| Event |
Hail |
| Magnitude |
0.88 in. |
| State |
WYOMING |
| County/Area |
FREMONT |
| WFO |
RIW |
| Begin Date |
08/15/2009 18:04:00 MST-7 |
| Begin Range |
0 |
| Begin Azimuth |
NW |
| Begin Location |
RIVERTON |
| Begin Lat/Lon |
43.03/-108.39 |
| End Date |
08/15/2009 18:15:00 MST-7 |
| Deaths Direct/Indirect |
0/0 (fatality details below, when available...) |
| Injuries Direct/Indirect |
0/0 |
| Property Damage |
0.00K |
| Crop Damage |
0.00K |
| Episode Narrative |
Colder air aloft filtered into Wyoming behind an upper level low near the Montana-Canada border. This cold air coupled with afternoon surface heating helped to generate a severe thunderstorm over the central Wind River Basin. |
| Event Narrative |
Hailstones of penny to nickel size fell on the city of Riverton for a little more than 10 minutes. |
