![mammatus_cloud](thumbs/2006/0527jd44.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd43.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd42.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd41.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd40.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd39.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd38.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd37.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd36.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd35.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd34.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd33.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd32.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd31.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd30.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd29.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd28.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd27.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd26.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd21.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd20.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd18.jpg) S of Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0527jd11.jpg) Bismark, North Dakota, USA |
![mammatus_cloud](thumbs/2006/0525jd39.jpg) N of Woodward, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0525jd38.jpg) N of Woodward, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0525jd37.jpg) N of Woodward, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0525jd36.jpg) N of Woodward, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0525jd35.jpg) N of Woodward, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0525jd34.jpg) N of Woodward, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0525jd33.jpg) N of Woodward, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0525jd32.jpg) N of Woodward, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0525jd31.jpg) N of Woodward, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0525jd30.jpg) N of Woodward, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0525jd29.jpg) N of Woodward, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0525jd28.jpg) N of Woodward, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0521jd45.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd43.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd42.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd41.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd40.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd39.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd38.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd37.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd36.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd35.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd34.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd33.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd32.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd31.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd30.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd26.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd25.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd24.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd22.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd21.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd18.jpg) N of Stinnett, Texas, USA |
![mammatus_cloud](thumbs/2006/0521jd17.jpg) S of Guymon, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0521jd16.jpg) S of Guymon, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0521jd15.jpg) S of Guymon, Oklahoma, USA |
![mammatus_cloud](thumbs/2006/0521jd14.jpg) S of Guymon, Oklahoma, USA |