Figure 1 depicts the surface observations at 2:00 am EDT, which shows a cold front moving across the northeast United States. This front became the focus for intense thunderstorms in the afternoon hours of July 11th, which ultimately led to this F1 tornado.
The Bedford, MA F2 tornado of July 11, 1958 impacted Middlesex County in Massachusetts. According to NOAA (2019), the F2 tornado caused no fatalities or injuries, but caused $250 thousand dollars in property damage. The tornado touched down in Middlesex County near Carlisle Road at 6:00 pm EDT. The tornado travelled for 1.5 miles and had a maximum width of 17 yards.
Sources
NOAA Central Library. (2019). U.S. Daily Weather Maps. Friday July 11, 1958 [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/