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 17 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 15.1 16.0 94 18.9 18.2 104 Blind Bull Sum 8650 21.8 21.6 101 15.2 16.2 94 Cottonwood Creek 7670 20.3 19.4 105 23.7 22.4 106 East Rim Divide 7930 8.8 10.0 88 9.8 10.1 97 Grand Targhee 9260 34.3 36.5 94 24.9 27.0 92 Granite Creek 6770 13.9 15.6 89 14.7 16.8 88 Grassy Lake 7265 26.3 29.2 90 32.0 31.6 101 Gros Ventre Summit 8750 10.6 11.1 95 11.9 11.0 108 Gunsight Pass 9820 11.6 11.9 97 13.0 12.4 105 Lewis Lake Divide 7850 29.0 27.5 105 32.8 29.4 112 Loomis Park 8240 11.8 13.8 86 13.3 15.2 88 Phillips Bench 8200 23.0 23.2 99 25.6 23.7 108 Salt River Summit 7640 14.5 12.2 119 13.7 13.7 100 Snake River Station 6920 15.7 16.1 98 21.7 19.6 111 Somsen Ranch 6800 16.7 11.7 143 19.8 14.6 136 Spring Creek Divide 9000 -M 22.2 * -M 21.6 * Thumb Divide 7980 16.2 14.3 113 16.5 15.4 107 Togwotee Pass 9580 17.7 20.9 85 17.3 22.3 78 Triple Peak 8500 21.5 21.6 100 22.4 23.2 97 Two Ocean Plateau 9240 24.5 25.8 95 23.7 23.2 102 Willow Creek 8080 30.9 26.5 117 31.3 29.0 108 Younts Peak 8350 13.1 13.2 99 14.0 13.0 108 ----- ----- Basin Index (%) 100 102 MADISON HEADWATERS IN WYOMING Black Bear 8170 30.8 34.2 90 34.4 32.9 105 Canyon 7870 9.8 -M * 12.5 -M * Madison Plateau 7750 18.5 20.2 92 21.3 21.8 98 West Yellowstone 6700 8.3 10.2 81 12.5 12.9 97 Whiskey Creek 6800 12.2 14.6 84 18.2 17.4 105 ----- ----- Basin Index (%) 88 102 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 13.7 19.6 70 13.3 18.0 74 Canyon 7870 9.8 -M * 12.5 -M * Evening Star 9200 19.2 23.3 82 24.4 25.6 95 Fisher Creek 9100 20.0 28.3 71 22.6 28.5 79 Monument Peak 8850 12.9 18.2 71 15.9 18.8 85 Northeast Entrance 7350 5.4 9.6 56 9.0 11.8 76 Parker Peak 9400 18.3 18.7 98 19.9 18.2 109 Sylvan Lake 8420 14.4 18.0 80 20.6 20.4 101 Thumb Divide 7980 16.2 14.3 113 16.5 15.4 107 Two Ocean Plateau 9240 24.5 25.8 95 23.7 23.2 102 White Mill 8700 14.9 21.4 70 15.8 20.7 76 Wolverine 7650 9.4 10.9 86 12.4 11.0 113 ----- ----- Basin Index (%) 81 92 WIND RIVER Burroughs Creek 8750 11.0 -M * 10.8 -M * Castle Creek 8400 6.2 6.9 90 7.3 7.8 94 Cold Springs 9630 8.1 6.4 127 10.8 7.6 142 Deer Park 9700 15.6 11.8 132 17.8 14.9 119 Hobbs Park 10100 15.4 11.6 133 15.8 10.4 152 Kirwin 9550 12.3 9.4 131 14.8 10.1 147 Little Warm 9370 9.2 8.9 103 12.0 10.8 111 South Pass 9040 13.6 12.8 106 15.5 12.7 122 St. Lawrence Alt 8620 6.2 -M * 9.4 -M * Togwotee Pass 9580 17.7 20.9 85 17.3 22.3 78 Townsend Creek 8700 9.3 7.8 119 12.9 8.9 145 ----- ----- Basin Index (%) 111 118 BIGHORN BASIN Bald Mtn. 9380 11.3 16.4 69 10.8 13.9 78 Bear Trap Meadow 8200 3.8 5.6 68 6.5 7.0 93 Bone Springs Div 9350 10.7 14.1 76 10.5 13.0 81 Grave Springs 8550 3.8 7.6 50 6.2 8.0 78 Kirwin 9550 12.3 9.4 131 14.8 10.1 147 Marquette 8760 10.4 6.0 173 13.4 7.2 186 Middle Powder 7760 4.7 9.0 52 6.6 8.6 77 Owl Creek 8975 5.3 4.7 113 6.6 5.0 132 Powder River Pass 9480 5.6 9.6 58 9.1 10.7 85 Shell Creek 9580 10.3 12.9 80 11.1 11.8 94 Timber Creek 7950 7.1 4.3 165 11.4 6.3 181 ----- ----- Basin Index (%) 86 105 SHOSHONE RIVER Blackwater 9780 20.0 20.2 99 21.1 19.2 