Ana and TD 3 take aim at the Lesser Antilles

By: Dr. Jeff Masters , 4:17 PM GMT on August 15, 2009

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Tropical Storm Ana was born this morning, when the remnants of Tropical Depression Two made a comeback and organized into the first tropical storm of the 2009 Atlantic hurricane season. Ana is the latest first named storm of the season since Hurricane Andrew got its name on August 17, 1992. The two storms have some similarities, as Andrew formed in the same part of the ocean, and also struggled in its early days with high wind shear and dry air. Let's hope the similarities end there.

Ana is struggling this afternoon. After an modest burst of heavy thunderstorm activity prompted NHC to upgrade Ana to a tropical storm early this morning, Ana has run into strong upper-level winds from the west that are creating high wind shear. This shear was not forecast, and it is not clear how long it will last. The shear has acted to drive dry air into the core of Ana, destroying almost all of Ana's heavy thunderstorms. The low-level center of the storm is now exposed to view, something that often foreshadows the death of a storm. It is possible the shear will destroy Ana, and several models (the GFS and ECMWF) forecast this may be the case. However, the shear forecast calls for shear to drop into the low range, 5 - 10 knots, tonight through Tuesday. If the shear does drop as forecast, Ana should be able to moisten the atmosphere around it sufficiently to protest itself from the dry Saharan air that surrounds it (Figure 1). SSTs are 27°C today, and will increase to 28°C by Sunday. By the time Ana moves into the Bahamas, total ocean heat content rises steeply (Figure 2), and rapid intensification of Ana is possible, if the shear and dry air haven't disrupted the storm. The intensity forecast models, for the most part, predict a steady intensification of Ana to the threshold of hurricane strength five days from now. The HWRF model is on the strong side, predicting a Category 2 hurricane. The GFDL predicts a weak tropical storm five days from now, but that is because the model has Ana passing over the rugged terrain of Hispaniola, something the other models do not predict. In summary, the intensity forecast for Ana has higher than usual uncertainty, and I give equal chances that the storm will be a hurricane--or non-existent--four days from now.


Figure 1. Water vapor image from this morning showing the large area of dry, Saharan air surrounding Ana, and lying to the north of Tropical Depression Three. Image credit: NOAA/SSD

Tropical Depression Three forms, could be Bill later today
QuikSCAT data from this morning and satellite loops revealed that the tropical wave (90L) in the middle Atlantic has finally developed a well developed surface circulation and can be classified as Tropical Depression Three. Recent satellite imagery suggests that TD 3 may already be Tropical Storm Bill. Water vapor imagery (Figure 1) shows that TD 3's center consolidated a few hundred miles south of the dry air of the Saharan Air Layer (SAL). Thus, the storm should not be affected by dry air and dust as much as Ana has been. Ana may also act to moisten the atmosphere in front of TD 3, helping protect the storm from the SAL as it edges farther north over the the three days.



Figure 2. Heat content of the ocean, in kJ per square cm. Oceanic heat content steadily increases for Ana and TD 3 as they approach the Lesser Antilles Islands. Oceanic heat content levels of 90 kJ per square cm are frequently associated with rapid intensification of hurricanes. Image credit: University of Miami.

Wind shear is moderate, 15 knots, but is forecast to fall to 10 - 15 knots on days 2 - 5. Sea Surface Temperatures are about 27.5°C, and will remain in the 27.5 - 28°C range the next five days. The combination of low wind shear and sufficiently warm SSTs should allow TD 3 to intensify steadily, and I expect the storm will be at hurricane strength by Wednesday, when it will be near the northern Lesser Antilles Islands. Most of our reliable intensity models strengthen TD 3 into a hurricane by Wednesday. Oceanic heat content (Figure 2) increases sharply just before the islands, so TD 3 could be intensifying rapidly as it moves through or just north of the Lesser Antilles on Thursday. TD 3 consolidated farther south than expected, so the track models calling for a more northerly path were probably incorrect. In particular, the ECMWF model, which had TD 3 turning sharply northwestward and missing the Lesser Antilles Islands, was probably much too far to the north in this morning's 00Z run. TD 3 will probably pass very close to the northern Lesser Antilles islands on Wednesday and Thursday.

