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 FRIDAY: MARCH 29 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 17.7 14.7 120 20.7 19.9 104 Black Bear 8170 41.5 35.4 117 40.8 36.1 113 Blind Bull Sum 8650 22.0 21.8 101 17.7 18.5 96 Cottonwood Creek 7670 19.2 20.9 92 23.5 23.3 101 East Rim Divide 7930 10.3 9.8 105 10.5 11.2 94 Grand Targhee 9260 40.1 35.4 113 29.9 28.7 104 Granite Creek 6770 18.6 14.9 125 19.7 18.9 104 Grassy Lake 7265 32.5 31.3 104 35.3 34.2 103 Gros Ventre Summit 8750 8.4 12.6 67 11.3 12.2 93 Gunsight Pass 9820 12.1 13.1 92 14.4 12.9 112 Lewis Lake Divide 7850 33.5 29.3 114 35.8 33.6 107 Phillips Bench 8200 27.9 23.8 117 30.3 26.7 113 Salt River Summit 7640 13.1 12.7 103 14.8 15.8 94 Snake River Station 6920 19.6 15.8 124 24.2 21.4 113 Spring Creek Divide 9000 21.7 22.4 97 22.2 22.6 98 Thumb Divide 7980 18.0 15.1 119 17.7 17.5 101 Togwotee Pass 9580 22.7 21.5 106 23.3 22.9 102 Two Ocean Plateau 9240 28.5 25.3 113 24.1 25.8 93 Willow Creek 8080 29.4 27.0 109 32.1 31.6 102 Younts Peak 8350 -M 13.9 * -M 14.9 * ----- ----- Basin Index (%) 108 103 MADISON-GALLATIN Black Bear 8170 41.5 35.4 117 40.8 36.1 113 Canyon 7870 13.1 12.2 107 14.9 15.2 98 Madison Plateau 7750 26.4 21.1 125 26.0 24.9 104 West Yellowstone 6700 13.5 10.2 132 16.1 13.3 121 Whiskey Creek 6800 19.0 14.8 128 19.3 19.1 101 ----- ----- Basin Index (%) 121 108 YELLOWSTONE Beartooth Lake 9360 18.9 20.7 91 17.5 18.5 95 Burnt Mtn 5880 7.9 4.5 176 12.2 11.6 105 Canyon 7870 13.1 12.2 107 14.9 15.2 98 Cole Creek 7850 14.4 13.0 111 -M 11.7 * Evening Star 9200 24.1 23.8 101 26.6 25.7 104 Fisher Creek 9100 29.0 29.4 99 31.8 30.0 106 Northeast Entrance 7350 9.6 9.8 98 12.4 11.5 108 Parker Peak 9400 -M 18.5 * -M 16.5 * Sylvan Lake 8420 20.1 18.9 106 25.6 21.0 122 Thumb Divide 7980 18.0 15.1 119 17.7 17.5 101 Two Ocean Plateau 9240 28.5 25.3 113 24.1 25.8 93 White Mill 8700 20.6 21.3 97 17.8 22.3 80 Wolverine 7650 11.2 8.9 126 11.8 11.4 104 Younts Peak 8350 -M 13.9 * -M 14.9 * ----- ----- Basin Index (%) 106 101 WIND RIVER Burroughs Creek 8750 10.0 -M * 11.9 -M * Castle Creek 8400 4.2 -M * 5.4 -M * Cold Springs 9630 6.3 7.1 89 6.7 9.2 73 Deer Park 9700 14.6 14.3 102 16.5 18.3 90 Hobbs Park 10100 13.1 13.0 101 9.9 12.1 82 Kirwin 9550 9.9 9.1 109 10.3 10.7 96 Little Warm 9370 8.3 10.1 82 8.2 12.0 68 Owl Creek 8975 4.3 5.1 84 5.3 5.5 96 South Pass 9040 12.6 14.6 86 10.8 16.3 66 St. Lawrence Alt 8620 4.1 6.7 61 7.7 8.2 94 Togwotee Pass 9580 22.7 21.5 106 23.3 22.9 102 Townsend Creek 8700 8.3 8.8 94 9.5 11.0 86 ----- ----- Basin Index (%) 94 86 BIGHORN BASIN Bald Mtn. 9380 15.7 17.8 88 11.6 15.9 73 Bear Trap Meadow 8200 7.1 5.1 139 6.7 7.7 87 Bone Springs Div 9350 12.3 15.1 81 10.7 14.4 74 Grave Springs 8550 7.7 8.6 90 8.6 9.7 89 Kirwin 9550 9.9 9.1 109 10.3 10.7 96 Marquette 