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Tormenta Helene

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Cycloneye
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Tormenta Helene

Post by Cycloneye »

A tropical wave is forecast to emerge off the coast of west Africa
in a few days. Some development of the system is possible over the
weekend while the wave moves westward over the far eastern
tropical Atlantic Ocean.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 5 days...low...20 percent.

Image
Arlequín
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Re: Onda Tropical dentro de Africa 0%/30%

Post by Arlequín »

Con la incertidumbre que hay con los sistemas delante de este... no me gustaría darle bola negra a este disturbio
2. A tropical wave is forecast to move off the west coast of Africa
on Friday. Some development of this system is anticipated after
that time, and a tropical depression could form over the weekend or
early next week while the wave moves westward over the far eastern
tropical Atlantic Ocean.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 5 days...medium...40 percent.
edgardo
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Re: Onda Tropical dentro de Africa 0%/30%

Post by edgardo »

8am- 6 de septiembre de 2018

Se pronostica que una onda tropical se mueva fuera de la costa oeste
de Africa el viernes. Algun desarrollo de este sistema es posible
luego, y una depresion tropical pudiera formarse durante el fin de
semana o a principios de la semana proxima, mientras la onda se
mueve hacia el oeste sobre el lejano Oceano Atlantico este tropical.
* Probabilidad de formacion en 48 horas...baja...0 por ciento.
* Probabilidad de formacion en 5 dias...mediana...40 por ciento.
emh- huracan es simplemente ahora Edgardo. Importante: Phil Klotzbach, recordó que "el mejor momento para prepararse para los huracanes es cuando todavía no hay huracanes".
edgardo
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Re: Onda Tropical dentro de Africa 0%/30%

Post by edgardo »

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
200 PM EDT Thu Sep 6 2018

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:


A tropical wave is forecast to move off the west coast of Africa
on Friday. Development of this system is anticipated after that
time, and a tropical depression could form over the weekend or early
next week while the wave moves westward or west-northwestward over
the far eastern tropical Atlantic Ocean. Interests in the Cabo
Verde Islands should monitor the progress of this system during the
next several days.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 5 days...medium...60 percent.

$$
Forecaster Berg
emh- huracan es simplemente ahora Edgardo. Importante: Phil Klotzbach, recordó que "el mejor momento para prepararse para los huracanes es cuando todavía no hay huracanes".
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Cycloneye
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Re: INVEST 93L

Post by Cycloneye »

8 PM.

A tropical wave and an accompanying low pressure system near the
west coast of Africa is producing a large area of thunderstorms.
Environmental conditions appear conducive for development, and a
tropical depression or tropical storm is likely to form over the
weekend while the wave moves westward or west-northwestward over the
far eastern tropical Atlantic Ocean. Interests in the Cabo Verde
Islands should monitor the progress of this system, and potential
tropical cyclone advisories could be issued on Friday.
* Formation chance through 48 hours...high...70 percent.
* Formation chance through 5 days...high...90 percent.
edgardo
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Re: INVEST 93L: 70%/90%

Post by edgardo »

Version en Español:

Perspectivas sobre las Condiciones del Tiempo Tropical
Emitido por El Centro Nacional de Huracanes Miami, FL
Traducido por el Servicio Nacional de Meteorologia San Juan, PR
800 PM EDT jueves 6 de septiembre de 2018

Para el Atlantico Norte...Mar Caribe y Golfo de Mexico:

El Centro Nacional de Huracanes esta emitiendo advertencias sobre el
Huracan Florence, localizado sobre el centro del Oceano Atlantico.
El Centro de Predicciones Meteorologicas esta emitiendo advertencias
sobre la Depresion Tropical Gordon, localizada sobre Arkansas.



Una onda tropical con un area de baja presion cerca de la costa
oeste de Africa esta produciendo un area amplia de tronadas. Las
condiciones ambientales aparentan estar favorables para desarrollo y
una depresion tropical o tormenta tropical pudiera formarse durante
el fin de semana mientras la onda se mueva hacia el oeste u oeste
noroeste sobre el este del Oceano Atlantico tropical. Los intereses
en las Islas de Cabo Verde deben permanecer atentos a este sistema y
advertencias de ciclon tropical potencial deben emitirse el viernes.
* Probabilidad de formacion en 48 horas...alta...70 por ciento.
* Probabilidad de formacion en 5 dias...alta...90 por ciento.

$$

Pronosticador Blake
Traduccion Vazquez
emh- huracan es simplemente ahora Edgardo. Importante: Phil Klotzbach, recordó que "el mejor momento para prepararse para los huracanes es cuando todavía no hay huracanes".
edgardo
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Re: INVEST 93L

Post by edgardo »

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
800 AM EDT Fri Sep 7 2018

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

The National Hurricane Center is issuing advisories on Hurricane
Florence, located over the central Atlantic Ocean. The Weather
Prediction Center is issuing advisories on Tropical Depression
Gordon, located over Arkansas.