I'll have an update Sunday.

Jeff Masters

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Quoting CaneWarning:


:)


LOL did not even give me chance to correct it

please unquote that....I accidentally used foul language.
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Observation #7

Product: NOAA Temp Drop (Dropsonde) Message (UZNT13 KWBC)
Transmitted: 15th day of the month at 23:28Z
Aircraft: Gulfstream IV-SP (G-IV) (Reg. Num. N49RF)
Storm Number: 02
Storm Name: Ana (originating in the North Atlantic basin)
Mission: Non-Tasked Mission
Observation Number: 08

Part A...

Date: Near the closest hour of 23Z on the 15th day of the month
Highest Mandatory Level For Which Wind Was Reported: 150mb
Coordinates: 17.0N 48.2W (View map)
Location: 808 miles (1301 km) to the ENE (70°) from Bridgetown, Barbados.
Marsden Square: 041 (About)

Level Geo. Height Air Temp. Dew Point Wind Direction Wind Speed
1014mb (29.94 inHg) Sea Level (Surface) 26.0°C (78.8°F) 23.8°C (74.8°F) 95° (from the E) 20 knots (23 mph)
1000mb 119m (390 ft) 25.0°C (77.0°F) 23.3°C (73.9°F) 90° (from the E) 22 knots (25 mph)
925mb 801m (2,628 ft) 20.8°C (69.4°F) 20.6°C (69.1°F) Unavailable (perhaps not representative)
850mb 1,531m (5,023 ft) 17.6°C (63.7°F) 16.1°C (61.0°F) Unavailable (perhaps not representative)
700mb 3,179m (10,430 ft) 10.2°C (50.4°F) Approximately 0°C (32°F) 115° (from the ESE) 45 knots (52 mph)
500mb 5,890m (19,324 ft) -6.1°C (21.0°F) Approximately -12°C (10°F) 80° (from the E) 23 knots (26 mph)
400mb 7,610m (24,967 ft) -15.7°C (3.7°F) Approximately -30°C (-22°F) 100° (from the E) 16 knots (18 mph)
300mb 9,710m (31,857 ft) -30.9°C (-23.6°F) -33.4°C (-28.1°F) Unavailable (perhaps not representative)
250mb 10,980m (36,024 ft) -40.7°C (-41.3°F) -45.4°C (-49.7°F) 120° (from the ESE) 16 knots (18 mph)
200mb 12,460m (40,879 ft) -53.7°C (-64.7°F) Approximately -61°C (-78°F) 160° (from the SSE) 16 knots (18 mph)
150mb 14,250m (46,752 ft) -65.1°C (-85.2°F) Reading usually unavailable when air temperature is below -40°C (-40°F) 355° (from the N) 12 knots (14 mph)

Information About Radiosonde:
- Launch Time: 23:08Z
- About Sonde: A descending radiosonde tracked automatically by satellite navigation with no solar or infrared correction.

Remarks Section...

Splash Location: 17.06N 48.31W
Splash Time: 23:23Z

Release Location: 17.02N 48.21W (View map)
Release Time: 23:08:53Z

Splash Location: 17.06N 48.31W (View map)
Splash Time: 23:23:23Z

Mean Boundary Level Wind (mean wind in the lowest 500 geopotential meters of the sounding):
- Wind Direction: 90° (from the E)
- Wind Speed: 26 knots (30 mph)

Deep Layer Mean Wind (average wind over the depth of the sounding):
- Wind Direction: 115° (from the ESE)
- Wind Speed: 22 knots (25 mph)
- Depth of Sounding: From 145mb to 1013mb

Average Wind Over Lowest Available 150 geopotential meters (gpm) of the sounding:
- Lowest 150m: 166 gpm - 16 gpm (545 geo. feet - 52 geo. feet)
- Wind Direction: 90° (from the E)
- Wind Speed: 22 knots (25 mph)

Sounding Software Version: AEV 20801

Part B: Data For Significant Levels...

