Parts of Queensland are under a fire weather warning today as storms roar to life in the north. Temperatures reached their highest mark since January in the Northern Goldfields this afternoon, with Richmond sweltering to 42 degrees and Bourketown 40. Dry air over the state's north and west has added to the fire threat, with relative humidity dropping below 10% in Longreach, Julia Creek and Birdsville. Heating at the surface also helped to destabilise the atmosphere this afternoon, prompting a severe thunderstorm warning. Storms in the gulf country and Northern Goldfields have the potential to cause damaging winds with gusts over 90km/h. Today's fire weather warning covers the Channel Country, Central West and Northern Goldfields and Upper Flinders districts. Check weatherzone.com.au for the latest weather warnings and information.