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Posted on 08/28/2005 2:38:16 PM PDT by NautiNurse
Extremely dangerous Hurricane Katrina is bearing down on the North Central Gulf of Mexico and New Orleans metro area. Thousands of people did not evacuate New Orleans. Outer bands of Katrina are reaching the Louisiana coast.
Due to the size and intensity of this storm, all interests in the North Gulf of Mexico should be in their safe locations.
The following links are self-updating:
Public Advisory Currently published every 3 hours 5A, 8A, 11A, 2P, etc. ET
NHC Discussion Published every six hours 6A, 11A, 6P, 11P
Three Day Forecast Track
Five Day Forecast Track
Navy Storm Track
Katrina Track Forecast Archive Nice loop of each NHC forecast track for both three and five day
Forecast Models
Alternate Hurricane Models via Skeetobite
Bouy Data Louisiana/Mississippi
Buoy Data Florida
Images:
New Orleans/Baton Rouge Experimental Radar Subject to delays and outages - and well worth the wait
Ft. Polk, LA Long Range Radar Loop
Northwest Florida Long Range Radar
Storm Floater IR Loop
Storm Floater Still & Loop Options
Color Enhanced IR Loop
Other Resources:
Hurricane Wind Risk Very informative tables showing inland wind potential by hurricane strength and forward motion
Central Florida Hurricane Center
New Orleans Web Cams Loads of web cam sites here. The sites have been very slow due to high traffic
New Orleans Music Online Couldn't resist--love that jazz
Golden Triangle Weather Page Nice Beaumont weather site with lots of tracks and graphics
Hurricane City
Crown Weather Tropical Website Offers a variety of storm info, with some nice track graphics
Live streaming:
WWL-TV/DT New Orleans (WMP) - mms://beloint.wm.llnwd.net/beloint_wwltv
WVTM-TV/DT Birmingham (WMP) - mms://a1256.l1289835255.c12898.g.lm.akamaistream.net/D/1256/12898/v0001/reflector:35255
WDSU-TV/DT New Orleans (WMP) - http://mfile.akamai.com/12912/live/reflector:38202.asx
Hurricane City (Real Player) - http://hurricanecity.com/live.ram
ABCNews Now (Real Player) - http://reallive.stream.aol.com/ramgen/redundant/abc/now_hi.rm
WKRG-TV/DT Mobile (WMP) - mms://wmbcast.mgeneral.speedera.net/wmbcast.mgeneral/wmbcast_mgeneral_aug262005_1435_95518
| Category | Wind Speed | Barometric Pressure | Storm Surge | Damage Potential |
|---|---|---|---|---|
| Tropical Depression |
< 39 mph < 34 kts |
Minimal | ||
| Tropical Storm |
39 - 73 mph 34 - 63 kts |
Minimal | ||
| Hurricane 1 (Weak) |
74 - 95 mph 64 - 82 kts |
28.94" or more 980.02 mb or more |
4.0' - 5.0' 1.2 m - 1.5 m |
Minimal damage to vegetation |
| Hurricane 2 (Moderate) |
96 - 110 mph 83 - 95 kts |
28.50" - 28.93" 965.12 mb - 979.68 mb |
6.0' - 8.0' 1.8 m - 2.4 m |
Moderate damage to houses |
| Hurricane 3 (Strong) |
111 - 130 mph 96 - 112 kts |
27.91" - 28.49" 945.14 mb - 964.78 mb |
9.0' - 12.0' 2.7 m - 3.7 m |
Extensive damage to small buildings |
| Hurricane 4 (Very strong) |
131 - 155 mph 113 - 135 kts |
27.17" - 27.90" 920.08 mb - 944.80 mb |
13.0' - 18.0' 3.9 m - 5.5 m |
Extreme structural damage |
| Hurricane 5 (Devastating) |
Greater than 155 mph Greater than 135 kts |
Less than 27.17" Less than 920.08 mb |
Greater than 18.0' Greater than 5.5m |
Catastrophic building failures possible |
Knock it off - ridiculously irresponsible of you and the other 2 that are using this as a place to cause religeous conflict.
yup , and that is why the city politicos must be held accountable for their timing
The man on WWL was talking about the temperature inside without air conditioning--surely someone else was listening.
Are you anti or pro Bono?
What? No celery? [g]
Dang, what a shame - wish you could :)
There is a medical team in the dome and you can be sure they have all kinds of medicines for alcohol detox, seizures, etc.
You can bet they dont have sufficient medications for 20000 people.
I heard that same thing. The Ritz it ain't.
never thought of that, good point, what is going to happen inside that superdome without air conditioning? they will need to get some big diesel portable generators in there fast.
Have at it.
I won't have people dancing on graves because they believe the evil sinners are getting Soddam and Ghomorrahed.
You posted directly to me, so be a man and not post to All.
Here's a nice powerpoint summary in .pdf of design procedures for wind loading.
http://www.cof.orst.edu/users/rosowsky/PDF%20downloads/WSE560%20Wind%20Loads.pdf
From http://www.stormtrack.org/library/damage/utlizat.htm
When L equals R, failure results. A brief summary of the procedure used to calculate failure wind loads employing the load-resistance concept is presented. Further explanation can be found in Marshall et al., (1983).
Uncertainties in structural resistance include variations in material strengths, fabrication, and underlying design assumptions. Ellingwood et al., (1980), recognized the uncertainties in structural resistance as a function of:
R = R M F P (1)
where R is the nominal code-specified resistance, and the terms M, F and P represent ratios in the uncertainties of material strength, fabrication and professional design assumptions, respectively.
The simplified expression for wind pressure can be written as:
q = c GC V (2)
where q is the wind pressure in pounds per square foot (psf), c is the air density term, G is the gust response factor, C is the pressure coefficient and V is the wind velocity in miles per hour (mph).
The total wind load, L, is represented by the product q A, where A is the area over which the wind pressure q is acting. Then, the failure wind speed can be calculated by setting the structural resisting moment equal to the wind induced moment. At failure:
(3)R M F P d V = c A GC e
where d and e are moment arms.
In other words, you're correct that at twice the wind velocity, that function quadruples the wind loading factor.
Note from the .pdf file that many codes and design procedures in the New Orleans area in the past were calling for 160 mph designs, although what is difficult to design is cumulative failures in stormwater drainage resulting in erosion and ground saturation. When the topography changes and the geometry of the foundations change, things start to fail rapidly and there is little safety margin for a stable structure once failure occurs in those high winds.
Janice Dean is so pathetic - she's not even a meteorologist!
I went back and read Topher's posts--what's wrong with them? Is he not entitled to his opinion here? What's wrong with pondering the idea that God still deals with people the way he did in the Old Testament??
Anyway, as a loving Father, we should know that He will spank. Jesus said that the rain falls on the good and the bad. Flip that to the negative, if you will, and you could say that the good will suffer with the bad. I think that's why lots of us end up on FR anyway, wouldn't you say? Because stupid people do stupid things, all of us suffer through bad laws, etc.
I've gone from the fear and sorrow stage to the numb stage. I couldn't post here for several hours. I'm numb now. Numb is better.
What did you hear him say?
He has given the best descriptions I have heard -- so glad to have streaming video.
Is your family okay?
I think (but am not sure. I may be wrong.) that the Vortex update is just raw data that the plane transmits while flying through the eye, and the NHC issues an official update a little later after it.
Depends on the client, as it were.
Latest NHC Report:
160 mph winds
904 mb pressure
No change past 3 hours.
Thank You, apology accepted.
I just don't think this is any time to joke. Possibly thousands of people are going to lose their lives tonight.
Everyone should think about that before they post.
Take care,
Joe
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