Significant Temperature And Relative Humidity Levels...
Level Air Temperature Dew Point
1014mb (Surface) 26.0°C (78.8°F) 23.8°C (74.8°F)
946mb 21.4°C (70.5°F) 20.7°C (69.3°F)
850mb 17.6°C (63.7°F) 16.1°C (61.0°F)
792mb 16.8°C (62.2°F) Approximately 12°C (54°F)
747mb 14.0°C (57.2°F) Approximately 8°C (46°F)
731mb 13.2°C (55.8°F) Approximately 1°C (34°F)
634mb 4.0°C (39.2°F) Approximately -4°C (25°F)
592mb 0.4°C (32.7°F) -2.9°C (26.8°F)
551mb -1.3°C (29.7°F) Approximately -13°C (9°F)
480mb -7.7°C (18.1°F) -12.3°C (9.9°F)
439mb -10.9°C (12.4°F) Approximately -21°C (-6°F)
424mb -12.9°C (8.8°F) -17.0°C (1.4°F)
401mb -15.7°C (3.7°F) Approximately -30°C (-22°F)
349mb -22.7°C (-8.9°F) Approximately -37°C (-35°F)
320mb -28.3°C (-18.9°F) Approximately -34°C (-29°F)
310mb -29.3°C (-20.7°F) -31.6°C (-24.9°F)
287mb -33.1°C (-27.6°F) -36.3°C (-33.3°F)
275mb -34.9°C (-30.8°F) Approximately -41°C (-42°F)
228mb -46.3°C (-51.3°F) -49.5°C (-57.1°F)
195mb -55.1°C (-67.2°F) Approximately -63°C (-81°F)
173mb -61.5°C (-78.7°F) Reading usually unavailable when air temperature is below -40°C (-40°F)
145mb -65.7°C (-86.3°F) -70.1°C (-94.2°F)

Significant Wind Levels...
Level Wind Direction Wind Speed
1014mb (Surface) 95° (from the E) 20 knots (23 mph)
989mb 90° (from the E) 27 knots (31 mph)
955mb 90° (from the E) 30 knots (35 mph)
817mb 115° (from the ESE) 29 knots (33 mph)
655mb 115° (from the ESE) 47 knots (54 mph)
609mb 100° (from the E) 39 knots (45 mph)
575mb 115° (from the ESE) 35 knots (40 mph)
536mb 80° (from the E) 27 knots (31 mph)
521mb 90° (from the E) 23 knots (26 mph)
482mb 80° (from the E) 19 knots (22 mph)
460mb 100° (from the E) 20 knots (23 mph)
416mb 90° (from the E) 18 knots (21 mph)
323mb 130° (from the SE) 23 knots (26 mph)
251mb 120° (from the ESE) 16 knots (18 mph)
205mb 160° (from the SSE) 17 knots (20 mph)
184mb 155° (from the SSE) 13 knots (15 mph)
170mb 200° (from the SSW) 19 knots (22 mph)
166mb 180° (from the S) 14 knots (16 mph)
158mb 170° (from the S) 1 knots (1 mph)
156mb 340° (from the NNW) 10 knots (12 mph)
154mb 340° (from the NNW) 16 knots (18 mph)
153mb 335° (from the NNW) 16 knots (18 mph)

---
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Quoting futuremet:


That is because big-brother GFS weakens it substantially, and expect it to be a weak inverted trough traversing across Cuba. The GFS' are not probably initializing Anal; this is probably due to its small size or a displaced center.


:)
Member Since: April 26, 2009 Posts: 3 Comments: 3667
Test message for image upload
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Quoting WeatherStudent:
Yes it will, fellow young bloggers. That through has not even entered the Pacific Northwestyet, so it'll be a race against time alright.


You are a great mentor to our younger bloggers.
Member Since: April 26, 2009 Posts: 3 Comments: 3667
Quoting hurricane23:
new GFDL is south with ana it kills it near the caymans.


That is because big-brother GFS weakens it substantially, and expect it to be a weak inverted trough traversing across Cuba. The GFS' grid systems are probably not initializing Ana properly; this is probably due to its small size or a displaced center.
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1856. Drakoen
Quoting Orcasystems:


No actually he isn't.


I don't consider him a met either. I consider you a met when you go to college and get your bachelors degree in meteorolgy or a form of atmospheric science.


