Spaceflight Meteorology Group
The Spaceflight Meteorology Group (SMG) is a U.S. weather forecasting unit staffed by the National Weather Service (NWS) for the National Aeronautics and Space Administration (NASA) which provides pertinent information on the current and expected state of the atmosphere during human spaceflight operations. It is located at the Johnson Space Center (JSC) in Houston, Texas.
Source: Wikipedia — Spaceflight Meteorology Group (CC BY-SA 4.0)