ATL: FIONA - Post-Tropical - Discussion

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Re: ATL: FIONA - Hurricane - Discussion

#1441 Postby Hurricane2022 » Wed Sep 21, 2022 4:32 pm

Looks like Fiona is intensifying again. Waiting for Recon data.
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Re: ATL: FIONA - Hurricane - Discussion

#1442 Postby Iceresistance » Wed Sep 21, 2022 5:39 pm

Either Fiona has a poor pressure gradient, or she's a very strong storm because Recon is barely inside the storm and the extrapolated pressure is already below 1000 mb.
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Re: ATL: FIONA - Hurricane - Discussion

#1443 Postby kevin » Wed Sep 21, 2022 6:10 pm

Extrapolated pressure of 933.0 mb so far
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Re: ATL: FIONA - Hurricane - Discussion

#1444 Postby wx98 » Wed Sep 21, 2022 6:10 pm

933 extrapolated on the first pass
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Re: ATL: FIONA - Hurricane - Discussion

#1445 Postby aspen » Wed Sep 21, 2022 6:14 pm

Extrapolated pressure is the same as last flight. Strangely, the NW quadrant has zero FL winds above 90 kt. Maybe another EWRC is about to commence?
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Re: ATL: FIONA - Hurricane - Discussion

#1446 Postby sikkar » Wed Sep 21, 2022 6:17 pm

aspen wrote:Extrapolated pressure is the same as last flight. Strangely, the NW quadrant has zero FL winds above 90 kt. Maybe another EWRC is about to commence?


Most recent Microwave shows a semi open southern eyewall. Something is going on.
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Re: ATL: FIONA - Hurricane - Discussion

#1447 Postby kevin » Wed Sep 21, 2022 6:19 pm

119 kt FL winds in the SE quadrant, SFMR only 91 kt so far.
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Re: ATL: FIONA - Hurricane - Discussion

#1448 Postby ElectricStorm » Wed Sep 21, 2022 6:21 pm

Eye drop 935/16, supports 933-934
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Re: ATL: FIONA - Hurricane - Discussion

#1449 Postby aspen » Wed Sep 21, 2022 6:21 pm

kevin wrote:119 kt FL winds in the SE quadrant, SFMR only 91 kt so far.

Reminds me of Hurricane Teddy near its peak, with Cat 4 FL winds but abnormally low SFMR. They even look similar too.
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Re: ATL: FIONA - Hurricane - Discussion

#1450 Postby galaxy401 » Wed Sep 21, 2022 6:34 pm

Seems to be a common behavior for large hurricanes that are gaining latitude in the open Atlantic. Pressure can still drop to low levels but wind speed doesn't seem to increase at all.
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Re: ATL: FIONA - Hurricane - Discussion

#1451 Postby Iceresistance » Wed Sep 21, 2022 6:41 pm

If Y'all are wondering why the NW Eyewall dropsonde winds are only 40 knots is because they just missed the strongest winds and the location is the outer edge of the eye.
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Re: ATL: FIONA - Hurricane - Discussion

#1452 Postby Iceresistance » Wed Sep 21, 2022 6:43 pm

sikkar wrote:
aspen wrote:Extrapolated pressure is the same as last flight. Strangely, the NW quadrant has zero FL winds above 90 kt. Maybe another EWRC is about to commence?


Most recent Microwave shows a semi open southern eyewall. Something is going on.


I've noticed that Recon has a double wind maxima reading on the SMFR.
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Re: ATL: FIONA - Hurricane - Discussion

#1453 Postby cheezyWXguy » Wed Sep 21, 2022 6:47 pm

Iceresistance wrote:
sikkar wrote:
aspen wrote:Extrapolated pressure is the same as last flight. Strangely, the NW quadrant has zero FL winds above 90 kt. Maybe another EWRC is about to commence?


Most recent Microwave shows a semi open southern eyewall. Something is going on.


I've noticed that Recon has a double wind maxima reading on the SMFR.

I dunno, if there’s any at all it’s pretty minuscule. Looks more like a storm that’s been dealing with shear all day
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Re: ATL: FIONA - Hurricane - Discussion

#1454 Postby InfernoFlameCat » Wed Sep 21, 2022 7:07 pm

She is transforming at sunset into an ogre of a hurricane. She is huge.
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Re: ATL: FIONA - Hurricane - Discussion

#1455 Postby Iceresistance » Wed Sep 21, 2022 7:21 pm

VDM has Fiona's eye open to the SE, and it's at 935 mb. Maybe an EWRC or something weird? Idk :roll:
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Re: ATL: FIONA - Hurricane - Discussion

#1456 Postby AJC3 » Wed Sep 21, 2022 7:25 pm

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Re: ATL: FIONA - Hurricane - Discussion

#1457 Postby Iceresistance » Wed Sep 21, 2022 7:32 pm

932.8 mb Extrapolated
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Re: ATL: FIONA - Hurricane - Discussion

#1458 Postby tolakram » Wed Sep 21, 2022 7:44 pm

Image

Image
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Re: ATL: FIONA - Hurricane - Discussion

#1459 Postby sikkar » Wed Sep 21, 2022 7:49 pm

This buoy should provide some interesting data. Winds are already above 40kts.
https://www.ndbc.noaa.gov/station_page. ... m=E&tz=STN
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Re: ATL: FIONA - Hurricane - Discussion

#1460 Postby aspen » Wed Sep 21, 2022 8:00 pm

Iceresistance wrote:VDM has Fiona's eye open to the SE, and it's at 935 mb. Maybe an EWRC or something weird? Idk :roll:

Probably a combination of slight/moderate shear eroding the SE eyewall, and an EWRC trying to start again. There are multiple double wind maxima seen on this flight.
Image
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