Wind speeds in Harrisburg, PA on Wednesday, March 28, 1979, the day of the Three Mile Island disaster:
|Wind Speed||8 mph (SSE)|
|Max Wind Speed||17 mph|
|Max Gust Speed||–|
Averages throughout the day:
Charts and Weather History Graph from WeatherUnderground.
In depth research can be found here, in the article entitled “The meteorological setting of the ‘TMI-2’ nuclear accident on 28 March 1979,” by Reinhold Steinacker and Ignaz Vergeiner, of the Departments of Meteorology and Geophysics at the University of Vienna and the University of Innsbruck, respectively: http://people.iarc.uaf.edu/~datkinson/ATM644/papers/Steinacker_2002.pdf