Isaac makes its final approach towards Louisiana

By: Dr. Jeff Masters , 3:29 PM GMT on August 28, 2012

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The winds and water are rising all along the coast from Louisiana to the Florida Panhandle as Tropical Storm Isaac makes its final approach. Two hurricane hunter aircraft in the storm are measuring a steadily lowering pressure and increasing winds aloft, but hurricane-force winds have not yet been observed at the surface. The 8:30 am center fix found a pressure of 976 mb, which is very low for a tropical storm. Top surface winds measured with the SFMR instrument were 70 mph, but the plane measured 102 mph at an altitude of 5,000 feet. It's more typical to see surface winds of 85 mph with a storm with these characteristics. Infrared and visible satellite loops and hurricane hunter reports from this morning have shown that Isaac has developed a 25-mile diameter eye, though the eyewall has not yet formed a full circle around the eye. Heavy thunderstorm activity is lacking on the north side, where light wind shear of 5 -10 knots is still pumping some dry air into the circulation.


Figure 1. Morning satellite image of Isaac. Note how dry air has wrapped into the west side of the storm, causing a lack of heavy thunderstorm activity.

Isaac's rains
One of the most remarkable features of Isaac has been the huge spiral band that parked itself along most of the east coast of Florida and remained there for an entire day, despite the fact the center of the storm moved 400 miles away. This rain band was amplified by a weak trough of low pressure along the East Coast, which pulled away from the coast Monday night, taking the band of heavy rain out to sea (except for a few lingering showers near West Palm Beach.) Isaac's heaviest rains fell along a swath from the east coast of Florida near West Palm Beach to the center of the state, just south of Orlando. The 2-day rainfall total of 9.03" at West Palm Beach brought their monthly rainfall total to 22.28", a new August record (old record: 20.12" in 1995.) Vero Beach's 6.48" of rain was a record for any August day. A possible tornado touched down there, damaging 20 mobile homes. In the Keys, rainfall totals as high as 7.94" (at Upper Matecumbe Key) were measured. Heavy rains from Isaac are lingering over Cuba but have ended in Haiti and the Dominican Republic; flash floods in Haiti from Isaac's torrential rains killed at least 24, and two died in the Dominican Republic. The big concern in Haiti is the heavy damage that was done to crops, and the likelihood that the storm's rains will worsen the cholera epidemic that has killed over 7,000 Haitians.


Figure 2. Radar-estimated rainfall from Miami, Florida radar shows that Isaac has dumped a wide swath of 8+ inches of rain (orange colors) across the state. Rainfall amounts in excess of 20" may have fallen just west of West Palm Beach, though the highest amount reported by a rain gauge was 13.10" at Greenacres in Palm Beach County.

Latest model runs for Isaac
The latest set of 0Z and 06Z (8 pm and 2 am EDT) model runs are fairly unified taking Isaac ashore near Southeast Louisiana late Tuesday night or early Wednesday morning, but continue to show some differences in what happens after that. Isaac may scoot nearly west-northwest just inland along the coast into Texas, as predicted by the ECMWF model, or head straight inland to the northwest and into Arkansas, as predicted by the GFS model. The latest 8-day precipitation forecast from the GFS model calls for 10 - 20 inches of rain over much of Louisiana. It appears likely that Arkansas will see some heavy rains of up to five inches, which would help put a dent in the exceptional drought conditions there.

Intensity forecast for Isaac
Low wind shear of 10 knots or less is likely until landfall, along with very warm ocean temperatures. An analysis of upper level winds from the University of Wisconsin CIMSS shows that Isaac's upper-level outflow is the strongest we've seen, with a solid outflow channel to the south. These conditions favor continued strengthening of Isaac until landfall. However, we've observed in the past many instances of hurricanes suddenly weakening in the final 12 hours before making landfall along the Central Gulf Coast. Katrina, Gustav, Dennis, Ivan, and Rita all did so. A July 2012 paper in the Bulletin of the American Meteorological Society by Rosenfeld et al. titled, AEROSOL EFFECTS ON MICROSTRUCTURE AND INTENSITY OF TROPICAL CYCLONES, theorizes that this may happen because of the impact of small particles that get pulled into the outer circulation of hurricanes, seeding the clouds. These small particles, primarily from air pollution, serve as the seed around which water condenses, increasing the rain in the outer spiral bands. The increase in rain and heat energy at the periphery of the storm comes at the expense of the eyewall and inner core, where the winds tend to weaken. A detailed modeling study by Khain et al. (2010) of Hurricane Katrina in the final day before landfall was able to reproduce the storm's weakening only when this air pollution effect was included. This impact of small particles on hurricanes is not included in any operational hurricane model.


