Supercell over Laramie
WRDS/SCO may be working remotely so there could be a slight delay returning phone calls. Please email wrds@uwyo.edu if you are in need of information and we will respond as soon as possible

Wyoming Snow Precipitation Update

United States Natural Resources Water and Climate Center Department of Conservation Portland, Oregon Agriculture Service S N O W - P R E C I P I T A T I O N U P D A T E Based on Mountain Data from NRCS SNOTEL Sites As of MONDAY: APRIL 15 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 18.8 13.2 142 23.4 21.3 110 Black Bear 8170 45.7 36.6 125 47.2 39.0 121 Blind Bull Sum 8650 25.8 23.8 108 20.1 19.8 102 Cottonwood Creek 7670 22.7 19.8 115 27.6 25.2 110 East Rim Divide 7930 10.8 10.0 108 12.6 11.9 106 Grand Targhee 9260 46.6 41.0 114 33.0 32.0 103 Granite Creek 6770 17.8 12.3 145 21.8 19.9 110 Grassy Lake 7265 35.0 31.5 111 39.9 36.6 109 Gros Ventre Summit 8750 8.0 13.0 62 13.0 13.3 98 Gunsight Pass 9820 14.2 13.4 106 16.6 14.3 116 Lewis Lake Divide 7850 -M 30.2 * 40.8 36.1 113 Phillips Bench 8200 31.1 26.0 120 34.2 28.6 120 Salt River Summit 7640 15.0 11.2 134 17.8 17.0 105 Snake River Station 6920 19.0 12.8 148 27.1 22.9 118 Spring Creek Divide 9000 24.6 23.2 106 25.0 24.3 103 Thumb Divide 7980 20.5 14.4 142 20.7 19.0 109 Togwotee Pass 9580 25.6 23.0 111 26.6 24.9 107 Two Ocean Plateau 9240 33.7 27.2 124 28.1 27.9 101 Willow Creek 8080 33.8 26.7 127 37.6 34.4 109 Younts Peak 8350 -M 14.7 * -M 16.2 * ----- ----- Basin Index (%) 118 110 MADISON-GALLATIN Black Bear 8170 45.7 36.6 125 47.2 39.0 121 Canyon 7870 14.7 12.4 119 17.6 16.6 106 Madison Plateau 7750 32.1 22.5 143 30.2 26.8 113 West Yellowstone 6700 11.0 8.2 134 18.5 14.4 128 Whiskey Creek 6800 19.6 14.8 132 22.9 20.6 111 ----- ----- Basin Index (%) 130 116 YELLOWSTONE Beartooth Lake 9360 22.9 22.4 102 20.9 20.3 103 Burnt Mtn 5880 6.8 .2 3400* 14.6 13.5 108 Canyon 7870 14.7 12.4 119 17.6 16.6 106 Cole Creek 7850 18.1 15.6 116 -M 14.0 * Evening Star 9200 28.1 24.7 114 30.6 28.1 109 Fisher Creek 9100 35.7 31.9 112 38.0 32.6 117 Northeast Entrance 7350 9.5 8.0 119 15.6 12.6 124 Parker Peak 9400 25.7 20.5 125 25.5 18.2 140 Sylvan Lake 8420 22.8 20.0 114 29.3 22.9 128 Thumb Divide 7980 20.5 14.4 142 20.7 19.0 109 Two Ocean Plateau 9240 33.7 27.2 124 28.1 27.9 101 White Mill 8700 26.5 23.5 113 22.4 24.4 92 Wolverine 7650 10.2 8.6 119 13.4 12.6 106 Younts Peak 8350 -M 14.7 * -M 16.2 * ----- ----- Basin Index (%) 120 111 WIND RIVER Burroughs Creek 8750 13.6 -M * 14.5 -M * Castle Creek 8400 3.8 -M * 6.9 -M * Cold Springs 9630 7.7 5.8 133 8.6 10.4 83 Deer Park 9700 17.7 16.0 111 19.4 20.7 94 Hobbs Park 10100 17.1 14.9 115 13.7 14.2 96 Kirwin 9550 11.2 9.9 113 11.9 12.0 99 Little Warm 9370 10.3 10.2 101 10.1 13.4 75 Owl Creek 8975 4.7 5.1 92 7.2 6.4 112 South Pass 9040 16.0 15.8 101 13.1 18.0 73 St. Lawrence Alt 8620 -M 6.4 * -M 9.4 * Togwotee Pass 9580 25.6 23.0 111 26.6 24.9 107 Townsend Creek 8700 11.4 10.0 