Tropical Depression 3=Comments,Sat Pics,Models Thread

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Andrew92
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#181 Postby Andrew92 » Mon Jul 31, 2006 9:52 pm

I don't have the advisory, but hot off the press on TWC, Steve Lyons says there is a new depression in the Atlantic.

-Andrew92
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#182 Postby Cyclenall » Mon Jul 31, 2006 9:52 pm

I keep refreshing that NHC page.
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#183 Postby StormScanWx » Mon Jul 31, 2006 9:52 pm

Steve Lyons of TWC said we now have TD3.
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#184 Postby Thunder44 » Mon Jul 31, 2006 9:52 pm

Tropical Depression Three Discussion Number 1

Statement as of 11:00 PM EDT on July 31, 2006



reports from French buoy 41100 late this afternoon indicated that
there was a weak circulation associated with the tropical wave
approaching the Lesser Antilles. A Quikscat pass at 21z confirmed
that the circulation existed but also indicated that the
circulation was very small. Over the past several hours...the
system has been maintaining enough deep convection to be considered
a tropical depression. The initial intensity is set to 30 kt based
on the Quikscat data and the Dvorak classifications from TAFB and
SAB.
The center of the depression is located near the western edge of the
convective mass...due to westerly shear resulting primarily from
strong easterlies in the lower troposphere. The upper environment
ahead of the depression is complicated...and the evolution of a
large upper-low just east of the Bahamas will be important to the
future of the depression. Some guidance...particularly the
UKMET...suggests that this upper low will keep a strong westerly
shearing flow in place in the path of the depression. Other global
models relax this flow...but it may not matter much...as the system
continues to deal with a very dry air mass. The GFDL model
dissipates the system...as do all of the global models. The SHIPS
model shows a very slow development trend...but perhaps this model
cannot appreciate just how fragile a system the depression is right
now. The official forecast follows the global model guidance that
suggests this cyclone may be short lived.
The initial motion is 295/14. The dominant steering is expected to
be provided by the mid- to lower-tropospheric flow. The depression
is therefore expected to continue generally to the west-northwest
to the south of the subtropical ridge...with some reduction in
forward speed due to a weakness in the ridge associated with the
aforementioned upper-low. The official forecast is in good
agreement with the shallow BAM.

Forecast positions and Max winds

initial 01/0300z 16.6n 59.4w 30 kt
12hr VT 01/1200z 17.4n 61.2w 30 kt
24hr VT 02/0000z 18.3n 63.4w 30 kt
36hr VT 02/1200z 19.2n 65.5w 30 kt
48hr VT 03/0000z 20.1n 67.7w 30 kt
72hr VT 04/0000z 21.5n 71.5w 25 kt...dissipating
96hr VT 05/0000z...dissipated

$$
forecaster Franklin
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#185 Postby max » Mon Jul 31, 2006 9:52 pm

HurricaneJim wrote:Well, if there's charters out, I'd be getting on a radio and telling them they got 24hrs to find a hole and tie up.

In any case, it the models are reading it right, it will slide past y'all and into the GoM. Water temp there's got me worried. I'm praying not NOLA or MS again...

Jim


I hope not but time will tell. The waiting game can take forever but it can be fun to see if it does something crazy like a loop or something.

I wonder why no Hurricanes have ever done any crazy loops like Betsy in a while?

When your talking about the charters who are you talking about please?
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#186 Postby ThunderMate » Mon Jul 31, 2006 9:52 pm

Dr. Lyons just said it is official...It is a TD #3
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#187 Postby brunota2003 » Mon Jul 31, 2006 9:53 pm

Well, you got to remember, the advisories are suppose to come out at 11 P.M., we are all just used to them coming out early...they will be out in a few minutes...
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#188 Postby Extremeweatherguy » Mon Jul 31, 2006 9:53 pm

Ola wrote:Maybe there is no TD yet and it was a mistake by NRL lol..... maybe...
no, because the NWS has not even posted their 10:30pm TWO. This would make it 22 minutes late; something they would never do unless waiting to release an advisory.
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#189 Postby WindRunner » Mon Jul 31, 2006 9:53 pm

Just noticed the 10:30pm TWO isn't out yet, a sign that they are running late?
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#190 Postby johngaltfla » Mon Jul 31, 2006 9:53 pm

Pretty sad...3 of us posting it at the same time...geez, do we miss last year (NOT) or what?!?!? :lol:
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#191 Postby Josephine96 » Mon Jul 31, 2006 9:53 pm

I'm starting to wonder that myself Ola :lol:
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#192 Postby cycloneye » Mon Jul 31, 2006 9:53 pm

There haved not been advisories for Fabio,nor TD 8-E at EPAC.
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#193 Postby tomboudreau » Mon Jul 31, 2006 9:53 pm

They were going away from Dr Lyons and he said new depression in Atlantic...more info to come w/ Paul Goodlow and (believe) Jennifer Lopez
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#194 Postby benny » Mon Jul 31, 2006 9:54 pm

wow.. not every day the first advisory calls for it to dissipate from shear/dry air... that one takes guts...
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#195 Postby Brent » Mon Jul 31, 2006 9:54 pm

BULLETIN
TROPICAL DEPRESSION THREE ADVISORY NUMBER 1
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL032006
1100 PM AST MON JUL 31 2006

...TROPICAL DEPRESSION FORMS NEAR THE LEEWARD ISLANDS...