8760 6.8 -M * 8.2 -M * Middle Powder 7760 8.4 10.8 78 -M 10.8 * Owl Creek 8975 4.3 5.1 84 5.3 5.5 96 Powder River Pass 9480 8.9 9.8 91 8.2 11.6 71 Shell Creek 9580 12.2 14.0 87 10.7 12.8 84 Timber Creek 7950 3.3 4.5 73 5.4 6.8 79 ----- ----- Basin Index (%) 90 81 SHOSHONE RIVER Blackwater 9780 22.2 21.7 102 22.4 19.2 117 Evening Star 9200 24.1 23.8 101 26.6 25.7 104 Marquette 8760 6.8 -M * 8.2 -M * Sylvan Lake 8420 20.1 18.9 106 25.6 21.0 122 Sylvan Road 7120 11.1 11.0 101 15.2 15.8 96 Younts Peak 8350 -M 13.9 * -M 14.9 * ----- ----- Basin Index (%) 103 110 POWDER RIVER Bear Trap Meadow 8200 7.1 5.1 139 6.7 7.7 87 Cloud Peak Reservoir 9860 11.3 13.7 82 10.0 12.2 82 Grave Springs 8550 7.7 8.6 90 8.6 9.7 89 Hansen Sawmill 8360 5.3 6.2 85 6.8 7.9 86 Middle Powder 7760 8.4 10.8 78 -M 10.8 * Powder River Pass 9480 8.9 9.8 91 8.2 11.6 71 Soldier Park 8720 3.9 -M * 6.3 -M * ----- ----- Basin Index (%) 90 82 TONGUE RIVER Big Goose 7990 7.5 8.4 89 9.1 10.1 90 Bone Springs Div 9350 12.3 15.1 81 10.7 14.4 74 Burgess Junction 7880 8.0 10.9 73 8.0 11.4 70 Dome Lake 8880 8.2 11.2 73 7.2 12.5 58 Little Goose 8870 8.7 -M * 7.2 -M * Sucker Creek 8880 10.3 11.2 92 9.4 13.2 71 Tie Creek 6870 4.2 5.4 78 9.1 10.5 87 ----- ----- Basin Index (%) 81 74 BELLE FOURCHE Blind Park 6890 7.0 7.2 97 7.4 11.0 67 Cole Canyon 5910 6.4 5.7 112 10.8 8.4 129 ----- ----- Basin Index (%) 104 94 CHEYENNE RIVER BASIN Blind Park 6890 7.0 7.2 97 7.4 11.0 67 North Rapid Creek 6130 6.4 6.7 96 6.6 9.0 73 ----- ----- Basin Index (%) 96 70 UPPER N. PLATTE Arapaho Ridge 10960 25.9 19.3 134 25.4 20.8 122 Blackhall Mtn 9820 31.7 -M * 32.2 -M * Columbine 9160 29.9 22.3 134 28.1 24.0 117 Divide Peak 8880 20.5 19.1 107 22.5 20.1 112 Joe Wright 10120 21.7 19.9 109 29.1 24.2 120 Laprele Creek 8375 12.4 9.4 132 13.3 11.5 116 Med Bow 10500 36.8 -M * 33.0 -M * Never Summer 10280 22.4 19.1 117 18.5 -M * North French Creek 10130 29.4 27.3 108 29.1 25.2 115 Old Battle 10000 35.2 28.6 123 35.8 32.9 109 Rawah 9020 14.4 10.1 143 17.2 13.1 131 Sage Creek Basin 7850 18.5 12.5 148 16.1 13.6 118 Sand Lake 10050 28.4 26.7 106 24.0 23.1 104 South Brush Creek 8440 11.3 12.1 93 12.0 14.2 85 Tower 10500 49.9 42.7 117 -M 37.5 * Webber Springs 9250 26.0 22.6 115 30.3 25.1 121 Whiskey Park 8950 -M 25.0 * -M 26.4 * Willow Creek Pass 9540 16.0 11.6 138 17.1 12.5 137 Zirkel 9340 33.0 26.2 126 36.3 26.8 135 ----- ----- Basin Index (%) 120 117 SWEETWATER Deer Park 9700 14.6 14.3 102 16.5 18.3 90 Larsen Creek 9000 10.7 11.9 90 13.7 -M * South Pass 9040 12.6 14.6 86 10.8 16.3 66 ----- ----- Basin Index (%) 93 79 LOWER N. PLATTE Casper Mtn. 7900 14.2 12.9 110 11.3 13.7 82 Laprele Creek 8375 12.4 9.4 132 13.3 11.5 116 Reno Hill 8400 15.3 12.8 120 15.7 14.1 111 Windy Peak 7900 10.4 7.7 135 11.2 9.7 115 ----- ----- Basin Index (%) 