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 SUNDAY: MARCH 3 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 17.1 13.6 126 19.0 17.4 109 Black Bear 8170 37.8 29.9 126 37.5 31.3 120 Blind Bull Sum 8650 19.4 18.2 107 15.8 16.1 98 Cottonwood Creek 7670 17.8 17.2 103 20.7 19.8 105 East Rim Divide 7930 9.3 8.3 112 9.6 9.6 100 Grand Targhee 9260 36.4 30.5 119 27.5 25.0 110 Granite Creek 6770 17.0 13.9 122 18.2 16.6 110 Grassy Lake 7265 29.0 26.4 110 32.2 29.8 108 Gros Ventre Summit 8750 8.3 10.0 83 9.9 10.2 97 Gunsight Pass 9820 11.3 10.7 106 13.2 10.9 121 Lewis Lake Divide 7850 30.4 25.3 120 30.3 29.2 104 Phillips Bench 8200 25.5 19.9 128 -M 23.0 * Salt River Summit 7640 11.2 10.7 105 13.0 13.6 96 Snake River Station 6920 18.2 14.4 126 22.6 18.8 120 Spring Creek Divide 9000 19.3 18.8 103 20.0 19.5 103 Thumb Divide 7980 16.0 12.4 129 15.8 14.8 107 Togwotee Pass 9580 21.1 18.1 117 21.6 19.6 110 Two Ocean Plateau 9240 26.3 21.7 121 21.2 21.9 97 Willow Creek 8080 25.0 22.6 111 28.6 27.1 106 Younts Peak 8350 -M 11.7 * -M 12.8 * ----- ----- Basin Index (%) 116 107 MADISON-GALLATIN Black Bear 8170 37.8 29.9 126 37.5 31.3 120 Canyon 7870 11.8 10.7 110 13.6 13.2 103 Madison Plateau 7750 24.6 18.0 137 23.9 21.5 111 West Yellowstone 6700 13.1 9.1 144 15.0 11.7 128 Whiskey Creek 6800 17.0 12.1 140 17.6 16.5 107 ----- ----- Basin Index (%) 131 114 YELLOWSTONE Beartooth Lake 9360 17.4 17.1 102 16.0 15.9 101 Burnt Mtn 5880 7.5 4.1 183 11.6 9.6 121 Canyon 7870 11.8 10.7 110 13.6 13.2 103 Cole Creek 7850 13.0 10.2 127 -M 9.2 * Evening Star 9200 22.7 19.4 117 24.6 22.3 110 Fisher Creek 9100 26.6 26.0 102 29.2 25.8 113 Northeast Entrance 7350 9.6 8.3 116 11.5 10.0 115 Parker Peak 9400 20.5 16.2 127 20.3 14.2 143 Sylvan Lake 8420 18.1 16.0 113 23.3 18.1 129 Thumb Divide 7980 16.0 12.4 129 15.8 14.8 107 Two Ocean Plateau 9240 26.3 21.7 121 21.2 21.9 97 White Mill 8700 18.7 18.5 101 16.3 19.2 85 Wolverine 7650 11.1 8.6 129 10.8 10.1 107 Younts Peak 8350 -M 11.7 * -M 12.8 * ----- ----- Basin Index (%) 116 110 WIND RIVER Burroughs Creek 8750 9.4 -M * 10.9 -M * Castle Creek 8400 3.6 -M * 4.9 -M * Cold Springs 9630 5.6 5.6 100 5.9 7.5 79 Deer Park 9700 14.0 10.9 128 14.9 15.4 97 Hobbs Park 10100 11.6 9.9 117 8.4 9.6 88 Kirwin 9550 8.6 7.1 121 8.8 8.9 99 Little Warm 9370 7.2 8.1 89 6.7 9.9 68 Owl Creek 8975 4.1 4.0 102 4.5 4.4 102 South Pass 9040 11.6 11.6 100 9.8 13.6 72 St. Lawrence Alt 8620 3.3 5.3 62 7.0 6.6 106 Togwotee Pass 9580 21.1 18.1 117 21.6 19.6 110 Townsend Creek 8700 7.3 6.7 109 8.1 8.7 93 ----- ----- Basin Index (%) 108 92 BIGHORN BASIN Bald Mtn. 9380 14.5 15.0 97 10.2 13.3 77 Bear Trap Meadow 8200 6.2 4.5 138 5.3 6.2 85 Bone Springs Div 9350 11.1 12.3 90 9.2 11.9 77 Grave Springs 8550 5.8 7.0 83 6.6 8.0 82 Kirwin 9550 8.6 7.1 121 8.8 