From the Spaceflight Meteorology Group:
The Tornado Watch issued earlier this morning for JSC has been cancelled. At 10:01 AM the heaviest rainfall and stronger part of the squall line was east of JSC moving away. Moderate to light rainfall will continue for the next 1 to 2 hours followed by some rapid clearing and breezy west winds this afternoon.
Maximum gust at JSC today was 44 mph when the line of storms arrived around 9:30 AM. As of 10:03 AM 0.54 inches of rain has fallen at JSC Building 30. NASA Ellington has recorded 0.90 inches so far as well.