The National Weather Service Building a Weather-Ready Nation

Shelf cloud over Green River courtesy of Eric Nielsen	Star Valley – Photo Courtesy of Dave Hunt

A large storm system moved across the western United States this weekend, depositing a significant amount of rain as it slowly moved northeast. Rain began affecting our western border with Idaho as early as Friday, with rain eventually moving east of the Divide on Saturday with waves of rain and embedded thunderstorms moving across the region through Monday.

Click Loop To Enlarge The GOES-W Water Vapor Satellite Loop (Above) showed a large upper level low pressure system spinning atop much of the western United States throughout the weekend before it finally lifted out on Monday.

Click Image To Enlarge Click here to see the full set of observed rainfall totals    All stations listed below accumulated more than one inch of rain over the 72 hour period ending Monday night (Sept 29th). 72 Hour Rainfall Totals 1 Inch or Greater Location County, ST Elev 72 Hr Pcpn (in.) N. FORK LITTLE WIND RIVER Fremont, WY 6120 4.09 PINE CREEK ABOVE FREMONT LAKE Sublette, WY 7480 3.87 21 W BIG PINEY Sublette, WY 8200 3.30 PORTABLE RAWS Sublette, WY 8503 3.02 15 NE COKEVILLE Lincoln, WY 8470 2.92 13 E COKEVILLE Lincoln, WY 7460 2.82 KEMMERER Lincoln, WY 6980 2.79 FOSSIL BUTTE Lincoln, WY 6780 2.78 PINEDALE Sublette, WY 7310 2.74 7 NE PINEDALE Sublette, WY 8530 2.59 9 E BIG PINEY Sublette, WY 6803 2.54 10 NNW DANIEL Sublette, WY 7470 2.47 BONDURANT Sublette, WY 6687 2.47 2 NW BONDURANT Sublette, WY 6726 2.45 BONDURANT Sublette, WY 6650 2.41 SMITHS FORK NEAR BORDER                                                                                         Lincoln, WY 6650 2.38 AFTON Lincoln, WY 6267 2.12 PORTABLE RAWS Sublette, WY 8378 2.07 10 W FORT WASHAKIE Fremont, WY 9235 1.96 COKEVILLE Lincoln, WY 6191 1.96 MIDDLE FORK POPO AGIE RIVER Fremont, WY 6555 1.92 BOULDER LAKE Sublette, WY 7350 1.91 NORTH FORK POPO AGIE RIVER Fremont, WY 5760 1.83 N WIND RIVER MTS Fremont, WY 8833 1.79 THAYNE Lincoln, WY 5928 1.72 CROWHEART Fremont, WY 6099 1.71 11 N DUBOIS Fremont, WY 8750 1.70 13 W CROWHEART Fremont, WY 9630 1.70 LANDER AIRPORT Fremont, WY 5586 1.61 JACKSON Teton, WY 6240 1.60 14 WSW MAMMOTH Park, WY 7900 1.60 11 W CROWHEART Fremont, WY 6520 1.57 10 SE CROWHEART Fremont, WY 5654 1.57 3 NW ETNA Lincoln, WY 5692 1.55 9 SW LANDER Fremont, WY 7085 1.54 8 NNE MORAN JUNCTION Teton, WY 7030 1.50 KIRWIN SNOTEL Park, WY 9550 1.50 7 NW LANDER Fremont, WY 5797 1.47 6 S ALPINE Lincoln, WY 5676 1.40 4 SW LANDER Fremont, WY 5807 1.40 15 SE ROCK SPRINGS Sweetwater, WY 7550 1.37 ETNA Lincoln, WY 5823 1.37 ROCK SPRINGS Sweetwater, WY 6270 1.36 4 NE THAYNE Lincoln, WY 6217 1.35 EXTREME SW YELLOWSTONE Teton, WY 6400 1.35 HOBACK JUNCTION Teton, WY 5928 1.29 JACKSON Teton, WY 6247 1.27 4 N MOOSE Teton, WY 6730 1.27 MARBLETON Sublette, WY 6896 1.25 ALTA Teton, WY 6430 1.24 3 E FORT WASHAKIE Fremont, WY 5528 1.21 GARDNER RIVER NR MAMMOTH, YELLOWSTONE NATIONAL PARK Park, MT 5624 1.20 3 SSW JACKSON Teton, WY 6158 1.18 5 S OF SOUTH ENTRANCE YNP Teton, WY 7020 1.18 ROCK SPRINGS AIRPORT Sweetwater, WY 6760 1.13 MAMMOTH Park, WY 6300 1.13 10 W DUBOIS Fremont, WY 8432 1.02 OLD FAITHFUL Teton, WY 7320 1.02 15 NNE GRAND TARGHEE Teton, WY 6830 1.00 15 ESE POINT OF ROCKS Sweetwater, WY 6720 0.99 9 N KEMMERER Lincoln, WY 7129 0.99