The Weather Blog

November 20, 2009|By Frank Roylance | Frank Roylance,frank.roylance@baltsun.com

Don Gansauer in Canton wonders: "How accurate are local TV forecasts when they show the expected radar precipitation scans of the next 36 hours?" Those rain predictions are generated by computers, based on current conditions and past events under similar conditions. They're like kids: You're pretty sure where they are now, and how they usually behave. But 36 hours from now? Not so much.

Up-to-the-minute local data and radar at marylandweather.com

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