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Atlantik: Tropska oluja Arlene (20.-21.4.2017.)

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Atlantik: Tropska oluja Arlene (20.-21.4.2017.)

PostPostao/la Ned » 20 tra 2017, 22:50

I ove godine rani početak sezone tropskih oluja na Atlantiku

Danas, iako se to nije očekivalo formirana TS Arlene, 19.4. je najprije deklarirana subtropska depresija, pa danas tropska depresija

Citat:
500 PM AST Thu Apr 20 2017

...RARE APRIL TROPICAL STORM FORMS IN THE NORTH ATLANTIC...
...STILL EXPECTED TO DISSIPATE ON FRIDAY...


SUMMARY OF 500 PM AST...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...37.7N 42.0W
ABOUT 815 MI...1315 KM W OF THE AZORES
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...WNW OR 290 DEGREES AT 25 MPH...41 KM/H
MINIMUM CENTRAL PRESSURE...993 MB...29.33 INCHES


Citat:
Maximum sustained winds are near 45 mph (75 km/h) with higher gusts.
Arlene is forecast to become absorbed by a large extratropical low
and dissipate on Friday.

Tropical-storm-force winds extend outward up to 105 miles (165 km)
from the center.


Zanimljiva diskusija

Citat:
500 PM AST Thu Apr 20 2017

I have to add one more surprise to my long hurricane forecasting
career. Unexpectedly, the subtropical cyclone became a tropical
depression this morning, and then it intensified to a tropical
storm.
This intensity estimate is based on the cloud pattern
presentation on satellite imagery which shows moderate thunderstorm
activity surrounding an eye-type feature, and a convective ring in
microwave imagery. Initial intensity is set at 40 kt, although
estimates from TAFB suggest that the winds could have reached 45 kt
around 1800 UTC. Since that time, the cloud pattern has deteriorated
somewhat and winds probably have diminished. Despite the
intensification, Arlene is still forecast by all global models to
become absorbed by a nearby developing extratropical cyclone on
Friday.

Arlene is moving toward the west-northwest at 22 kt, while well
embedded in the fast flow surrounding the extratropical low. This
general motion around the low is expected until dissipation on
Friday.

Tropical storms in April are rare and Arlene is only the second
one observed in this month during the satellite era.
It should be
noted, however, that this type of storm was practically impossible
to detect prior to the weather satellite era.


FORECAST POSITIONS AND MAX WINDS

INIT 20/2100Z 37.7N 42.0W 40 KT 45 MPH
12H 21/0600Z 38.7N 45.9W 35 KT 40 MPH...POST-TROPICAL
24H 21/1800Z...DISSIPATED


Forecaster Avila


slika

slika

slika
The snow comes down so fast and thick, you can actually watch it pile up, and you can even hear it

TORNADO F2
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Postovi: 30059
Pridružen/a: 22 svi 2004, 22:02
Lokacija: Labin, Istra

Re: Atlantik: Tropska oluja Arlene (20.4.2017.-)

PostPostao/la Ned » 20 tra 2017, 23:40

Zanimljiv put Arlene

slika
The snow comes down so fast and thick, you can actually watch it pile up, and you can even hear it

TORNADO F2
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Postovi: 30059
Pridružen/a: 22 svi 2004, 22:02
Lokacija: Labin, Istra

Re: Atlantik: Tropska oluja Arlene (20.-21.4.2017.)

PostPostao/la Ned » 21 tra 2017, 22:16

Kratka ali slatka olujica

Citat:
1100 AM AST Fri Apr 21 2017

...ARLENE MERGES WITH A LARGE EXTRATROPICAL CYCLONE...
...THIS IS THE LAST ADVISORY...


SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...39.3N 49.9W
ABOUT 1235 MI...1985 KM W OF THE AZORES
MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H
PRESENT MOVEMENT...SW OR 220 DEGREES AT 23 MPH...37 KM/H
MINIMUM CENTRAL PRESSURE...995 MB...29.39 INCHES
The snow comes down so fast and thick, you can actually watch it pile up, and you can even hear it

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