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Fiona | 130 mph and 932 mb peak | Extremely powerful Bomb Cyclone


Iceresistance

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2 hours ago, Iceresistance said:

Are you THAT serious JetBlue!? They apparently flew through the eye of Fiona while she was a category 2, and the pilots had the absolute Nerves of Steel to do so!

 

I can't find the Tweet that has it, but it has been confirmed by either webberweather or Andy Hazelton.

Nerves of steel maybe.  Idiots?  Yes definitely.  They should have been instructed to go around.

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1 hour ago, MaineJay said:

Sable Island is just SE of Nova Scotia, looking like it'll be wild out there. 

Screenshot_20220921-193741.thumb.png.ee6bd12269e9c9fd448c6f136df890f4.png

ezgif-1-4d865ac919.gif.6d17fe4782c6130b66287aa2d47a1864.gif

Well see how long the webcam holds out.

https://www.see.cam/ca/07/sable-island/sable-island-airport

 

 

The book the perfect storm makes a pretty good case for Sable Island as one of the premier shipwreck spots. Real graveyard of the Atlantic there. Storms like this must  have a lot to do with it. You're probably talking 40 foot breakers there. 

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A little breezy in Bermuda

https://www.earthcam.com/world/bermuda/pembroke/?cam=bermuda

https://www.portbermudawebcam.com/

http://www.weather.bm/images/Satellite/LocalVisIRRadarSferic/2022-09-22-1305_SAT004.jpeg

See the waves hitting the beach on this cam https://www.skylinewebcams.com/en/webcam/bermuda/st-george-s-parish/st-george-s-parish/cahow.html

Should note that cahow is on Nonsuch Island located on the NE side of Bermuda, well protected from western swell and somewhat protected by reefs from the east. 

1355083774_ScreenShot2022-09-22at9_29_55AM.thumb.png.9748a191535cb4440c6345fbe3ec4a78.png

Edited by StretchCT
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Highest I could find on GFS was 86kts near landfall. 930 is incredible. Current record for Nova Scotia is 950 and the lowest pressure ever in Canada was in Newfoundland on Jan 20th 1977 at 940mb. So a good chance of breaking the all time low pressure record for Canada. 

1643259949_ScreenShot2022-09-22at9_41_54AM.thumb.png.6d0ac1d8b0dc37d3b120ff8d3281b209.png

Euro is bananas.

425319426_ScreenShot2022-09-22at9_45_53AM.thumb.png.bbff2ab391e8625667eb2efa78916e9f.png

GFS Gusts - in kts

1431452350_gfsgusts.thumb.png.7ea1ac41f5f06186cefe0f2fc9745058.png

1719502690_ukiegusts.thumb.png.799300ad79bb51f4f9a5a423ecb84340.png

Euro gusts

1786517389_eurogusts.thumb.png.bebc9196351ffea7df7f58f34cdebb7c.png

No gusts to hour for ukie, but this is pretty much the highest over land.

 

Edited by StretchCT
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Recon so far...

Two drops with 937mb on them

One drop with 108kt (124mph) wind at surface and top wind of 135kts at 892mb.

One drop with 98kt (113 mph) wind at surface and top wind of 134kts at 892mb

One drop with 101kts (116mph) at surface and top wind of 143kts (165mph) at 911mb

HDOBs - top flight wind of 125kts and top sfmr wind of 107kts.

Latest vortex: 937mb, closed circular eye 32nm. Top sfmr wind 122mph.  max flight level wind 146mph.

HDOB Trend

62957342_ScreenShot2022-09-22at10_23_13AM.png.234748e0feb9bc8efee3bb10ff538336.png

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NHC Disco basically saying Fiona has peaked, but what was really cool was the mention of the saildrone they have 45nm east of the center.

Spoiler

Hurricane Fiona Discussion Number  33
NWS National Hurricane Center Miami FL       AL072022
1100 AM EDT Thu Sep 22 2022

The satellite presentation of the hurricane is not quite as 
impressive as yesterday.  The large eye has become cloud filled and 
the surrounding cloud top temperatures are not quite as cold. An Air 
Force Reserve reconnaissance aircraft has very recently reported a 
peak 700-mb flight-level wind of 126 kt in the southeastern eyewall. 
The peak SFMR winds have been 107 kt and latest minimum central 
pressure is around 936 mb.  These data support maintaining the 
initial intensity of 115 kt. A NOAA Saildrone located about 45 n mi 
east of the center has recently reported sustained winds of 67 kt 
and a significant wave height of 50 ft. 

