Tropical Depression Fay

Tropical Depression Fay is packing 30-kt (35-mph) winds, moving SSE at 3 kt (3 mph). Expected to stay over open water.

At 300 PM GMT (1500 UTC), the center of Tropical Depression Fay was located near latitude 29.3 North, longitude 43.8 West. The depression is moving toward the south-southeast near 3 mph (6 km/h). A slow turn to the south-southwest to southwest is forecast on Tuesday followed by a turn toward the west-southwest with an increase in forward speed by mid-week. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Little change in strength is forecast over the next several days. The estimated minimum central pressure is 1010 mb (29.83 inches).— National Hurricane Center · public advisory 30

This is the Atlantic · 21°N–31°N, 52°W–41°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.