Manholes Spout Fire in Downtown Omaha Electrical fire causes underground explosions By Neal Colgrass, Newser Staff Posted Jan 28, 2013 7:03 PM CST 35 comments Comments Manhole covers blow their lids during a series of explosions in downtown Omaha last night. (YouTube) (Newser) – Talk about pyrotechnics: Several manhole covers in downtown Omaha popped their lids and spouted fire last night after an electrical blaze caused underground explosions, Gawker reports. What's more, a local resident somehow snapped a photo of the moment. Omaha public workers were still trying to restore power downtown this morning, when about 100 people had no electricity. At its worst, the blackout left nearly 3,000 customers in the dark, reports WOWT-TV.