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Hurricane Ian


Scott747
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617 
WTNT64 KNHC 281036
TCUAT4

Hurricane Ian Tropical Cyclone Update
NWS National Hurricane Center Miami FL       AL092022
635 AM EDT Wed Sep 28 2022

...IAN RAPIDLY INTENSIFYING...
...CONDITIONS RAPIDLY DETERIORATING ALONG THE SOUTHWEST FLORIDA 
COAST...

Recent data from a NOAA Hurricane Hunter aircraft indicate 
that maximum sustained winds have increased to near 155 mph (250 
km/h). A special advisory will be issued by 7 AM EDT (1100 UTC) to 
reflect this change and update the forecast. 


SUMMARY OF 635 AM EDT...1035 UTC...INFORMATION
----------------------------------------------
LOCATION...25.9N 82.8W
ABOUT 65 MI...105 KM WSW OF NAPLES FLORIDA
ABOUT 80 MI...130 KM SSW OF PUNTA GORDA FLORIDA
MAXIMUM SUSTAINED WINDS...155 MPH...250 KM/H
PRESENT MOVEMENT...NNE OR 15 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...936 MB...27.73 INCHES

$$
Forecaster Papin/Blake
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As I stated earlier, I am not surprised. I did my PHD work on this exact thing. Vorticity-rich air from the coastline/land is feeding into the eyewall. The amount of vorticity generated as hurricane winds collide with land is enormous, and this is tilted up in the eyewall, creating super-charged vortical convective towers. Plus all this happened right at DMAX

02DF09C5-495A-4219-8424-91D5C6217146.jpeg

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5 minutes ago, turtlehurricane said:

As I stated earlier, I am not surprised. I did my PHD work on this exact thing. Vorticity-rich air from the coastline/land is feeding into the eyewall. The amount of vorticity generated as hurricane winds collide with land is enormous, and this is tilted up in the eyewall, creating super-charged vortical convective towers. Plus all this happened right at DMAX

02DF09C5-495A-4219-8424-91D5C6217146.jpeg

Thank you sir. 

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There are several analog hurricanes which hit SW FL from the S/SSW. The most similar ones are Charley and especially the infamous Oct 1944 Cuba-Florida hurricane. The Oct 1944 storm was similar in size to Ian and much larger than Charley, and hit as a category 3 with pressure of 949 mb.

The similarity of the Oct 1944 hurricane to Ian is quite concerning for the insurance industry in FL, which is already reeling from the recent loss of numerous insurance providers.  If the Oct 1944 'cane were to hit today it be expected to cause direct economic losses (damage) of around $80 billion - adjusting for per-capita wealth and population increases as well inflation! See the tweet below for methodology for calculating normalized losses from past hurricanes.
 

 

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9 minutes ago, jconsor said:

There are several analog hurricanes which hit SW FL from the S/SSW. The most similar ones are Charley and especially the infamous Oct 1944 Cuba-Florida hurricane. The Oct 1944 storm was similar in size to Ian and much larger than Charley, and hit as a category 3 with pressure of 949 mb.

The similarity of the Oct 1944 hurricane to Ian is quite concerning for the insurance industry in FL, which is already reeling from the recent loss of numerous insurance providers.  If the Oct 1944 'cane were to hit today it be expected to cause direct economic losses (damage) of around $80 billion - adjusting for per-capita wealth and population increases as well inflation! See the tweet below for methodology for calculating normalized losses from past hurricanes.
 

 

Being in the industry, the people will suffer too. So many policies dont have wind/hail coverage or have wind/hail deductibles of 5%. 

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15 minutes ago, turtlehurricane said:

As I stated earlier, I am not surprised. I did my PHD work on this exact thing. Vorticity-rich air from the coastline/land is feeding into the eyewall. The amount of vorticity generated as hurricane winds collide with land is enormous, and this is tilted up in the eyewall, creating super-charged vortical convective towers. Plus all this happened right at DMAX

02DF09C5-495A-4219-8424-91D5C6217146.jpeg

Very interesting, @turtlehurricane!   Do you have any published papers (either by yourself or others) that you can share on the topic you mentioned - frictional convergence near the coast feeding high vorticity into the eyewall and amplifying the vortex?  Thanks.

A quick Google scholar search yielded two papers from the 1990s, one on Hurricane Andrew and one on Irene which hit S FL in 1999:
https://journals.ametsoc.org/view/journals/bams/77/3/1520-0477_1996_077_0543_haifdo_2_0_co_2.xml

https://www.iweathernet.com/print/irene-1999.pdf
(Easier to read version at https://www.iweathernet.com/tropical/hurricane-irene-1999-intensification-and-downbursts-after-landfall)

Here is a more recent one I found:
https://www.sciencedirect.com/science/article/pii/S2225603219300499
 

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Latest VDM from recon

 

Product: NOAA Vortex Message (URNT12 KWBC)
Transmitted: 28th day of the month at 10:55Z
Agency: National Oceanic and Atmospheric Administration (NOAA)
Aircraft: Lockheed WP-3D Orion (Reg. Num. N42RF)
Storm Name: Ian
Storm Number & Year: 09 in 2022 (flight in the North Atlantic basin)
Mission Number: 28
Observation Number: 06 ( See all messages of this type for this mission. )

