subtropical depression one

Subtropical Depression One Forms In Central Atlantic

Subtropical Depression One Forms In Central Atlantic

Subtropical Depression One Forms In Central Atlantic

We have a subtropical depression that has formed well out in the Central Atlantic this morning.  This has formed from a non tropical low that has been out in the Atlantic for the last few days. A core of convection has formed near the circulation center and it was enough for the National Hurricane Center to upgrade this to a subtropical depression. No strengthening is forecast due to cold waters and a strong shearing environment. The system is forecast to be absorbed by a non tropical low over the next 2 days or so. It is very unusual to see something like this in mid April though not unheard of. Tropical Storm Ana in 2003 formed in April and affected Florida with wind and rain. Here is a link to a list of off season tropical systems

ULLETIN
Subtropical Depression One Advisory Number   1
NWS National Hurricane Center Miami FL       AL012017
1100 AM AST Wed Apr 19 2017

...SUBTROPICAL DEPRESSION FORMS IN THE CENTRAL ATLANTIC...
...EXPECTED TO BE SHORT LIVED...


SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...31.9N 40.9W
ABOUT 890 MI...1435 KM WSW OF THE AZORES
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...NNE OR 30 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...995 MB...29.39 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 1100 AM AST (1500 UTC), the center of Subtropical Depression One
was located near latitude 31.9 North, longitude 40.9 West. The
subtropical depression is moving toward the north-northeast near 8
mph (13 km/h). A gradual turn to the north is expected tonight.

Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Little change in strength is forecast today, and the subtropical
depression is forecast to become absorbed by a large extratropical
low on Thursday.

The estimated minimum central pressure is 995 mb (29.39 inches).

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