Figure 3. Tide gauge data from Shell Beach, located in Lake Borgne just east of New Orleans. The green line shows the storm surge. The red line is the storm tide, the height of the water above Mean Sea Level (MSL.)

Storm surge observations from Isaac
Isaac's storm surge has peaked along the west coast of Florida. As I explain in our Storm Surge Tutorial, we are most interested in the storm tide--the height above Mean Sea Level (MSL) of the tide plus the storm surge. The storm tide is the number given in NHC advisories for how much above ground level the ocean will be at the coast. The storm surge is the extra elevation of the water due to wind blowing on the water, and does not include the action of waves on top of the water, nor the tide. Tide gauges are specially constructed so that transient waves do not impact water level measurements. At Cedar Key on the West Florida coast north of Tampa, a storm surge of 3' and storm tide of 3.8' were observed early this morning. These were the highest water levels measured at any tide gauge along the Florida west coast. Higher storm surges are occurring in the Florida Panhandle. As of 9 am EDT, here were the storm surge/storm tide measurements along the Florida Panhandle:

Apalachicola, FL: 3.5' storm surge, 4' storm tide
Panama City, FL: 2.3' storm surge, 3.3' storm tide
Pensacola, FL: 1.5' storm surge, 2.5' storm tide

A storm surge of 3.5 feet was recorded at 10 am EDT at Shell Beach on the east side of New Orleans in Lake Borgne. This site will have one of the highest surge values during Isaac; a storm surge of 9.5' was measured at Shell Beach during Hurricane Gustav in 2008.


Figure 4. Category 2 Hurricane Gustav of 2008 followed a very similar path to Isaac, and brought a storm tide (the combined effect of the storm surge and tidal levels) of up to 14.5' above ground level to the east side of New Orleans. Isaac's surge may be similar, though probably a little less, than Gustav's.


Figure 5. Track of Hurricane Gustav of 2008, which followed a path very similar to that of Isaac's predicted path.

Isaac: similar to Category 2 Hurricane Gustav of 2008 in destructive power?
Isaac is a huge and slow-moving storm, with tropical storm-force winds that extend out 205 miles from the center. Isaac has cut its forward speed down from 14 mph yesterday to 10 mph today, and a large swath of the coast will be subject to high winds and a large storm surge for an usually long period of time for a hurricane--up to 24 hours. Long duration winds are much more damaging than short duration winds, and a long duration storm surge event allows damage to occur during multiple high tide cycles. The long duration storm event will also allow very high rainfall totals, resulting in greater fresh-water flooding problems than usual. As a result, I expect Isaac's to cause more damage than the typical Category 1 hurricane. The 9:30 am EDT Integrated Kinetic Energy analysis from NOAA's Hurricane Research Division put the destructive potential of Isaac's winds near 2.3 on a scale of 0 to 6, but the destructive potential of Isaacs's storm surge was 4.1 on a scale of 0 to 6. For comparison, the storm surge destructive potential of Category 2 Hurricane Gustav of 2008 was rated at 4.2 on a scale of 0 to 6, and the wind destructive potential was 1.1--which is lower than Isaac's, even though Isaac was just a tropical storm at 9:30 am EDT. Gustav brought a storm tide (the combined height of the storm surge and high tide) of 14.5' to the east side of New Orleans, and 11' to Waveland, Mississippi. However, the destructive potential of Isaac's surge may be overrated by this analysis. Wave heights this morning from buoy and ships in Isaac have mostly been below 15', which is quite unimpressive. One ship report to the SE of the storm had a 19' wave height (thanks to meteorologist Steve Gregory for pointing this out.) With only another 12 - 18 hours over water, Isaac likely won't have time for its slowing increasing winds to build up a storm surge that will reach as high as 14', like Gustav did. The official NHC forecast of maximum storm surge height of 12' looks like a good one. The highest rainfall total observed in Gustav was 21" at Larto Lake, Louisiana, and I expect we'll exceed that for Isaac, since the storm is moving more slowly. Gustav spawned 41 tornadoes--21 in Mississippi, 11 in Louisiana, 6 in Florida, 2 in Arkansas, and 1 in Alabama. The strongest tornado was an EF2 in Evangeline Parish, Louisiana. Isaac will likely produce 10+ tornadoes. The total damage from Gustav in the U.S. was $4.5 billion (2012 dollars.) I expect Isaac's damage total will be in the $500 million - $4 billion range.

