...LEE MOVING WESTWARD WITH NO CHANGE IN STRENGTH... As of 5:00 PM AST Sat Sep 16 the center of Lee was located near 12.6, -34.2 with movement W at 10 mph. The minimum central pressure was 1007 mb with maximum sustained winds of about 40 mph.
Tropical Storm Lee
Sustained Wind Speed: 40 MPH
Location: Lon: -34.2 Lat: 12.6
Movement: W at 10 mph
Pressure: 1007 mb : 29.74 Hg
[caption id="" align="aligncenter" width="600" ] Current Track of Tropical Storm Lee [/caption]
[caption id="" align="aligncenter" width="600" ]Probability of Tropical Force Winds for Tropical Storm Lee [/caption]
[caption id="" align="aligncenter" width="600" ]Probability of Tropical Storm Force Winds for Tropical Storm Lee [/caption]
[caption id="" align="aligncenter" width="600" ]Tropical Force Winds Arrival Time for Tropical Storm Lee [/caption]
WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 500 PM AST (2100 UTC), the center of Tropical Storm Lee was
located near latitude 12.6 North, longitude 34.2 West. Lee is
moving toward the west near 10 mph (17 km/h), and this motion is
expected to continue through Sunday. A west-northwestward motion is
expected Sunday night and Monday.
Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Little change in strength is forecast during the next 48 hours.
Tropical-storm-force winds extend outward up to 115 miles (185 km)
from the center.
The estimated minimum central pressure is 1007 mb (29.74 inches).
HAZARDS AFFECTING LAND
----------------------
None
NEXT ADVISORY
-------------
Next complete advisory at 1100 PM AST.
DISCUSSION
500 PM AST Sat Sep 16 2017
Lee has changed little in organization since the last advisory, and
the low-level center appears to be located along the northern edge
of a persistent cluster of deep convection. Dvorak estimates have
not changed, and the initial intensity is kept at 35 kt based on
the earlier ASCAT data.
Lee is moving westward, or 270/9 kt, to the south of a weak
mid-level ridge, and it should maintain that trajectory for the
next 24 hours. After that time, a break in the ridge should
develop, but the weak nature of the cyclone should prevent it from
turning too sharply toward the northwest. The updated NHC track
forecast is relatively unchanged from the previous forecast, and it
continues to lie south of the various consensus aids, closest to
the HCCA model.
Some slight strengthening is possible during the next day or so,
but continued north-northwesterly shear is likely to prevent
significant intensification. Weakening is anticipated from 48
hours onward due to increasingly hostile shear, and Lee is likely
to become a depression by day 3 and degenerate into a remnant low
by day 5. The intensity models have come down a little on this
cycle, and the NHC forecast is actually a little generous, staying
close to the SHIPS model along the upper bound of the guidance
envelope.
FORECAST POSITIONS AND MAX WINDS
INIT 16/2100Z 12.6N 34.2W 35 KT 40 MPH
12H 17/0600Z 12.6N 35.2W 35 KT 40 MPH
24H 17/1800Z 12.7N 36.5W 40 KT 45 MPH
36H 18/0600Z 13.2N 38.1W 40 KT 45 MPH
48H 18/1800Z 13.9N 39.9W 35 KT 40 MPH
72H 19/1800Z 15.9N 43.5W 30 KT 35 MPH
96H 20/1800Z 17.5N 47.0W 30 KT 35 MPH
120H 21/1800Z 18.5N 51.0W 25 KT 30 MPH...POST-TROP/REMNT LOW