It is and not likely to drop. it will probably get stronger but they may not know until they go back and look at the historical data.Thanks for updating the thread @Arcadian - this thing is huge. Hopefully it doesn't get any stronger. Basically a category 5 now, but hopefully it drops down again.
000
WTNT44 KNHC 282058
TCDAT4
Hurricane Ian Discussion Number 25
NWS National Hurricane Center Miami FL AL092022
500 PM EDT Wed Sep 28 2022
An Air Force Reserve Hurricane Hunter aircraft provided the last
fix on Ian just before the hurricane made landfall at Cayo Costa,
Florida, with the landfall time near at 305 pm EDT. The
minimum pressure had risen to about 940 mb at landfall, suggesting
that the winds had come down slightly, and the landfall intensity
was estimated near 130 kt. While there hasn't been much in situ
data recently, satellite images show that the eye has become more
cloud filled, and Tampa Doppler radar data is indicating a gradual
reduction in winds. The initial intensity is set to 120 kt on this
advisory.
Further weakening is forecast while Ian moves over central Florida
during the next day and emerges into the western Atlantic later on
Thursday. While there is a lot of vertical wind shear in the
environment there, a favorable trough interaction from a trough in
the southern United States is expected to counteract the shear,
resulting in Ian staying a strong tropical storm through landfall
on the southeast U.S. coast. Little change was made to the
intensity forecast, which is near or somewhat above the consensus
guidance.
The hurricane is moving to the north-northeast at about 8 kt. The
aforementioned trough is likely to cause Ian to turn northward over
the western Atlantic and to the north-northwest by the weekend.
Model guidance is just a bit faster to the north-northeast than the
last cycle, and the new forecast is nudged in that direction. The
trough will probably cause Ian to transition to an extratropical
cyclone in a few days over the southeastern United States, and this
new forecast reflects this likelihood.
Key Messages:
1. Catastrophic storm surge inundation of 12 to 18 feet above ground
level along with destructive waves is ongoing along the southwest
Florida coastline from Englewood to Bonita Beach, including
Charlotte Harbor.
2. Catastrophic wind damage is occurring along the southwestern
coast of Florida in areas near the eyewall of Ian. Hurricane-force
winds, especially in gusts, are expected to spread inland to central
Florida near the core of Ian through early Thursday. Hurricane
conditions are expected along the east-central Florida coast
overnight through early Thursday.
3. Heavy rainfall will spread across the Florida peninsula through
Thursday and reach portions of the Southeast U.S. later this week
and this weekend. Widespread, life-threatening catastrophic
flooding, with major to record river flooding, are expected to
continue across portions of central Florida with considerable
flooding in northern Florida, southeastern Georgia and eastern South
Carolina.
4. There is a danger of life-threatening storm surge on Thursday
and Friday along the coasts of northeast Florida, Georgia, and South
Carolina, with hurricane conditions possible. Residents in these
areas should follow any advice given by local officials.
FORECAST POSITIONS AND MAX WINDS
INIT 28/2100Z 26.9N 82.0W 120 KT 140 MPH...INLAND
12H 29/0600Z 27.8N 81.6W 75 KT 85 MPH...INLAND
24H 29/1800Z 28.8N 81.0W 55 KT 65 MPH...INLAND
36H 30/0600Z 30.0N 80.6W 55 KT 65 MPH...OVER WATER
48H 30/1800Z 31.9N 80.6W 55 KT 65 MPH...OVER WATER
60H 01/0600Z 34.0N 81.0W 40 KT 45 MPH...INLAND
72H 01/1800Z 36.0N 81.5W 20 KT 25 MPH...POST-TROP/EXTRATROP
96H 02/1800Z...DISSIPATED
$$
Forecaster Blake
000
WTNT44 KNHC 290859
TCDAT4
Tropical Storm Ian Discussion Number 27
NWS National Hurricane Center Miami FL AL092022
500 AM EDT Thu Sep 29 2022
Ian's center continues to move northeastward across central Florida,
and nearly all of the heavy rains are located to the north over
northeastern Florida. NWS WSR-88D Doppler velocities from the
Melbourne and Tampa radars have decreased significantly since last
evening, and based on that data, Ian is now a tropical storm with
maximum sustained winds of 55 kt. This intensity is also supported
by wind observations across Florida, with the highest recent
sustained wind being 52 kt at New Smyrna Beach.
Ian's current motion is northeastward, or 040/7 kt. The tail end
of a deep-layer trough is expected to detach from the main trough
axis over the southeastern United States during the next 24 to 48
hours, and Ian is forecast to move around the eastern periphery of
this feature, turning north-northeastward later today and then
north-northwestward by Friday night. In this scenario, Ian should
move off the east coast of Florida later today, and then swing
northward toward the South Carolina coast during the next 36 hours
or so. Although there is some cross-track spread in the guidance,
they all agree on this general scenario, and the NHC track forecast
lies where most of the models are packed. No significant changes
were made to the previous prediction.
