Special Weather Statement National Weather Service Riverton WY135 PM MDT Mon Jul 15 2019 WYZ017-018-152015- Wind River Basin-Lander Foothills- 135 PM MDT Mon Jul 15 2019 ...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL FREMONT COUNTY UNTIL 215 PM MDT... At 133 PM MDT, Doppler radar was tracking a strong thunderstorm 9 miles southeast of Arapahoe, which is 11 miles south of Riverton, moving east-northeast at 20 mph. One-half inch diameter hail, brief heavy rain, and wind gusts 35 to 45 mph will be possible with this storm. This storm will remain over mainly rural areas of east central Fremont County. Motorists on Wyoming highways 135 and 136 should be prepared for heavy rain and a reduction in visibility as the storm crosses the roadway. The most up-to-date weather conditions can be found here.