Figure 1 depicts the surface observations at 4:00 pm, which shows a trough across Southwestern Manitoba. This trough was the focus for intense supercells across Southern Manitoba in the evening hours of July 20th, which ultimately resulted in a damaging tornado in Long Plain First Nation.
According to Public Safety Canada (2019), “an EF1 tornado touch downed in the community of Long Plain First Nation leaving a trail of destruction. The tornado that resulted from the upper-level low system that swept across the prairies uprooted trees and caused extensive property damage. In total, the tornado severely damaged 57 homes, while another 150 homes sustained moderate damages. In addition, the tornado caused damages to the Dakota Ojibway Police Service’s communications equipment. Approximately 600 residents were displaced from their homes and relocated to Winnipeg where they stayed in emergency accommodations. The storm system that accompanied the tornado downed hydro lines and poles, resulting in power outages. Over 18,000 Hydro customers (approximately 54,000 individuals) in Manitoba were without power. In Long Plain and surrounding areas, roughly 6,500 Hydro customers (approximately 19,500 individuals) lost power”.
The path of the tornado was estimated based on the limited information we could find, however it was likely a longer-track tornado than depicted, but we could not find any satellite evidence to support a longer track at this time.
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 21Z Wed Jul 20 2016. Retrieved from: https://www.wpc.ncep.noaa.gov/archives/web_pages/sfc/sfc_archive.php
Public Safety Canada. (2019). The Canadian Disaster Database. Retrieved from https://www.publicsafety.gc.ca/cnt/rsrcs/cndn-dsstr-dtbs/index-en.aspx
Environment and Climate Change Canada. (2017). Top weather events of the 20th century. Retrieved from https://ec.gc.ca/meteo-weather/default.asp?lang=En&n=6A4A3AC5-1#1921-1940