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Quoting TaminFLA:


First time I have laughed all day on the blog!!!!!
Well I think she is getting dress tonight while big Bill is showing off his muscles.
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Floyd was just a big massive storm, didn't make landfall in south carolina but we was on the left hand side of the storm..

And to refresh my memory, someone once told me that if you are on the left side of a hurricane you will get the most rain and wind..is that true?
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Quoting Orcasystems:


No actually he isn't.


Really? Hmm I thought he was.
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Quoting jurakantaino:
Is not that you want them to cause damage,but love thrill, the excitement, and the interesting meteorological process involve in their formation. And when ever my island is hit by this system im out there facing the storm like Jim Cantore.


I am a long time lurker on this blog and do NOT post hardly at all, I have to agree, I do the same thing! At the same time taking the necessary precautions for safety first.
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ok orca then his prognosis was wrong? better??
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Quoting palmpt:


We all discussed, Masters included, that homegrown systems might rule this year in light of El Nino. Might this be one of them?


Pretty decent probability.
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Quoting HurricaneKyle:


StormW's a met too.


No actually he isn't.
Member Since: October 1, 2007 Posts: 81 Comments: 26511
000
WTNT32 KNHC 152331
TCPAT2
BULLETIN
TROPICAL STORM ANA INTERMEDIATE ADVISORY NUMBER 15A
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL022009
800 PM AST SAT AUG 15 2009

...ANA RACING WESTWARD WITH LITTLE CHANGE IN STRENGTH...

A TROPICAL STORM WATCH IS IN EFFECT FOR ST. MAARTEN...SABA...AND ST.
EUSTATIUS. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM
CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN
36 HOURS.

INTERESTS ELSEWHERE IN THE LEEWARD ISLANDS...THE VIRGIN
ISLANDS...AND PUERTO RICO SHOULD MONITOR THE PROGRESS OF ANA.
ADDITIONAL WATCHES AND WARNINGS MAY BE REQUIRED FOR PORTIONS OF
THESE AREAS TONIGHT AND SUNDAY.

FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED
STATES...INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS...PLEASE
MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE
FORECAST OFFICE. FOR STORM INFORMATION SPECIFIC TO YOUR AREA
OUTSIDE OF THE UNITED STATES...PLEASE MONITOR PRODUCTS ISSUED
BY YOUR NATIONAL METEOROLOGICAL SERVICE.

AT 800 PM AST...0000 UTC...THE CENTER OF TROPICAL STORM ANA WAS
LOCATED NEAR LATITUDE 14.4 NORTH...LONGITUDE 50.4 WEST OR ABOUT
730 MILES...1180 KM...EAST-SOUTHEAST OF THE LEEWARD ISLANDS.

ANA IS MOVING TOWARD THE WEST NEAR 17 MPH...28 KM/HR. A TURN TOWARD
THE WEST-NORTHWEST IS EXPECTED DURING THE NEXT COUPLE OF DAYS.
THIS MOTION COULD BRING THE CENTER OF ANA NEAR THE LEEWARD ISLANDS
ON MONDAY.

MAXIMUM SUSTAINED WINDS REMAIN NEAR 40 MPH...65 KM/HR...WITH HIGHER
GUSTS. SOME SLOW STRENGTHENING IS POSSIBLE DURING THE NEXT
48 HOURS.

TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 70 MILES...110 KM
FROM THE CENTER.

ESTIMATED MINIMUM CENTRAL PRESSURE IS 1004 MB...29.65 INCHES.

...SUMMARY OF 800 PM AST INFORMATION...
LOCATION...14.4N 50.4W
MAXIMUM SUSTAINED WINDS...40 MPH
PRESENT MOVEMENT...WEST OR 270 DEGREES AT 17 MPH
MINIMUM CENTRAL PRESSURE...1004 MB

THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT
1100 PM AST.

$$
FORECASTER AVILA
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1846. IKE
Quoting Beachfoxx:
1820. IKE

Hey Ike,

This late start has caught many off guard... let's hope that the storms don't make a trek toward us!


