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Hurricane Arthur


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Extrapolation based on reconnaissance and radar data suggests a LF is likely near Beaufort, NC. I'm guessing 80 kt for the peak and landfall intensities. That would mean the NC coast will probably see low-end hurricane winds, which would be a bust on my end, but I may yet get the intensity right. (I've been saying 75-80 kt tops for some time now.)

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Ah ok..they found nothing of note in that blow up?

Either way, can't argue with what you're saying about the limited time here for Arthur.

The SFMR was slightly up to 82 KT, and the extrapolated pressure ever so slightly down, but basically the only improvement seen is with respect to it mixing out some of the dry air
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However..

 

Level Wind Direction Wind Speed
987mb (Surface) 95° (from the E) 89 knots (102 mph)
986mb 95° (from the E) 88 knots (101 mph)
984mb 100° (from the E) 79 knots (91 mph)
979mb 110° (from the ESE) 74 knots (85 mph)
973mb 105° (from the ESE) 90 knots (104 mph)
970mb 105° (from the ESE) 94 knots (108 mph)
959mb 115° (from the ESE) 92 knots (106 mph)
951mb 120° (from the ESE) 97 knots (112 mph)
926mb 125° (from the SE) 88 knots (101 mph)
917mb 130° (from the SE) 89 knots (102 mph)
909mb 130° (from the SE) 96 knots (110 mph)
899mb 135° (from the SE) 92 knots (106 mph)
863mb 140° (from the SE) 91 knots (105 mph)
855mb 140° (from the SE) 84 knots (97 mph)
850mb 140° (from the SE) 86 knots (99 mph)
801mb 155° (from the SSE) 80 knots (92 mph)
775mb 150° (from the SSE) 66 knots (76 mph)
696mb 145° (from the SE) 67 knots (77 mph)

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Significant dry slot is still evident.

 

gYhYgcV.jpg

I say it makes it to 100 mph or so-I don't see a real chance at it getting higher than that. The dry air is just too tenacious and interrupting the core, and it's very close to land. These hurricanes that parallel the east coast always seem to have this problem with entrainment of dry air from land.

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Extrapolation based on reconnaissance and radar data suggests a LF is likely near Beaufort, NC. I'm guessing 80 kt for the peak and landfall intensities. That would mean the NC coast will probably see low-end hurricane winds, which would be a bust on my end, but I may yet get the intensity right. (I've been saying 75-80 kt tops for some time now.)

I should also note that Carteret County is the hurricane capital of NC with the shortest return rate between 'cane impacts.

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FWIW the SPC did give the TOR watch 60/40 probs... Even mentioning the possibility of a couple intense tornadoes...

 

This doesn't surprise me given the storm is moving into a rather strongly unstable environment across the Eastern Seaboard that could support more robust cells than normal.

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Product: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 3rd day of the month at 19:08Z
Aircraft: Air Force Aircraft (Last 3 digits of the tail number are 301)
Storm Number & Year: 01L in 2014
Storm Name: Arthur (flight in the North Atlantic basin)
Mission Number: 11 seeall.png
Observation Number: 19
A. Time of Center Fix: 3rd day of the month at 18:41:40Z
B. Center Fix Coordinates: 33°02'N 78°12'W (33.0333N 78.2W) viewmap.png
B. Center Fix Location: 61 miles (98 km) to the SE (140°) from Myrtle Beach, SC, USA.
C. Minimum Height at Standard Level: 2,902m (9,521ft) at 700mb
D. Estimated (by SFMR or visually) Maximum Surface Wind: 82kts (~ 94.4mph)
E. Location of the Estimated Maximum Surface Wind: 14 nautical miles (16 statute miles) to the ENE (71°) of center fix
F. Maximum Flight Level Wind Inbound: From 141° at 82kts (From the SE at ~ 94.4mph)
G. Location of Maximum Flight Level Wind Inbound: 19 nautical miles (22 statute miles) to the ENE (66°) of center fix
H. Minimum Sea Level Pressure: 977mb (28.85 inHg) - Extrapolated
I. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 10°C (50°F) at a pressure alt. of 3,049m (10,003ft)
J. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 13°C (55°F) at a pressure alt. of 3,052m (10,013ft)
K. Dewpoint Temp & Sea Surface Temp (collected at same location as temp inside eye): Not Available
L. Eye Character: Closed
M. Eye Shape & Diameter: Circular with a diameter of 30 nautical miles (35 statute miles)
N. Fix Determined By: Penetration, Radar, Wind, Pressure and Temperature
N. Fix Levels (sfc and flt lvl centers are within 5nm of each other): Surface and 700mb
O. Navigational Fix Accuracy: 0.02 nautical miles
O. Meteorological Accuracy: 1 nautical mile
Remarks Section:
Maximum Flight Level Wind: 84kts (~ 96.7mph) which was observed 34 nautical miles (39 statute miles) to the S (174°) from the flight level center at 17:06:00Z
Sea Level Pressure Extrapolation From: 700mb
 

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Something happened to this mission planned to begin at 5:30pm?

FLIGHT FOUR -- TEAL 71A. 04/0000,0300,0600ZB. AFXXX 1401A ARTHURC. 03/2130ZD. 33.5N 76.8WE. 03/2345Z TO 04/0600ZF. SFC TO 10,000 FT

 

Ooops... I was reading everything a day off. Looks like 3 hour fixes continue! My bad.

 

However..

 

Level Wind Direction Wind Speed

987mb (Surface) 95° (from the E) 89 knots (102 mph)

986mb 95° (from the E) 88 knots (101 mph)

984mb 100° (from the E) 79 knots (91 mph)

979mb 110° (from the ESE) 74 knots (85 mph)

973mb 105° (from the ESE) 90 knots (104 mph)

970mb 105° (from the ESE) 94 knots (108 mph)

959mb 115° (from the ESE) 92 knots (106 mph)

951mb 120° (from the ESE) 97 knots (112 mph)

926mb 125° (from the SE) 88 knots (101 mph)

917mb 130° (from the SE) 89 knots (102 mph)

909mb 130° (from the SE) 96 knots (110 mph)

899mb 135° (from the SE) 92 knots (106 mph)

863mb 140° (from the SE) 91 knots (105 mph)

855mb 140° (from the SE) 84 knots (97 mph)

850mb 140° (from the SE) 86 knots (99 mph)

801mb 155° (from the SSE) 80 knots (92 mph)

775mb 150° (from the SSE) 66 knots (76 mph)

696mb 145° (from the SE) 67 knots (77 mph)

 

Well instantaneous surface wind says we have surface winds of at least 85 knots now.

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