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Hurricane Beryl | 935mb165mph peak| postropical


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Posted (edited)

BULLETIN

Hurricane Beryl Intermediate Advisory Number 11A

NWS National Hurricane Center Miami FL AL022024

800 AM AST Mon Jul 01 2024

...HURRICANE HUNTER AIRCRAFT DATA INDICATE BERYL HAS STRENGTHENED TO AN EXTREMELY DANGEROUS CATEGORY 4 HURRICANE... ...LIFE-THREATENING WINDS AND STORM SURGE EXPECTED TO BEGIN IN THE WINDWARD ISLANDS THIS MORNING...

SUMMARY OF 800 AM AST...1200 UTC...

INFORMATION ------------------------

LOCATION...12.0N 60.5W ABOUT 70 MI...125 KM E OF GRENADA ABOUT 90 MI...165 KM SSE OF ST. VINCENT

MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H

PRESENT MOVEMENT...WNW OR 285 DEGREES AT 20 MPH...31 KM/H

MINIMUM CENTRAL PRESSURE...959 MB... 28.32 INCHES

IMG_3967.jpeg

Edited by Burr
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Posted (edited)

There are actually two hunter aircraft in the storm this morning… posted the Air Force graphs above. The NOAA mission just made its latest pass, showing what looks to me to be a continued strengthening again.  Sea level pressure around 952mb and surface winds around 150mph.

 

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Edited by Burr
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6 minutes ago, StretchCT said:

Peak recon HDOBs this morning, so far

 

image.png.c41559ae213955ca84ca7d0696559241.png

Peak Vort messages

image.png.7b79b066825aac3dcceda2da7ff7ef6f.png

Peak dropsondes

image.png.43288fc512d5bf2ef763a45e1f3be9c7.png

That second NOAA pass really found a stronger portion of the storm / eyewall.

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Mission 6 last pass had pressure of 956. Closed eye, 18nm wide. SFc winds 133mph inbound, 131mph outbound.  Max winds were only 8 and 9 nm from the center fix, so really tight which hopefully can spare some devastation. 

Spoiler

 

Mission Number: 6
Observation Number: 13

A. Time of Center Fix: 1st day of the month at 13:18:10Z
B. Center Fix Coordinates: 12.17N 60.92W
B. Center Fix Location: 57 statute miles (91 km) to the E (82°) from Saint George, Grenada.
C. Minimum Height at Standard Level: 2,714m (8,904ft) at 700mb
D. Minimum Sea Level Pressure: 956mb (28.23 inHg)
E. Dropsonde Surface Wind at Center (Undecoded): NA
F. Eye Character: Closed
G. Eye Shape & Diameter: Circular with a diameter of 18 nautical miles (21 statute miles)
H. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 116kts (133.5mph)
I. Location & Time of the Estimated Maximum Surface Wind Inbound: 9 nautical miles to the NNW (329°) of center fix at 13:15:00Z
J. Maximum Flight Level Wind Inbound: From 55° at 117kts (From the NE at 134.6mph)
K. Location & Time of the Maximum Flight Level Wind Inbound: 12 nautical miles (14 statute miles) to the NW (325°) of center fix at 13:14:00Z
L. Estimated (by SFMR or visually) Maximum Surface Wind Outbound: 114kts (131.2mph)
M. Location & Time of the Estimated Maximum Surface Wind Outbound: 8 nautical miles to the SE (135°) of center fix at 13:20:30Z
N. Maximum Flight Level Wind Outbound: From 228° at 105kts (From the SW at 120.8mph)
O. Location & Time of the Maximum Flight Level Wind Outbound: 8 nautical miles to the SE (135°) of center fix at 13:20:30Z
P. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 11°C (52°F) at a pressure alt. of 3,050m (10,007ft)
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): 9°C (48°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 Levels (surface & flight level centers within 5nm of each other): Surface and 700mb
T. Navigational Fix Accuracy: 0.02 nautical miles
T. Meteorological Accuracy: 0.5 nautical miles

Remarks Section - Remarks That Were Decoded...
 

