Tropical Depression Fay

Tropical Depression Fay is packing 30-kt (35-mph) winds, moving S at 4 kt (5 mph). Expected to stay over open water.

At 900 PM GMT (2100 UTC), the center of Tropical Depression Fay was located near latitude 28.9 North, longitude 44.0 West. The depression is moving toward the south near 5 mph (7 km/h). A south-southwest to southwest motion is expected over the next couple of days, followed by a turn toward the west-southwest with an increase in forward speed by mid-week. Maximum sustained winds remain near 35 mph (55 km/h) with higher gusts. Fay will likely become a remnant low in a day or two, and dissipate later in the week. The estimated minimum central pressure is 1011 mb (29.86 inches).— National Hurricane Center · public advisory 31

This is the Atlantic · 21°N–31°N, 53°W–42°W. Fay’s forecast track is the dotted spine — the labelled dots mark its position each day. Every cell is shaded by how many hours it spends inside Fay’s gale-force (≥34 kt · 39 mph) wind across the whole forecast, the damaging core counted double.

Read it two ways at once. Colour is the total — the hours of gale-force wind a place piles up. A slow storm writes its danger in duration, not in any single gust, so the longer the wind sits over a place, the deeper its colour. Opacity is confidence — solid where the official probability of that wind is high, faint where it is only a chance. So a deep, solid cell is a place the wind will work for a long time and likely will; a pale, faint one is a brief, uncertain brush at the edge of the cone.