Thick smoke returns to Minnesota at least through Friday

Thick smoke will expand across central Minnesota Thursday morning as it pushes south today. There may be a break from the smoke in the evening before more moves back in off and on Friday and possibly through the weekend.

Winds and 'fire clouds' feed California's largest blaze

Gusts also hindered containment efforts and the problem could get worse with the predicted arrival of pyrocumulus clouds — literally meaning “fire clouds ” — which can bring lightning and the risk of new ignitions.