Supercell over Laramie
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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 TUESDAY: JUNE 18 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 .0 .0 * 27.1 27.4 99 Black Bear 8170 18.8 8.3 227 56.2 48.9 115 Blind Bull Sum 8650 5.2 .0 * 26.1 25.8 101 Cottonwood Creek 7670 .0 .0 * 36.2 33.4 108 East Rim Divide 7930 .0 .0 * 18.3 16.2 113 Grand Targhee 9260 30.1 32.0 94 44.6 42.7 104 Granite Creek 6770 .1 .0 * 29.2 25.5 115 Grassy Lake 7265 -M .0 * -M 46.2 * Gros Ventre Summit 8750 -M .0 * -M 18.5 * Gunsight Pass 9820 1.4 .0 * 23.0 20.3 113 Lewis Lake Divide 7850 .0 .0 * 47.5 44.8 106 Phillips Bench 8200 1.6 .0 * 40.5 36.2 112 Salt River Summit 7640 .0 .0 * 25.5 22.2 115 Snake River Station 6920 .0 .0 * 32.4 29.6 109 Spring Creek Divide 9000 2.5 .0 * 31.5 30.7 103 Thumb Divide 7980 .0 .0 * 25.3 25.5 99 Togwotee Pass 9580 10.4 11.1 94 33.0 32.9 100 Two Ocean Plateau 9240 10.5 13.6 77 33.4 36.6 91 Willow Creek 8080 .0 .0 * 47.1 45.0 105 Younts Peak 8350 -M .0 * -M 22.5 * ----- ----- Basin Index (%) 124* 106 MADISON-GALLATIN Black Bear 8170 18.8 8.3 227 56.2 48.9 115 Canyon 7870 .1 .0 * 23.0 22.7 101 Madison Plateau 7750 .1 .0 * 38.1 35.3 108 West Yellowstone 6700 .0 .0 * 23.8 20.2 118 Whiskey Creek 6800 .0 .0 * 30.8 27.8 111 ----- ----- Basin Index (%) 229* 111 YELLOWSTONE Beartooth Lake 9360 15.7 6.2 253 29.5 27.1 109 Burnt Mtn 5880 .0 .0 * 28.0 23.6 119 Canyon 7870 .1 .0 * 23.0 22.7 101 Cole Creek 7850 5.2 .0 * 26.9 23.8 113 Evening Star 9200 12.4 6.8 182 41.5 37.7 110 Fisher Creek 9100 -M 15.2 * 47.2 43.1 110 Northeast Entrance 7350 .1 .0 * 21.2 18.7 113 Parker Peak 9400 10.1 3.5 289 34.9 26.1 134 Sylvan Lake 8420 .1 .0 * 37.1 31.9 116 Thumb Divide 7980 .0 .0 * 25.3 25.5 99 Two Ocean Plateau 9240 10.5 13.6 77 33.4 36.6 91 White Mill 8700 5.0 5.8 86 29.2 33.0 88 Wolverine 7650 .0 .0 * 19.6 18.0 109 Younts Peak 8350 -M .0 * -M 22.5 * ----- ----- Basin Index (%) 165* 108 WIND RIVER Burroughs Creek 8750 .0 -M * 22.8 -M * Castle Creek 8400 .0 -M * 13.9 -M * Cold Springs 9630 .0 .0 * 17.4 16.9 103 Deer Park 9700 .1 .0 * 27.5 29.2 94 Hobbs Park 10100 6.5 .0 * 24.0 22.3 108 Kirwin 9550 .0 .0 * 21.7 18.8 115 Little Warm 9370 .0 .0 * 13.7 20.0 68 Owl Creek 8975 .0 .0 * 19.1 12.3 155 South Pass 9040 .2 .0 * 21.9 25.2 87 St. Lawrence Alt 8620 -M .0 * -M 16.0 * Togwotee Pass 9580 10.4 11.1 94 33.0 32.9 100 Townsend Creek 8700 .0 .0 * 22.2 19.7 113 ----- ----- Basin Index (%) 155* 102 BIGHORN BASIN Bald Mtn. 9380 9.8 1.8 544* 25.4 25.8 98 Bear Trap Meadow 8200 .0 .0 * 16.0 15.5 103 Bone Springs Div 9350 1.0 .0 * 21.1 24.6 86 Grave Springs 8550 .0 .0 * 18.5 17.7 