Typhoon Choi-Wan

Typhoon Choi-Wan is packing 80-kt (90-mph) winds, moving NNE at 23 kt (26 mph). Expected to stay over open water.

TYPHOON 26W (CHOI-WAN), LOCATED APPROXIMATELY 402 NM EAST-SOUTHEAST OF YOKOSUKA, JAPAN, HAS TRACKED NORTH- NORTHEASTWARD AT 23 KNOTS OVER THE PAST SIX HOURS. MINIMUM CENTRAL PRESSURE AT 061200Z IS 960 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 061200Z IS 42 FEET.— Joint Typhoon Warning Center · warning 27

This is the West Pacific · 32°N–48°N, 146°E–163°E. Choi-Wan’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 Choi-Wan’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 uniform here — this basin publishes no wind-speed-probability field, so the map claims no confidence it has not earned.