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: MARCH 12 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 15.0 15.7 96 18.7 17.6 106 Blind Bull Sum 8650 21.4 20.8 103 15.0 15.8 95 Cottonwood Creek 7670 19.7 19.0 104 23.0 21.4 107 East Rim Divide 7930 8.5 9.7 88 9.8 10.0 98 Grand Targhee 9260 33.5 34.8 96 24.6 26.8 92 Granite Creek 6770 13.7 15.2 90 14.5 16.3 89 Grassy Lake 7265 25.5 27.8 92 31.3 30.5 103 Gros Ventre Summit 8750 10.4 10.6 98 11.8 10.2 116 Gunsight Pass 9820 11.4 11.1 103 12.9 11.9 108 Lewis Lake Divide 7850 28.4 26.0 109 32.0 28.0 114 Loomis Park 8240 11.8 13.5 87 13.2 14.6 90 Phillips Bench 8200 22.6 22.2 102 25.2 23.2 109 Salt River Summit 7640 14.2 11.6 122 13.4 13.4 100 Snake River Station 6920 15.3 15.4 99 21.1 19.1 110 Somsen Ranch 6800 16.3 11.5 142 19.6 14.4 136 Spring Creek Divide 9000 -M 21.0 * -M 20.6 * Thumb Divide 7980 16.0 13.6 118 16.3 14.9 109 Togwotee Pass 9580 17.5 20.8 84 17.2 21.9 79 Triple Peak 8500 21.2 21.0 101 22.1 22.2 100 Two Ocean Plateau 9240 24.0 24.4 98 20.6 23.0 90 Willow Creek 8080 29.6 26.2 113 -M 28.2 * Younts Peak 8350 13.1 13.1 100 13.9 12.4 112 ----- ----- Basin Index (%) 101 102 MADISON HEADWATERS IN WYOMING Black Bear 8170 29.4 32.6 90 33.2 32.1 103 Canyon 7870 9.7 -M * 12.4 -M * Madison Plateau 7750 17.7 19.4 91 20.6 21.6 95 West Yellowstone 6700 8.1 9.8 83 12.2 12.6 97 Whiskey Creek 6800 11.8 13.9 85 17.6 17.1 103 ----- ----- Basin Index (%) 89 100 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 13.4 19.2 70 13.0 17.6 74 Canyon 7870 9.7 -M * 12.4 -M * Evening Star 9200 18.8 22.6 83 24.0 24.7 97 Fisher Creek 9100 19.4 27.8 70 21.8 27.6 79 Monument Peak 8850 12.3 18.0 68 15.3 18.1 85 Northeast Entrance 7350 5.2 9.3 56 8.8 11.4 77 Parker Peak 9400 17.8 18.4 97 19.4 17.4 111 Sylvan Lake 8420 14.6 17.0 86 20.4 19.4 105 Thumb Divide 7980 16.0 13.6 118 16.3 14.9 109 Two Ocean Plateau 9240 24.0 24.4 98 20.6 23.0 90 White Mill 8700 14.4 20.9 69 15.3 20.2 76 Wolverine 7650 9.4 10.8 87 12.4 11.0 113 ----- ----- Basin Index (%) 82 91 WIND RIVER Burroughs Creek 8750 10.8 -M * 10.8 -M * Castle Creek 8400 6.1 6.9 88 7.2 7.5 96 Cold Springs 9630 7.5 6.3 119 10.2 7.4 138 Deer Park 9700 13.6 11.4 119 16.0 14.4 111 Hobbs Park 10100 13.3 11.3 118 13.8 10.1 137 Kirwin 9550 11.7 9.2 127 14.2 10.0 142 Little Warm 9370 9.0 8.7 103 11.8 10.2 116 South Pass 9040 11.7 12.4 94 13.5 12.6 107 St. Lawrence Alt 8620 4.8 -M * 8.2 -M * Togwotee Pass 9580 17.5 20.8 84 17.2 21.9 79 Townsend Creek 8700 7.2 7.6 95 10.7 8.6 124 ----- ----- Basin Index (%) 103 112 BIGHORN BASIN Bald Mtn. 9380 11.0 16.0 69 10.5 13.4 78 Bear Trap Meadow 8200 3.3 5.7 58 6.1 6.6 92 Bone Springs Div 9350 10.4 13.8 75 10.1 12.8 79 Grave Springs 8550 3.4 7.3 47 5.6 7.6 74 Kirwin 9550 11.7 9.2 127 14.2 10.0 142 Marquette 8760 9.6 5.8 166 12.7 7.2 176 Middle Powder 7760 4.5 8.8 51 6.3 8.4 75 Owl Creek 8975 