Here is a preview of the weather you can expect this week across the country. It appears that some much needed rainfall will linger over the eastern U.S. from the middle to the latter part of this week as an anomalous upper-level low drops southward from the Great Lakes region into the Appalachians. The upper low could help form a coastal front and low pressure waves near the mid-Atlantic coast, spreading rain northward into New England Friday and Saturday. For further details, check the latest

On this day, 50 years ago an F-4 #tornado tore through Union City, Okla. With a Tornado Intercept Team in the field and a then-experimental #Doppler radar just miles away, NSSL researchers made history, capturing for the first time the full lifecycle of a tornado with Doppler radar and discovering the tornadic vortex signature (TVS). #okwx In the 50 years since Union City, NSSL has been a driver of innovation in radar technology, helping forecasters increase warning times and save lives. FEATURE

Turn your device into a powerful yet easy-to-use weather station | Clime