Invest 97L in the Middle Atlantic
A tropical wave (Invest 97L) is located in the Middle Atlantic, about 1250 miles west-northwest of the Cape Verde Islands. The storm has a modest amount of spin and heavy thunderstorms, and is under moderate wind shear. In their 8 am EDT Tropical Weather Outlook, NHC gave 97L a 40% chance of developing by Thursday morning. None of the reliable models foresee that 97L will be a threat to any land areas.

Another tropical wave that moved off the coast of Africa on Sunday is located just southwest of the Cape Verde Islands, and is moving west at 15 mph. Several models develop the disturbance into a tropical depression late this week, and NHC is giving the disturbance a 10% chance of becoming a tropical depression by Thursday morning. The disturbance could begin to affect the Northern Lesser Antilles as early as Saturday night, though our two best models, the GFS and ECMWF, predict the center of the disturbance will pass a few hundred miles north of the islands. The disturbance could be a long-range threat to Bermuda.

Jeff Masters

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Hey gang...just went up to the lake....steady winds around 40 mph..gusting to over 50...starting to get a little hairy...will try and take some pics for you folks as the day and night progresses..
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Good to know you are on high ground it looks like rain and waves are the issue.

Quoting Patrap:
Puppies are next to me now..and a Very Pregnant Nola Roux as well.Due Sept 5th.

: )

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Quoting DookiePBC:


Yeesh...looks like it is training over the Acreage again!! Wow do they ever not need more rain.
Yeah, I was watching the radar when the first cell popped up directly over Wellington and just dropped my head onto my desk - of all places, it had to start in western PBC again first? So not looking forward to it making it up here, but they got it twice as bad as we did in St. Lucie yesterday.
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anyone got a boat?

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Quoting RTSplayer:
This is going to be so bad.

They just updated the rainfall forecast on TWC for the entire SE portion of Louisiana, pretty much everything east or south of Baton Rouge is now in a 12 to 20 inch predictor zone.

I repeat 12 to 20 inches forecast for this entire region.

...And 6 to 12 inches for a very large region one ring out from there (about the same thickness of a ring but in every direction).


This is going to be very, very serious inland flooding if this verifies, droughts or no drought.


There has been no drought here, just the opposite, the soil is really saturated already...
Member Since: June 16, 2006 Posts: 0 Comments: 1560
Quoting nola70119:


Blowing real strong and the winds have really picked up over the last 45 minutes....


Ditto here on the WestBank... My barometer reading is now 29.45 inches.
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Pat I hope you stay safe today, water is always the main story with these things.

Isaac will probably peak at 80mph as it makes landfall. The pros nailed it so far, think that now Isaac is a cane the bickering will stop. Stay safe all.
Member Since: July 8, 2005 Posts: 259 Comments: 23861
Just got this little update in Lafayette:

The parish is under a hurricane watch and tropical storm warning as Hurricane Isaac approaches the northern Gulf Coast. In Lafayette Parish, winds were expected to gust up to 30 or 40 miles an hour starting late Tuesday afternoon, with gusts of 50 to 60 mph expected for most of Wednesday.

Our ground is saturated and the trees are too. Sustained TS force winds with gusts could cause a lot of downed trees and power outages.
Member Since: September 5, 2007 Posts: 0 Comments: 3481
Quoting Patrap:
Wish us well.


See y'all on the dry side..



Take care Patrap!!
Member Since: August 18, 2008 Posts: 0 Comments: 628
Quoting TreasureCoastFl:
Is that the eye?


Center Of Circ..yes..

I do believe.
Member Since: July 3, 2005 Posts: 423 Comments: 127804
Puppies are next to me now..and a Very Pregnant Nola Roux as well.Due Sept 5th.

: )
Member Since: July 3, 2005 Posts: 423 Comments: 127804
This is going to be so bad.

They just updated the rainfall forecast on TWC for the entire SE portion of Louisiana, pretty much everything east or south of Baton Rouge is now in a 12 to 20 inch predictor zone.

I repeat 12 to 20 inches forecast for this entire region.

...And 6 to 12 inches for a very large region one ring out from there (about the same thickness of a ring but in every direction).


