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 WEDNESDAY: MARCH 6 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 17.2 13.7 126 19.1 17.8 107 Black Bear 8170 38.0 30.5 125 37.6 32.0 118 Blind Bull Sum 8650 19.6 18.7 105 15.9 16.5 96 Cottonwood Creek 7670 17.8 17.9 99 20.9 20.2 103 East Rim Divide 7930 9.6 8.8 109 9.8 9.9 99 Grand Targhee 9260 36.8 31.0 119 27.8 25.3 110 Granite Creek 6770 17.3 14.2 122 18.2 17.1 106 Grassy Lake 7265 29.1 26.9 108 32.3 30.4 106 Gros Ventre Summit 8750 8.4 10.4 81 10.2 10.5 97 Gunsight Pass 9820 11.4 11.1 103 13.4 11.1 121 Lewis Lake Divide 7850 30.4 25.7 118 30.4 29.9 102 Phillips Bench 8200 25.7 20.4 126 -M 23.5 * Salt River Summit 7640 11.4 10.9 105 13.2 13.9 95 Snake River Station 6920 18.3 14.7 124 22.6 19.2 118 Spring Creek Divide 9000 19.7 19.3 102 20.4 19.9 103 Thumb Divide 7980 16.1 12.6 128 15.9 15.3 104 Togwotee Pass 9580 21.2 18.8 113 21.8 20.0 109 Two Ocean Plateau 9240 26.4 22.1 119 21.2 22.5 94 Willow Creek 8080 25.5 23.4 109 28.8 27.7 104 Younts Peak 8350 -M 12.0 * -M 13.0 * ----- ----- Basin Index (%) 114 106 MADISON-GALLATIN Black Bear 8170 38.0 30.5 125 37.6 32.0 118 Canyon 7870 12.0 11.1 108 13.8 13.5 102 Madison Plateau 7750 24.8 18.4 135 24.1 22.1 109 West Yellowstone 6700 13.4 9.2 146 15.1 12.0 126 Whiskey Creek 6800 17.2 12.5 138 17.6 16.9 104 ----- ----- Basin Index (%) 129 112 YELLOWSTONE Beartooth Lake 9360 17.6 17.7 99 16.2 16.3 99 Burnt Mtn 5880 7.6 4.3 177 11.8 9.8 120 Canyon 7870 12.0 11.1 108 13.8 13.5 102 Cole Creek 7850 13.5 10.7 126 -M 9.4 * Evening Star 9200 22.9 20.1 114 24.8 22.8 109 Fisher Creek 9100 26.7 26.3 102 29.5 26.4 112 Northeast Entrance 7350 9.6 8.5 113 11.7 10.2 115 Parker Peak 9400 20.7 16.3 127 20.6 14.5 142 Sylvan Lake 8420 18.2 16.4 111 23.5 18.5 127 Thumb Divide 7980 16.1 12.6 128 15.9 15.3 104 Two Ocean Plateau 9240 26.4 22.1 119 21.2 22.5 94 White Mill 8700 18.8 18.8 100 16.5 19.7 84 Wolverine 7650 11.3 8.8 128 11.3 10.2 111 Younts Peak 8350 -M 12.0 * -M 13.0 * ----- ----- Basin Index (%) 114 109 WIND RIVER Burroughs Creek 8750 9.6 -M * 11.4 -M * Castle Creek 8400 3.8 -M * 5.0 -M * Cold Springs 9630 5.8 5.7 102 6.3 7.8 81 Deer Park 9700 14.1 11.2 126 15.1 15.6 97 Hobbs Park 10100 11.9 10.4 114 9.2 10.0 92 Kirwin 9550 8.9 7.4 120 9.3 9.1 102 Little Warm 9370 7.5 8.3 90 7.2 10.2 71 Owl Creek 8975 4.3 4.1 105 4.9 4.4 111 South Pass 9040 11.9 12.0 99 10.3 14.0 74 St. Lawrence Alt 8620 3.7 5.6 66 7.1 6.8 104 Togwotee Pass 9580 21.2 18.8 113 21.8 20.0 109 Townsend Creek 8700 7.5 7.1 106 8.2 9.0 91 ----- ----- Basin Index (%) 107 93 BIGHORN BASIN Bald Mtn. 9380 14.6 15.5 94 10.5 13.5 78 Bear Trap Meadow 8200 6.7 4.6 146 5.8 6.4 91 Bone Springs Div 9350 11.1 12.9 86 9.6 12.2 79 Grave Springs 8550 6.0 7.1 85 7.3 8.2 89 Kirwin 9550 8.9 7.4 120 9.3 9.1 