Hourly Water Level Data

Fisheries and Oceans Canada * Pêches et Océans Canada





Daily Water Surface Temperature Data




Random Weather Facts

Weather Terms
Severe Thunderstorm Warning - A severe thunderstorm is indicated by Doppler radar or sighted by skywarn spotters. A severe thunderstorm contains large damaging hail, 1 inch diameter or larger, and/or damaging winds of around 60 mph or greater. These warnings are issued on a county by county basis by the local Weather Forecast Office in Chicago/Romeoville.