The one in the SE GOM will be moving in to us tomorrow. Looks better on satellite this evening. I wouldn't rule out a TD to a weak TS with it.
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Quoting WeatherMSK:


Rapid intensification, upper level low, and some weakest in the ridge might help steer it towards the trough more.


There have been strong storms that have been known to break through ridges.
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1844. BrandiQ
Quoting caneluver:
Bill is moving @ 17mph. He will beat out the trough!


Can you please explain what that mean?
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8 AM out for Ana, no change in strength down 1 MB.
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1842. palmpt
Quoting WeatherMSK:
That Gulf low looks ominous. Quick development with those outrageously high Gulf temps. This is a good opportunity for El Nino to show its might. (westerlies)


We all discussed, Masters included, that homegrown systems might rule this year in light of El Nino. Might this be one of them?
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1820. IKE

Hey Ike,

This late start has caught many off guard... let's hope that the storms don't make a trek toward us!
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Quoting CosmicEvents:

There isn't a single fully trained met left on the site, except for Dr. Masters of course. The couple we had have fled for higher waters. We have 1 recommended by Dr. Masters met(weather456), and 1 quasi-met, and 3000 amateur mets with a handful being presently studying fully trained mets.


Who?
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Quoting caneluver:
Bill is moving @ 17mph. He will beat out the trough!


Rapid intensification, upper level low, and some weakest in the ridge might help steer it towards the trough more.
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Quoting HurricaneKyle:


StormW's a met too.


Nope.
Member Since: April 26, 2009 Posts: 3 Comments: 3667
1837. A4Guy
Jut for fun, I went to the Colo State site and looked at the model output run for Hurricane Ike last year. For those that feel certain about where the two active storms are headed, this might be a worthwhile exercise for you. On 9/4, the models had Ike skirting up the cost of Florida. Of course we know that on 9/13, Ike made landfall near Galveston, Texas.
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1836. eddye
brandi come to tropic chat and everyone else
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1835. mks
Quoting weathersp:


LOL Winds don't get that strong at that level in the tropics...

That sonde must of been going reeally fast when it ejected from the plane...


The winds do get that strong over the tropics.. I have seen jet streams over 100 kts over the caribbean islands chain and going out into the atlantic
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Quoting WeatherMSK:


Thank you I'm not alone with this thinking.

so as sgt. friday would say...just the facts, please.
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Quoting CosmicEvents:

There isn't a single fully trained met left on the site, except for Dr. Masters of course. The couple we had have fled for higher waters. We have 1 recommended by Dr. Masters met(weather456), and 1 quasi-met, and 3000 amateur mets with a handful being presently studying fully trained mets.


StormW's a met too.
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Quoting CosmicEvents:

There isn't a single fully trained met left on the site, except for Dr. Masters of course. The couple we had have fled for higher waters. We have 1 recommended by Dr. Masters met(weather456), and 1 quasi-met, and 3000 amateur mets with a handful being presently studying fully trained mets.


If you had read the full conversation I was talking about mets on tv.
Member Since: April 26, 2009 Posts: 3 Comments: 3667
Quoting caneluver:
Bill is moving @ 17mph. He will beat out the trough!
i agree.
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1828. jdjnola
Quoting Drakoen:
Yesterday the GFS had this big ridge and now it has a big trough. I don't know how anyone can say with certainty that they are safe.


Wise words backed up by evidence...
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1827. BrandiQ
Quoting Category5hitsNewYork:
HEY EVERYONE WE ARE HOLDING A SECRET HURRICANE MEETING AT TROPIC CHAT! COME NOW


Not much of a secret now, is it?
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Quoting chevycanes:
Very impressive, I think Bill should have winds over 50 knots at 11
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Even if Bill misses Florida, you have to remember the East coast could be hit too, the GFS model looked a lot like Floyd or Hugo IMO and Isabel too.
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Quoting CaneWarning:


No, we have more than one met...

There isn't a single fully trained met left on the site, except for Dr. Masters of course. The couple we had have fled for higher waters. We have 1 recommended by Dr. Masters met(weather456), and 1 quasi-met, and 3000 amateur mets with a handful being presently studying fully trained mets.
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Quoting AGuyInAustin:
Category5hitsNewYork has made a prediction in the Tropics Chat.

