Live · 11 Schweizer Seen

Confirmed. Not forecasted.

When the cantonal police switch on the warning light, your iPhone vibrates. Otherwise not.

Free · 11 Swiss lakes · iOS
LakeAlert app · Dashboard with active strong-wind warning
Active warning
LakeAlert app · Dashboard with active strong-wind warning on Bielersee, gusts 45–60 km/h
What an active warning looks like

Status on your wrist.

The Apple Watch shows the warning-light status of your active lake right on your wrist. One glance is enough. No phone fishing in your dry bag.

On-water mode keeps the status visible while you sail, surf or foil. When the level changes to strong wind or storm, the watch vibrates and the display wakes.

  • Standalone app. The watch does not need the iPhone in range
  • Watch-face complication with the current status
  • Long-press on the status opens Swiss Police 117, REGA 1414, EU 112
  • Adaptive layouts for Watch 41 mm, 45 mm, 49 mm Ultra

The watch checks the status every 2 min. The fastest channel remains the push to your iPhone (seconds after the light changes). Watch is the glance, iPhone is the alarm.

LakeAlert Watch · No warning at Bielersee LakeAlert Watch · No warning at Bielersee LakeAlert Watch · Pas d'alerte au Bielersee LakeAlert Watch · Nessun allerta al Bielersee

Stand jetzt.

Wir aktualisieren den Status… Status wird geprüft
Canton Bern
Brienzersee
Bielersee
Thunersee
Canton Zurich
Zürichsee
Greifensee
Pfäffikersee
Sihlsee
Obersee
Canton Lucerne
Vierwaldstättersee
Sempachersee
Lake Constance · Cantonal Police Thurgau
West
Lake Constance West
Center
Lake Constance Center
East
Lake Constance East

Forecast is not alert.

Windy and MeteoSwiss tell you in the morning what the wind will do. LakeAlert vibrates your iPhone when the cantonal police turn on the warning light. Two different jobs.

Forecast app
LakeAlert
What
"This is how the wind will be."
"The light is on now."
Source
Weather model
Official warning light
Purpose
Planning before the trip
Alert on the water

Sailors use both. One app for planning, one for alerting.

So funktioniert's.

  1. 1
    Lade die App.
  2. 2
    Wähle deinen See.
  3. 3
    Vergiss sie, bis sie ruft.

Wer Wind sucht, sucht auch Sturm.

Für Segler, Windsurfer, Kiter, Foiler.

Sailors
Du planst die Wende. Wir warnen vor der Front.
Windsurfers
30 Knoten Spass. 50 Knoten Klinik.
Kiters
Du startest mit Plan. Bleib mit Daten.
Foilers
Vollgas vorne. Sturm im Rücken.

Your iPhone doesn't know us.

LakeAlert collects nothing. Because it doesn't need to.

No sign-up.
No email, no account, no password.
No tracking cookies.
Kein Profiling, keine Werbe-Cookies. Anonyme Reichweitenmessung via Cloudflare — keine Cookies, keine personenbezogenen Daten.
No ads.
Never, nowhere. Not even native.

Kostenlos. Privat finanziert. Bleibt so.

Legally binding is the warning light at the lake.

Wir melden in Sekunden, nicht in Minuten. Nie garantiert. Wenn du die Leuchte direkt sehen kannst, zählt der Sichtbefund.

The system does not replace seamanship. It is an additional channel. Not the only one.

Lade die App.

Ignoriere sie, bis sie sich meldet.

Laden im App Store