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>> Weatherweb Reporters << USA heat-wave Wildfires across Rockies By Garry Nicholson in Darley Dale, Derbys 20:20hrs 27/06/2012 Temperature: 22C Weather: Fine & Clear A significant heat-wave is taking hold of much of the USA with temperatures soaring to above 40C in southern states. Over the coming days, temperatures of around 100F (37.7C) are likely to spread north and east towards the Great Lakes, including cities such as Atlanta, Washington and Chicago through the weekend. You may also have seen the news footage of the dramatic wildfires which are sweeping across parts of the Rockies, with Colorado being hit particularly hard. Tens of thousands of people are being evacuated from homes in that region. Prolonged dry conditions, coupled with very high temperatures and strong winds have created these dangerous conditions, with some of the wildfires thought to be triggered by lightning strikes, although with very dry air, little rain has fallen to the ground. Looking at the weather charts, a broad ridge in the upper 500mb heights covers much of the USA, with an area of surface high pressure across south-eastern states promoting a feed of warm and humid air from the Gulf of Mexico over the coming days. Meanwhile, parts of north Florida are still being affected by flooding as a result of Tropical Storm Debby, which dumped 2 feet of rain in recent days. Below is the map of forecast temperatures for Saturday, showing the extent of heat across America. >> Comments on this story << >> Add your comments below << Your name Email (not shown in posting): Location: Your comment): Security question: What colour is the sky? (the answer is blue but remove the 's)	>> Latest comments on this musing << [Scroll down to add your comment and see what others say] >> More from Weatherweb Reporters << Lords Test Match Forecast – Eng v NZ By Garry Nicholson in Edgbaston,Birmingham 17:00 15/05/13 First home test of the summer begins Recap of April 2013 By Garry Nicholson in Darley Dale, Derbys 14:30 02/05/2013 A pretty quiet month, cold start, mainly dry in Mids & South Masters Golf Forecast By Garry Nicholson in Darley Dale, Derbys 13:00 10/04/2013 Early thunderstorm threat, but a fine weekend [click here for a full list of Weatherweb Reporters stories] >> Simon's Weather Musings << Unseasonal Europe last week - warm east By Simon Keeling in Wombourne, Staffs 09:00 20/05/13 Not so good in the north west Texas tornadoes - six feared dead By Simon Keeling in Wombourne, Staffs 16:45 16/05/2013 Granbury tornado video [click here for a full list of Simon's weather musings] >> Captain Bob's Dispatches << Seasonal Outlook By Captain Bob in Kingswinford 11:00 19/05/2013 July looks best Month Ahead By Captain Bob in Kingswinford 10:00 19/05/2013 Weather machine games [click here for a full list of Simon's weather musings] >> Around the webcams << Latest webcam pics (add yours) >> Learning channel << Summer 2013 - Latest guidance >> Forecast channel videos << Wednesday's Look Ahead Tuesday's Look Ahead Monday's Look Ahead - Still confusion reigns! Sunday's Look Ahead - Hands up! 19/5/13 Saturday's Look Ahead video - Good news?