The hurricane is beginning to accelerate north-northeastward with an 
initial motion estimate of 025/13 kt. Additional acceleration is 
expected while Fiona moves north-northeastward along the southern 
edge of the mid-latitude westerlies through tonight. On Friday, a 
vigorous mid-latitude trough moving off the coast of the 
northeastern U.S. is expected to steer Fiona northward toward 
Atlantic Canada.  The storm is forecast to pass over portions of 
eastern Nova Scotia by Saturday morning, and a slower northward or 
north-northeastward motion over the Gulf of St. Lawrence and 
portions of Newfoundland and Labrador is expected after that time. 
The track guidance remains in very good agreement, and the new 
official forecast is once again essentially an update of the 
previous one.

Only a slight decrease in intensity is predicted over the next 12-24 
hours while Fiona remains over warm waters and in a low-shear 
environment. By 36 hours, interaction with the aforementioned trough 
will begin extratropical transition, and this process is forecast to 
be complete by 48 hours when the system is near Nova Scotia.  The 
global model guidance indicates that the post-tropical cyclone will 
continue to produce hurricane-force winds when it reaches Nova 
Scotia.  The NHC intensity forecast is similar to the previous 
advisory and closely follows the global model guidance during the 
post-tropical phase. 

Based on the latest forecast the Canadian Hurricane Centre has 
issued Hurricane and Tropical Storm Watches for much of Atlantic 
Canada. 


Key Messages:

1. Hurricane conditions are expected on Bermuda tonight through 
Friday morning.

2. Fiona is expected to affect portions of Atlantic Canada as a 
powerful hurricane-force cyclone late Friday and Saturday, and 
significant impacts from high winds, storm surge, and heavy rainfall 
are becoming increasingly likely. Hurricane and Tropical Storm 
Watches have been issued for much of Atlantic Canada.

3. Large swells generated by Fiona are expected to cause 
life-threatening surf and rip current conditions along much of the 
east coast of the United States, the Bahamas, Bermuda, and Atlantic 
Canada during the next few days.


FORECAST POSITIONS AND MAX WINDS

INIT  22/1500Z 28.6N  70.2W  115 KT 130 MPH
 12H  23/0000Z 30.7N  68.8W  110 KT 125 MPH
 24H  23/1200Z 34.6N  65.2W  110 KT 125 MPH
 36H  24/0000Z 40.6N  61.8W  105 KT 120 MPH
 48H  24/1200Z 45.5N  61.2W   80 KT  90 MPH...POST-TROP/EXTRATROP
 60H  25/0000Z 48.1N  60.2W   65 KT  75 MPH...POST-TROP/EXTRATROP
 72H  25/1200Z 51.8N  59.2W   45 KT  50 MPH...POST-TROP/EXTRATROP
 96H  26/1200Z 58.9N  58.6W   35 KT  40 MPH...POST-TROP/EXTRATROP
120H  27/1200Z 64.2N  57.8W   35 KT  40 MPH...POST-TROP/EXTRATROP

$$
Forecaster Brown

NNNN

 

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11 minutes ago, StretchCT said:

NHC Disco basically saying Fiona has peaked, but what was really cool was the mention of the saildrone they have 45nm east of the center.

  Hide contents

Hurricane Fiona Discussion Number  33
NWS National Hurricane Center Miami FL       AL072022
1100 AM EDT Thu Sep 22 2022

The satellite presentation of the hurricane is not quite as 
impressive as yesterday.  The large eye has become cloud filled and 
the surrounding cloud top temperatures are not quite as cold. An Air 
Force Reserve reconnaissance aircraft has very recently reported a 
peak 700-mb flight-level wind of 126 kt in the southeastern eyewall. 
The peak SFMR winds have been 107 kt and latest minimum central 
pressure is around 936 mb.  These data support maintaining the 
initial intensity of 115 kt. A NOAA Saildrone located about 45 n mi 
east of the center has recently reported sustained winds of 67 kt 
and a significant wave height of 50 ft. 

