Fœhn

Foehn indicators for Valais and the Alps, 4-day forecast.

2 graph(s) pinned to the home page.

Understanding the foehn How it forms, why it reaches the ground, and what eleven years of measurements show.

Pressure Lugano − Zürich

Lugano−Zürich

-2.0hPa
Neutral
Foehn possible Northerly flow Altdorf (km/h) - - - forecast

Pressure Domodossola − Sion

Domodossola−Sion

-1.0hPa
Neutral
Foehn possible Northerly flow - - - forecast

Pressure Visp − Evionnaz

Visp−Evionnaz

+2.1hPa
Down-valley
Down-valley Up-valley Visp (km/h) - - - forecast

700 hPa wind over the southern crest

700 hPa · ~3000 m

-0.6km/h
Neutral
Southerly flow Northerly flow - - - forecast

MeteoSwiss foehn index

MétéoSuisse · 12 stations

Visp no foehn 2/5

as of 10:00

  • Direction at Gütsch (90-240°) 156°
  • Direction on site 120°
  • Wind or gust 1.1 km/h
  • Humidity below the limit 66.7 %
  • Potential temperature -11.5 K
Sion no foehn 2/5

as of 10:00

  • Direction at Gütsch (90-240°) 156°
  • Direction on site 78°
  • Wind or gust 7.2 km/h
  • Humidity below the limit 66.6 %
  • Potential temperature -12.2 K
Aigle no foehn 2/5

as of 10:00

  • Direction at Gütsch (90-240°) 156°
  • Direction on site 142°
  • Wind or gust 9.4 km/h
  • Humidity below the limit 61.9 %
  • Potential temperature -11.2 K

The wind in the Rhone valley

Viège → Evionnaz

Viège 639 m SE 1/3
Varen 747 m SE 8/12
Chalais 520 m NE 4/9
Sion 482 m E 7/11
Evionnaz 482 m SE 18/31
down-valley windlight drainagevalley breeze

No established down-valley wind on the valley floor right now.

Wind aloft at Gütsch/Andermatt

Gütsch ob Andermatt 2287 m

+24.8km/h
Neutral
Southerly flow Northerly flow

Rhone valley stability

Sion 482 m / Gd St-Bernard 2472 m

0.37°C/100 m
Cold air on the floor foehn can stay above you
- - - Valley mixed - - - Cold air on the floor

Rain in Ticino

Locarno / Sion

0.0mm
Neutral
Locarno (south) Sion (north)

Foehn signature at Sion

Sion

gust Temperature Humidity - - - forecast
Understanding the foehn How it forms, why it reaches the ground, and what eleven years of measurements show.

Forecasts: Open-Meteo. On Lugano − Zürich and Visp − Evionnaz the solid part comes from MeteoSwiss measurements. On the other graphs it comes from the model: no source covers Domodossola, and a 700 hPa wind cannot be measured from the ground.