Mantyranta, MA EF0 Tornado of June 23, 2015

Figure 1 depicts the surface observations at 5:00 pm EDT, which shows a warm front across New Hampshire and a cold front slicing through the northeastern United States. Conditions became favorable for the development of thunderstorms across Massachusetts, which ultimately led to this tornado.

Figure 1. Surface analysis at 21Z on June 23, 2015 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centers (WPC, 2017)

The Mantyranta, MA EF0 tornado of June 23, 2015 impacted Worcester County in Massachusetts. According to NOAA (2020), the EF0 tornado caused no fatalities or injuries, but caused $25 thousand dollars in property damage. The tornado touched down near West Princeton Road at 7:24 pm EDT. The tornado travelled for 0.52 miles and had a maximum width of 75 yards.

Figure 2. Episode narrative for June 23, 2015 (NOAA NCEI, 2020).


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 21Z Tue Jun 23 2015. Retrieved from:

NOAA National Centers for Environmental Information (2020). Storm Events Database. Retrieved from:

National Centers for Environmental Information reports:

A tornado touched down off of West Princeton Road near Wachusett Mountain. It damaged about a dozen trees and sheared off several tree tops. This damage was further supported by an eyewitness account of the tornado and rotation on the radar.