8.9 99 Marquette 8760 5.6 -M * 7.2 -M * Middle Powder 7760 7.0 8.2 85 3.6 8.8 41 Owl Creek 8975 4.1 4.0 102 4.5 4.4 102 Powder River Pass 9480 8.4 8.0 105 7.6 9.7 78 Shell Creek 9580 11.2 11.8 95 9.6 10.7 90 Timber Creek 7950 2.9 3.9 74 4.9 5.3 92 ----- ----- Basin Index (%) 98 81 SHOSHONE RIVER Blackwater 9780 19.9 17.5 114 20.2 16.3 124 Evening Star 9200 22.7 19.4 117 24.6 22.3 110 Marquette 8760 5.6 -M * 7.2 -M * Sylvan Lake 8420 18.1 16.0 113 23.3 18.1 129 Sylvan Road 7120 10.9 9.6 114 14.2 14.0 101 Younts Peak 8350 -M 11.7 * -M 12.8 * ----- ----- Basin Index (%) 115 116 POWDER RIVER Bear Trap Meadow 8200 6.2 4.5 138 5.3 6.2 85 Cloud Peak Reservoir 9860 9.3 10.5 89 8.0 9.7 82 Grave Springs 8550 5.8 7.0 83 6.6 8.0 82 Hansen Sawmill 8360 4.2 4.7 89 5.7 6.2 92 Middle Powder 7760 7.0 8.2 85 3.6 8.8 41 Powder River Pass 9480 8.4 8.0 105 7.6 9.7 78 Soldier Park 8720 2.7 -M * 5.3 -M * ----- ----- Basin Index (%) 95 76 TONGUE RIVER Big Goose 7990 5.7 6.3 90 7.6 8.0 95 Bone Springs Div 9350 11.1 12.3 90 9.2 11.9 77 Burgess Junction 7880 6.6 8.4 79 6.6 9.1 73 Dome Lake 8880 6.6 8.8 75 6.1 10.0 61 Little Goose 8870 7.0 -M * 6.1 -M * Sucker Creek 8880 8.4 9.1 92 7.5 10.7 70 Tie Creek 6870 3.3 4.4 75 7.7 8.6 90 ----- ----- Basin Index (%) 85 77 BELLE FOURCHE Blind Park 6890 7.0 6.4 109 5.8 9.5 61 Cole Canyon 5910 5.3 4.9 108 9.0 7.2 125 ----- ----- Basin Index (%) 109 89 CHEYENNE RIVER BASIN Blind Park 6890 7.0 6.4 109 5.8 9.5 61 North Rapid Creek 6130 5.5 6.0 92 5.5 7.7 71 ----- ----- Basin Index (%) 101 66 UPPER N. PLATTE Arapaho Ridge 10960 20.0 16.9 118 20.4 17.9 114 Blackhall Mtn 9820 25.5 -M * 27.0 -M * Columbine 9160 23.2 20.1 115 23.6 20.6 115 Divide Peak 8880 16.1 16.1 100 18.7 16.9 111 Joe Wright 10120 16.8 16.9 99 24.3 20.1 121 Laprele Creek 8375 9.1 7.8 117 9.7 9.4 103 Med Bow 10500 29.6 -M * 27.5 -M * Never Summer 10280 17.2 16.3 106 14.9 -M * North French Creek 10130 23.4 21.2 110 24.1 21.2 114 Old Battle 10000 29.0 24.2 120 29.5 28.1 105 Rawah 9020 10.9 8.8 124 13.7 11.0 125 Sage Creek Basin 7850 14.5 10.7 136 14.2 11.8 120 Sand Lake 10050 22.4 21.3 105 18.7 19.1 98 South Brush Creek 8440 8.9 10.4 86 9.5 11.8 81 Tower 10500 42.3 36.7 115 35.2 32.3 109 Webber Springs 9250 20.9 18.9 111 24.8 21.3 116 Whiskey Park 8950 -M 21.8 * -M 22.6 * Willow Creek Pass 9540 12.0 9.7 124 13.6 10.5 130 Zirkel 9340 26.9 23.3 115 30.5 23.6 129 ----- ----- Basin Index (%) 112 113 SWEETWATER Deer Park 9700 14.0 10.9 128 14.9 15.4 97 Larsen Creek 9000 9.6 9.7 99 12.6 -M * South Pass 9040 11.6 11.6 100 9.8 13.6 72 ----- ----- Basin Index (%) 109 85 LOWER N. PLATTE Casper Mtn. 7900 10.9 10.4 105 8.9 11.2 79 Laprele Creek 8375 9.1 7.8 117 9.7 9.4 103 Reno Hill 8400 11.0 10.3 107 11.5 11.2 103 Windy Peak 7900 6.7 5.8 116 7.3 7.8 94 ----- ----- Basin