The hurricane is beginning to accelerate north-northeastward with an 
initial motion estimate of 025/13 kt. Additional acceleration is 
expected while Fiona moves north-northeastward along the southern 
edge of the mid-latitude westerlies through tonight. On Friday, a 
vigorous mid-latitude trough moving off the coast of the 
northeastern U.S. is expected to steer Fiona northward toward 
Atlantic Canada.  The storm is forecast to pass over portions of 
eastern Nova Scotia by Saturday morning, and a slower northward or 
north-northeastward motion over the Gulf of St. Lawrence and 
portions of Newfoundland and Labrador is expected after that time. 
The track guidance remains in very good agreement, and the new 
official forecast is once again essentially an update of the 
previous one.

Only a slight decrease in intensity is predicted over the next 12-24 
hours while Fiona remains over warm waters and in a low-shear 
environment. By 36 hours, interaction with the aforementioned trough 
will begin extratropical transition, and this process is forecast to 
be complete by 48 hours when the system is near Nova Scotia.  The 
global model guidance indicates that the post-tropical cyclone will 
continue to produce hurricane-force winds when it reaches Nova 
Scotia.  The NHC intensity forecast is similar to the previous 
advisory and closely follows the global model guidance during the 
post-tropical phase. 

Based on the latest forecast the Canadian Hurricane Centre has 
issued Hurricane and Tropical Storm Watches for much of Atlantic 
Canada. 


Key Messages:

1. Hurricane conditions are expected on Bermuda tonight through 
Friday morning.

2. Fiona is expected to affect portions of Atlantic Canada as a 
powerful hurricane-force cyclone late Friday and Saturday, and 
significant impacts from high winds, storm surge, and heavy rainfall 
are becoming increasingly likely. Hurricane and Tropical Storm 
Watches have been issued for much of Atlantic Canada.

3. Large swells generated by Fiona are expected to cause 
life-threatening surf and rip current conditions along much of the 
east coast of the United States, the Bahamas, Bermuda, and Atlantic 
Canada during the next few days.


FORECAST POSITIONS AND MAX WINDS

INIT  22/1500Z 28.6N  70.2W  115 KT 130 MPH
 12H  23/0000Z 30.7N  68.8W  110 KT 125 MPH
 24H  23/1200Z 34.6N  65.2W  110 KT 125 MPH
 36H  24/0000Z 40.6N  61.8W  105 KT 120 MPH
 48H  24/1200Z 45.5N  61.2W   80 KT  90 MPH...POST-TROP/EXTRATROP
 60H  25/0000Z 48.1N  60.2W   65 KT  75 MPH...POST-TROP/EXTRATROP
 72H  25/1200Z 51.8N  59.2W   45 KT  50 MPH...POST-TROP/EXTRATROP
 96H  26/1200Z 58.9N  58.6W   35 KT  40 MPH...POST-TROP/EXTRATROP
120H  27/1200Z 64.2N  57.8W   35 KT  40 MPH...POST-TROP/EXTRATROP

$$
Forecaster Brown

NNNN

 

I hope it does not sink, because one of them survived Sam in 2021. 

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Continental trof is closing in on her. Should be a pretty impressive extra tropical transition once she's captured. 

 The front that moved through here today dropped almost 2 inches, the same front will likely create a PRE for areas in Atlantic Canada.

ECMWF at 922mb in the frame the front that before landfall.

CODNEXLAB-GOES-East-continental-conus-08-19_16Z-20220922_map_-23-1n-10-100.thumb.gif.ec505708e90c454e04bdaa923b728d1c.gif

Screenshot_20220922-152310.thumb.png.4197a76223f87cccc64425a97b33b273.png

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Latest microwave shows a bit of an opening in the inner eyewall on the south, but that's kinda been characteristic of this storm. It still has concentric connective rings that seen to be contacting and replenishing the eyewall, instead of going through the ERCs that we've seen in other storms.

  Each one really has a personality.

2098485028_20220922.172724.AL072022.amsr2.gcom-w1_89H.115kts_64p6.1p0(1).thumb.jpg.cb4ca1770af2cc4526eba64afac30f19.jpg

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At it’s current trajectory, it is (again) staying [edit: slightly] west of guidance… would need to be going NE instead of NNE if it were to follow the center of the cone.

 

9493E0F7-6AB3-4031-B7A2-290C0DB6D0A6.jpeg

Edited by Burr
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Help… For those of us who sit in the back of the classroom, some of the characteristics we’d expect to see during a transition from tropical (warm core) to hybrid / extra-tropical (cold core) include… 

~ expanding wind field

~ asymmetry of the vertical stack

~ acceleration of forward speed

… what else?

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