A. Time of Center Fix: 28th day of the month at 10:23:12Z
B. Center Fix Coordinates: 25.79N 82.86W
B. Center Fix Location: 85 statute miles (137 km) to the SW (227°) from Fort Myers, FL, USA.
C. Minimum Height at Standard Level: Not Available
D. Minimum Sea Level Pressure: 940mb (27.76 inHg)
E. Dropsonde Surface Wind at Center: From 55° at 19kts (From the NE at 22mph)
F. Eye Character: Closed
G. Eye Shape & Diameter: Circular with a diameter of 20 nautical miles (23 statute miles)
H. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 137kts (157.7mph)
I. Location & Time of the Estimated Maximum Surface Wind Inbound: 15 nautical miles (17 statute miles) to the WNW (286°) of center fix at 10:13:09Z
J. Maximum Flight Level Wind Inbound: From 20° at 160kts (From the NNE at 184.1mph)
K. Location & Time of the Maximum Flight Level Wind Inbound: 15 nautical miles (17 statute miles) to the WNW (286°) of center fix at 10:13:02Z
L. Estimated (by SFMR or visually) Maximum Surface Wind Outbound: 101kts (116.2mph)
M. Location & Time of the Estimated Maximum Surface Wind Outbound: 21 nautical miles (24 statute miles) to the ENE (58°) of center fix at 10:41:21Z
N. Maximum Flight Level Wind Outbound: From 154° at 139kts (From the SSE at 160.0mph)
O. Location & Time of the Maximum Flight Level Wind Outbound: 18 nautical miles (21 statute miles) to the ENE (60°) of center fix at 10:40:39Z
P. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 17°C (63°F) at a pressure alt. of 2,452m (8,045ft)
Q. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 24°C (75°F) at a pressure alt. of 2,451m (8,041ft)
R. Dewpoint Temp (collected at same location as temp inside eye): 14°C (57°F)
R. Sea Surface Temp (collected at same location as temp inside eye): Not Available
S. Fix Determined By: Penetration, Radar, Wind, Pressure and Temperature
S. Fix Level: Other - Not surface, 1500ft, 925mb, 850mb, 700mb, 500mb, 400mb, 300mb or 200mb
T. Navigational Fix Accuracy: 0.01 nautical miles
T. Meteorological Accuracy: 2 nautical miles

Remarks Section:
 

Maximum Flight Level Wind: 160kts (~ 184.1mph) which was observed 15 nautical miles (17 statute miles) to the WNW (286°) from the flight level center at 10:13:02Z
Maximum Flight Level Temp: 26°C (79°F) which was observed 11 nautical miles (13 statute miles) to the E (84°) from the flight level center
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2 minutes ago, WxWatcher007 said:

Latest VDM from recon

 

Product: NOAA Vortex Message (URNT12 KWBC)
Transmitted: 28th day of the month at 10:55Z
Agency: National Oceanic and Atmospheric Administration (NOAA)
Aircraft: Lockheed WP-3D Orion (Reg. Num. N42RF)
Storm Name: Ian
Storm Number & Year: 09 in 2022 (flight in the North Atlantic basin)
Mission Number: 28
Observation Number: 06 ( See all messages of this type for this mission. )

A. Time of Center Fix: 28th day of the month at 10:23:12Z
B. Center Fix Coordinates: 25.79N 82.86W
B. Center Fix Location: 85 statute miles (137 km) to the SW (227°) from Fort Myers, FL, USA.
C. Minimum Height at Standard Level: Not Available
D. Minimum Sea Level Pressure: 940mb (27.76 inHg)
E. Dropsonde Surface Wind at Center: From 55° at 19kts (From the NE at 22mph)
F. Eye Character: Closed
G. Eye Shape & Diameter: Circular with a diameter of 20 nautical miles (23 statute miles)
H. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 137kts (157.7mph)
I. Location & Time of the Estimated Maximum Surface Wind Inbound: 15 nautical miles (17 statute miles) to the WNW (286°) of center fix at 10:13:09Z
J. Maximum Flight Level Wind Inbound: From 20° at 160kts (From the NNE at 184.1mph)
K. Location & Time of the Maximum Flight Level Wind Inbound: 15 nautical miles (17 statute miles) to the WNW (286°) of center fix at 10:13:02Z
L. Estimated (by SFMR or visually) Maximum Surface Wind Outbound: 101kts (116.2mph)
M. Location & Time of the Estimated Maximum Surface Wind Outbound: 21 nautical miles (24 statute miles) to the ENE (58°) of center fix at 10:41:21Z
N. Maximum Flight Level Wind Outbound: From 154° at 139kts (From the SSE at 160.0mph)
O. Location & Time of the Maximum Flight Level Wind Outbound: 18 nautical miles (21 statute miles) to the ENE (60°) of center fix at 10:40:39Z
P. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 17°C (63°F) at a pressure alt. of 2,452m (8,045ft)
Q. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 24°C (75°F) at a pressure alt. of 2,451m (8,041ft)
R. Dewpoint Temp (collected at same location as temp inside eye): 14°C (57°F)
R. Sea Surface Temp (collected at same location as temp inside eye): Not Available
S. Fix Determined By: Penetration, Radar, Wind, Pressure and Temperature
S. Fix Level: Other - Not surface, 1500ft, 925mb, 850mb, 700mb, 500mb, 400mb, 300mb or 200mb
T. Navigational Fix Accuracy: 0.01 nautical miles
T. Meteorological Accuracy: 2 nautical miles

Remarks Section:
 

Maximum Flight Level Wind: 160kts (~ 184.1mph) which was observed 15 nautical miles (17 statute miles) to the WNW (286°) from the flight level center at 10:13:02Z
Maximum Flight Level Temp: 26°C (79°F) which was observed 11 nautical miles (13 statute miles) to the E (84°) from the flight level center

If it doesn't reach category 5 (hopefully a little dry air can disrupt the core), this will be a great candidate for a post review category 5.

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