Showing posts with label Isaac. Show all posts
Showing posts with label Isaac. Show all posts

Isaac Threatens Northern Gulf Coast

 *** UPDATED *** 

11 am Track from the NHC image-

As of the 11am update:  THE HURRICANE WATCH IS EXTENDED WESTWARD ALONG THE LOUISIANA COAST TO JUST EAST OF MORGAN CITY...INCLUDING METROPOLITAN NEW ORLEANS
AND LAKE PONTCHARTRAIN.

 

# 6519

 

While the forecast is gradually improving for the west central peninsula of Florida, the threat of Isaac making landfall anywhere from the panhandle west to Louisiana has increased overnight.

 

With each model run, the forecast track has shifted a little more to the west. As you can see by the spaghetti models below, there remains a fair amount of divergence in forecast tracks.

 

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Today’s  11am Discussion cautions:

 

SINCE THE DYNAMICAL MODEL CONSENSUS HAS SHIFTED WESTWARD...THE OFFICIAL TRACK FORECAST IS MOVED A BIT TO THE WEST OF THE PREVIOUS ONE.  THIS REQUIRES AN EXTENSION OF THE HURRICANE WATCH WESTWARD ALONG THE LOUISIANA COAST.  IT SHOULD BE NOTED THAT THERE IS GREATER THAN USUAL UNCERTAINTY IN THE TRACK FORECAST.

 

 

Isaac remains a tropical storm, but conditions are generally favorable for intensification over the next 48 to 72 hours. The National Hurricane Center estimates that Isaac could be a Category 2 hurricane before it nears the coast.

 

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And a reminder, you don’t have to be directly in the path of this storm to be affected by it. 

 

Tropical Storm force winds extend 200 miles from the center, and landfalling tropical systems have been known to generate tornadoes and cause flooding hundreds of miles away.

 

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Finally, the end of May was National Hurricane Preparedness week.  You can revisit some of this year’s PSAs and preparedness advice from NOAA by clicking this link, or the graphic below.

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Hurricane Warnings Raised For South Florida

 

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# 6518

 

The nemesis of tropical storms and hurricanes is the crossing of land, as that interrupts the fuel supply they derive from passing over warm ocean waters.  Mountainous terrain can further disrupt their circulation, and many a storm has thrashed themselves to pieces crossing Cuba or Hispaniola.

 

The latest forecast from the NHC has Isaac attempting to thread the needle between the elevated terrain of Haiti to its east, and Cuba to its west, as it moves in a northwesterly direction through the Windward Passage.

 

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All of which suggests Isaac will spend less time over land than previously thought, and has a better opportunity to intensify to hurricane strength before reaching the Florida Keys.

 

Accordingly, overnight Hurricane warnings have been posted for:

 

  • The Florida Keys, including the Dry Tortugas
  • The West Coast of Florida from Bonita Beach Southward to Florida Bay

 

The National Hurricane Center’s  5am Discussion has this to say about Isaac’s future.

 

GIVEN THAT THE CYCLONE HAS FARED RATHER WELL AFTER MOVING ACROSS HAITI...AND THAT THE TRACK FORECAST HAS ONLY MINIMAL INTERACTION WTH CUBA...THE INTENSITY FORECAST AFTER 12 HOURS HAS BEEN ADJUSTED UPWARD FOLLOWING THE TREND OF THE LATEST INTENSITY GUIDANCE.

 

ISAAC ISEXPECTED TO BECOME A HURRICANE IN ABOUT 36 HOURS...WITH ADDITIONAL INTENSIFICATION EXPECTED AS THE CYCLONE MOVES INTO THE EASTERN GULF OF MEXICO IN A FAVORABLE ENVIRONMENT. THE NEW NHC INTENSITY FORECAST IS CLOSE TO THE INTENSITY CONSENSUS AIDS THROUGH 72 HOURS AND FOLLOWS A BLEND OF THE DECAY SHIPS AND LGEM AFTERWARD.

 

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Given that Tropical Storm force winds extend more than 200 miles from the center, the exact path of Isaac is of less importance than one might think.

 

Tropical storm conditions may be expected along much of Florida’s west coast (and even into the center of the state) over the next couple of days.

 

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Landfall is now expected in about 3 days along the northern Gulf coast, and the storm could be approaching CAT 2 strength at that time.