114 12.7 12.8 99 ----- ----- Basin Index (%) 110 93 BIGHORN BASIN Bald Mtn. 9380 17.0 19.4 88 12.9 17.7 73 Bear Trap Meadow 8200 5.5 4.4 125 7.4 9.1 81 Bone Springs Div 9350 12.6 16.8 75 11.8 16.2 73 Grave Springs 8550 8.4 9.6 88 9.9 11.2 88 Kirwin 9550 11.2 9.9 113 11.9 12.0 99 Marquette 8760 8.1 -M * 10.0 -M * Middle Powder 7760 8.2 12.4 66 8.4 12.3 68 Owl Creek 8975 4.7 5.1 92 7.2 6.4 112 Powder River Pass 9480 9.9 10.2 97 -M 13.2 * Shell Creek 9580 13.4 15.5 86 11.0 14.3 77 Timber Creek 7950 3.2 5.2 62 6.9 7.9 87 ----- ----- Basin Index (%) 87 82 SHOSHONE RIVER Blackwater 9780 26.6 23.7 112 26.7 21.3 125 Evening Star 9200 28.1 24.7 114 30.6 28.1 109 Marquette 8760 8.1 -M * 10.0 -M * Sylvan Lake 8420 22.8 20.0 114 29.3 22.9 128 Sylvan Road 7120 9.3 10.3 90 16.9 17.1 99 Younts Peak 8350 -M 14.7 * -M 16.2 * ----- ----- Basin Index (%) 110 116 POWDER RIVER Bear Trap Meadow 8200 5.5 4.4 125 7.4 9.1 81 Cloud Peak Reservoir 9860 12.1 15.4 79 11.5 14.2 81 Grave Springs 8550 8.4 9.6 88 9.9 11.2 88 Hansen Sawmill 8360 5.9 5.9 100 8.3 9.1 91 Middle Powder 7760 8.2 12.4 66 8.4 12.3 68 Powder River Pass 9480 9.9 10.2 97 -M 13.2 * Soldier Park 8720 3.6 -M * 7.5 -M * ----- ----- Basin Index (%) 86 81 TONGUE RIVER Big Goose 7990 8.3 9.7 86 10.4 12.1 86 Bone Springs Div 9350 12.6 16.8 75 11.8 16.2 73 Burgess Junction 7880 8.9 12.1 74 9.1 13.0 70 Dome Lake 8880 7.8 12.0 65 8.8 14.3 62 Little Goose 8870 9.6 -M * 8.3 -M * Sucker Creek 8880 10.9 12.6 87 10.3 15.1 68 Tie Creek 6870 4.0 4.8 83 11.1 12.3 90 ----- ----- Basin Index (%) 77 74 BELLE FOURCHE Blind Park 6890 3.8 5.1 75 8.0 12.4 65 Cole Canyon 5910 5.5 3.2 172 12.9 10.0 129 ----- ----- Basin Index (%) 112 93 CHEYENNE RIVER BASIN Blind Park 6890 3.8 5.1 75 8.0 12.4 65 North Rapid Creek 6130 4.6 5.5 84 7.6 10.4 73 ----- ----- Basin Index (%) 79 68 UPPER N. PLATTE Arapaho Ridge 10960 26.5 21.6 123 27.1 23.7 114 Blackhall Mtn 9820 34.2 -M * 35.1 -M * Columbine 9160 27.5 21.8 126 29.8 26.4 113 Divide Peak 8880 22.2 20.0 111 24.3 22.2 109 Joe Wright 10120 23.4 22.1 106 31.0 26.9 115 Laprele Creek 8375 13.2 9.0 147 15.0 13.2 114 Med Bow 10500 39.4 -M * 35.4 -M * Never Summer 10280 23.0 20.5 112 19.8 -M * North French Creek 10130 30.5 31.8 96 31.3 27.8 113 Old Battle 10000 37.9 32.2 118 37.6 36.1 104 Rawah 9020 12.7 9.6 132 18.1 15.0 121 Sage Creek Basin 7850 18.9 8.8 215 16.8 15.0 112 Sand Lake 10050 30.6 30.4 101 25.3 25.9 98 South Brush Creek 8440 9.5 10.9 87 12.7 15.9 80 Tower 10500 53.2 47.4 112 45.6 41.1 111 Webber Springs 9250 27.1 23.3 116 32.5 27.7 117 Whiskey Park 8950 31.9 27.0 118 33.7 28.8 117 Willow Creek Pass 9540 16.9 12.7 133 18.3 14.0 131 Zirkel 9340 34.1 23.9 143 39.2 29.2 134 ----- ----- Basin Index (%) 118 113 SWEETWATER Deer Park 9700 17.7 16.0 111 19.4 20.7 94 Larsen Creek 9000 10.1 10.8 94 15.2 -M * South Pass 9040 16.0 15.8 101 13.1 18.0 73 ----- ----- Basin Index (%) 103 84 LOWER N. PLATTE Casper Mtn. 7900 16.2 14.4 112 13.3 16.0 83 Laprele Creek 