110 Evening Star 9200 19.2 23.3 82 24.4 25.6 95 Marquette 8760 10.4 6.0 173 13.4 7.2 186 Sylvan Lake 8420 14.4 18.0 80 20.6 20.4 101 Sylvan Road 7120 7.9 10.6 75 14.6 14.9 98 Younts Peak 8350 13.1 13.2 99 14.0 13.0 108 ----- ----- Basin Index (%) 93 108 POWDER RIVER Bear Trap Meadow 8200 3.8 5.6 68 6.5 7.0 93 Cloud Peak Reservoir 9860 10.6 12.6 84 12.3 11.0 112 Grave Springs 8550 3.8 7.6 50 6.2 8.0 78 Hansen Sawmill 8360 4.6 5.8 79 7.4 7.2 103 Middle Powder 7760 4.7 9.0 52 6.6 8.6 77 Powder River Pass 9480 5.6 9.6 58 9.1 10.7 85 Soldier Park 8720 3.6 5.9 61 8.5 8.0 106 ----- ----- Basin Index (%) 65 94 TONGUE RIVER Big Goose 7990 5.3 7.1 75 9.1 8.6 106 Bone Springs Div 9350 10.7 14.1 76 10.5 13.0 81 Burgess Junction 7880 6.2 9.4 66 9.7 10.0 97 Dome Lake 8880 -M 10.0 * 9.3 10.4 89 Little Goose 8870 7.2 8.2 88 10.5 9.8 107 Sucker Creek 8880 8.5 10.6 80 12.0 11.8 102 Tie Creek 6870 2.0 4.6 43 10.5 9.0 117 ----- ----- Basin Index (%) 74 99 BELLE FOURCHE Blind Park 6890 2.3 7.0 33 -M 9.4 * Cole Canyon 5910 2.7 5.0 54 4.6 7.6 61 North Rapid Creek 6130 4.9 6.4 77 6.0 7.8 77 ----- ----- Basin Index (%) 54 69 CHEYENNE RIVER BASIN Blind Park 6890 2.3 7.0 33 -M 9.4 * North Rapid Creek 6130 4.9 6.4 77 6.0 7.8 77 ----- ----- Basin Index (%) 54 77 UPPER N. PLATTE Arapaho Ridge 10976 19.2 18.8 102 18.9 19.1 99 Blackhall Mtn 9839 30.4 25.9 117 31.0 25.2 123 Cinnabar Park 9707 18.7 18.1 103 20.7 21.0 99 Columbine 9167 24.7 20.9 118 23.2 21.0 110 Divide Peak 8730 19.1 17.0 112 22.0 18.2 121 Joe Wright 10158 17.8 18.0 99 21.5 22.6 95 Laprele Creek 8390 6.8 8.4 81 9.9 9.9 100 Med Bow 10512 33.6 -M * 29.4 -M * Never Summer 10323 16.2 17.4 93 12.6 14.5 87 North French Creek 10153 24.4 24.1 101 23.9 22.6 106 Old Battle 9860 28.6 26.0 110 29.3 28.6 102 Rawah 9069 11.3 9.5 119 14.4 13.2 109 Sage Creek Basin 7850 15.2 12.2 125 14.0 11.2 125 Sand Lake 10098 26.6 22.6 118 25.7 20.7 124 South Brush Creek 8495 9.8 10.4 94 10.7 11.6 92 Tower 10620 37.1 38.0 98 34.4 35.0 98 Webber Springs 9260 21.3 19.2 111 22.9 21.6 106 Whiskey Park 9020 29.3 24.0 122 27.2 24.0 113 Willow Creek Pass 9523 12.4 11.2 111 13.3 11.8 113 Zirkel 9338 24.4 25.4 96 25.8 26.9 96 ----- ----- Basin Index (%) 107 106 SWEETWATER Deer Park 9700 15.6 11.8 132 17.8 14.9 119 Larsen Creek 9000 7.9 10.4 76 11.9 11.4 104 South Pass 9040 13.6 12.8 106 15.5 12.7 122 ----- ----- Basin Index (%) 106 116 LOWER N. PLATTE Casper Mtn. 7920 8.7 10.9 80 12.7 11.2 113 Laprele Creek 8390 6.8 8.4 81 9.9 9.9 100 Reno Hill 8430 8.7 11.6 75 12.4 11.9 104 Windy Peak 7915 7.9 6.8 116 9.2 8.2 112 ----- ----- Basin Index (%) 85 107 LARAMIE RIVER Brooklyn Lake 10250 22.6 17.6 128 23.0 18.3 126 Cinnabar Park 9707 18.7 18.1 103 20.7 21.0 99 Crow Creek 8335 4.9 6.5 75 9.0 9.3 97 Deadman Hill 10239 17.5 14.6 120 16.5 14.8 111 Rawah 9069 11.3 9.5 119 14.4 13.2 109 Roach 9740 12.9 13.6 95 15.2 15.7 97 Windy Peak 7915 7.9 6.8 116 9.2 8.2 112 ----- ----- Basin Index (%) 110 107 S. PLATTE Crow Creek 8335 4.9 6.5 75 9.0 9.3 97 ----- ----- Basin Index (%) 75 97 LITTLE SNAKE RIVER Battle Mountain 7498 12.0 10.9 110 17.4 13.0 134 Divide Peak 8730 19.1 17.0 