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Category Five Hurricane Lee


WxWatcher007
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4 minutes ago, GaWx said:

0Z CMC landfall Eastport, ME, on 9/16. Eastport has the largest tidal range of any place on the E coast by the way.

Gefs spread really opened up again threatening the NE even more again. Also did I see the hafs-A jump almost an entire degree south at 0z out to 75hrs

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New VORTEX message.

Couple notes:
  • 28C eye temperature.
  • 14nm circular eye, 1nm less than last recon
  • 158kt SFMR

—————

Product: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 8th day of the month at 5:26Z
Agency: United States Air Force 
Aircraft: Lockheed WC-130J Hercules with reg. number AF97-5306 
Storm Name: Lee
Storm Number & Year: 13 in 2023 (flight in the North Atlantic basin)
Mission Number: 2
Observation Number: 28

A. Time of Center Fix: 8th day of the month at 4:54:40Z
B. Center Fix Coordinates: 17.40N 52.87W (View map) 
B. Center Fix Location: 538 statute miles (866 km) to the ENE (57°) from Bridgetown, Barbados.
C. Minimum Height at Standard Level: 2,508m (8,228ft) at 700mb
D. Minimum Sea Level Pressure: 928mb (27.41 inHg)
E. Dropsonde Surface Wind at Center: From 330° at 20kts (From the NNW at 23mph)
F. Eye Character: Closed
G. Eye Shape & Diameter: Circular with a diameter of 14 nautical miles (16 statute miles)
H. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 124kts (142.7mph)
I. Location & Time of the Estimated Maximum Surface Wind Inbound: 10 nautical miles (12 statute miles) to the SE (137°) of center fix at 4:51:30Z
J. Maximum Flight Level Wind Inbound: From 228° at 131kts (From the SW at 150.8mph)
K. Location & Time of the Maximum Flight Level Wind Inbound: 11 nautical miles (13 statute miles) to the SE (138°) of center fix at 4:51:00Z
L. Estimated (by SFMR or visually) Maximum Surface Wind Outbound: 158kts (181.8mph)
M. Location & Time of the Estimated Maximum Surface Wind Outbound: 8 nautical miles to the NNW (334°) of center fix at 4:59:00Z
N. Maximum Flight Level Wind Outbound: From 62° at 153kts (From the ENE at 176.1mph)
O. Location & Time of the Maximum Flight Level Wind Outbound: 9 nautical miles to the NNW (330°) of center fix at 4:59:30Z
P. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 13°C (55°F) at a pressure alt. of 3,056m (10,026ft)
Q. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 28°C (82°F) at a pressure alt. of 3,038m (9,967ft)
R. Dewpoint Temp (collected at same location as temp inside eye): -1°C (30°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: 700mb
T. Navigational Fix Accuracy: 0.02 nautical miles
T. Meteorological Accuracy: 1 nautical mile

Remarks Section:
 

Maximum Flight Level Wind: 153kts (~ 176.1mph) which was observed 9 nautical miles to the NNW (330°) from the flight level center at 4:59:30Z
 
 

 

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9 minutes ago, yoda said:

Looking at the 00z EURO, I am beginning to wonder if Margot is closer to Lee, will that have any effect on the h5 level?  If you compare last nights 00z run at 168 to tonights at 144... Margot is much closer to Lee and the h5 becomes different up top

At 168 of the 0Z Euro, Margot is 200 miles W of its 12Z 180 position while Lee is 200 miles S of its 12Z 180 location.

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3 minutes ago, RU848789 said:

The Euro is also about 18-24 hours "slower" than the GFS/CMC - lots to resolve before we really have a handle on this one...

It is the "lots to resolve" that makes for the most interesting forecast discussions!

 No landfall through 240 with Lee likely not even hitting Canada afterward.

 

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2 minutes ago, GaWx said:

It is the "lots to resolve" that makes for the most interesting forecast discussions!

 No landfall through 240 with Lee likely not even hitting Canada afterward.

 

True.  The Euro was the westernmost model at landfall at 12Z and now it's the easternmost at 0Z, looking a lot like the CMC at 12Z, which also didn't quite make it to even hitting Canada, while the 0Z CMC hits downeast Maine like the 12Z Euro did - they basically flip-flopped.  While the GFS moved from a Newfoundland landfall to a Nova Scotia landfall.    I know op runs are not to be trusted at this range, but it's fun to look at them...

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Ironically, the 0Z UKMET initialized Lee way down at 941 mb, which is much lower than the other major models! But just 12 hours later on the run, the SLP rises way up to 967!

 This run is pretty similar to the 12Z run with a recurve near 70W:


HURRICANE LEE        ANALYSED POSITION : 17.1N  51.8W

     ATCF IDENTIFIER : AL132023

                        LEAD                 CENTRAL     MAXIMUM WIND
      VERIFYING TIME    TIME   POSITION   PRESSURE (MB)  SPEED (KNOTS)
      --------------    ----   --------   -------------  -------------
    0000UTC 08.09.2023    0  17.1N  51.8W      941           110
    1200UTC 08.09.2023   12  17.9N  53.9W      967            77
    0000UTC 09.09.2023   24  19.2N  55.7W      969            81
    1200UTC 09.09.2023   36  20.0N  57.7W      973            68
    0000UTC 10.09.2023   48  20.8N  59.2W      970            65
    1200UTC 10.09.2023   60  21.5N  60.8W      965            68
    0000UTC 11.09.2023   72  22.3N  62.2W      961            74
    1200UTC 11.09.2023   84  23.0N  64.0W      958            78
    0000UTC 12.09.2023   96  23.6N  65.6W      952            84
    1200UTC 12.09.2023  108  24.1N  67.3W      950            87
    0000UTC 13.09.2023  120  24.3N  68.5W      944            87
    1200UTC 13.09.2023  132  24.8N  69.5W      949            83
    0000UTC 14.09.2023  144  25.9N  69.9W      944            94
    1200UTC 14.09.2023  156  27.8N  70.3W      947            84
    0000UTC 15.09.2023  168  29.7N  70.1W      944    

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0Z EPS through 240: not as many hits on US as 12Z run but there still were 7: 6 on ME and 1 on NY. There may not be any more US hits after 240. Nova Scotia gets clobbered even more than on the 12Z. Newfoundland also gets some direct hits in addition to leftovers from some of the Nova Scotia hits.

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I hope that recon gets there soon. Eye has filled in and is occluded, but lightening is going insane (have a 80-150 strokes per 10 minutes the past 2 hours!). I think it might be an ERC but the latest microwave pass was too long ago (2.5 hours). I’m basing this on the eye becoming a pinhole just before vanishing plus IR looking like a second maximum cold ring is now appearing about 15-20nm radius. If so this might be the fastest nothing to ERC I’ve ever heard of (normally they take 12-24 hrs).

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14 minutes ago, Random Chaos said:

Indications of a double maxima on recon, but it’s subtle. Probably the start of an ERC and if so likely the cause of the degraded appearance on satellite this morning:

 

IMG_3481.png

I think so, I don't think a little bit of shear would cause the eye to degrade on appearance and the pressure to rise so much in a such a short period of time without an ERC. Not any signs of one on microwave which could be just due to the low resolution/small core, but also could indicate more of a meld/quick ERC. 

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