Tropical Storm Irma Advisory – Lesser Antilles

Advisory

Tropical Storm Irma is intensifying steadily over the far eastern Atlantic. For the time being, all interests in the Lesser Antilles are advised to monitor Irma’s progress over the next couple of days. Furthermore, forecast models show a possible trajectory to these islands. As a result, Guadeloupe, Dominica, and Martinique  lie more or less at the center of this trajectory.

TS Irma Forecast Cone
Forecast Cone for TS Irma Storm Center – 30th Aug 2017, 5:00PM AST showing forecast track line.

Tropical Storm Irma – Formation

Tropical Storm Irma is the ninth tropical storm of the season which formed in the Eastern Atlantic today at or before 11:00 am on Wednesday, August 30, just west of the Cabo Verde Islands.

Current Location & Additional Technical Information

At 500 PM AST (2100 UTC) Wed Aug 30 2017, the center of Tropical Storm Irma was located near latitude 16.4 North, longitude 31.2 West. Irma is moving toward the west near 15 mph (24 km/h). The tropical storm is expected to turn slightly toward the west-northwest at a slower rate of speed for the next couple of days. As the high strengthens, Irma is expected to turn toward the west-southwest around day 4.

Irma’s maximum sustained winds were near 60 mph (95 km/h) at 5:00PM today with higher gusts. Forecasts are showing steady strengthening during the next 48 hours.

Tropical-storm-force winds extend outward up to 35 miles (55 km)
from the center.

The storm’s estimated minimum central pressure is 1001 mb (29.56 inches).

Irma is expected to become a Category 1 hurricane as early as Thursday evening. At that time, wind speeds are expected to be around 80 mph (100 km/h) . Should conditions persist as anticipated, this tropical storm is expected to become a Category 2 hurricane by Saturday evening, on the 2nd, September. As a result, wind speeds up to 100 mph (120 km/h) can be anticipated.

The storm’s trajectory as illustrated cannot be relied upon at present and it is still fairly distant towards the east. Consequently, there are no warnings or watches in effect at the present time.

Local & Regional Advisory

The Dominica Meteorological Service expects the system to approach the area by early next week. Please visit its website for more guidance and information.

Weather Forecast for the Next 24 Hours

We expect that weak and unstable conditions will produce cloudiness, shower and isolated thunderstorm activity across parts of the island chain. These conditions are already in effect.

Seas are slight to moderate and are expected to produce waves peaking at near 5.0 feet.

Next Advisory

The next complete advisory from the National Oceanic & Atmospheric Administration’s (NOAA) National Hurricane Center will be at 1100 PM AST.

Useful Links

For advise and instructions, please visit our Hurricane Season page for more useful links.

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