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Category Five Hurricane Lee


WxWatcher007
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7 minutes ago, SnoSki14 said:

We'll see if the Euro was onto something. 

None of the other models have the 12z euro set up per se.

12z euro was 24hrs slower Then the current 12z’s and had a deep Midwest trough that pulled this NW significantly more . Other models are still 200 miles East of 12z euro and don’t have that trough digging nearly as close But changes can still be made 

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All I’ll say for those seeking hurricane conditions in NE with these westward shifts is forget about it. Coming further west seems to only happen if the storm avoids capture and slows down allowing HP to build back in somewhat. A storm slowing down over the frigid waters off Massachusetts/Maine will weaken to a Nor Easter gale by the time it makes it to the coast 

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2 hours ago, qg_omega said:

 So, the typically overly dramatic JB is predicting Lee still hasn't peaked and that it later falls to 920 mb! I feel this is highly unlikely considering history and its progged too slow speed, which will likely lead to too much SST cooling in advance of the center. Getting pressure that low in this part of the Atlantic is rare enough before even considering potential SST cooling from too slow movement. Plus, the wake from Franklin will be a factor once west of Bermuda.

 

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Product: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 10th day of the month at 17:48Z
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: 12
Observation Number: 03 ( See all messages of this type for this mission. )

A. Time of Center Fix: 10th day of the month at 17:29:30Z
B. Center Fix Coordinates: 21.95N 61.35W
B. Center Fix Location: 392 statute miles (631 km) to the NE (51°) from San Juan, Puerto Rico (U.S.).
C. Minimum Height at Standard Level: 2,728m (8,950ft) at 700mb
D. Minimum Sea Level Pressure: 956mb (28.23 inHg)
E. Dropsonde Surface Wind at Center: From 310° at 4kts (From the NW at 5mph)
F. Eye Character: Closed
G. Eye Shape & Diameter: Circular with a diameter of 30 nautical miles (35 statute miles)
H. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 94kts (108.2mph)
I. Location & Time of the Estimated Maximum Surface Wind Inbound: 15 nautical miles (17 statute miles) to the SW (226°) of center fix at 17:25:00Z
J. Maximum Flight Level Wind Inbound: From 312° at 80kts (From the NW at 92.1mph)
K. Location & Time of the Maximum Flight Level Wind Inbound: 24 nautical miles (28 statute miles) to the SW (226°) of center fix at 17:22:30Z
L. Estimated (by SFMR or visually) Maximum Surface Wind Outbound: 99kts (113.9mph)
M. Location & Time of the Estimated Maximum Surface Wind Outbound: 18 nautical miles (21 statute miles) to the NE (47°) of center fix at 17:34:30Z
N. Maximum Flight Level Wind Outbound: From 143° at 112kts (From the SE at 128.9mph)
O. Location & Time of the Maximum Flight Level Wind Outbound: 19 nautical miles (22 statute miles) to the NE (47°) of center fix at 17:35:00Z
P. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 12°C (54°F) at a pressure alt. of 3,049m (10,003ft)
Q. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 18°C (64°F) at a pressure alt. of 3,047m (9,997ft)
R. Dewpoint Temp (collected at same location as temp inside eye): 12°C (54°F)
R. Sea Surface Temp (collected at same location as temp inside eye): Not Available
S. Fix Determined By: Penetration, Radar, Wind and Pressure
S. Fix Levels (surface & flight level centers within 5nm of each other): Surface and 700mb
T. Navigational Fix Accuracy: 0.02 nautical miles
T. Meteorological Accuracy: 2 nautical miles

Remarks Section:
 

Maximum Flight Level Wind: 112kts (~ 128.9mph) which was observed 19 nautical miles (22 statute miles) to the NE (47°) from the flight level center at 17:35:00Z
Maximum Flight Level Temp: 17°C (63°F) which was observed 7 nautical miles to the SW (227°) from the flight level center
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Looking at the ensembles and available models after church, I would still bet money that it is far enough E of New England for no more breezes on land (like what I felt in Lafayette, LA during Georges 1998 or 2000, mostly clear skies, but noticeable breezy) but I wouldn't bet big sums.  Maybe 30% chance of sensible weather beyond just fresh breezes in New England, and 15% of a landfall.  If I weenie after growing up in Massapequa, I go about 5% on Long Island landfall.

 

Hot towers and a warm spot eye on IR, not yet detectable (but should be soon) on visible and the VDM, I think a slow intensification is happening.  Maybe gets to Cat 4.  Coupled air/ocean HAFS=A models support call for weakening due to Franklin or its own cool wake after getting back to Cat 4.  That model (Andy Hazelton must have worked on it, he is proud of it) has been decent so far..

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The 12Z UK sped up considerably and is just off C NS at 168 hours at 970 mb. Its SLP peak of 944 mb isn't til 8PM EDT on Thu (9/14). Based on the often conservative UKMET still getting the SLP to fall back to 944 mb, I feel that a second peak as low as ~935 mb is a reasonable possibility, but I still feel JB's 920 mb is very likely too low due to progged too slow movement likely leading to too much cooling ahead of the center to support pressures that low. We'll see:

HURRICANE LEE        ANALYSED POSITION : 21.6N  60.8W

     ATCF IDENTIFIER : AL132023

                        LEAD                 CENTRAL     MAXIMUM WIND
      VERIFYING TIME    TIME   POSITION   PRESSURE (MB)  SPEED (KNOTS)
      --------------    ----   --------   -------------  -------------
    1200UTC 10.09.2023    0  21.6N  60.8W      954            79
    0000UTC 11.09.2023   12  22.2N  61.9W      961            74
    1200UTC 11.09.2023   24  23.1N  63.5W      964            74
    0000UTC 12.09.2023   36  23.6N  64.9W      957            76
    1200UTC 12.09.2023   48  23.9N  66.3W      952            75
    0000UTC 13.09.2023   60  24.5N  67.2W      951            75
    1200UTC 13.09.2023   72  25.3N  67.9W      952            71
    0000UTC 14.09.2023   84  26.4N  68.2W      949            78
    1200UTC 14.09.2023   96  28.0N  68.4W      949            77
    0000UTC 15.09.2023  108  29.8N  68.3W      944            76
    1200UTC 15.09.2023  120  32.0N  67.9W      948            77
    0000UTC 16.09.2023  132  35.0N  66.8W      950            72
    1200UTC 16.09.2023  144  38.5N  66.1W      956            73
    0000UTC 17.09.2023  156  41.4N  65.6W      959            53
    1200UTC 17.09.2023  168  44.1N  63.8W      970             47

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2 hours ago, STILL N OF PIKE said:

Ya looks approximately 10 or so hits 

After a drop on the 0Z/6Z runs, the 12Z GEFS clearly has the most US landfalls of any GEFS run yet, which had been 8 (18Z of yesterday). There are so many close together in ME that it is hard to count them! I'm estimating 13 US hits (42%) with ~8 in ME, 4 in MA, and 1 in NJ. I'd say a minimum of 12 (39%)(7 ME). I try not to double count. So, a MA landfall followed by ME counts as only a MA landfall for me.

Edit: it may be as many as 14 hits because ME may have as many as 9!
 

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38 minutes ago, GaWx said:

How accurate are those two tropical models for track vs the main global models?

Good question.  I do assume using the GFS to set the conditions near the edges of the nest is related to ending the high res hurricane models early.  Not the same model obviously, seeing the HAFS models have ocean-atmosphere coupling the NAM's clearly don't need, but they have to becoming very dependent on the GFS boundary conditions calculated at a lower res.  With the HAFs being W of the others when they end, I would want to know how they perform at the end of their runs.

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