5.0 4.6 109 6.4 5.0 128 Powder River Pass 9480 5.3 9.2 58 8.7 10.2 85 Shell Creek 9580 10.1 12.6 80 10.8 11.3 96 Timber Creek 7950 7.1 4.1 173 11.1 6.0 185 ----- ----- Basin Index (%) 84 104 SHOSHONE RIVER Blackwater 9780 19.6 19.4 101 20.6 18.4 112 Evening Star 9200 18.8 22.6 83 24.0 24.7 97 Marquette 8760 9.6 5.8 166 12.7 7.2 176 Sylvan Lake 8420 14.6 17.0 86 20.4 19.4 105 Sylvan Road 7120 8.0 10.4 77 14.6 14.6 100 Younts Peak 8350 13.1 13.1 100 13.9 12.4 112 ----- ----- Basin Index (%) 95 110 POWDER RIVER Bear Trap Meadow 8200 3.3 5.7 58 6.1 6.6 92 Cloud Peak Reservoir 9860 9.9 12.3 80 11.5 11.0 105 Grave Springs 8550 3.4 7.3 47 5.6 7.6 74 Hansen Sawmill 8360 3.9 5.8 67 6.8 6.6 103 Middle Powder 7760 4.5 8.8 51 6.3 8.4 75 Powder River Pass 9480 5.3 9.2 58 8.7 10.2 85 Soldier Park 8720 3.4 5.8 59 8.2 7.7 106 ----- ----- Basin Index (%) 61 92 TONGUE RIVER Big Goose 7990 4.4 6.7 66 8.3 8.2 101 Bone Springs Div 9350 10.4 13.8 75 10.1 12.8 79 Burgess Junction 7880 5.9 9.1 65 9.3 9.9 94 Dome Lake 8880 -M 9.6 * 8.4 10.0 84 Little Goose 8870 6.1 7.8 78 9.4 9.7 97 Sucker Creek 8880 7.7 10.2 75 11.1 11.6 96 Tie Creek 6870 1.7 4.8 35 10.1 8.8 115 ----- ----- Basin Index (%) 69 94 BELLE FOURCHE Blind Park 6890 2.8 6.8 41 5.3 9.2 58 Cole Canyon 5910 2.5 5.1 49 4.4 7.4 59 North Rapid Creek 6130 4.9 6.2 79 6.0 7.4 81 ----- ----- Basin Index (%) 56 65 CHEYENNE RIVER BASIN Blind Park 6890 2.8 6.8 41 5.3 9.2 58 North Rapid Creek 6130 4.9 6.2 79 6.0 7.4 81 ----- ----- Basin Index (%) 59 68 UPPER N. PLATTE Arapaho Ridge 10976 18.6 18.3 102 18.4 18.4 100 Blackhall Mtn 9839 29.2 24.0 122 30.1 23.6 128 Cinnabar Park 9707 14.8 18.2 81 17.4 20.6 84 Columbine 9167 24.0 20.7 116 22.8 20.7 110 Divide Peak 8730 17.5 16.9 104 20.6 18.2 113 Joe Wright 10158 16.0 18.0 89 19.9 22.0 90 Laprele Creek 8390 5.7 8.2 70 8.6 9.6 90 Med Bow 10512 31.3 -M * 28.2 -M * Never Summer 10323 15.4 17.1 90 11.9 14.4 83 North French Creek 10153 22.8 23.9 95 22.5 22.1 102 Old Battle 9860 27.3 25.8 106 28.1 28.4 99 Rawah 9069 10.0 9.6 104 12.9 13.1 98 Sage Creek Basin 7850 11.7 12.4 94 12.8 11.1 115 Sand Lake 10098 23.4 22.4 104 22.7 20.5 111 South Brush Creek 8495 9.1 10.3 88 9.9 11.4 87 Tower 10620 36.1 37.8 96 33.5 34.3 98 Webber Springs 9260 20.5 18.8 109 21.9 21.2 103 Whiskey Park 9020 27.8 23.4 119 26.2 23.6 111 Willow Creek Pass 9523 11.9 11.0 108 12.7 11.5 110 Zirkel 9338 23.5 24.9 94 25.0 26.5 94 ----- ----- Basin Index (%) 101 102 SWEETWATER Deer Park 9700 13.6 11.4 119 16.0 14.4 111 Larsen Creek 9000 7.4 10.1 73 11.1 11.1 100 South Pass 9040 11.7 12.4 94 13.5 12.6 107 ----- ----- Basin Index (%) 96 107 LOWER N. PLATTE Casper Mtn. 7920 6.2 10.8 57 11.0 11.0 100 Laprele Creek 8390 5.7 8.2 70 8.6 9.6 90 Reno Hill 8430 7.0 11.4 61 10.9 11.9 92 Windy Peak 7915 6.4 6.7 96 7.8 8.0 98 ----- ----- Basin Index (%) 68 95 LARAMIE RIVER Brooklyn Lake 10250 20.1 