Tuesday, December 1, 2009. SNOW OR NO SNOW? The images above are two different computer models showing the precipitation output for tomorrow evening. They clearly differ and mean snow vs no snow for the Ozarks. If the top model is correct then accumulating snow is possible, mainly on grassy surfaces. Most places will see little or no accumulation, but if a heavy band sets up then a couple inches is possible.

Planet Science Xtra - WeatherLabs. Weather Labs has two challenges for you. Can you help us check the accuracy of the weather forecast? We are calling on all school scientists to get out some kit and start checking the forecasts in their local area. Whatever you find will help weathermen to improve the science of forecasting. Can you become a weather broadcaster? Weather Labs is CREST Star accredited! Erin, weather forecaster.

Weather data collected from the most reliable and local sources to bring you the most accurate weather information possible. Predicting weather is tricky business. Singapore has been known to get flooded. Now you will know when, well in advance. Follow us on Twitter! .

Pressure data to the nearest 0. 1 hPa are recorded at a 10-minute interval, that are more precise and frequent than before. Please check the Current Weather page.