FIRE WEATHER WATCH THURSDAY AFTERNOON AND EVENING FOR PORTIONS OF WESTERN AND CENTRAL NORTH DAKOTA. .Critical fire weather conditions are possible Thursday afternoon and evening for portions of western and central North Dakota. Relative humidity values are forecast to fall to as low as 15 percent, combined with south-southwesterly winds sustained as high as 25 mph and gusting to near 40 mph. In addition, there is a low chance for isolated dry thunderstorms late in the afternoon and evening across the watch area. Any fires that ignite could spread rapidly and become difficult to control. * WINDS. South-southwest to 25 mph with gusts to near 40 mph. * RELATIVE HUMIDITY. As low as 15 percent. * AFFECTED AREA. Portions of western and central North Dakota. * THUNDERSTORMS. Isolated dry thunderstorms possible. * IMPACTS. Any fires that develop will spread rapidly. Lightning may cause fire starts. Gusty outflow winds may cause fires to spread erratically.