AT 11 PM AST...0300Z...THE GOVERNMENTS OF FRANCE AND THE NETHERLANDS
ANTILLES HAVE ISSUED A TROPICAL STORM WATCH FOR THE ISLANDS OF
SABA...ST. EUSTATIUS...ST. MAARTEN/ST. MARTIN...AND ST. BARTHELEMY.
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...IN THIS CASE WITHIN THE NEXT 12 TO
24 HOURS.

A TROPICAL STORM WARNING WITH LITTLE ADVANCE NOTICE COULD BE
REQUIRED FOR ANTIGUA...BARBUDA...ANGUILLA...ST. KITTS...
NEVIS...AND THE BRITISH VIRGIN ISLANDS EARLY TUESDAY MORNING.

FOR STORM INFORMATION SPECIFIC TO YOUR AREA...INCLUDING POSSIBLE
INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED
BY YOUR LOCAL WEATHER OFFICE.

AT 1100 PM AST...0300Z...THE CENTER OF TROPICAL DEPRESSION THREE WAS
LOCATED NEAR LATITUDE 16.6 NORTH...LONGITUDE 59.4 WEST OR ABOUT 160
MILES...260 KM...EAST-SOUTHEAST OF ANTIGUA.

THE DEPRESSION IS MOVING TOWARD THE WEST-NORTHWEST NEAR 16 MPH...AND
THIS GENERAL HEADING WITH SOME DECREASE IN FORWARD SPEED IS
EXPECTED TO CONTINUE OVER THE NEXT 24 HOURS. ON THE FORECAST
TRACK...THE DEPRESSION IS EXPECTED TO MOVE OVER OR NEAR THE
NORTHERNMOST LEEWARD ISLANDS TOMORROW.

MAXIMUM SUSTAINED WINDS ARE NEAR 35 MPH...55 KM/HR...WITH HIGHER
GUSTS. LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT 24
HOURS.

ESTIMATED MINIMUM CENTRAL PRESSURE IS 1011 MB...29.85 INCHES.

RAINFALL AMOUNTS OF 2 TO 4 INCHES...WITH ISOLATED HIGHER AMOUNTS TO
NEAR 6 INCHES...ARE POSSIBLE OVER THE NORTHERN LEEWARD ISLANDS IN
ASSOCIATION WITH THE DEPRESSION.

REPEATING THE 1100 PM AST POSITION...16.6 N...59.4 W. MOVEMENT
TOWARD...WEST-NORTHWEST NEAR 16 MPH. MAXIMUM SUSTAINED WINDS...35
MPH. MINIMUM CENTRAL PRESSURE...1011 MB.

AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE
CENTER AT 200 AM AST FOLLOWED BY THE NEXT COMPLETE ADVISORY AT 500
AM AST.

$$
FORECASTER FRANKLIN
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#196 Postby WindRunner » Mon Jul 31, 2006 9:54 pm

Got it . . . sorry for the format EDIT: fixed the format, and I see Brent got it the same time it came out FTP . . .

TROPICAL DEPRESSION THREE DISCUSSION NUMBER 1
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL032006
1100 PM EDT MON JUL 31 2006

REPORTS FROM FRENCH BUOY 41100 LATE THIS AFTERNOON INDICATED THAT
THERE WAS A WEAK CIRCULATION ASSOCIATED WITH THE TROPICAL WAVE
APPROACHING THE LESSER ANTILLES. A QUIKSCAT PASS AT 21Z CONFIRMED
THAT THE CIRCULATION EXISTED BUT ALSO INDICATED THAT THE
CIRCULATION WAS VERY SMALL. OVER THE PAST SEVERAL HOURS...THE
SYSTEM HAS BEEN MAINTAINING ENOUGH DEEP CONVECTION TO BE CONSIDERED
A TROPICAL DEPRESSION. THE INITIAL INTENSITY IS SET TO 30 KT BASED
ON THE QUIKSCAT DATA AND THE DVORAK CLASSIFICATIONS FROM TAFB AND
SAB.

