LFSO — Nancy-Ochey (BA 133) Air Base

fog forecast & climatology · Thuilley-aux-Groseilles city page · full 10-year analysis →
No fog forecast feed exists for this station. September typically brings about 5 hours of dense fog here (10-year average).

Fog hours per year
166 h below CAT I minima (2016–2026 average)
Fog season
November and December
Typical fog event
~2 h once it forms (middle half 1–4 h, n=497)
Data through
2026-08-15 · machine-readable data.json

When this airport fogs in

In a typical year Nancy-Ochey (BA 133) Air Base spends 166 hours below CAT I approach minima (visibility under ~½ mile or ceiling under 200 ft), concentrated in November and December. The strip above shows the hour-by-hour pattern for the current month from ten years of weather observations.

Fog season

January: ~22 hJanFebruary: ~14 hFebMarch: ~8 hMarApril: ~3 hAprMay: ~3 hMayJune: ~3 hJunJuly: ~0 hJulAugust: ~3 hAugSeptember: ~5 hSepOctober: ~25 hOctNovember: ~48 hNovDecember: ~36 hDec
Fog season runs October through February, peaking in November; fog is mostly a 1 AM–11 AM phenomenon; typically thinning out by 2 PM; a typical event lasts about 2 hours once it forms local time · 10-yr average

For flight operations

EFVS crews: the CHASE board ranks airports by live fog status, approach lighting, go-around height and flight time from your base. Forecast probabilities publish here per-airport once the calibrated model beats climatology on live verification — receipts on the scorecard. Methodology.

Sources: NOAA/NWS National Blend of Models guidance · METAR observations 2016–2026 (Iowa Environmental Mesonet) · FAA NASR. Machine access: data.json · llms.txt. Not for operational use.