Satellite images indicate that the circulation of a low pressure
system located about 650 miles west of the Cabo Verde Islands is
gradually becoming better defined. In addition, the associated
showers and thunderstorms remain fairly concentrated near the
center. This system is expected to become a tropical depression
later today or tonight while it moves slowly westward across the
tropical Atlantic Ocean.
* Formation chance through 48 hours...high...90 percent.
* Formation chance through 5 days...high...90 percent.

Showers and thunderstorms continue to become better organized in
association with a low pressure system located just off the west
coast of Africa. Environmental conditions are conducive for
development, and a tropical depression or tropical storm is expected
to form later today or tonight while the low moves westward or
west-northwestward over the far eastern tropical Atlantic Ocean.
Interests in the Cabo Verde Islands should monitor the progress of
this system.
* Formation chance through 48 hours...high...90 percent.
* Formation chance through 5 days...high...90 percent.


$$
Forecaster Cangialos
emh- huracan es simplemente ahora Edgardo. Importante: Phil Klotzbach, recordó que "el mejor momento para prepararse para los huracanes es cuando todavía no hay huracanes".
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Re: INVEST 93L

Post by edgardo »

BULLETIN
Potential Tropical Cyclone Eight Advisory Number 1
NWS National Hurricane Center Miami FL AL082018
1100 AM AST Fri Sep 07 2018

...TROPICAL STORM WARNINGS ISSUED FOR THE SOUTHERN CABO VERDE
ISLANDS...
...HEAVY RAINFALL ALSO EXPECTED...


SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...13.1N 17.8W
ABOUT 460 MI...735 KM ESE OF THE SOUTHERNMOST CABO VERDE ISLANDS
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...W OR 275 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:

The government of the Cabo Verde Islands has issued a Tropical
Storm Warning for the southern islands of Santiago, Fogo and
Brava.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Santiago, Fogo, and Brava

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area within 36 hours.

For storm information specific to your area, please monitor
products issued by your national meteorological service.


DISCUSSION AND OUTLOOK
----------------------
At 1100 AM AST (1500 UTC), the disturbance was centered near
latitude 13.1 North, longitude 17.8 West. The system is moving
toward the west near 10 mph (17 km/h). A westward to west-
northwestward motion with a gradual increase in forward speed is
expected during the next 72 hours. On the forecast track, the
disturbance is expected to move near the southern Cabo Verde Islands
on Sunday.

Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Strengthening is forecast during the next 72 hours, and the
system is expected to become a tropical depression or tropical storm
later today.

Conditions are conducive for the disturbance to become a tropical
depression or tropical storm later today.
* Formation chance through 48 hours...high...90 percent
* Formation chance through 5 days...high...90 percent

The estimated minimum central pressure is 1004 mb (29.65 inches).


HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions are expected to first reach the
warning area on Sunday.

RAINFALL: The disturbance is expected to produce total rain
accumulations of 3 to 5 inches, with maximum totals of 8 inches
across the southern Cabo Verde Islands. This rainfall may produce
life-threatening flash floods.


NEXT ADVISORY
-------------
Next intermediate advisory at 200 PM AST.
Next complete advisory at 500 PM AST.

$$
Forecaster Brennan
emh- huracan es simplemente ahora Edgardo. Importante: Phil Klotzbach, recordó que "el mejor momento para prepararse para los huracanes es cuando todavía no hay huracanes".
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Cycloneye
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Re: Tormenta Tropical Helene

Post by Cycloneye »


Tropical Storm Helene Discussion Number 3
NWS National Hurricane Center Miami FL AL082018
1100 PM AST Fri Sep 07 2018

A very timely ASCAT pass indicated that the winds associated with
the depression have increased to 35 kt, and also that the center was
a little east of the location previously indicated. This is very
common in systems during the formative stage. Based on the ASCAT
data, the system has been upgraded to Tropical Storm Helene, the
eighth named storm of the season. The satellite presentation has
also improved during the past several hours, and now the cyclone has
large cyclonically curved convective bands to the south of the
center. The outflow is fair in all quadrants.