112 22.0 18.2 121 Elk River 8739 17.7 16.6 107 17.4 16.3 107 Elkhead Divide 8800 21.1 -M * 21.5 -M * Little Snake River 8928 27.0 23.8 113 30.0 28.0 107 Old Battle 9860 28.6 26.0 110 29.3 28.6 102 Sage Creek Basin 7850 15.2 12.2 125 14.0 11.2 125 Sandstone RS 8152 17.8 11.2 159 16.5 15.9 104 Whiskey Park 9020 29.3 24.0 122 27.2 24.0 113 ----- ----- Basin Index (%) 118 112 UPPER GREEN RIVER Big Sandy Opening 9080 10.6 11.6 91 11.4 11.0 104 Blind Bull Sum 8650 21.8 21.6 101 15.2 16.2 94 East Rim Divide 7930 8.8 10.0 88 9.8 10.1 97 Elkhart Park G.S. 9400 8.9 11.0 81 10.0 11.0 91 Gros Ventre Summit 8750 10.6 11.1 95 11.9 11.0 108 Gunsight Pass 9820 11.6 11.9 97 13.0 12.4 105 Indian Creek 9425 20.6 20.6 100 17.9 17.4 103 Kendall R.S. 7740 9.3 11.0 85 11.7 12.1 97 Larsen Creek 9000 7.9 10.4 76 11.9 11.4 104 Loomis Park 8240 11.8 13.8 86 13.3 15.2 88 New Fork Lake 8340 8.0 9.6 83 5.8 9.5 61 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 9.1 11.9 76 11.3 12.6 90 Spring Creek Divide 9000 -M 22.2 * -M 21.6 * Triple Peak 8500 21.5 21.6 100 22.4 23.2 97 ----- ----- Basin Index (%) 91 96 LOWER GREEN RIVER Blacks Fork Jct 8869 11.0 7.6 145 13.2 10.5 126 Buck Pasture 9632 14.0 -M * 14.5 -M * EF Blacks Fork GS 9360 8.2 10.1 81 9.4 9.6 98 Hams Fork 7840 -M 10.2 * 10.3 9.4 110 Henrys Fork 10182 -M -M * 12.1 -M * Hewinta 9500 12.0 8.8 136 14.2 11.2 127 Hickerson Park 9122 10.9 6.8 160 13.0 8.7 149 Hole-in-Rock 9168 8.6 6.2 139 10.1 8.4 120 Indian Creek 9425 20.6 20.6 100 17.9 17.4 103 Kelley R.S. 8180 15.0 13.0 115 15.7 14.4 109 Spirit Lk 10235 13.7 10.4 132 17.1 14.4 119 Steel Creek Park 10158 14.3 12.6 113 16.5 13.1 126 ----- ----- Basin Index (%) 119 117 UPPER BEAR RIVER Bear River RS 8777 11.2 8.4 133 13.2 10.1 131 Bug Lake 7987 21.8 16.6 131 21.3 15.5 137 Burts Miller Ranch 8000 8.9 4.7 189 11.8 6.5 182 Chalk Creek #1 9171 21.0 19.8 106 22.2 20.4 109 Giveout 6930 10.9 8.2 133 11.9 10.4 114 Hayden Fork 9130 16.9 13.2 128 20.5 17.4 118 Kelley R.S. 8180 15.0 13.0 115 15.7 14.4 109 Lily Lake 9133 12.9 11.2 115 14.5 13.6 107 Monte Cristo 8932 27.0 23.6 114 25.3 21.9 116 Salt River Summit 7640 14.5 12.2 119 13.7 13.7 100 Spring Creek Divide 9000 -M 22.2 * -M 21.6 * Trial Lake 9992 23.3 19.6 119 23.0 19.4 119 ----- ----- Basin Index (%) 122 118 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Median (or Average) 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 (or Average) represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median (or Average) value for those sites on this day. The TOTAL PRECIPITATION Percent of Median (or Average) represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Median (or Average) value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1991-2020. 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 or average for the day is less than 10% of the maximum median or average value for the year. * Basin - More than half of the stations for a basin with medians (or averages) report missing or invalid data The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians or averages 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.