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Major Hurricane Irma


NJwx85

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15 minutes ago, Jaguars said:

Me don't like at all.  GFS shifts east, Euro west.  They're locking in boys and girls.

The only question right now is if the trough will lift out fast enough to allow more of an interaction with Cuba before approaching S FL and the Keys like the 0z Euro suite has.

0_es3.png.1f3b8cb3377b73216830d0285348f314.png

 

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Just now, NJwx85 said:

Recon reports don't support that right now. ADT estimates are up to 140kts which is ~160MPH.

LOL, NHC begs to differ. 

 

 

ZCZC MIATCUAT1 ALL
TTAA00 KNHC DDHHMM

Hurricane Irma Tropical Cyclone Update
NWS National Hurricane Center Miami FL       AL112017
745 AM AST Tue Sep 05 2017

...HURRICANE IRMA BECOMES A CATEGORY 5 ON THE SAFFIR-SIMPSON
HURRICANE WIND SCALE...

NOAA and Air Force hurricane hunter aircraft data indicate Hurricane
Irma has intensified into an extremely dangerous Category 5
hurricane on the Saffir-Simpson Hurricane Wind Scale with maximum
winds of 175 mph (280 km/h) with higher gusts.  A special advisory
will be issued at 800 AM AST (1200 UTC) in lieu of the scheduled
intermediate advisory for Irma.


SUMMARY OF 745 AM AST...1145 UTC...INFORMATION
----------------------------------------------
LOCATION...16.7N 57.7W
ABOUT 270 MI...440 KM E OF ANTIGUA
ABOUT 280 MI...445 KM ESE OF BARBUDA
MAXIMUM SUSTAINED WINDS...175 MPH...280 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 14 MPH...22 KM/H
MINIMUM CENTRAL PRESSURE...929 MB...27.44 INCHES

$$
Forecaster Brown/Landsea


NNNN
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Just now, blazess556 said:

LOL, NHC begs to differ. 

 

 


ZCZC MIATCUAT1 ALL
TTAA00 KNHC DDHHMM

Hurricane Irma Tropical Cyclone Update
NWS National Hurricane Center Miami FL       AL112017
745 AM AST Tue Sep 05 2017

...HURRICANE IRMA BECOMES A CATEGORY 5 ON THE SAFFIR-SIMPSON
HURRICANE WIND SCALE...

NOAA and Air Force hurricane hunter aircraft data indicate Hurricane
Irma has intensified into an extremely dangerous Category 5
hurricane on the Saffir-Simpson Hurricane Wind Scale with maximum
winds of 175 mph (280 km/h) with higher gusts.  A special advisory
will be issued at 800 AM AST (1200 UTC) in lieu of the scheduled
intermediate advisory for Irma.


SUMMARY OF 745 AM AST...1145 UTC...INFORMATION
----------------------------------------------
LOCATION...16.7N 57.7W
ABOUT 270 MI...440 KM E OF ANTIGUA
ABOUT 280 MI...445 KM ESE OF BARBUDA
MAXIMUM SUSTAINED WINDS...175 MPH...280 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 14 MPH...22 KM/H
MINIMUM CENTRAL PRESSURE...929 MB...27.44 INCHES

$$
Forecaster Brown/Landsea


NNNN

Notice I deleted that post? It was based off old data. As soon as I saw the new info I corrected it.

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For those that are newer to the board & looking for info, here is the discussion from the Miami office of the NWS

KMFL morning:

All eyes continue to closely monitor the progress of Hurricane
Irma. Here are the current Key Messages in relation to South
Florida:

1. Irma is a powerful, dangerous hurricane approaching the
northern Leeward Islands, and the threat to South Florida
continues to increase from late Friday through Monday time frame.

2. South Florida residents and visitors should closely monitor the
progress of Irma. Gather any needed supplies and review your
hurricane action plans. Be prepared to implement that plan later
this week. Continue to monitor the latest forecasts and warnings
from the National Weather Service.

3. Do not focus on the hour to hour changes in the computer
models, nor on the exact center line track in National Hurricane
Center forecasts. These can shift around considerably at this
forecast time range. Instead, focus on reviewing plans and making
preparations in the event watches or warnings are required.

Short term (Today through Wednesday night)...Strong ridge to the
northeast should keep the easterly flow across the region with a
moist troipical environment persisting over South Florida this
week. A fairly weak east flow remains over the region next couple
of days allowing for both the Atlantic and Gulf sea breezes to
develop each afternoon through mid week. Thunderstorms initiate
near the coast and progress inland across the interior and west
Gulf coast in the afternoon hours this week. The main threats from
these convection will be gusty wind, heavy rain, and frequent
lightning. Temperatures will be reaching the mid to low 90s across
the area with dew points in the mid to upper 70s. Heat index
values will once again range between 105 to 108 over the western
interior, near advisory criteria. At this time no advisory has
been issued as conditions remain marginal. The heat index will be
of increasing concern over the next several days, especially
Thursday as tropical moisture combines with light wind flow and
plenty of diurnal heating to create conditions that may warrant
heat advisories for parts of South Florida.

Pattern begins to transition by mid week as a low pressure over the
Great Lakes deepens as far south east of the Mississippi River.
To the east, Hurricane Irma is expected to remain a major
hurricane. The interactions of the frontal boundary associated
with the upper trough and Atlantic high pressure will be the
steering force for Irma. At this point, the environment ahead of
the storm looks to be supportive for it to remain a strong
hurricane.

The chances of South Florida seeing some impacts from Irma later
this week are increasing. It is still too early to forecast where
Irma`s path will go. Models will continue to change and we will have
to watch for emerging trends and what potential impacts could emerge
with Irma. At this point, the best bet for South Florida is to make
a hurricane plan, gather their hurricane kit, and continue to
monitor the progress of Irma as we head through the week.

The extended forecast is almost entirely going to depend on Hurricane
Irma. Continued in this forecast package the mention of conditions
beginning to deteriorate over the Atlantic waters and the coastal
areas with an increase in winds and heavy rainfall as threats into
next weekend.
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4 minutes ago, dan11295 said:

Just curious, I can't recall any hurricanes of that intensity in recent memory east of the islands. I know Cat 5's east of the islands are very rare. I know before it was revised downward the database had Hurricane Dog (1950) at 185 mph in the open Atlantic.

 

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