This is his warning, up to date info.

Ana is starting to cook up in the Atlantic. He predicts a landfall in the Miami area at Category 2 on around the 20th or 21st. It will then recurve and hit either Mobile or Tampa.

Bill, will become the monster of August, becoming a category 4 and hitting Charelston or Savannah on the 25th. It will be a Ghost of Hugo as he states.

One thing is certain, be prepared!!!

Join the tropics chat for one to track the storm and save lives!


If it will be the ghost of Hugo, why would it hit Savannah, Hugo, make landfall near Charleston. And also, note: Hugo made landfall on September 22. So why would its ghost come bac in less than nearly a month to his date of birth and his date of landfall??
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1820. IKE
TROPICAL WEATHER OUTLOOK
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
800 PM EDT SAT AUG 15 2009

FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...

THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON TROPICAL
STORM ANA...LOCATED ABOUT 735 MILES EAST-SOUTHEAST OF THE LEEWARD
ISLANDS...AND ON TROPICAL STORM BILL...LOCATED ABOUT 820 MILES
WEST-SOUTHWEST OF THE CAPE VERDE ISLANDS.

A LARGE AREA OF CLOUDINESS AND THUNDERSTORMS OVER THE SOUTHEASTERN
GULF OF MEXICO IS PRIMARILY ASSOCIATED WITH A TROPICAL WAVE
INTERACTING WITH A MID- TO UPPER-LEVEL TROUGH. THIS ACTIVITY HAS
BECOME A LITTLE MORE CONCENTRATED OVER THE SOUTHEASTERN GULF OF
MEXICO WHERE SURFACE PRESSURES ARE BEGINNING TO FALL. THERE ARE NO
SIGNS OF A SURFACE CIRCULATION AT THIS TIME AND ANY ADDITIONAL
DEVELOPMENT...IF ANY...SHOULD BE SLOW TO OCCUR. THIS SYSTEM SHOULD
MOVES TOWARD THE NORTHWEST OVER THE EASTERN GULF OF MEXICO ON
SUNDAY. THERE IS A LOW CHANCE...LESS THAN 30 PERCENT...OF THIS
SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS.


ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE
NEXT 48 HOURS.

PUBLIC ADVISORIES ON TROPICAL STORM ANA ARE ISSUED UNDER WMO HEADER
WTNT32 KNHC AND UNDER AWIPS HEADER MIATCPAT2. FORECAST/ADVISORIES
ARE ISSUED UNDER WMO HEADER WTNT22 KNHC AND UNDER AWIPS HEADER
MIATCMAT2.

PUBLIC ADVISORIES ON TROPICAL STORM BILL ARE ISSUED UNDER WMO
HEADER WTNT33 KNHC AND UNDER AWIPS HEADER MIATCPAT3.
FORECAST/ADVISORIES ARE ISSUED UNDER WMO HEADER WTNT23 KNHC AND
UNDER AWIPS HEADER MIATCMAT3.

$$
FORECASTER AVILA/KIMBERLAIN

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Bill looking very nice on quikscat.
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Quoting P451:


That chick hasn't seemed to be able to keep her clothes on since she left Africa. Maybe there's a reason some models take her to New Orleans: Mardi Gras Girls Gone Wild video opportunity?

...and with that, you all have a good evening.


First time I have laughed all day on the blog!!!!!
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That Gulf low looks ominous. Quick development with those outrageously high Gulf temps. This is a good opportunity for El Nino to show its might. (westerlies)
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Quoting Category5hitsNewYork:
HEY EVERYONE WE ARE HOLDING A SECRET HURRICANE MEETING AT TROPIC CHAT! COME NOW
So much for "secret".
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Quoting CaneWarning:
I'm starting to think some people want these storms to hit them.
Is not that you want them to cause damage,but love the thrill, the excitement, and the interesting meteorological process involve in their formation. And when ever my island is hit by this system im out there facing the storm like Jim Cantore.
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8:00 PM AST Sat Aug 15
Location: 14.4°N 50.4°W
Max sustained: 40 mph
Moving: W at 17 mph
Min pressure: 1004 mb Per the NHC
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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.