(S)/096/0.00"
0730 988.8(V) 78.0(V)/-----(Z) 71°(Q)/071(Q)/100/0.00"
0724 989.8(V) 78.0(V)/-----(Z) 74°(Q)/070(Q)/099/0.00"
0718 990.2(V) 78.0(V)/-----(Z) 76°(Q)/066(Q)/092/0.00"
0712 990.2(V) 79.0(V)/-----(Z) 76°(Q)/069(Q)/093/0.00"
0706 991.5(V) 79.0(V)/-----(Z) 77°(Q)/066(Q)/---/0.00"
0700 991.9(V) 79.0(V)/-----(Z) 77°(Q)/065(Q)/088/0.00"
0654 992.2(S) 79.0(S)/-----(Z) 74°(S)/061(S)/083/0.00"
0648 992.6(V) 79.0(V)/-----(Z) 75°(Q)/059(Q)/080/0.00"
0642 992.9(V) 79.0(V)/-----(Z) 76°(Q)/061(Q)/080/0.00"
0636 993.6(V) 79.0(V)/-----(Z) 76°(Q)/058(Q)/076/0.00"
0630 993.9(V) 79.0(V)/-----(Z) 79°(Q)/055(Q)/071/0.00"
0624 994.2(V) 79.0(V)/-----(Z) 81°(Q)/058(Q)/076/0.00"
0618 994.9(V) 79.0(V)/-----(Z) 78°(Q)/060(Q)/079/0.00"
0612 995.6(V) 79.0(V)/-----(Z) 73°(Q)/060(Q)/076/0.00"
0606 995.9(V) 79.0(V)/-----(Z) 72°(Q)/053(Q)/076/0.00"
0600 996.3(V) 79.0(V)/-----(Z) 75°(Q)/052(Q)/072/0.00"
0554 996.3(V) 79.0(V)/-----(Z) 70°(Q)/048(Q)/066/0.00"
0548 996.6(V) 79.0(V)/-----(Z) 69°(Q)/048(Q)/062/0.00"


And that was almost an hour ago

[Rod Hagen]

Pretty much NW stormcenter, though the last radar return is suggestive of a motion back towards the WNW...

Yes, I agree KWT. It has taken a twist more to the west again in the last couple of frames. I guess the next question is going to be what effect the land has on direction? Does land tend to slow the "leading edge", resulting in a change in direction?

Rod

[Normandy]

Gotta admit Gus is giving some impressive wind readings.

[jlauderdal]

i have cells moving up to 70 miles an hour on gr level 3

[KWT]

physicx07, what are those units in mph or knots?
If knots then those are some very impressive impressive readings...even in mph those are pretty hefty.

[deebro22]

Just for the record, Southwest Pass is not in Grand Isle, it is near Venice, LA which is 41 miles east of Grand Isle. Many of us Louisianians have fishing camps in both Venice and Grand Isle so we are watching the conditions constantly. I am certain both places will be hammered hard but I just wanted you to know they are considered two different locations down here.

I am in Prairieville right now which is approx. half way between Baton Rouge and New Orleans along the 1-10 corridor. Conditions are pretty quiet here right now but we are looking to deteriorate very soon. Looks like Gus really picked up its forward momentum recently. We were estimating the eye would hit the coastline at 1pm here but it is looking like it will be a lot sooner.

Good luck everyone. Stay safe.

[Stormcenter]

Tornado warning in N.O.

http://radar.weather.gov/radar.php?prod ... X&loop=yes

[HURAKAN]

Conditions at PSTL1 as of
(3:00 am CDT)
0800 GMT on 09/01/2008

Wind Direction (WDIR): E ( 80 deg true )
Wind Speed (WSPD): 66.0 kts
Wind Gust (GST): 94.0 kts
Atmospheric Pressure (PRES): 29.13 in
Pressure Tendency (PTDY): -0.38 in ( Falling Rapidly )
Air Temperature (ATMP): 78.1 °F
Water Temperature (WTMP): 90.9 °F

Hurricane conditions.

[physicx07]

physicx07, what are those units in mph or knots?
If knots then those are some very impressive impressive readings...even in mph those are pretty hefty.

mph, still pretty impressive.

[USTropics]

Looks like landfall will be from 8-10AM according to current motion.

[KWT]

Grand Isle will also probably get these conditions pretty soon that the SW pass is having, eyewall getting very close to land now as well, looks like its slowed just a touch as well with that slight bend back WNW...

[KWT]

Conditions at PSTL1 as of
(3:00 am CDT)
0800 GMT on 09/01/2008

Wind Direction (WDIR): E ( 80 deg true )
Wind Speed (WSPD): 66.0 kts
Wind Gust (GST): 94.0 kts
Atmospheric Pressure (PRES): 29.13 in
Pressure Tendency (PTDY): -0.38 in ( Falling Rapidly )
Air Temperature (ATMP): 78.1 °F
Water Temperature (WTMP): 90.9 °F

Hurricane conditions.

Yep sustianed cat-1 conditions and husting into the top end of 2 so if theres any damage to be done, it'd be pretty extensive.

[Stormcenter]

Current conditions. I don't understand the "fog" in Boothville.
I think it must heavy rain. Anyway check out pressure readings.

N.O. INTL ARPT CLOUDY 80 74 81 NE25G37 29.56F
N.O. LAKEFRONT CLOUDY 80 72 76 NE39G49 29.54F
SLIDELL CLOUDY 79 72 79 NE15G24 29.60F
BELLE CHASSE LGT RAIN 78 73 84 NE17G31 29.53F
BATON ROUGE CLOUDY 77 71 82 N9 29.67F
SALT POINT N/A 75 71 87 N9G17 29.61F
BOOTHVILLE HVY RAIN 79 76 90 NE44G61 29.34F FOG

[HURAKAN]

Conditions at PSTL1 as of
(3:00 am CDT)
0800 GMT on 09/01/2008

Wind Direction (WDIR): E ( 80 deg true )
Wind Speed (WSPD): 66.0 kts
Wind Gust (GST): 94.0 kts
Atmospheric Pressure (PRES): 29.13 in
Pressure Tendency (PTDY): -0.38 in ( Falling Rapidly )
Air Temperature (ATMP): 78.1 °F
Water Temperature (WTMP): 90.9 °F

Hurricane conditions.