Little change in intensity is forecast during the next 24 hours or
so, mainly due to strong southwesterly shear. After 24 hours,
global models are suggesting that Ian could have some favorable
interaction with the eastern U.S. trough, all while it's moving
over the warm 28-29 degree Celsius waters of the Gulf Stream. As a
result, some slight strengthening is indicated in the official
forecast by 36 hours, and Ian could be near hurricane intensity as
it's approaching the coast of South Carolina. This possibility is
accounted for by the Hurricane Watch that is effect for the area.
After moving inland, Ian is expected to weaken quickly, and global
models indicate it should dissipate or become absorbed by another
broader area of low pressure over the Carolinas by day 3.
Key Messages:
1. Coastal water levels continue to subside along the west coast of
Florida. There is a danger of life-threatening storm surge today
through Friday along the coasts of northeast Florida, Georgia,
and South Carolina. Residents in these areas should follow any
advice given by local officials.
2. Tropical-storm-force winds are expected to spread northward
across northeastern Florida, Georgia, and the Carolina coasts
through Friday. Hurricane conditions are possible through
Friday along the coasts of northeastern Florida, Georgia and South
Carolina where a Hurricane Watch in effect.
3. Widespread, life-threatening catastrophic flooding, with major to
record river flooding, will continue today across portions of
central Florida with considerable flooding in northern Florida,
southeastern Georgia and eastern South Carolina expected today
through the end of the week.
FORECAST POSITIONS AND MAX WINDS
INIT 29/0900Z 28.0N 80.9W 55 KT 65 MPH...INLAND
12H 29/1800Z 28.9N 80.4W 55 KT 65 MPH...OVER WATER
24H 30/0600Z 30.2N 80.0W 55 KT 65 MPH...OVER WATER
36H 30/1800Z 32.2N 80.1W 60 KT 70 MPH...OVER WATER
48H 01/0600Z 34.3N 80.8W 35 KT 40 MPH...INLAND
60H 01/1800Z 35.8N 81.7W 25 KT 30 MPH...INLAND
72H 02/0600Z...DISSIPATED
$$
Forecaster Berg
000
WTNT44 KNHC 291500
TCDAT4
Tropical Storm Ian Discussion Number 28
NWS National Hurricane Center Miami FL AL092022
1100 AM EDT Thu Sep 29 2022
The center of Ian has emerged into the western Atlantic Ocean to
the north of Cape Canaveral. While satellite images show the
system is becoming a hybrid cyclone, with frontal features outside
of the core of Ian, the winds from multiple sources are notable.
Velocity data from NWS Doppler radar indicate maximum winds of about
70-75 kt at 10,000 ft over land, and sustained winds of about 55 kt
were recorded in the Daytona Beach area earlier this morning. These
data support a higher initial intensity, now 60 kt for this
advisory.
The storm is moving northeastward at about 8 kt. Ian has stubbornly
gone east of the track forecast for the past couple of days and has
moved back over water faster than expected. A mid-level shortwave
trough moving southward across the southern United States should
turn Ian northward overnight and north-northwestward on Saturday.
The official track forecast is shifted to the east, consistent with
the latest consensus guidance.
Ian should move over the Gulf Stream tonight and tomorrow for a
longer period of time than previously anticipated, which should
maintain Ian's central convection. Additionally, an increased
pressure gradient on the northwestern side from a stationary front
near the southeastern US, should provide a boost to the wind speeds
on that side of the storm. We now expect Ian to become a hurricane
again by this evening. As the system approaches South Carolina, Ian
should maintain this intensity, and Hurricane Warnings have been
issued for the entire coast of South Carolina. This scenario is
consistent with the global and regional hurricane model guidance.
It is worth noting that Ian is forecast to have atypical structure
when it nears the southeastern United States, and strong winds will
extend well ahead of the center, even on the northwestern side.
Key Messages:
1. There is a danger of life-threatening storm surge through Friday
along the coasts of northeast Florida, Georgia, and South Carolina.
Residents in these areas should follow any advice given by local
officials.
2. Hurricane-force winds are expected across the South Carolina
coast beginning early Friday, where a Hurricane Warning has been
issued. Hurricane conditions are possible by tonight along the
coasts of northeastern Florida and Georgia, where a Hurricane Watch
is in effect. Preparations should be rushed to completion since
tropical-storm-force winds will begin well before the center
approaches the coast.
