EF1 tornado in Harrison County, Texas

A weak EF-1 tornado with estimated maximum winds near 90 mph touched down on Blocker Road and snapped/uprooted several softwood trees. The tornado then crossed County Roads 1320, 1312, and 1202 (Old Town Road) before lifting. Multiple trees were snapped and uprooted in a convergent pattern along its path.

A closed upper low emerged out of the Rockies and into the Central Plains during the afternoon and evening hours of March 21st, with the attendant upper trough swinging east through Central Texas and Oklahoma. Strong southerly low level winds allowed for the rapid return of warm, moist, and unstable north behind a warm front which lifted north through East Texas and North Louisiana. Large scale forcing began to increase across Northern and Central Texas during the evening, with showers and thunderstorms becoming numerous across this area which spread into East Texas and North Louisiana during the late evening through the early morning hours of the 22nd. Given the extent of forcing within the unstable air mass in place, severe thunderstorms developed over North-central Texas and spread into East Texas, resulting in numerous reports of damaging winds, large hail, and even isolated tornadoes. Redevelopment of these storms continued overnight as well over the same areas of East Texas and Northwest Louisiana, which resulted in instances of flash flooding as well, as widespread rainfall amounts of 3-6 inches fell over these areas. These storms diminished during the early morning hours of the 22nd with the passage of a cold front through the region.