102 Marquette 8760 6.0 -M * 7.4 -M * Middle Powder 7760 7.1 8.4 85 4.1 9.0 46 Owl Creek 8975 4.3 4.1 105 4.9 4.4 111 Powder River Pass 9480 8.4 8.2 102 7.8 9.9 79 Shell Creek 9580 11.5 12.0 96 9.8 10.9 90 Timber Creek 7950 3.0 3.9 77 4.9 5.4 91 ----- ----- Basin Index (%) 97 83 SHOSHONE RIVER Blackwater 9780 20.1 18.1 111 20.4 16.6 123 Evening Star 9200 22.9 20.1 114 24.8 22.8 109 Marquette 8760 6.0 -M * 7.4 -M * Sylvan Lake 8420 18.2 16.4 111 23.5 18.5 127 Sylvan Road 7120 11.0 9.8 112 14.3 14.3 100 Younts Peak 8350 -M 12.0 * -M 13.0 * ----- ----- Basin Index (%) 112 115 POWDER RIVER Bear Trap Meadow 8200 6.7 4.6 146 5.8 6.4 91 Cloud Peak Reservoir 9860 9.6 11.0 87 8.3 9.9 84 Grave Springs 8550 6.0 7.1 85 7.3 8.2 89 Hansen Sawmill 8360 4.3 4.8 90 5.8 6.3 92 Middle Powder 7760 7.1 8.4 85 4.1 9.0 46 Powder River Pass 9480 8.4 8.2 102 7.8 9.9 79 Soldier Park 8720 2.9 -M * 5.5 -M * ----- ----- Basin Index (%) 95 79 TONGUE RIVER Big Goose 7990 6.0 6.5 92 8.2 8.1 101 Bone Springs Div 9350 11.1 12.9 86 9.6 12.2 79 Burgess Junction 7880 6.5 8.8 74 7.2 9.4 77 Dome Lake 8880 6.7 9.0 74 6.5 10.2 64 Little Goose 8870 7.3 -M * 6.2 -M * Sucker Creek 8880 8.6 9.5 91 8.0 10.9 73 Tie Creek 6870 3.6 4.6 78 8.0 8.7 92 ----- ----- Basin Index (%) 83 80 BELLE FOURCHE Blind Park 6890 7.2 6.5 111 6.0 9.7 62 Cole Canyon 5910 5.4 4.9 110 9.5 7.3 130 ----- ----- Basin Index (%) 111 91 CHEYENNE RIVER BASIN Blind Park 6890 7.2 6.5 111 6.0 9.7 62 North Rapid Creek 6130 5.7 6.1 93 5.6 7.8 72 ----- ----- Basin Index (%) 102 66 UPPER N. PLATTE Arapaho Ridge 10960 20.2 17.2 117 20.6 18.2 113 Blackhall Mtn 9820 25.9 -M * 27.1 -M * Columbine 9160 23.9 20.5 117 23.9 20.9 114 Divide Peak 8880 16.4 16.5 99 19.0 17.4 109 Joe Wright 10120 17.1 17.6 97 24.6 20.7 119 Laprele Creek 8375 9.3 7.9 118 10.1 9.7 104 Med Bow 10500 29.9 -M * 27.7 -M * Never Summer 10280 17.4 16.5 105 15.1 -M * North French Creek 10130 23.7 21.6 110 24.3 21.6 112 Old Battle 10000 29.3 24.7 119 29.6 28.8 103 Rawah 9020 11.0 9.0 122 13.9 11.2 124 Sage Creek Basin 7850 15.1 10.9 139 14.6 12.1 121 Sand Lake 10050 22.8 21.7 105 19.0 19.6 97 South Brush Creek 8440 9.0 10.8 83 9.7 12.1 80 Tower 10500 42.8 37.4 114 35.5 32.9 108 Webber Springs 9250 21.1 19.4 109 25.2 21.9 115 Whiskey Park 8950 24.8 22.4 111 27.1 23.1 117 Willow Creek Pass 9540 12.3 9.9 124 13.9 10.7 130 Zirkel 9340 27.2 24.2 112 30.8 23.8 129 ----- ----- Basin Index (%) 111 112 SWEETWATER Deer Park 9700 14.1 11.2 126 15.1 15.6 97 Larsen Creek 9000 10.0 9.9 101 12.9 -M * South Pass 9040 11.9 12.0 99 10.3 14.0 74 ----- ----- Basin Index (%) 109 86 LOWER N. PLATTE Casper Mtn. 7900 11.0 10.9 101 9.1 11.5 79 Laprele Creek 8375 9.3 7.9 118 10.1 9.7 104 Reno Hill 8400 11.4 10.8 106 12.1 11.6 104 Windy Peak 7900 7.3 6.1 120 7.9 8.1 98 ----- ----- Basin Index (%) 109 96 LARAMIE RIVER Brooklyn Lake 10240 18.7 15.9 118 19.9 16.7 119 Cinnabar Park 9574 17.0 17.5 97 19.5 20.0 98 Crow Creek 8330 4.0 6.9 58 7.8 8.2 95 Deadman Hill 10220 15.9 12.7 125 14.9 13.4 111 Rawah 9020 11.0 9.0 122 13.9 11.2 124 Roach 9700 13.4 12.8 105 16.3 15.3 107 Windy Peak 7900 7.3 6.1 120 7.9 8.1 98 ----- ----- Basin Index (%) 108 108 S. PLATTE Black Mountain 8920 8.6 -M * 9.5 -M * Crow Creek 8330 4.0 6.9 58 7.8 8.2 95 Deadman Hill 10220 15.9 12.7 125 14.9 13.4 111 ----- ----- Basin Index (%) 102 105 LITTLE SNAKE RIVER Battle Mountain 7440 11.3 10.1 112 13.8 12.5 110 Divide Peak 8880 16.4 16.5 99 19.0 17.4 109 Elk River 8700 16.7 16.3 102 15.8 16.5 96 Little Snake River 8915 23.7 20.0 118 31.4 25.4 124 Old Battle 10000 29.3 24.7 119 29.6 28.8 103 Sage Creek Basin 7850 15.1 10.9 139 14.6 12.1 121 Sandstone RS 8150 14.5 11.3 128 15.4 15.5 99 Whiskey Park 8950 24.8 22.4 111 27.1 23.1 117 ----- ----- Basin Index (%) 115 110 UPPER GREEN RIVER Big Sandy Opening 9080 11.9 10.4 114 12.7 10.8 118 Blind Bull Sum 8650 19.6 18.7 105 15.9 16.5 96 East Rim Divide 7930 9.6 8.8 109 9.8 9.9 99 Elkhart Park G.S. 9400 10.9 9.7 112 11.6 10.9 106 Gros Ventre Summit 8750 8.4 10.4 81 10.2 10.5 97 Gunsight Pass 9820 11.4 11.1 103 13.4 11.1 121 Indian Creek 9425 18.2 19.5 93 14.7 18.4 80 Kendall R.S. 7740 10.1 10.1 100 10.5 12.1 87 Loomis Park 8240 14.2 12.3 115 14.9 14.5 103 New Fork Lake 8340 8.6 8.6 100 8.1 9.1 89 Pocket Creek 9360 12.3 -M * 13.2 -M * Snyder Basin 8060 10.2 10.3 99 11.9 11.9 100 Spring Creek Divide 9000 19.7 19.3 102 20.4 19.9 103 Triple Peak 8500 20.0 17.8 112 21.9 20.9 105 ----- ----- Basin Index (%) 103 100 LOWER GREEN RIVER Blacks Fork Jct 8869 7.4 -M * 10.3 -M * Buck Pasture 9632 12.6 -M * 15.2 -M * EF Blacks Fork GS 9360 10.0 -M * 8.6 -M * Hams Fork 7840 8.7 9.6 91 9.1 9.4 97 Hewinta 9500 8.9 8.3 107 11.7 11.2 104 Hickerson Park 9122 6.7 6.2 108 9.0 7.9 114 Hole-in-Rock 9168 5.5 5.8 95 8.5 7.4 115 Indian Creek 9425 18.2 19.5 93 14.7 18.4 80 Kelley R.S. 8180 11.6 12.4 94 12.2 15.0 81 Spirit Lk 10235 12.5 -M * 13.0 -M * Steel Creek Park 10158 11.7 12.1 97 14.4 12.9 112 ----- ----- Basin Index (%) 96 97 UPPER BEAR RIVER Bear River RS 8777 9.1 -M * 12.0 -M * Bug Lake 7987 18.7 15.4 121 19.0 16.0 119 Burts Miller Ranch 8000 6.0 -M * 7.1 -M * Chalk Creek #1 9171 20.1 19.0 106 24.1 20.3 119 Hayden Fork 9130 14.7 12.5 118 19.4 17.0 114 Kelley R.S. 8180 11.6 12.4 94 12.2 15.0 81 Lily Lake 9133 10.2 10.7 95 13.3 13.8 96 Monte Cristo 8932 25.5 22.1 115 25.1 21.2 118 Salt River Summit 7640 11.4 10.9 105 13.2 13.9 95 Spring Creek Divide 9000 19.7 19.3 102 20.4 19.9 103 ----- ----- Basin Index (%) 108 107 ----------------------------------------------------------------------------- -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.