Heavy rain is moving through southern Minnesota Tuesday morning, and another wave is expected to develop this afternoon.
There is a threat of severe weather on Tuesday afternoon, albeit not a significant one, but strong to severe storms are possible in southwest and south-central Minnesota, according to the National Weather Service.
It says large hail and damaging winds in addition to a tornado or two can't be ruled out.
NOAA's Storm Prediction Center has south-central Minnesota, including Mankato, in a very slight, 2 percent tornado risk.
"Overall risk for severe storms appears limited, and so will maintain only marginal risk for hail/damaging winds – and perhaps a brief tornado or two – with one or two of the stronger storms which may evolve during the afternoon," the SPC says.
Any tornado that develops Tuesday would 2 months later than the first tornado in Minnesota last year. A record was set in the state was set when a twister touched down near Zimmerman on March 6, 2017.
According to the DNR, 77 percent of all tornadoes in Minnesota happen in May (15 percent), June (37 percent) and July (25 percent).
On average, Minnesota sees four tornadoes in May.