Weather

Water level1: 0.4 m above chart datum.
Wind at NSC2: W at 4.4 kn, gusting to 9.

EC Current3: Mainly sunny, 21°C, feels like 24. Wind: SW at 9 kn. Pressure: 101.7 kPa, rising. Visibility: 13 nm. Relative humidity: 62%.
EC Today3: A mix of sun and cloud. 30% chance of showers late this afternoon. Wind southwest 11 kn becoming light this morning. Wind becoming southwest 11 gusting to 22 late this morning. High 27. UV index 7 or high.


Note: All external links open in a new window or tab.

NSC's Weather Station

Local Conditions & Wind Forecasts

Webcams

Weather Forecasts

Water Levels

Radar & Satellite Images

Miscellaneous


1 The water level, updated every hour (Apr-Oct) or 4 hours (Nov-Mar), is calculated as the difference between Britannia's 57.9 m datum and the latest value in the Environment Canada Weather Office's Data File for Britannia.
Note to racers: The BYC gates must remain in place until the water level drops below ~59.0m, or less than 1.1m above datum.

2 Wind data is collected every 5 minutes by the NSC-owned Davis Vantage Pro2 Weather Station, mounted on the lighthouse at the harbour entrance. Note that the wind at NSC is likely to differ from that at the airport.

3 The current and forecast values at the Ottawa Airport are extracted every 5 minutes from the Ottawa (Kanata - Orléans) City Page. Wind speeds are converted to knots (kn), and distances to nautical miles (nm).

ISO Abbreviations: kn stands for knot(s), where 1 kn = 1.85 km/h, and nm stands for nautical mile(s) where 1nm = 1.85 km.


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.


Page updated: 2021-05-31.

********************** NOTE: This page must be edited as "the Boss". **********************
Update log
2021:
24 Jul: DS: removed conversion to knots part in note about wind data.
31 May: DS: changed water level update from 2 to 1 hour.
29 May: DS: Modified note #2 to include WX station location.
10 May: DS: Changed lightning map to focus on Ontario instead of the default, Canada.
27 Apr: DS: updated lightning URL.
07 Apr: DS: minor text changes to WX Station text. Local Conditions reordered alphabetically.
Moved lake cam view to own section in preparation for NSC webcam. Replaced retired
Local and Ontario Radar with Canadian Weather Radar.
04 Apr: DS: Added current wind from Weather Station in green box. Removed soon to be retired meteogram.
17 Feb: DS: Fixed various ul problems. Removed weather cycler commented out.
10 Feb: DS: Tweaked WX text.
03 Feb: DS: Changed WX Station link text to match page title.
29 Jan: HM: Added link to NSC's Weather Station page.
21 Jan: DS: updated the weather station announcement.
2020:
27 Dec: DS: Updated EC link.
21 Oct: HM: Added link to https://embed.windy.com/. Updated www.ventusky.com link with lat/long for NSC. Changed link to BYC's Lake cam to point to full-size display, and added link to BYC's Weather page. (Previous link did not display well on phone.) Commented out the link to the Weather Cycler. Removed link to Marine Weather - no longer valid. Removed link to "Weather @ BYC", as that just pointed to Sail Flow. Added "Look for a new weather station coming soon." Changed heading "Current Local Conditions" to "Local Conditions & Wind Forecasts". Changed heading "Current Weather and Forecasts" to simply "Weather Forecasts". Added heading "Water Levels", and moved links accordingly. Moved Wind Guru and Wind Finder under "Local Conditions & Wind Forecasts". Changed Wind Finder location from airport to NSC. Changed first link under Water Levels from "http://wateroffice.ec.gc.ca/report/real_time_e.html?stn=02KF005" to "https://nsc.ca/web2/weather/water-level-at-britannia/". Deleted commented reference to rbr-week.csv. Added "external" to statement "All external links open in a new window or tab."
DS: Undocumented edits: 20 October 2020; 10 May 2020; 3 May 2020
Oct 14: DS: added 10-days meteograms.
Apr 27: DS: removed link to Wind and Weather Data, and disabled display of wind in green box.
Mar 12: DS: replace weather add-on PHP snippet with

Water level1: 0.4 m above chart datum.
Wind at NSC2: W at 4.4 kn, gusting to 9.

EC Current3: Mainly sunny, 21°C, feels like 24. Wind: SW at 9 kn. Pressure: 101.7 kPa, rising. Visibility: 13 nm. Relative humidity: 62%.
EC Today3: A mix of sun and cloud. 30% chance of showers late this afternoon. Wind southwest 11 kn becoming light this morning. Wind becoming southwest 11 gusting to 22 late this morning. High 27. UV index 7 or high.

.
2019:
Jul 27: DS: added BYC weather and wind predictions.
Jun 10: DS: changed "no data available" to "no current data" in bottom note section.
Apr 26: DS: changed water level text for 4- and 2-hours schedules.
2018:
19 Oct: DS: Removed Intellicast 10-day and Wind forecast, and Radar links as they now redirect to a useless US site.
24 Jul: DS: Updated disclaimer.
14 Jun: DS: updated Weather Cyclers.
06 May: DS: Updated BYC webcam URL.
23 Apr: DS: Simplified water level expanation.
18 Mar: DS: Shortened the bottom information messages.
2017:
12 Jan: HM: Updated link for http://wateroffice.ec.gc.ca/report/real_time_e.html?stn=02KF005.
18 Nov: changed WC radar URLs for Ottawa and Ontario.
15 Jul: DS: shortened the text at the bottom of page
19 Apr: DS: added VentuSky link.
10 Mar: DS: added title tags in links of bottom page descriptions.
2016:
04 Aug: DS: replaced 'sect', 'dagger' and 'ddager' symbols with numerals.
28 Jul: DS: made the 'sect' and 'dagger' symbols superscripts.
08 Jun: DS: added lightning actity in ontario.
05 Jun: DS: added Ottawa North Forecast, extracted from xml file.
03 Jun: DS: added Airport wind using http://dd.weather.gc.ca/citypage_weather/xml/ON/s0000430_e.xml. The included top box is generated by script /cgi-bin/buildWeatherAddOns.php, executed by CRON every 10 minutes. Added the disclaimer at bottom of page.

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