Helene will be moving over warm waters and within an environment
of light shear through the next 3 to 4 days, and most of the
guidance responds to that environment by gradually strengthening the
cyclone. The NHC forecast follows the trend of the intensity
consensus, and brings Helene to hurricane intensity in about 3 days.

Currently, Helene is embedded within a southwest monsoon-type flow,
and is moving toward the west at about 9 or 10 knots. However, as
the cyclone moves away from the African coast, it will become
steered by the easterly flow around the subtropical ridge and should
then increase in forward speed. Most of the track models are in
extremely good agreement, at least for the next 3 days when the
confidence in the forecast is high. At the long range, a mid-level
trough is expected to develop over the central Atlantic, forcing the
cyclone to turn more to the northwest and even north later on. The
NHC forecast is in the middle of the guidance envelope and basically
on top of the corrected consensus HCCA.


FORECAST POSITIONS AND MAX WINDS

INIT 08/0300Z 13.6N 18.5W 35 KT 40 MPH
12H 08/1200Z 13.8N 19.9W 35 KT 40 MPH
24H 09/0000Z 14.3N 22.3W 40 KT 45 MPH
36H 09/1200Z 14.8N 25.0W 50 KT 60 MPH
48H 10/0000Z 15.4N 28.0W 55 KT 65 MPH
72H 11/0000Z 17.0N 33.9W 65 KT 75 MPH
96H 12/0000Z 18.5N 39.0W 65 KT 75 MPH
120H 13/0000Z 20.5N 42.5W 60 KT 70 MPH

$$
Forecaster Avila
edgardo
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Re: Tormenta Tropical Helene

Post by edgardo »

BULLETIN
Tropical Storm Helene Advisory Number 6
NWS National Hurricane Center Miami FL AL082018
500 PM AST Sat Sep 08 2018

...HELENE STRENGTHENING...
...TROPICAL STORM CONDITIONS EXPECTED TO REACH PORTIONS OF THE CABO
VERDE ISLANDS TONIGHT...


SUMMARY OF 500 PM AST...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...13.6N 21.7W
ABOUT 155 MI...250 KM SE OF PRAIA IN THE CABO VERDE ISLANDS
MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H
PRESENT MOVEMENT...W OR 275 DEGREES AT 13 MPH...20 KM/H
MINIMUM CENTRAL PRESSURE...998 MB...29.47 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Hurricane Watch is in effect for...
* The Cabo Verde islands of Santiago, Fogo, and Brava

A Tropical Storm Warning is in effect for...
* The Cabo Verde islands of Santiago, Fogo, and Brava

A Hurricane Watch means that hurricane conditions are possible
within the watch area, in this case within the next 24 to 36 hours.

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within the
next 24 to 36 hours.

For storm information specific to your area, please monitor
products issued by your national meteorological service.


DISCUSSION AND OUTLOOK
----------------------
At 500 PM AST (2100 UTC), the center of Tropical Storm Helene was
located near latitude 13.6 North, longitude 21.7 West. Helene is
moving toward the west near 13 mph (20 km/h), and this general
motion will likely continue through Sunday. A gradual turn toward
the west-northwest with an increase in forward speed is expected
Sunday night through Tuesday. On the forecast track, Helene will
pass very close to the southern Cabo Verde Islands tonight and early
Sunday.

Maximum sustained winds have increased to near 60 mph (95 km/h) with
higher gusts. Additional strengthening is expected during the next
few days, and Helene is forecast to become a hurricane on Sunday.

Tropical-storm-force winds extend outward up to 60 miles (95 km)
from the center.

The estimated minimum central pressure is 998 mb (29.47 inches).


HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions are expected to first reach the
warning area during the next several hours. Hurricane conditions
are possible in the southernmost Cabo Verde Islands on Sunday.

RAINFALL: Helene is expected to produce total rain accumulations of
3 to 5 inches over the southern Cabo Verde Islands through Sunday,
with isolated maximum amounts of 8 inches. This rainfall may produce
life-threatening flash floods.


NEXT ADVISORY
-------------
Next intermediate advisory at 800 PM AST.
Next complete advisory at 1100 PM AST.

$$
Forecaster Beven
emh- huracan es simplemente ahora Edgardo. Importante: Phil Klotzbach, recordó que "el mejor momento para prepararse para los huracanes es cuando todavía no hay huracanes".
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