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Hurricane Florence


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6 minutes ago, downeastnc said:

Yeah if there is a bigger turn north than modeled it wont probably show up till very late in the game....which is why hurricanes suck.....though in this range you expect smaller corrections....I expect the outliers to meet in the middle so I still say Kure Beach up to Emerald Isle is still IMO the best bet for landfall....

Can't disagree with any of that. You would likely get eye or eyewall in Greenville with that solution.

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CAT 4!!!!!

 368 WTNT61 KNHC 101556 TCUAT1 Hurricane Florence Tropical Cyclone Update NWS National Hurricane Center Miami FL AL062018 1200 PM AST Mon Sep 10 2018 ...FLORENCE BECOMES A CATEGORY FOUR HURRICANE... Data from a NOAA Hurricane Hunter aircraft indicate that Florence has continued to rapidly stregthen and has maximum sustained winds near 130 mph (195 km/h). The latest minimum central pressure based on data from the aircraft is 946 mb (27.93 inches). SUMMARY OF 1200 PM AST...1600 UTC...INFORMATION --------------------------------------------------- LOCATION...25.0N 60.2W ABOUT 575 MI...925 KM SSE OF BERMUDA ABOUT 1230 MI...1985 KM ESE OF CAPE FEAR NORTH CAROLINA MAXIMUM SUSTAINED WINDS...130 MPH...195 KM/H PRESENT MOVEMENT...W OR 280 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...946 MB...27.93 INCHES $$ Forecaster Blake

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3 minutes ago, bigshaq00 said:

New to weather, so what could the triangle see from this storm. Could we see hurricane force winds or tropical force winds? Wind?  

Hurricane Center has wind products here...

https://www.nhc.noaa.gov/refresh/graphics_at1+shtml/145000.shtml?tswind120#wcontents

https://www.nhc.noaa.gov/refresh/graphics_at1+shtml/145000.shtml?mltoa34#contents

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Just now, Regan said:

just me, but im not taking the GFS.  especially the latest run  id but the FV3 first.  something isn't right.  

Its all about the blend.......some models will be to far right, some will be to far left, that's why the NHC etc use a consensus and go down more pr less down the middle....so far the FV3 has been pretty good at being in the middle of the spread 

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Off of masters site/blog:

 

 to 2012.

Surge forecast
Figure 5. Maximum of the "Maximum Envelope of Waters" (MOM) storm tide image for a composite maximum surge for a large suite of possible mid-strength Category 3 hurricanes (sustained winds of 120 mph) hitting at high tide (a tide level of 2.3) near the North Carolina/South Carolina border. What’s plotted here is the storm tide--the height above ground of the storm surge, plus an additional rise in case the storm hits at high tide. Empty brownish grid cells with no coloration show where no inundation is computed to occur. Inundation of 15 -22’ can occur in a worst-case scenario along most of the coast. Note that not all sections of the coast will experience this surge level simultaneously; the peak values would occur near and to the right of the storm's center where it makes landfall. The image was created using the National Hurricane Center’s Sea, Lake, and Overland Surge from Hurricanes (SLOSH) model. See our storm surge inundation maps for the U.S. coast for more information.

A storm surge of 15 - 20' possible from Florence

The South Carolina and North Carolina coasts are extremely vulnerable to high storm surges, due to the large area of shallow water offshore. Two of the three historical Category 4 hurricanes that have hit this region generated a storm tide 18 - 20 feet: Hugo of 1989 and Hazel of 1954. The other storm--Gracie of 1959--did not (it hit at low tide, significantly reducing the coastal flooding). The storm tide is the combination of the storm surge and the normal lunar tide, measured in height above sea level. The National Hurricane Center uses the terminology “height above ground level” when discussing the storm tide, meaning the height the surge (plus tide) gets above the normal high tide mark. If Florence is a Category 3 or 4 hurricane at landfall, it has the capability of generating a 20-foot surge along a 10 – 40 mile stretch of the coast where the right-hand eyewall comes ashore.

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8 minutes ago, downeastnc said:

Its all about the blend.......some models will be to far right, some will be to far left, that's why the NHC etc use a consensus and go down more pr less down the middle....so far the FV3 has been pretty good at being in the middle of the spread 

Exactly this. Actually the TVCN consensus model has been beating even the official NHC forecast tracks recently. Similarly, the IVCN consensus is the best bet for intensity.

As for the GFS, I really think it's just missing on the strength of that ridge. Be nice if the GFS got one right for a change though.

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21 minutes ago, Justicebork said:

Yawn.  We see this 5 or 6 times each winter.

 

I don't think the GFS models cold water upwelling or if it does it doesn't do it very well. Cat 5 comes to a complete halt just east of the OBX and maintains Cat 5 strength for over 48 hours? I don't think so.

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