The world of power outage maps is a very fragmented one, with what looks like dozens of designs and systems and no apparent standardization. There's no way that I know to get a USA-wide power outage map without going to all 50 states worth of utilities and piecing together incompatible maps. Some places - like Lansing, Michigan's BWL, don't have maps, making customer communication difficult.
If you can't map the whole nation, the next best thing is to count the number of outages nationwide. Here too there's no one centralized resource to make that happen. What there is, however, is a very efficient system developed by a world where making that power go back on is important - the nation's utility lineman.
There is a company, Lineman Barn, which has a Facebook page that tracks all kinds of storm-related damage and helps people who do that work connect to each other and find work. (Lineman Barn sells logo clothing for the trade.) When a storm hits, you'll see periodic updates every 6 to 24 hours of utilities that have lines down.
Established in 2003 to bring pride and recognition to the trade, Lineman Barn is the First Choice of Linemen and their families for custom shirts, hats, decals, gifts, JOBS and Lineman Safety News.
So without further ado here are the outage numbers from January 6, 2014, at noon. Note that many of these utilities have maps that you can see on the power outage maps page. By my count that's 150,192 lines out nationwide.
Indianapolis Power & Light: 28,418 ComEd: 23,221 Hydro Quebec: 20,350 Ameren-Illinois: 12,667 Entergy-Arkansas: 7,285 South Central Indiana REMC: 6,719 Southern California Edison: 5,652 Oncor: 5,632 Central Maine Power: 4,939 Duke Energy-Indiana: 4,042 AEP-Ohio: 3,144 AEP-Indiana & Michigan Power: 2,935 ConEdison: 2,719 NB Power: 2,399 Duke Energy-NC: 2,354 Nova Scotia Power: 2,177 AEP-Appalachian Power: 2,048 NYSEG: 1,943 Ameren-Missouri: 1,670 Bangor Hydro: 1,529 Hydro One: 1,516 United REMC: 1,416 Pepco: 1,275 Empire Electric District: 1,219 Dayton Power & Light: 1,010 Florida Power & Light: 1,009 AEP-Kentucky Power: 904
Image credit: Indianapolis Power and Light outage map, http://apps.iplpower.com/outages/outagemap.aspx