 

Despite not yet achieving hurricane strength, residents along the path of this storm need to be making their preparations for Isaac’s arrival.

 

When it comes to getting the latest information on hurricanes, your first stop should always be the National Hurricane Center in Miami, Florida. These are the real experts, and the only ones you should rely on to track and forecast the storm.

 

The second official information source you should have bookmarked is your local Office of Emergency Management.  There you will find information about evacuation zones, shelters, and emergency decrees in your area.

 

If you are on Twitter, you should also follow @FEMA, @CraigatFEMA, @NHC_Atlantic, @NHC_Pacific and @ReadydotGov.

 

And a reminder, this year emergency management officials are trying once again to dispel the widespread belief that taping windows provides protection during a hurricane (see The Tale Of The Tape).

 

Up until the 1970s, it was pretty much standard advice to homeowners to tape plate glass windows to keep them from shattering, but that advice was discredited, and has not been part of hurricane prep advice for 30 years.

 

Not only does taping windows provide a false sense of security, it can bind shards of flying glass into larger, and more dangerous, projectiles.

 

Still, the myth hangs on.

 

A video that I’ve highlighted in the past, from the Pinellas County Office of Emergency Management demonstrates just how useless masking, or duct taping your your windows really is during a storm (be patient, it can take a minute to load).

 

Tape Strikes Out

Tape Strikes Out

Time: 4 min.

When a storm blows in, you put masking tape on your windows and you're fine right? We'll show you just how wrong that assumption can be.

 

If you haven’t already downloaded the Tropical Cyclone Preparedness Guide, now would be an excellent time to do so. It is a short (12-page), easy to follow guide that will walk you through the basics of understanding (and surviving) hurricanes and tropical storms.

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Isaac’s Uncertain Future

 

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# 6513

 

 

The National Hurricane Center has released their 11am forecast update on T.S. Isaac, and while the storm remains poorly organized, the forecast envisions a strengthening system as it crosses Haiti late tomorrow.

 

How much mountainous terrain the storm must cross, and exactly when it begins an anticipated more northwesterly turn, will determine just how much of an impact this storm will have on Florida early next week.


The 11 am discussion warns that: SIGNIFICANT UNCERTAINTY REMAINS ABOUT THE THREAT ISAAC POSES TO FLORIDA.

 

The forecast, for now, has Isaac at potentially hurricane strength off the west coast of Florida on Tuesday - but as the width of the `forecast cone’ suggests - it could be anywhere from off the east coast of Florida to the middle of the Gulf of Mexico.

 

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As I’m sitting in the North East Quadrant of where the storm is forecast to be come Tuesday, I’ve already begun making plans. 


While I don’t anticipate it will become necessary, I’ve several pre-arranged places I can bug-out to, if evacuations are ordered in my area.

 

Knowing where you will go is essential, if you live in an evacuation zone. In addition, I’m always ready to leave at a moment’s notice (see Inside My New Bug Out Bag).  

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My Bug-out-bag, Canteen, & Toiletry kit

 

A bug-out-bag should be a smaller version of a much larger emergency supply that every household should maintain. While a BOB should provide for 72 hours of your family's needs, if you live in hurricane country you should be prepared to stay at home, without outside assistance, for at least 1 to 2 weeks.

 

For more on how you can put together an emergency bug-out kit for you and your family, you may wish to visit Ready.gov  for some additional advice.

 

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A reminder that September is National Preparedness Month, and so I’ll be doing a lot of preparedness blogging next month. 

 

If you haven’t already downloaded the Tropical Cyclone Preparedness Guide, now would be an excellent time to do so. It is a short (12-page), easy to follow guide that will walk you through the basics of understanding (and surviving) hurricanes and tropical storms.

image

 

When it comes to getting the latest information on hurricanes, your first stop should always be the National Hurricane Center in Miami, Florida. These are the real experts, and the only ones you should rely on to track and forecast the storm.

 

The second official information source you should have bookmarked is your local Office of Emergency Management. 

 

If you are on Twitter, you should also follow @FEMA, @CraigatFEMA, @NHC_Atlantic, @NHC_Pacific and @ReadydotGov.

 

While it may seem to be a lot of work to get prepared to deal with an emergency, it really isn’t.

Preparing is easy.

 

It’s worrying that’s hard.

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