On Tuesday 3 / 9, National Weather Service storm survey teams explored the damage path of a tornado that struck near Hammon, OK late on Monday 3 / 8. The teams rated the twister an EF-2. Here is an excerpt of the National Weather Service's report:
A relatively long tracked tornado touched down in a rural area to the southwest of Hammon around 5:20pm CST, and then tracked to the northeast towards the town of Hammon. This tornado was on the ground for around 40 minutes, moving mainly over rural areas. Near the end of the tornado track, the tornado clipped the southeastern edge of Hammon, destroying several barns, and damaging several homes. The tornado finally dissipated to the northeast of Hammon. The EF-2 rating is based primarily on the damage on the southeastern side of Hammon - including the damage to a home and a county barn. Remember, this rating is preliminary, so the final rating and information about the tornado is subject to change if more information becomes available.
Find the full report here. Also, view some of my recent National Weather Highlights focusing on the severe weather from the same system that generated the Hammon tornado: Gusty thunderstorm blasts, damages Lubbock, TX area and Hail covers the ground in Yuma, AZ.