Tropical Depression Fay

Tropical Depression Fay is packing 30-kt (35-mph) winds, moving WSW at 8 kt (9 mph). Expected to stay over open water.

At 900 PM GMT (2100 UTC), the center of Post-Tropical Cyclone Fay was located near latitude 30.8 North, longitude 35.3 West. The post-tropical cyclone is moving toward the west-southwest near 9 mph (15 km/h). A gradual turn toward the west is expected during the next few days. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. The remnant low is expected to gradually weaken during the next few days. The estimated minimum central pressure is 1011 mb (29.86 inches).— National Hurricane Center · public advisory 14

This is the Atlantic · 26°N–34°N, 50°W–33°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.