NSC's Weather Station & Lake Cam
Water level1: 19 cm below chart datum.
Wind at NSC2: W at 2.4 kn, gusting to 7.
Ottawa Current3: Mostly cloudy, 17°C. Wind: WNW at 5 kn. Pressure: 100.6 kPa, falling. Relative humidity: 97%. Visibility: 9 nm.
Ottawa Tonight3: Cloudy. 60% chance of showers this evening. Fog patches developing overnight. Low 15.
- Current & 6-Hour, 24-Hour and 7-Day Histories — Charts and plots of our Weather Station's data.
- BYC's "Lake Cam" — Real-time view of Lac Deschênes, from Britannia Yacht Club.
Conditions & Forecasts
Wind
- Sailflow Winds — For Lac Deschênes using NSC & BYC sensors data
- VentuSky — Graphical area wind, temperature, and precipitation centred on NSC
- Wind Finder — Wind and weather forecast for NSC
- Wind Guru — Numerical wind and weather forecast for the Ottawa River
- Windy.com — Graphical wind forecast for NSC and area
Weather
- 5-days & Current — Environment Canada (EC) weather for Ottawa North
- 7-days & Current — The Weather Network (TWN) forecast for Ottawa
- Lightning — Environment Canada (EC) Ontario lightning danger map
- Ottawa & Nearby Places — Accuweather forecast
Water Levels
- Ottawa River Water Level — Past 48 hours for station 02KF005 (Britannia4)
- Water Levels — Additional links and info for water levels on Lac Deschênes
Radar & Satellite Images
- Canadian Weather Radar — Environment Canada scalable map
- Radar - Ottawa Centered — Accuweather Interactive Radar
- Satellite & Radar — TWN Interactive Weather Maps
- Satellite, Various — NOAA Satellite Images and Animation
Miscellaneous
- Air Quality Health Index – The most recent forecast values for Ottawa
- Hurricane & Storm Tracking — Current and predicted tracks
- Smoke Prediction for Ontario — 72h Hourly Maps at Ground Level
Disclaimer
NSC does not warrant the quality, accuracy, or completeness of any data made accessible through this page. The above information and links are provided on an "AS IS" basis without warranty or condition of any nature.
1 The water level is determined by subtracting the latest data from the Environment Canada Weather Office's Data File for Britannia Station 4 from the 57.9 m datum at Britannia Station. This data is updated hourly from April to October and every four hours from November to March.
Note to racers: The BYC gates must remain in place until the water level drops below ~59.0m or less than 1.1m above the datum.
2 Weather data is continuously collected every five minutes by the NSC-owned Davis Vantage Pro2 Weather Station, located at the harbour entrance. The data is then converted from Imperial to International System of Units.
Please note that: (1) The wind conditions at NSC may differ from those at other locations on the lake and at the airport, and (2) If the application determines that no new data is available, it will display "No current data".
3 Current and forecast values at the Ottawa Airport are downloaded from the Environment Canada Website four times an hour. Wind speeds are converted from kilometers per hour to knots (kn), and distances are converted from kilometers to nautical miles (nm).
4 It's worth noting that the Britannia Station water level and flow metering Station is actually located at NSC.
ISO Abbreviations: nm stands for nautical mile(s) where 1 nm = 1.85 km, and kn stands for knot(s) where 1 kn = 1 nm/h.
2025: Sep 22, DS: updated lightning URL. Jun 10, DS: used ChatGPT to improve the Notes after the Disclaimer. Jun 04, DS: Added the word "Station" after Britannia for water metering text. May 23, DS: added the Notes header. May 06, DS: changed ISO Abbreviations text. 2024: Dec 11, DS: changed text to say that Ottawa AP citypage file is extracted every 15 minutes, not 5. EC only updates the file a few times per hour. Nov 09, DS: Updated windy.com URL to expand user options. Sep 06, DS: updated accuweather URL, commented our broken JS Marshal link. Aug 27, DS: updated Satellite and Radar URL for Weather Network. Aug 26, DS: updated EC URL to https://weather.gc.ca/en/location/index.html?coords=45.403,-75.687. JUl 04, DS: Moved Disclaimer up as its own section with H2 title. Jun 23, DS: made sure all non-NSC links open in a new tab. May 13, DG: Changed BYC lake cam link from https://video.nest.com/embedded/live/ZQk9CR7pTg?autoplay=1 to https://byc.ca/weather-webcam-2/ May 10, DS: updated EV Hydrographic CSV file URL. Added text about units conversions. Jan 12, DS: added details to text: km/h to km and km to nm. Sept 14, DS: Updated Network Channel URL after W.N. update. Sept 9, DS: added link in note 4. Aug 28, DS: fixed double href in Radar - Ottawa Centered link. Aug 13, DS: made all external links open in a new tab. Centered bullets with lighthouse image. Removed triple href in fireworks URL. Jun 12: SF: Removed rounded. Jun 08: DS: added 72 hours of prediction smoke at ground level. Jun 06: new Air Quality Health Index link. Apr 06 - new EC Radar link. Mar 15, DS: new Kadence style. May 29, SF: Added photo and grouped conditions &forecasts.