8375 13.2 9.0 147 15.0 13.2 114 Reno Hill 8400 17.3 14.1 123 18.1 16.5 110 Windy Peak 7900 10.3 7.4 139 12.2 11.2 109 ----- ----- Basin Index (%) 127 103 LARAMIE RIVER Brooklyn Lake 10240 25.3 22.2 114 26.7 22.1 121 Cinnabar Park 9574 21.1 21.0 100 24.5 24.9 98 Crow Creek 8330 5.1 4.1 124 11.4 11.5 99 Deadman Hill 10220 22.4 16.5 136 20.9 18.2 115 Rawah 9020 12.7 9.6 132 18.1 15.0 121 Roach 9700 18.3 16.5 111 22.6 20.0 113 Windy Peak 7900 10.3 7.4 139 12.2 11.2 109 ----- ----- Basin Index (%) 118 111 S. PLATTE Black Mountain 8920 12.8 -M * 14.3 -M * Crow Creek 8330 5.1 4.1 124 11.4 11.5 99 Deadman Hill 10220 22.4 16.5 136 20.9 18.2 115 ----- ----- Basin Index (%) 133 109 LITTLE SNAKE RIVER Battle Mountain 7440 9.9 6.7 148 17.1 15.6 110 Divide Peak 8880 22.2 20.0 111 24.3 22.2 109 Elk River 8700 18.8 17.2 109 20.5 20.7 99 Little Snake River 8915 29.3 25.8 114 39.0 30.7 127 Old Battle 10000 37.9 32.2 118 37.6 36.1 104 Sage Creek Basin 7850 18.9 8.8 215 16.8 15.0 112 Sandstone RS 8150 14.7 11.8 125 19.1 19.0 101 Whiskey Park 8950 31.9 27.0 118 33.7 28.8 117 ----- ----- Basin Index (%) 123 111 UPPER GREEN RIVER Big Sandy Opening 9080 14.3 12.9 111 15.2 13.7 111 Blind Bull Sum 8650 25.8 23.8 108 20.1 19.8 102 East Rim Divide 7930 10.8 10.0 108 12.6 11.9 106 Elkhart Park G.S. 9400 14.1 12.0 118 14.5 13.7 106 Gros Ventre Summit 8750 8.0 13.0 62 13.0 13.3 98 Gunsight Pass 9820 14.2 13.4 106 16.6 14.3 116 Indian Creek 9425 24.6 23.9 103 19.5 23.1 84 Kendall R.S. 7740 10.5 9.8 107 12.4 14.4 86 Loomis Park 8240 16.1 13.6 118 17.7 17.6 101 New Fork Lake 8340 10.4 9.6 108 10.1 11.0 92 Pocket Creek 9360 15.3 -M * 15.9 -M * Snider Basin 8060 11.0 11.6 95 13.8 14.5 95 Spring Creek Divide 9000 24.6 23.2 106 25.0 24.3 103 Triple Peak 8500 25.6 19.7 130 26.9 25.7 105 ----- ----- Basin Index (%) 107 100 LOWER GREEN RIVER Blacks Fork Jct 8869 9.7 -M * 14.4 -M * Buck Pasture 9632 16.6 -M * 21.1 -M * EF Blacks Fork GS 9360 13.4 -M * 13.0 -M * Hams Fork 7840 9.7 8.6 113 12.2 11.7 104 Hewinta 9500 13.0 9.7 134 16.7 14.5 115 Hickerson Park 9122 10.3 6.6 156 13.0 10.7 121 Hole-in-Rock 9168 7.6 6.8 112 11.9 10.2 117 Indian Creek 9425 24.6 23.9 103 19.5 23.1 84 Kelley R.S. 8180 15.6 13.7 114 16.9 18.5 91 Spirit Lk 10235 17.6 -M * 18.5 -M * Steel Creek Park 10158 -M 16.1 * 20.6 17.2 120 ----- ----- Basin Index (%) 117 105 UPPER BEAR RIVER Bear River RS 8777 10.9 -M * 16.8 -M * Bug Lake 7987 24.9 19.0 131 24.7 19.9 124 Burts Miller Ranch 8000 5.7 -M * 9.8 -M * Chalk Creek #1 9171 28.3 24.9 114 31.8 26.1 122 Hayden Fork 9130 17.1 13.9 123 25.1 21.8 115 Kelley R.S. 8180 15.6 13.7 114 16.9 18.5 91 Lily Lake 9133 14.5 12.4 117 17.9 17.8 101 Monte Cristo 8932 35.7 27.8 128 33.0 26.8 123 Salt River Summit 7640 15.0 11.2 134 17.8 17.0 105 Spring Creek Divide 9000 24.6 23.2 106 25.0 24.3 103 ----- ----- Basin Index (%) 120 112 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100. ---------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.