Maximum Flight Level Wind: 126kts (~ 145.0mph) which was observed 14 nautical miles (16 statute miles) to the NE (47°) from the flight level center at 11:26:00Z

 

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Quite a few boats stayed in Grenada, but in pretty well sheltered areas. Winds with the storm passing to the north should be NE, N, NW then maybe some strong from the SW.  Most of these spots look pretty good. 

image.thumb.png.bc403bcdec4a3df59404e0c05963a998.png

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2 minutes ago, StretchCT said:

Quite a few boats stayed in Grenada, but in pretty well sheltered areas. Winds with the storm passing to the north should be NE, N, NW then maybe some strong from the SW.  Most of these spots look pretty good. 

image.thumb.png.bc403bcdec4a3df59404e0c05963a998.png

So basically if they were in Grenville or Mount Carmel, the boats would be open to possibly a lot of damage?

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Hurricane Beryl Tropical Cyclone Update
NWS National Hurricane Center Miami FL       AL022024
1000 AM AST Mon Jul 1 2024

...EYEWALL OF EXTREMELY DANGEROUS CATEGORY 4 BERYL NEARING THE 
SOUTHERN WINDWARD ISLANDS...
...1000 AM AST POSITION UPDATE...

Beryl is nearing the southern Windward Islands and expected to make 
landfall within the next hour or two. This is an extremely dangerous 
and life-threatening situation. Take action now to protect your 
life! Residents in the Grenadine Islands and Carriacou Island should 
not leave their shelter as winds will rapidly increase within the 
eyewall of Beryl. Remain in place through the passage of these 
life-threatening conditions and do not venture out in the eye of the 
storm.

A weather station located in Barbados at Grantley Adams 
International Airport recently reported a sustained wind of 52 mph 
(83 km/h) and a gust of 69 mph (111 km/h).


SUMMARY OF 1000 AM AST...1400 UTC...INFORMATION
-----------------------------------------------
LOCATION...12.2N 61.0W
ABOUT 50 MI...75 KM E OF GRENADA
ABOUT 25 MI...40 SE ESE OF CARRIACOU ISLAND
MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 20 MPH...31 KM/H
MINIMUM CENTRAL PRESSURE...956 MB...28.23 INCHES
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1 minute ago, clm said:

So basically if they were in Grenville or Mount Carmel, the boats would be open to possibly a lot of damage?

Yes, I'm also not sure about St Georges, seems a little too exposed once it passes.  My friend says its sheltered enough. 

N to S, Grenada is 15NM.  The eye is listed as 18NM.  Looks like the southern eye wall might nick the northern part of Grenada.  The islands north are toast. 

image.thumb.gif.7bd824712a6dddd6dfc1f597a806bf6f.gif

 

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Posted (edited)

For those like me trying to put names to those islands…

… Petite Martinique is the tiny island directly south of Petite St Vincent on the maps below.

 

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Edited by Burr
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NOAA mission is heading back to base.  Air Force mission is inbound…

 

IMG_3974.jpeg

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Posted (edited)

The ‘larger’ island in line for landfall is Carriacou, for reference in the maps above, with Union Island and the ‘Petites’ Martinique and St Vincent also in the path of the northern eyewall.

 

 

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Edited by Burr
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19 minutes ago, StretchCT said:

2 stations on weatherlink, which you have to sign up for.

Screenshot2024-07-01at10_27_42AM.thumb.png.e10d9f93bb1b17c83cc126f20841ba57.png

Erika is in for a memorable storm.  Batten down!

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Posted (edited)
SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...12.4N 61.3W
ABOUT 35 MI...55 KM NE OF GRENADA
ABOUT 15 MI...25 KM ESE OF CARRIACOU ISLAND
MAXIMUM SUSTAINED WINDS...140 MPH ...220 KM/H
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 20 MPH...31 KM/H
MINIMUM CENTRAL PRESSURE...956 MB ... 28.23 INCHES

 

Edited by Burr
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