Index (%) 110 94 LARAMIE RIVER Brooklyn Lake 10240 18.5 15.3 121 19.7 16.2 122 Cinnabar Park 9574 16.8 17.3 97 19.3 19.8 97 Crow Creek 8330 3.8 6.8 56 7.6 7.9 96 Deadman Hill 10220 15.8 12.5 126 14.7 12.9 114 Rawah 9020 10.9 8.8 124 13.7 11.0 125 Roach 9700 13.2 12.6 105 16.2 14.8 109 Windy Peak 7900 6.7 5.8 116 7.3 7.8 94 ----- ----- Basin Index (%) 108 109 S. PLATTE Black Mountain 8920 8.4 -M * 9.3 -M * Crow Creek 8330 3.8 6.8 56 7.6 7.9 96 Deadman Hill 10220 15.8 12.5 126 14.7 12.9 114 ----- ----- Basin Index (%) 102 107 LITTLE SNAKE RIVER Battle Mountain 7440 11.2 9.9 113 13.6 12.2 111 Divide Peak 8880 16.1 16.1 100 18.7 16.9 111 Elk River 8700 16.3 15.8 103 15.4 16.1 96 Little Snake River 8915 23.3 19.8 118 31.2 25.2 124 Old Battle 10000 29.0 24.2 120 29.5 28.1 105 Sage Creek Basin 7850 14.5 10.7 136 14.2 11.8 120 Sandstone RS 8150 14.2 10.7 133 15.1 15.2 99 Whiskey Park 8950 -M 21.8 * -M 22.6 * ----- ----- Basin Index (%) 116 110 UPPER GREEN RIVER Big Sandy Opening 9080 11.7 10.2 115 12.4 10.6 117 Blind Bull Sum 8650 19.4 18.2 107 15.8 16.1 98 East Rim Divide 7930 9.3 8.3 112 9.6 9.6 100 Elkhart Park G.S. 9400 10.6 9.5 112 11.4 10.6 108 Gros Ventre Summit 8750 8.3 10.0 83 9.9 10.2 97 Gunsight Pass 9820 11.3 10.7 106 13.2 10.9 121 Indian Creek 9425 17.7 19.1 93 14.3 18.0 79 Kendall R.S. 7740 9.9 9.9 100 10.3 11.8 87 Loomis Park 8240 13.9 11.9 117 14.8 14.2 104 New Fork Lake 8340 8.4 8.3 101 7.7 8.8 88 Pocket Creek 9360 12.0 -M * 13.0 -M * Snyder Basin 8060 9.9 9.9 100 11.6 11.7 99 Spring Creek Divide 9000 19.3 18.8 103 20.0 19.5 103 Triple Peak 8500 19.7 17.1 115 21.7 20.5 106 ----- ----- Basin Index (%) 105 100 LOWER GREEN RIVER Blacks Fork Jct 8869 7.3 -M * 10.2 -M * Buck Pasture 9632 12.4 -M * 15.0 -M * EF Blacks Fork GS 9360 9.8 -M * 8.4 -M * Hams Fork 7840 8.5 9.4 90 9.0 9.2 98 Hewinta 9500 8.8 8.0 110 11.6 11.0 105 Hickerson Park 9122 6.5 6.0 108 8.9 7.6 117 Hole-in-Rock 9168 5.4 5.7 95 8.4 7.2 117 Indian Creek 9425 17.7 19.1 93 14.3 18.0 79 Kelley R.S. 8180 11.3 12.2 93 11.9 14.7 81 Spirit Lk 10235 12.5 -M * 12.8 -M * Steel Creek Park 10158 12.1 11.7 103 14.3 12.6 113 ----- ----- Basin Index (%) 98 98 UPPER BEAR RIVER Bear River RS 8777 8.9 -M * 11.9 -M * Bug Lake 7987 18.5 15.0 123 18.8 15.6 121 Burts Miller Ranch 8000 6.1 -M * 7.0 -M * Chalk Creek #1 9171 19.7 18.6 106 23.9 19.8 121 Hayden Fork 9130 14.3 12.3 116 19.1 16.6 115 Kelley R.S. 8180 11.3 12.2 93 11.9 14.7 81 Lily Lake 9133 10.2 10.5 97 13.3 13.4 99 Monte Cristo 8932 25.3 21.5 118 24.4 20.8 117 Salt River Summit 7640 11.2 10.7 105 13.0 13.6 96 Spring Creek Divide 9000 19.3 18.8 103 20.0 19.5 103 ----- ----- Basin Index (%) 109 108 ----------------------------------------------------------------------------- -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.