Temperatures are likely to be 20 to 30 degrees or more above normal in the heat this week. (WeatherBell.com) An intense heat wave is set to bake Europe in coming days, and it could be historic, potentially shattering records across a large portion of the continent. The heat wave is expected to peak in the middle part of this week, when a swath from Spain to Poland is expected to see temperatures at least 20 to 30 degrees (11 to 17 degrees Celsius) above normal. Actual temperatures should surge to at least 95 to 105 degrees (35 to 40 degrees Celsius) over a sprawling area, with some spots hotter. Weather Underground’s Bob Henson notes that this projected heat wave is “unusually strong for so early in the summer.” Early summer heat waves can be especially lethal, as people have not yet had time to acclimatize to the higher temperatures. […]