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Major Hurricane Gonzalo


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A lot of dry air lurking, but shouldn't be much of a problem in the short term.  There's currently no mechanism, such as shear, to push the dry air into the circulation.  

 

Correct... so in theory as long as the storm can mix out the dry air that is currently in its circulation, it should be able to take advantage of the warming sea surface temperatures and organize steadily (if not rapidly). Brian McNoldy is putting together a nice long radar animation from Martinique which should be fun to watch as the system organizes. If a small inner core develops in the next 12-24 hours, things could unfortunately get very dicey for Puerto Rico. 

 

Gonzalo_13Oct14_Martinique.gif

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Would be interesting to see the actual radar images...

"The combination of the small size of Gonzalo, its precursor eye feature, low vertical wind shear conditions, SSTs at least 29C, and colder than normal upper-tropospheric temperatures support at least a normal rate of intensification throughout the forecast period. Although occasional intrusions of dry mid-level air could briefly disrupt the strengthening process, those occurrences should generally be short-lived due to the strong instability conditions that will be present. In fact, rapid intensification is a very distinct possibility, especially if the aforementioned eye feature continues to develop. The NHC intensity forecast is higher then the consensus models and follows the a blend of the SHIPS and LGEM models."

be2be399c32d6d43d73acf1563d737b5.jpg

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Josh might have chased this one if he wasn't so busy on the other side of the world chasing Super Typhoons. Looks like the Virgin Islands and northeastern Puerto Rico are going to get whacked pretty good this time.

Doubtful.

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I wish Brian had a Bermuda loop, that was quite the blow.

 

 Between the projected track of Gonzalo and the actual track of Fay, Bermuda could end up with two direct hits of significant TC's (Fay was near/at cat 1 'cane strength) within only ~6 days of each other. This kind of thing has occurred only twice since 1851: 1953 (9/11 strong TS, 9/17 cat 3 'cane) and 1899 (9/4 cat 1 'cane, 9/12 cat 3 'cane). Fwiw, 1953 and 1899 were both during El Nino and both had a borderline strong TS to cat. 1 'cane followed by a cat 3 'cane. This combo has a chance to repeat this time if there were to be a direct hit from Gonzalo.

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 Between the projected track of Gonzalo and the actual track of Fay, Bermuda could end up with two direct hits of significant TC's (Fay was near/at cat 1 'cane strength) within only ~6 days of each other. This kind of thing has occurred only twice since 1851: 1953 (9/11 strong TS, 9/17 cat 3 'cane) and 1899 (9/4 cat 1 'cane, 9/12 cat 3 'cane). Fwiw, 1953 and 1899 were both during El Nino and both had a borderline strong TS to cat. 1 'cane followed by a cat 3 'cane. This combo has a chance to repeat this time if there were to be a direct hit from Gonzalo.

 

Could just be a great year (because of pattern persistence) for Bermuda.  I was noting to self that in a year of meridianal flow bias it would be a bigger challenge getting TC's even to 60W with all these trough incursions; they would be favored to curve out earlier, which might enhance Bermuda's risk endemic to this season. 

 

Interesting... speculation though. 

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Latest VDM with 73 knot winds and a consistently falling surface pressure. 

 

Huge tower in the western eyewall 

 

GOES20252014286F0u23b.jpg

 

 

 

Storm Name: Gonzalo (flight in the North Atlantic basin)
Mission Number: 3
Observation Number: 13
A. Time of Center Fix: 13th day of the month at 20:09:00Z
B. Center Fix Coordinates: 17°52'N 62°38'W (17.8667N 62.6333W)
C. Minimum Height at Standard Level: 2,971m (9,747ft) at 700mb
D. Estimated (by SFMR or visually) Maximum Surface Wind: 73kts (~ 84.0mph)
E. Location of the Estimated Maximum Surface Wind: 8 nautical miles (9 statute miles) to the NNE (13°) of center fix
F. Maximum Flight Level Wind Inbound: From 129° at 77kts (From the SE at ~ 88.6mph)
G. Location of Maximum Flight Level Wind Inbound: 18 nautical miles (21 statute miles) to the NNE (27°) of center fix
H. Minimum Sea Level Pressure: 985mb (29.09 inHg)
I. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 8°C (46°F) at a pressure alt. of 3,071m (10,075ft)
J. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 16°C (61°F) at a pressure alt. of 3,054m (10,020ft)
K. Dewpoint Temp & Sea Surface Temp (collected at same location as temp inside eye): Not Available
L. Eye Character: Open from the southeast to the south
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: 2 nautical miles
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000

WTNT33 KNHC 132037

TCPAT3

BULLETIN

HURRICANE GONZALO ADVISORY NUMBER 6

NWS NATIONAL HURRICANE CENTER MIAMI FL AL082014

500 PM AST MON OCT 13 2014

...GONZALO BECOMES A HURRICANE WHILE MOVING THROUGH THE

NORTHERN LEEWARD ISLANDS...

...ADDITIONAL STRENGTHENING LIKELY...

SUMMARY OF 500 PM AST...2100 UTC...INFORMATION

----------------------------------------------

LOCATION...17.9N 62.9W

ABOUT 20 MI...30 KM SE OF ST. MARTIN

ABOUT 140 MI...230 KM ESE OF ST. THOMAS

MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H

PRESENT MOVEMENT...NW OR 305 DEGREES AT 12 MPH...19 KM/H

MINIMUM CENTRAL PRESSURE...984 MB...29.06 INCHES

 

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Meteofrance report in Saint Barthelemy of a 204km/h gust (127 mph)

 

http://www.meteofrance.gp/integration/sim-portail/generated/integration/img/produits/pdf/suivi/bulletin_suivi_iles_nord.pdf

 

http://www.meteofrance.gp/observations-meteo-antilles-guyane/iles-du-nord/977-978

 

 

 

Données observées :
à Saint Barthélémy :
A 12 et 13 heures , le vent était orienté à l'est avec des rafales de 115 km/h.
A 14 heures les rafales atteignaient 122 km/h.
Entre 16 et 17 heures, 204 km/h
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