Atw20 wind

Atw20 is a weather buoy near Shorewood in the Lake Michigan sailing area. Readings from NOAA NDBC.

Latest observation

Now 6 kn from S (170°), gusting 8 kn, 2026-11-04 00:00 UTC (Tuesday 3 Nov 18:00 America/Chicago). Air 12°C. 1010 hPa.

The last 24 hours

24 h: mean 13 kn, 17 readings, gust 19 kn, peak mean 16 kn, mostly S (181°).

Recent readings

2026-11-04 00:00 UTC: 6 kn from S (170°), gust 8 kn
2026-11-03 22:00 UTC: 8 kn from S (170°), gust 10 kn
2026-11-03 21:00 UTC: 10 kn from S (190°), gust 14 kn
2026-11-03 20:00 UTC: 12 kn from SSW (200°), gust 14 kn
2026-11-03 19:00 UTC: 10 kn from S (180°), gust 12 kn
2026-11-03 18:00 UTC: 14 kn from S (180°), gust 17 kn
2026-11-03 17:00 UTC: 14 kn from S (170°), gust 17 kn
2026-11-03 15:00 UTC: 12 kn from S (170°), gust 16 kn

Position 43.098, -87.850; exposure marine. Atw20 is on open water.

Forecast against this station

Judged on the forecast published by 6 am the same morning, over the last 7 days HRRR 3 km (NOAA) has had the smallest wind-speed error at Atw20: 2.2 kn on average across 94 hourly comparisons, against 2.6 kn for ECMWF IFS 0.25°.

Judged on the forecast published by 6 pm the evening before, over the last 7 days HRRR 3 km (NOAA) has had the smallest wind-speed error at Atw20: 2.5 kn on average across 94 hourly comparisons, against 2.6 kn for ECMWF IFS 0.25°.

How forecasts are checked.

Conditions map · All stations · Weather models

Stations near Atw20

Port of Milwaukee, 5.8 nm away
Milwaukee/Timmerman Arpt, 8.1 nm away
Milwaukee/Mitchell Intl, 8.9 nm away
CW2708 weather, 8.0 nm away
FW3660 weather, 9.7 nm away
DW5010 weather, 9.7 nm away