3. Ongoing major-to-record river flooding will continue across
portions of central Florida, with considerable flooding in northern
Florida. Considerable flash and urban flooding is expected across
coastal portions of northeast Florida through Friday. Local
significant flooding in southeastern Georgia and eastern South
Carolina is expected through the end of the week.
FORECAST POSITIONS AND MAX WINDS
INIT 29/1500Z 28.7N 80.4W 60 KT 70 MPH
12H 30/0000Z 30.0N 79.9W 65 KT 75 MPH
24H 30/1200Z 31.8N 79.8W 65 KT 75 MPH
36H 01/0000Z 34.0N 80.3W 45 KT 50 MPH...INLAND
48H 01/1200Z 35.9N 81.1W 30 KT 35 MPH...POST-TROP/EXTRATROP
60H 02/0000Z 37.0N 82.0W 15 KT 15 MPH...POST-TROP/EXTRATROP
72H 02/1200Z...DISSIPATED
$$
Forecaster Blake
Arcadian, you are awesome! You have done so much to inform and warn people here! Even though I’m in a different area of the country, I keep checking in to learn from you. To all our PS friends in Florida (or your loved ones) my heart goes out to you!
000
WTNT44 KNHC 292059
TCDAT4
Hurricane Ian Discussion Number 29
NWS National Hurricane Center Miami FL AL092022
500 PM EDT Thu Sep 29 2022
Ian remains a hybrid tropical cyclone with characteristics of an
extratropical low, including a comma-pattern on satellite images
and some frontal features in the outer circulation. The cyclone
continues to have a warm core, however, and all indications are that
it will re-develop strong convection over the center overnight.
Based on Melbourne Doppler radar velocity data of persistent 70-80-
kt winds from 5-10 thousand feet, and earlier sustained winds of
about 60 kt near that band from an observation in New Smyrna Beach,
the initial wind speed is raised to 65 kt. This makes Ian a
hurricane again. An Air Force Reserve Hurricane Hunter aircraft
is scheduled to fly through Ian this evening and will provide a
better intensity estimate.
Ian finally appears to be making more of a turn to the north-
northeast this afternoon. The hurricane should turn to the north
overnight due to the incoming trough diving southward over the
southern United States and then north-northwestward on Saturday
with an increase in forward speed. While the overall synoptic
pattern is similar in all of the models, Ian has been uncooperative
and remains right of the previous track. Thus, the new forecast is
adjusted to the east, and lies east of the model consensus.
Assuming Ian re-develops thunderstorms near the core overnight, it
should take the expected north-northwest turn, but this shouldn't
be considered a confident forecast yet. Because of the
uncertainty, the Hurricane Warning has been extended eastward into
North Carolina to Cape Fear.
The hurricane is moving over the Gulf Stream for the next day or
so, where it has some time for further re-intensification.
Additionally, the trough interaction should provide a baroclinic
energy kick. These factors point to some strengthening before
landfall tomorrow. The new forecast is close to the GFS and
regional hurricane models and is a bit stronger than before. It
should be emphasized that while we don't expect Ian to be a classic
hurricane at landfall, this does not diminish the danger it poses.
Strong winds and storm surge will also extend far from the center
and will begin well before the center arrives.
Key Messages:
1. There is a danger of life-threatening storm surge through Friday
along the coasts of northeast Florida, Georgia, and South Carolina.
Residents in these areas should follow any advice given by local
officials.
2. Hurricane-force winds are expected across coasts of South
Carolina and southeastern North Carolina beginning early Friday,
where a Hurricane Warning is in effect. Hurricane conditions are
possible by tonight along the coasts of northeastern Florida,
Georgia, and North Carolina where a Hurricane Watch is in
effect. Preparations should be rushed to completion since
tropical-storm-force winds will begin well before the center
approaches the coast.
3. Ongoing major-to-record river flooding will continue across
portions of central Florida, with considerable flooding in northern
Florida. Considerable flash and urban flooding is expected across
coastal portions of northeast Florida through Friday. Local
significant flooding in southeastern Georgia and eastern South
Carolina is expected through the end of the week.
FORECAST POSITIONS AND MAX WINDS
INIT 29/2100Z 29.3N 79.9W 65 KT 75 MPH
12H 30/0600Z 30.5N 79.4W 70 KT 80 MPH
24H 30/1800Z 32.8N 79.6W 70 KT 80 MPH
36H 01/0600Z 35.0N 80.4W 30 KT 35 MPH...POST-TROP/EXTRATROP
48H 01/1800Z 36.5N 81.0W 15 KT 15 MPH...POST-TROP/EXTRATROP
60H 02/0600Z...DISSIPATED
$$
Forecaster Blake