This is going to be very, very serious inland flooding if this verifies, droughts or no drought.
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recon went home
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Quoting Patrap:
Is that the eye?
Member Since: August 18, 2008 Posts: 0 Comments: 467
It looks like it finally, at the last minute sealed out the dry air that has been keeping it from strengthening. I think we have a storm that will continue to strengthen until it gets inland. Hopefully not too long from now.
Member Since: July 30, 2011 Posts: 0 Comments: 109
The wall on lake Borgne is 13 feet, right?
Is the 12' estimate Tide+surge+waves? if so the wall will hold it all back.
I wish there was a web cam focused on the outside of the wall and structures. Is there one?
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Quoting Levi32:
Oil Rig south of the Mississippi River delta has been reporting sustained winds 60-65mph with gusts to hurricane force.


That is the LOOP (La. Offshore Oil Port) where
tankers come in and pump off oil. It is a short
distance South of Grand Isle, La.
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Good afternoon Wunderground...my prayers and good wishes go out to all you folks riding out the storm on the northern Gulf Coast, as well as those who evacuated and have to deal with the intense anxiety of not knowing how your town fared during the event. We are a tight-knit community and most of us here understand the effects that tropical systems have on our lives, so we come together in each instance and provide not just information, but SUPPORT and (hopefully) a semblance of sanity.

I'm not surprised Isaac has only managed to attain low-end Category 1 status, since its central core never took the multiple opportunities it had to tighten while never lining up with the center of vorticity in the mid levels. Infusion of dry continental air has contributed, as well as its exceptionally broad wind field having difficulty consolidating and intensifying the winds found closer to the center of circulation.

As I mentioned last night, winds between 3,000 and 5,000 feet were frequently topping 75 kts last night and continued to rise during the day (to more than 90 kts as of the previous mission), so it was really only a matter of time before the slowly decreasing central pressure translated into those strong winds aloft mixing down to the surface.

Good luck to everyone on the coast and in inland areas along the path of Hurricane Isaac! :)
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Quoting bigeasystormcaster:
Getting extremely windy here with fast moving bands coming through. Looks like we are going to take a direct hit!
Keep posting and updating as long as ya can and be safe!!
Member Since: August 18, 2008 Posts: 0 Comments: 467
Quoting whetherboy:


Check out the image with figure 2 in the Doc's post. There appears to be numerous chemtrails associated with the convection over Florida. Perhaps there was a mad made effort to prevent moisture from being drawn into Isaac by pre-emptively triggering precipitation. This enabled the moisture to escape Isaac and be drawn north to a weak area of low pressure. It is well documented that numerous governments, including our own, engage in weather manipulation, and even the Doc noted that this event was the most "remarkable" aspect of Isaac.


Nah. Not chemtrails.

To my eye, there's a setup right at the NE of FL that is perfect for catching moisture coming off those bands, and yesterday's tossed off band was _immense_, you could watch it get thrown over there and then get stuck churning by the pressure around it.

And the overall situation is still hanging out creating a sort of mixed-bag of steering for whatever moisture heads its way. It's like a bottleneck of where-is-it-going. Unfortunately, at the moment, a lot of it is sucking over NC -- yesterday it was stalling out over FL.

The "chemtrail" effect -- I was watching these storms intently yesterday as they moved through, they were extremely fast moving and they dumped a lot of rain in banded, nearly straight lines.
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I have always been amazed how storms often (not always) steer around land. I was following the path of Isaac on WunderMap and it is truly amazing.
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803. txjac
Just stopped in to let everyone know that I will be sending positive thoughts and prayers to all that are in the path of Issacc.

Best wishes and stay safe!
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Member Since: July 3, 2005 Posts: 423 Comments: 127804
801. nola70119
6:36 PM GMT on August 28, 2012
Quoting Elena85Vet:
Storm surge reports of 3 and 4' in Mobile and Pensacola.

Gives me a good idea just how bad it will be along the Mississippi coast. Waveland, Bay St Louis, Pass Christian, Gulfport, Biloxi, et al.


Anybody gotten a Lake Lake Pontchartrain report yet?


Blowing real strong and the winds have really picked up over the last 45 minutes....
Member Since: June 16, 2006 Posts: 0 Comments: 1560
800. Charmeck
6:36 PM GMT on August 28, 2012
Quoting dmh1026:
and winds don't kill when a tree falls on a house crushing it or on vehicles killing it's occupants? Please...


It's a fact the the biggest death counts during hurricane's or TS come from water. I didn't say falling trees didn't cause deaths!!!
Member Since: August 21, 2011 Posts: 0 Comments: 143
799. hydrus
6:36 PM GMT on August 28, 2012
Quoting Levi32:
Barely inland in 48 hours. This illustrates the massive inland flooding threat.

