Weather-Ready Nation Ambassador™ and the Weather-Ready Nation Ambassador™ logo are trademarks of the U.S. Department of Commerce, National Oceanic and Atmospheric Administration, used with permission. ©2015 AccuWeather, Inc. The Value of SkyGuard Tornado warnings are infrequent in the Northeast. However, on June 30th southeast Pennsylvania was being threatened by a tornado. The value of a site-specific SkyGuard warning was on display as it

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