Class VI is the highest level possible and extreme caution should be taken to prevent the risk of wildfire.
What does a Class VI Extreme danger mean?
"The higher the spread index value, the faster the fire will move across the ground especially in fine fuels such as grasses or dry leaves. Under these conditions a fire can spread very quickly, and is why spring grass fires can be extremely dangerous. The higher the calculated build-up number, the longer the firefighter can expect to remain on scene to do extensive mop-up. This generally happens during summer drought conditions and usually requires the addition of wetting agents to help water penetrate deeper into the duff layer in order to extinguish the fire." - RI DEM