Absolutely...72 hours GFS..
Member Since: September 27, 2007 Posts: 1 Comments: 20904
798. mrsalagranny
6:36 PM GMT on August 28, 2012
Quoting guygee:
It is called "Gallows Humor", and it helps some of us get through difficult times. Count me as one. Please do not take it personally or be offended.
Im not sweetie I just dont want anyone to downplay the severity of this storm.
Member Since: June 6, 2010 Posts: 0 Comments: 853
797. yoboi
6:36 PM GMT on August 28, 2012
Quoting JasonRE:
Going to get sand bags at 3 pm today and an extra bit from my brother-in-law. Here in Lafayette, we're getting some gusts and the sky is turning dark. Depending on electricity issues until Thursday, I might not be back online. Wish us luck! Good luck and be safe to anyone else who is dealing with this storm!



if ya have to fill sandbags fast use a parking cone, turn it up side down and shovel away....
Member Since: August 25, 2010 Posts: 7 Comments: 2334
796. hurricanehanna
6:36 PM GMT on August 28, 2012
Quoting Patrap:
Wish us well.


See y'all on the dry side..


Good luck Pat - best wishes to you, your family and the puppies!
Member Since: September 5, 2007 Posts: 0 Comments: 3481
795. nola70119
6:35 PM GMT on August 28, 2012
I am going to move my car to high ground early tonight.....I am afraid maybe people here are taking this too lightly, but its obvious this storm is finally pulling together, and already had really low pressure. Luckily, it hasn't got that much deep warm water to work with.

Also, the Mississippi River is very low, this means that the water is warmer than normal just off Louisiana....
Member Since: June 16, 2006 Posts: 0 Comments: 1560
794. UpperLevelLOL
6:35 PM GMT on August 28, 2012
Quoting SFLWeatherman:


Dude, just stop please. We got bigger concerns than thunderstorms in Florida.
Member Since: September 1, 2008 Posts: 0 Comments: 134
793. BlxMS
6:35 PM GMT on August 28, 2012
Quoting emcf30:
Man, you have to be a true scum bag to do this stuff.

Hurricane Isaac looters hit boats south of Slidell, sheriff says

Link


In Biloxi, you loot in / after a storm, you are force fed a lead diet...We DEFINATELY will shoot first and never ask questions!!!
Member Since: August 28, 2005 Posts: 0 Comments: 130
792. reef58
6:35 PM GMT on August 28, 2012
Bertha Nothing
Fran something
bonnie ehhh pita
floyd overhyped wind wise, but major flooding
isabel what did we get 40mph wind here?
ernesto are you serious?
opie non event here
irene non event here, and probably on par strength wise with Isaac.

you are not a very good troll

Quoting uncwhurricane85:


ive been through bertha, fran, bonnie, floyd, isabel, ernesto, charlie, ophelia and irene here in wilmington nc which = isaac is a little baby
Member Since: August 26, 2012 Posts: 0 Comments: 12
791. uncwhurricane85
6:35 PM GMT on August 28, 2012
just when isaac finally gets it tg it runs into louisiana..i know center hasnt made landfall but much more strengthning is going to hard since so much of the circulation is pulling air off the cont. usa
Member Since: August 4, 2010 Posts: 0 Comments: 572
789. Elena85Vet
6:35 PM GMT on August 28, 2012
Storm surge reports of 3 and 4' in Mobile and Pensacola.

Gives me a good idea just how bad it will be along the Mississippi coast. Waveland, Bay St Louis, Pass Christian, Gulfport, Biloxi, et al.


Anybody gotten a Lake Lake Pontchartrain report yet?
Member Since: August 18, 2008 Posts: 0 Comments: 628
788. scott39
6:34 PM GMT on August 28, 2012
Quoting leftlink:
Grand Isle about to face to main rain band, New orleans a thunderstorm. LINK has a loop version:

LINK

Cool link! thanks
Member Since: June 13, 2009 Posts: 0 Comments: 6747
787. bigeasystormcaster
6:34 PM GMT on August 28, 2012
Getting extremely windy here with fast moving bands coming through. Looks like we are going to take a direct hit!
Member Since: July 30, 2011 Posts: 0 Comments: 109
786. Patrap
6:34 PM GMT on August 28, 2012
Quoting Diabellical:


Midcity Here, 70119.
Be Well.


Good luck,Have the Alert Radio ready as WWL and other lag by minutes too.

Esp TWC.

They need a new format or a Producer on Dupage.

Thats a easy thing they could spend funds on me tinks.