105 Kirwin 9550 .0 .0 * 21.7 18.8 115 Marquette 8760 .0 -M * 25.7 -M * Middle Powder 7760 .0 .0 * 20.6 19.2 107 Owl Creek 8975 .0 .0 * 19.1 12.3 155 Powder River Pass 9480 .0 .0 * 16.8 21.0 80 Shell Creek 9580 3.5 .0 * 19.4 22.2 87 Timber Creek 7950 .1 .0 * 20.6 15.6 132 ----- ----- Basin Index (%) 800* 103 SHOSHONE RIVER Blackwater 9780 16.9 10.5 161 36.6 29.5 124 Evening Star 9200 12.4 6.8 182 41.5 37.7 110 Marquette 8760 .0 -M * 25.7 -M * Sylvan Lake 8420 .1 .0 * 37.1 31.9 116 Sylvan Road 7120 .0 .0 * 22.1 23.2 95 Younts Peak 8350 -M .0 * -M 22.5 * ----- ----- Basin Index (%) 170* 112 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * 16.0 15.5 103 Cloud Peak Reservoir 9860 2.7 .0 * 22.5 23.4 96 Grave Springs 8550 .0 .0 * 18.5 17.7 105 Hansen Sawmill 8360 .1 .0 * 19.0 16.1 118 Middle Powder 7760 .0 .0 * 20.6 19.2 107 Powder River Pass 9480 .0 .0 * 16.8 21.0 80 Soldier Park 8720 .0 -M * 16.8 -M * ----- ----- Basin Index (%) * 100 TONGUE RIVER Big Goose 7990 .2 .0 * 24.4 19.8 123 Bone Springs Div 9350 1.0 .0 * 21.1 24.6 86 Burgess Junction 7880 .0 .0 * 21.1 20.0 106 Dome Lake 8880 -M .0 * 24.1 22.3 108 Little Goose 8870 .0 -M * 17.6 -M * Sucker Creek 8880 .0 .0 * 24.6 23.8 103 Tie Creek 6870 .0 .0 * -M 21.1 * ----- ----- Basin Index (%) * 104 BELLE FOURCHE Blind Park 6890 .0 .0 * 13.4 20.8 64 Cole Canyon 5910 .0 .0 * 22.6 19.1 118 ----- ----- Basin Index (%) * 90 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 13.4 20.8 64 North Rapid Creek 6130 -M .0 * 14.4 18.6 77 ----- ----- Basin Index (%) * 71 UPPER N. PLATTE Arapaho Ridge 10960 13.1 .0 * 36.0 31.0 116 Blackhall Mtn 9820 9.5 -M * 43.4 -M * Columbine 9160 .0 .0 * 36.8 32.5 113 Divide Peak 8880 .0 .0 * 31.6 28.7 110 Joe Wright 10120 8.5 .6 1417* 38.8 36.0 108 Laprele Creek 8375 .0 .0 * 21.1 19.5 108 Med Bow 10500 26.6 -M * 46.2 -M * Never Summer 10280 11.8 2.6 454 26.8 -M * North French Creek 10130 13.9 6.2 224 39.8 36.9 108 Old Battle 10000 29.5 1.4 2107* 47.3 45.2 105 Rawah 9020 .1 .0 * 23.7 21.3 111 Sage Creek Basin 7850 .0 .0 * 22.2 19.0 117 Sand Lake 10050 21.7 6.6 329 33.5 35.2 95 South Brush Creek 8440 .0 .0 * 18.3 22.4 82 Tower 10500 34.8 16.9 206 59.1 51.2 115 Webber Springs 9250 .0 .0 * 40.5 34.4 118 Whiskey Park 8950 .1 .0 * 41.6 36.5 114 Willow Creek Pass 9540 .1 .0 * 22.9 19.8 116 Zirkel 9340 .0 .0 * 42.9 36.1 119 ----- ----- Basin Index (%) 390* 110 SWEETWATER Deer Park 9700 .1 .0 * 27.5 29.2 94 Larsen Creek 9000 .0 .0 * 19.2 -M * South Pass 9040 .2 .0 * 21.9 25.2 87 ----- ----- Basin Index (%) * 91 LOWER N. PLATTE Casper Mtn. 7900 .0 .0 * 24.2 23.5 103 Laprele Creek 8375 .0 .0 * 21.1 19.5 108 Reno Hill 8400 .2 .0 * 28.1 24.2 