THE CENTER OF THE DEPRESSION IS LOCATED NEAR THE WESTERN EDGE OF THE
CONVECTIVE MASS...DUE TO WESTERLY SHEAR RESULTING PRIMARILY FROM
STRONG EASTERLIES IN THE LOWER TROPOSPHERE. THE UPPER ENVIRONMENT
AHEAD OF THE DEPRESSION IS COMPLICATED...AND THE EVOLUTION OF A
LARGE UPPER-LOW JUST EAST OF THE BAHAMAS WILL BE IMPORTANT TO THE
FUTURE OF THE DEPRESSION. SOME GUIDANCE...PARTICULARLY THE
UKMET...SUGGESTS THAT THIS UPPER LOW WILL KEEP A STRONG WESTERLY
SHEARING FLOW IN PLACE IN THE PATH OF THE DEPRESSION. OTHER GLOBAL
MODELS RELAX THIS FLOW...BUT IT MAY NOT MATTER MUCH...AS THE SYSTEM
CONTINUES TO DEAL WITH A VERY DRY AIR MASS. THE GFDL MODEL
DISSIPATES THE SYSTEM...AS DO ALL OF THE GLOBAL MODELS. THE SHIPS
MODEL SHOWS A VERY SLOW DEVELOPMENT TREND...BUT PERHAPS THIS MODEL
CANNOT APPRECIATE JUST HOW FRAGILE A SYSTEM THE DEPRESSION IS RIGHT
NOW. THE OFFICIAL FORECAST FOLLOWS THE GLOBAL MODEL GUIDANCE THAT
SUGGESTS THIS CYCLONE MAY BE SHORT LIVED.

THE INITIAL MOTION IS 295/14. THE DOMINANT STEERING IS EXPECTED TO
BE PROVIDED BY THE MID- TO LOWER-TROPOSPHERIC FLOW. THE DEPRESSION
IS THEREFORE EXPECTED TO CONTINUE GENERALLY TO THE WEST-NORTHWEST
TO THE SOUTH OF THE SUBTROPICAL RIDGE...WITH SOME REDUCTION IN
FORWARD SPEED DUE TO A WEAKNESS IN THE RIDGE ASSOCIATED WITH THE
AFOREMENTIONED UPPER-LOW. THE OFFICIAL FORECAST IS IN GOOD
AGREEMENT WITH THE SHALLOW BAM.


FORECAST POSITIONS AND MAX WINDS

INITIAL 01/0300Z 16.6N 59.4W 30 KT
12HR VT 01/1200Z 17.4N 61.2W 30 KT
24HR VT 02/0000Z 18.3N 63.4W 30 KT
36HR VT 02/1200Z 19.2N 65.5W 30 KT
48HR VT 03/0000Z 20.1N 67.7W 30 KT
72HR VT 04/0000Z 21.5N 71.5W 25 KT...DISSIPATING
96HR VT 05/0000Z...DISSIPATED

$$
FORECASTER FRANKLIN
Last edited by WindRunner on Mon Jul 31, 2006 9:56 pm, edited 2 times in total.
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#197 Postby NDG » Mon Jul 31, 2006 9:54 pm

Josephine96 wrote:Still waiting for advisory #1


They are probably working on the last minute details.
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#198 Postby Brent » Mon Jul 31, 2006 9:54 pm

ROPICAL DEPRESSION THREE FORECAST/ADVISORY NUMBER 1
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL032006
0300 UTC TUE AUG 01 2006

AT 11 PM AST...0300Z...THE GOVERNMENTS OF FRANCE AND THE NETHERLANDS
ANTILLES HAVE ISSUED A TROPICAL STORM WATCH FOR THE ISLANDS OF
SABA...ST. EUSTATIUS...ST. MAARTEN/ST. MARTIN AND ST. BARTHELEMY. A
TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...IN THIS CASE WITHIN THE NEXT 12 TO
24 HOURS.

A TROPICAL STORM WARNING WITH LITTLE ADVANCE NOTICE COULD BE
REQUIRED FOR ANTIGUA...BARBUDA...ANGUILLA...ST. KITTS...
NEVIS...AND THE BRITISH VIRGIN ISLANDS EARLY TUESDAY MORNING.

TROPICAL DEPRESSION CENTER LOCATED NEAR 16.6N 59.4W AT 01/0300Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 295 DEGREES AT 14 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1011 MB
MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 16.6N 59.4W AT 01/0300Z
AT 01/0000Z CENTER WAS LOCATED NEAR 16.4N 58.9W

FORECAST VALID 01/1200Z 17.4N 61.2W
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 02/0000Z 18.3N 63.4W
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 02/1200Z 19.2N 65.5W
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 03/0000Z 20.1N 67.7W
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 04/0000Z 21.5N 71.5W...DISSIPATING
MAX WIND 25 KT...GUSTS 35 KT.

EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM
ON DAY 4 AND 325 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY

OUTLOOK VALID 05/0000Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.6N 59.4W

NEXT ADVISORY AT 01/0900Z

$$
FORECASTER FRANKLIN
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Josephine96

#199 Postby Josephine96 » Mon Jul 31, 2006 9:54 pm

The NHC is probably rewriting it's 1030 TWO.. "The NHC is now issuing advisories on Tropical Depression #3"... :lol:
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#200 Postby CrazyC83 » Mon Jul 31, 2006 9:55 pm

The forecast doesn't even bring it up to a tropical storm...although I do think it will reach such (barely).
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