Not until last Monday. Evidently, the term didn’t come into use until 2010, after a ‘derecho’ in 2009 & the weather service needed to call it something. Or so I’ve heard.
See ProtectOurFreedom’s #19. Here in MN, I guess the NWS has been calling these storms derechos since at least 2005. Here’s the weather page for my area today - http://www.crh.noaa.gov/wxstory.php?site=mpx