116 Windy Peak 7900 .1 .0 * 18.3 17.8 103 ----- ----- Basin Index (%) * 108 LARAMIE RIVER Brooklyn Lake 10240 .1 .0 * 35.0 29.9 117 Cinnabar Park 9574 -M .0 * 32.3 32.4 100 Crow Creek 8330 .1 .0 * 18.1 18.8 96 Deadman Hill 10220 .2 .0 * 26.4 25.4 104 Rawah 9020 .1 .0 * 23.7 21.3 111 Roach 9700 .2 .0 * 31.1 27.3 114 Windy Peak 7900 .1 .0 * 18.3 17.8 103 ----- ----- Basin Index (%) * 107 S. PLATTE Black Mountain 8920 .1 -M * 20.2 -M * Crow Creek 8330 .1 .0 * 18.1 18.8 96 Deadman Hill 10220 .2 .0 * 26.4 25.4 104 ----- ----- Basin Index (%) * 101 LITTLE SNAKE RIVER Battle Mountain 7440 .0 .0 * 22.1 20.2 109 Divide Peak 8880 .0 .0 * 31.6 28.7 110 Elk River 8700 .0 .0 * 26.3 26.7 99 Little Snake River 8915 .0 .0 * 47.7 38.1 125 Old Battle 10000 29.5 1.4 2107* 47.3 45.2 105 Sage Creek Basin 7850 .0 .0 * 22.2 19.0 117 Sandstone RS 8150 .0 .0 * 24.2 24.4 99 Whiskey Park 8950 .1 .0 * 41.6 36.5 114 ----- ----- Basin Index (%) 2114* 110 UPPER GREEN RIVER Big Sandy Opening 9080 .0 .0 * 19.9 19.4 103 Blind Bull Sum 8650 5.2 .0 * 26.1 25.8 101 East Rim Divide 7930 .0 .0 * 18.3 16.2 113 Elkhart Park G.S. 9400 .0 .0 * 21.6 19.3 112 Gros Ventre Summit 8750 -M .0 * -M 18.5 * Gunsight Pass 9820 1.4 .0 * 23.0 20.3 113 Indian Creek 9425 3.3 .0 * 27.4 29.5 93 Kendall R.S. 7740 .0 .0 * 18.2 18.7 97 Loomis Park 8240 .6 .0 * 24.3 22.7 107 New Fork Lake 8340 .0 .0 * 17.4 15.9 109 Pocket Creek 9360 .0 -M * 20.7 -M * Snider Basin 8060 .0 .0 * 19.8 18.5 107 Spring Creek Divide 9000 2.5 .0 * 31.5 30.7 103 Triple Peak 8500 -M .0 * -M 33.2 * ----- ----- Basin Index (%) * 104 LOWER GREEN RIVER Blacks Fork Jct 8869 .1 -M * 19.8 -M * Buck Pasture 9632 .0 -M * 28.9 -M * EF Blacks Fork GS 9360 .0 -M * 20.1 -M * Hams Fork 7840 .0 .0 * 20.5 16.4 125 Hewinta 9500 .0 .0 * 22.4 19.8 113 Hickerson Park 9122 .0 .0 * 18.4 15.4 119 Hole-in-Rock 9168 .1 .0 * 18.7 15.1 124 Indian Creek 9425 3.3 .0 * 27.4 29.5 93 Kelley R.S. 8180 .0 .0 * 25.1 24.2 104 Spirit Lk 10235 .4 -M * 25.6 -M * Steel Creek Park 10158 1.7 .0 * 27.8 23.2 120 ----- ----- Basin Index (%) * 112 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 21.8 -M * Bug Lake 7987 .1 .0 * 33.2 25.7 129 Burts Miller Ranch 8000 .0 -M * 11.9 -M * Chalk Creek #1 9171 .0 .0 * 39.2 33.7 116 Hayden Fork 9130 .0 .0 * 31.6 28.2 112 Kelley R.S. 8180 .0 .0 * 25.1 24.2 104 Lily Lake 9133 .0 .0 * 23.3 23.7 98 Monte Cristo 8932 2.9 .0 * 42.7 34.4 124 Salt River Summit 7640 .0 .0 * 25.5 22.2 115 Spring Creek Divide 9000 2.5 .0 * 31.5 30.7 103 ----- ----- Basin Index (%) * 113 ----------------------------------------------------------------------------- -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.