get out, go! get in your cars! reporter: the black forest fire south of denver multiplying in size in just hours and engulfing thousands of acres in its path. massive flames consuming dozens of buildings in this heavily wooded area. we are still at zero containment. the fire is still pretty well scattered. it s not just one wall of fire. reporter: firefighters say strong winds and record high temperatures are fueling the fast-moving fires. with nightfall, cooler air, hopefully the winds have died down. reporter: the black forest fires one of at least five fires ablaze across colorado. some 150 firefighters and the national guard aiding in the battle. we have other firefighters draining resources but i could not be more pleased with the support we received. reporter: this area is no stranger to devastating fires. last summer the waldo canyon
are forcing thousands to get out of harm s way. get out, get out, go! get in your cars now! reporter: the black forest fire south of denver multiplying in size in just hours and engulfing thousands of acres in its path. the thick billowing smoke visible for miles. we are still at zero containment. the fire is still pretty well scattered. it s not just one wall of fire. reporter: firefighters say strong winds and record high temperatures are fueling the fast moving fires. with nightfall a little bit cooler air, hope the winds, they have certainly died down since earlier today. reporter: the black forest fires is one of five fires ablaze across colorado, some 150 firefighters and the national guard aiding in the battle. we have other fires around the state that are also draining resources but right now i could not be more pleased with the support we ve received. reporter: this area is no stranger to devastating fires.
it is. the relative humidity, 22% in denver so all of colorado notice how dry it is really in the western half and this is the early morning hours when you typically see some recovery. by the afternoon single digit relative humidity and they have the high fire danger. the low that rode over the jet stream. you saw the moisture on the east coast, all of the moisture banking up against the dry air. warm air to the south and cold air to the north, all of this producing a severe weather threat, talking about a moderate risk area today. we re talking about big cities, chicago, indianapolis, cincinnati and all of this dealing with the threat of straight line winds, strong winds, 90-mile-per-hour winds that could could be long-lived and isolated threat for tornadoes. remember what we saw a few days ago looking at a moderate risk already a day ahead of time expected in the new england area so severe weather definitely on all of our minds today. more severe weather headed
it s 5:00 in the east. in colorado, crews are battling five separate fires across the state. the most troublesome, the black forest fire near colorado springs. it s consumed 7500 acres and forced the evacuation of some 5,000 homes. fire crews get no help from mother nature this morning. conditions are extremely hot and dry with gusty winds. dan simon high on the fire lines for us in colorado springs, colorado. good morning. reporter: hi, christine, we re about a mile or two away from the fire. i can tell you it s pretty smoky out here. not the easiest conditions to breathe. i ll tell you what, this fire shows absolutely no signs of letting up. we re expecting high temperatures today and high winds so this could be a very difficult day. raging wildfires across colorado are forcing thousands to get out of harm s way. get out now! reporter: the black forest fire south of denver multiplying