17.2 117 20.6 18.2 113 Cinnabar Park 9707 14.8 18.2 81 17.4 20.6 84 Crow Creek 8335 3.2 6.4 50 7.4 8.3 89 Deadman Hill 10239 14.7 14.3 103 13.9 14.4 97 Rawah 9069 10.0 9.6 104 12.9 13.1 98 Roach 9740 10.9 13.1 83 13.2 15.6 85 Windy Peak 7915 6.4 6.7 96 7.8 8.0 98 ----- ----- Basin Index (%) 94 95 S. PLATTE Crow Creek 8335 3.2 6.4 50 7.4 8.3 89 ----- ----- Basin Index (%) 50 89 LITTLE SNAKE RIVER Battle Mountain 7498 11.4 10.6 108 16.2 13.0 125 Divide Peak 8730 17.5 16.9 104 20.6 18.2 113 Elk River 8739 17.0 16.6 102 17.0 16.2 105 Elkhead Divide 8800 20.5 -M * 21.1 -M * Little Snake River 8928 26.0 23.2 112 29.1 27.6 105 Old Battle 9860 27.3 25.8 106 28.1 28.4 99 Sage Creek Basin 7850 11.7 12.4 94 12.8 11.1 115 Sandstone RS 8152 16.8 11.6 145 15.6 15.8 99 Whiskey Park 9020 27.8 23.4 119 26.2 23.6 111 ----- ----- Basin Index (%) 111 108 UPPER GREEN RIVER Big Sandy Opening 9080 10.1 11.0 92 10.9 10.6 103 Blind Bull Sum 8650 21.4 20.8 103 15.0 15.8 95 East Rim Divide 7930 8.5 9.7 88 9.8 10.0 98 Elkhart Park G.S. 9400 8.7 10.4 84 9.9 10.8 92 Gros Ventre Summit 8750 10.4 10.6 98 11.8 10.2 116 Gunsight Pass 9820 11.4 11.1 103 12.9 11.9 108 Indian Creek 9425 20.3 20.2 100 17.6 17.1 103 Kendall R.S. 7740 9.0 10.8 83 11.7 11.6 101 Larsen Creek 9000 7.4 10.1 73 11.1 11.1 100 Loomis Park 8240 11.8 13.5 87 13.2 14.6 90 New Fork Lake 8340 8.0 9.3 86 -M 9.2 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 8.9 11.5 77 11.1 12.2 91 Spring Creek Divide 9000 -M 21.0 * -M 20.6 * Triple Peak 8500 21.2 21.0 101 22.1 22.2 100 ----- ----- Basin Index (%) 92 99 LOWER GREEN RIVER Blacks Fork Jct 8869 10.5 7.4 142 12.6 10.1 125 Buck Pasture 9632 13.5 -M * 14.0 -M * EF Blacks Fork GS 9360 7.7 10.0 77 9.0 9.4 96 Hams Fork 7840 -M 10.0 * 9.9 9.4 105 Henrys Fork 10182 -M -M * 11.4 -M * Hewinta 9500 11.0 8.7 126 13.4 11.0 122 Hickerson Park 9122 8.4 6.6 127 10.7 8.6 124 Hole-in-Rock 9168 7.2 6.2 116 8.6 8.3 104 Indian Creek 9425 20.3 20.2 100 17.6 17.1 103 Kelley R.S. 8180 14.8 12.8 116 15.5 14.2 109 Spirit Lk 10235 11.7 9.9 118 15.2 13.8 110 Steel Creek Park 10158 13.5 12.5 108 15.6 13.0 120 ----- ----- Basin Index (%) 111 111 UPPER BEAR RIVER Bear River RS 8777 10.9 8.0 136 12.7 9.7 131 Bug Lake 7987 21.3 16.4 130 20.7 15.2 136 Burts Miller Ranch 8000 8.5 5.7 149 11.4 6.2 184 Chalk Creek #1 9171 20.1 19.6 103 21.3 19.5 109 Giveout 6930 10.6 8.2 129 11.7 10.2 115 Hayden Fork 9130 16.3 13.0 125 19.9 17.4 114 Kelley R.S. 8180 14.8 12.8 116 15.5 14.2 109 Lily Lake 9133 12.2 11.0 111 13.9 13.4 104 Monte Cristo 8932 26.0 22.8 114 25.2 21.7 116 Salt River Summit 7640 14.2 11.6 122 13.4 13.4 100 Spring Creek Divide 9000 -M 21.0 * -M 20.6 * Trial Lake 9992 22.5 19.2 117 22.3 18.8 119 ----- ----- Basin Index (%) 120 118 ----------------------------------------------------------------------------- -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.