allison chin char, cnn. >>> meteorologist derek van dam joins us now. it's that domino effect that allison was talking about there in the piece that is really quite extraordinary at this point. >> yeah. it doesn't help that the planet is on the heels of the warmest june ever recorded. looks like july is going to be the warmest july ever recorded on the planet. this is setting up prime conditions for wildfires across the northern hemisphere, particularly in the arctic. look at this picture. this is the satellite view of the fires and you can actually see them. zoom in to the upper right-hand corner, the screen. fires located there and you can see some of the smoke just getting swept up into a larger storm system. over in northern russia. doesn't matter where it is, it is dispersing the cloud cover all across the arctic circle. by the way, temperatures in the arctic circle are warming at a faster rate than the global average across the planet as well so that also makes the threat of wildfires even higher in this part of the world. we had the hottest june