Figure 1 depicts the surface observations at 8:00 am EDT, which shows a cold front moving across the Great Lakes, which brought southerly winds to Massachusetts. This front became the focus for thunderstorms across western Massachusetts in the evening hours of July 11th, which ultimately led to this tornado.
The North Adams, MA F1 tornado of July 11, 1984 impacted Berkshire County in Massachusetts. According to NOAA (2019), the F1 tornado caused no fatalities or injuries, but caused $25 thousand dollars in property damage. The tornado touched down near Gallup Street at 7:40 pm EDT. The tornado travelled for 0.5 miles and had a maximum width of 50 yards.
NOAA Central Library. (2020). U.S. Daily Weather Maps. Wednesday July 11, 1984 [PDF]. Retrieved from https://library.noaa.gov/Collections/Digital-Collections/US-Daily-Weather-Maps
NOAA National Centers for Environmental Information (2019). Storm Events Database. Retrieved from: https://www.ncdc.noaa.gov/stormevents/