; )
Member Since: July 3, 2005 Posts: 423 Comments: 127804
785. Gearsts
6:34 PM GMT on August 28, 2012
Quoting Levi32:
New 12z ECMWF still has Isaac offshore at 7am CDT tomorrow morning.

Levi do you think Isaac has peak or it could deepen more?
Member Since: August 2, 2010 Posts: 0 Comments: 1739
784. dmh1026
6:34 PM GMT on August 28, 2012
Quoting Charmeck:
Isaac is HUGE and GOM is not the only area being affected - Almost knee deep water in downtown Charleston, SC. People - water is what kills not the winds!!!!!

Link
and winds don't kill when a tree falls on a house crushing it or on vehicles killing it's occupants? Please...
Member Since: August 16, 2008 Posts: 0 Comments: 142
783. guygee
6:34 PM GMT on August 28, 2012
Quoting mrsalagranny:
I know what sarcasm means Im just saying we are going through a potential natural disaster and someone is making light of the situation.I dont care what you call it.It is not necessary.I mean no disrespect.
It is called "Gallows Humor", and it helps some of us get through difficult times. Count me as one. Please do not take it personally or be offended.

(edit, sp: gallow's homer is something entirely different)
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782. AtHomeInTX
6:34 PM GMT on August 28, 2012
Quoting JasonRE:
Going to get sand bags at 3 pm today and an extra bit from my brother-in-law. Here in Lafayette, we're getting some gusts and the sky is turning dark. Depending on electricity issues until Thursday, I might not be back online. Wish us luck! Good luck and be safe to anyone else who is dealing with this storm!


Take care.
Member Since: August 24, 2010 Posts: 0 Comments: 58
781. CybrTeddy
6:33 PM GMT on August 28, 2012
Hello all, I see that Isaac finally managed to become a hurricane.
Member Since: July 8, 2005 Posts: 259 Comments: 23861
780. Patrap
6:33 PM GMT on August 28, 2012
Thanx Levi.

Do yer thing friend.

All hands on deck will help today, tonight and tomorrow.

Its A weird one that's fer sure.


Effects still far away




926
WGUS52 KMFL 281831
FFWMFL
FLC099-282130-
/O.NEW.KMFL.FF.W.0007.120828T1831Z-120828T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000 Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIAMI FL
231 PM EDT TUE AUG 28 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* FLASH FLOOD WARNING FOR...
EASTERN PALM BEACH COUNTY IN SOUTHEAST FLORIDA...

* UNTIL 530 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED A LINE OF SHOWERS AND THUNDERSTORMS DEVELOPING OVER
PORTIONS OF PALM BEACH. RAINFALL RATES UP TO 2 INCHES WILL BE
POSSIBLE THROUGH THIS TIME.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE AREAS
EXTENDING SOUTH ACROSS PORTIONS OF PALM BEACH COUNTY..INCLUDING
THE ACREAGE AND WELLINGTON AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI.



LAT...LON 2635 8011 2634 8038 2696 8046 2696 8015
2698 8014 2697 8009

Member Since: July 3, 2005 Posts: 423 Comments: 127804
779. Diabellical
6:33 PM GMT on August 28, 2012
Quoting Patrap:
Power will not last long here now Uptown.

I will try to get some info to some dedicated members on the EOC Big Loop..but comm is ratty and sporadic on my end..


Midcity Here, 70119.
Be Well.
Member Since: August 27, 2012 Posts: 0 Comments: 24
778. nola70119
6:32 PM GMT on August 28, 2012
Quoting Levi32:
Barely inland in 48 hours. This illustrates the massive inland flooding threat.



Yes, that looks right to me......but where? Depends in that NE quadrant....
Member Since: June 16, 2006 Posts: 0 Comments: 1560
777. JasonRE
6:32 PM GMT on August 28, 2012
Going to get sand bags at 3 pm today and an extra bit from my brother-in-law. Here in Lafayette, we're getting some gusts and the sky is turning dark. Depending on electricity issues until Thursday, I might not be back online. Wish us luck! Good luck and be safe to anyone else who is dealing with this storm!
Member Since: August 6, 2012 Posts: 0 Comments: 122
776. blsealevel
6:32 PM GMT on August 28, 2012
Quoting Levi32:
New 12z ECMWF still has Isaac offshore at 7am CDT tomorrow morning.



I know crazy ant it
Member Since: August 23, 2008 Posts: 0 Comments: 1918
775. hydrus
6:32 PM GMT on August 28, 2012
Member Since: September 27, 2007 Posts: 1 Comments: 20904

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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

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