122 105 LARAMIE RIVER Brooklyn Lake 10240 23.7 19.1 124 24.7 19.6 126 Cinnabar Park 9574 20.0 19.6 102 22.7 22.7 100 Crow Creek 8330 5.6 6.8 82 9.9 9.9 100 Deadman Hill 10220 21.2 15.1 140 19.4 16.0 121 Rawah 9020 14.4 10.1 143 17.2 13.1 131 Roach 9700 17.3 15.0 115 20.9 17.9 117 Windy Peak 7900 10.4 7.7 135 11.2 9.7 115 ----- ----- Basin Index (%) 121 116 S. PLATTE Black Mountain 8920 11.5 -M * 12.4 -M * Crow Creek 8330 5.6 6.8 82 9.9 9.9 100 Deadman Hill 10220 21.2 15.1 140 19.4 16.0 121 ----- ----- Basin Index (%) 122 113 LITTLE SNAKE RIVER Battle Mountain 7440 12.7 10.9 117 15.9 14.2 112 Divide Peak 8880 20.5 19.1 107 22.5 20.1 112 Elk River 8700 20.0 18.0 111 19.0 18.9 101 Little Snake River 8915 29.0 22.3 130 36.3 27.8 131 Old Battle 10000 35.2 28.6 123 35.8 32.9 109 Sage Creek Basin 7850 18.5 12.5 148 16.1 13.6 118 Sandstone RS 8150 16.9 13.1 129 18.2 17.4 105 Whiskey Park 8950 -M 25.0 * -M 26.4 * ----- ----- Basin Index (%) 123 113 UPPER GREEN RIVER Big Sandy Opening 9080 12.9 12.2 106 13.8 12.5 110 Blind Bull Sum 8650 22.0 21.8 101 17.7 18.5 96 East Rim Divide 7930 10.3 9.8 105 10.5 11.2 94 Elkhart Park G.S. 9400 12.0 11.7 103 12.7 12.5 102 Gros Ventre Summit 8750 8.4 12.6 67 11.3 12.2 93 Gunsight Pass 9820 12.1 13.1 92 14.4 12.9 112 Indian Creek 9425 21.1 23.2 91 16.9 21.3 79 Kendall R.S. 7740 10.5 11.3 93 11.1 13.6 82 Loomis Park 8240 15.2 14.4 106 16.0 16.4 98 New Fork Lake 8340 9.3 10.2 91 8.8 10.2 86 Pocket Creek 9360 13.9 -M * 14.5 -M * Snider Basin 8060 11.3 11.8 96 12.9 13.4 96 Spring Creek Divide 9000 21.7 22.4 97 22.2 22.6 98 Triple Peak 8500 21.8 21.1 103 23.6 24.0 98 ----- ----- Basin Index (%) 96 95 LOWER GREEN RIVER Blacks Fork Jct 8869 8.7 -M * 11.9 -M * Buck Pasture 9632 14.1 -M * 17.1 -M * EF Blacks Fork GS 9360 11.3 -M * 10.0 -M * Hams Fork 7840 10.2 10.6 96 10.8 10.8 100 Hewinta 9500 11.9 10.4 114 13.6 13.1 104 Hickerson Park 9122 8.5 7.2 118 10.6 9.4 113 Hole-in-Rock 9168 6.1 7.0 87 9.8 8.9 110 Indian Creek 9425 21.1 23.2 91 16.9 21.3 79 Kelley R.S. 8180 14.3 14.7 97 14.6 17.2 85 Spirit Lk 10235 15.2 -M * 15.6 -M * Steel Creek Park 10158 14.5 14.6 99 16.9 15.3 110 ----- ----- Basin Index (%) 99 97 UPPER BEAR RIVER Bear River RS 8777 10.4 -M * 13.9 -M * Bug Lake 7987 23.2 17.9 130 22.6 18.3 123 Burts Miller Ranch 8000 6.7 -M * 8.1 -M * Chalk Creek #1 9171 24.0 22.7 106 27.8 23.6 118 Hayden Fork 9130 16.0 14.8 108 21.8 19.7 111 Kelley R.S. 8180 14.3 14.7 97 14.6 17.2 85 Lily Lake 9133 11.8 11.9 99 15.1 16.0 94 Monte Cristo 8932 31.8 25.6 124 29.8 24.5 122 Salt River Summit 7640 13.1 12.7 103 14.8 15.8 94 Spring Creek Divide 9000 21.7 22.4 97 22.2 22.6 98 ----- ----- Basin Index (%) 109 107 ----------------------------------------------------------------------------- -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.